Add data-provider

data-provider and change to avoid heap overflow

Issue-ID: SDNC-994
Signed-off-by: herbert <herbert.eiselt@highstreet-technologies.com>
Change-Id: Ifcc6ce1198442e4b48fc08ba71108cfd5b5ca8aa

9 files changed, 1990 insertions, 0 deletions

diff --git a/sdnr/wt/data-provider/database/src/main/java/org/onap/ccsdk/features/sdnr/wt/base/netconf/util/InternalConnectionStatus.java b/sdnr/wt/data-provider/database/src/main/java/org/onap/ccsdk/features/sdnr/wt/base/netconf/util/InternalConnectionStatus.java
new file mode 100644
index 000000000..81876b75b
--- /dev/null
+++ b/sdnr/wt/data-provider/database/src/main/java/org/onap/ccsdk/features/sdnr/wt/base/netconf/util/InternalConnectionStatus.java
@@ -0,0 +1,37 @@
+/*******************************************************************************
+ * ============LICENSE_START========================================================================
+ * ONAP : ccsdk feature sdnr wt
+ * =================================================================================================
+ * Copyright (C) 2019 highstreet technologies GmbH Intellectual Property. All rights reserved.
+ * =================================================================================================
+ * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except
+ * in compliance with the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software distributed under the License
+ * is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
+ * or implied. See the License for the specific language governing permissions and limitations under
+ * the License.
+ * ============LICENSE_END==========================================================================
+ ******************************************************************************/
+
+package org.onap.ccsdk.features.sdnr.wt.base.netconf.util;
+
+import org.opendaylight.yang.gen.v1.urn.opendaylight.netconf.node.topology.rev150114.NetconfNodeConnectionStatus.ConnectionStatus;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.data.provider.rev190801.ConnectionLogStatus;
+
+public class InternalConnectionStatus {
+	public static ConnectionLogStatus statusFromNodeStatus(ConnectionStatus nodeStatus) {
+		switch(nodeStatus) {
+		case Connected:
+			return ConnectionLogStatus.Connected;
+		case Connecting:
+			return ConnectionLogStatus.Connecting;
+		case UnableToConnect:
+			return ConnectionLogStatus.UnableToConnect;
+		default:
+			return ConnectionLogStatus.Undefined;
+		}
+	}
+}
diff --git a/sdnr/wt/data-provider/database/src/main/java/org/onap/ccsdk/features/sdnr/wt/base/netconf/util/NetconfTimeStamp.java b/sdnr/wt/data-provider/database/src/main/java/org/onap/ccsdk/features/sdnr/wt/base/netconf/util/NetconfTimeStamp.java
new file mode 100644
index 000000000..4857da661
--- /dev/null
+++ b/sdnr/wt/data-provider/database/src/main/java/org/onap/ccsdk/features/sdnr/wt/base/netconf/util/NetconfTimeStamp.java
@@ -0,0 +1,206 @@
+/*******************************************************************************
+ * ============LICENSE_START========================================================================
+ * ONAP : ccsdk feature sdnr wt
+ * =================================================================================================
+ * Copyright (C) 2019 highstreet technologies GmbH Intellectual Property. All rights reserved.
+ * =================================================================================================
+ * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except
+ * in compliance with the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software distributed under the License
+ * is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
+ * or implied. See the License for the specific language governing permissions and limitations under
+ * the License.
+ * ============LICENSE_END==========================================================================
+ ******************************************************************************/
+package org.onap.ccsdk.features.sdnr.wt.base.netconf.util;
+
+import java.time.LocalDateTime;
+import java.time.OffsetDateTime;
+import java.time.ZoneOffset;
+import java.time.ZonedDateTime;
+import java.time.format.DateTimeFormatter;
+import java.time.format.DateTimeParseException;
+import java.util.Date;
+
+import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.yang.types.rev130715.DateAndTime;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+/**
+ * 2019/06/17 Redesign to ZonedDateTime because of sync problems.
+ *
+ * Function is handling the NETCONF and the format used by database and restconf communication.
+ *
+ * Input supported for the formats used in NETCONF messages:
+ *
+ * Format1 ISO 8601 2017-01-18T11:44:49.482-05:00
+ *
+ * Format2 NETCONF - pattern from ietf-yang-types "2013-07-15" Pattern:
+ * "\d{4}-\d{2}-\d{2}T\d{2}:\d{2}:\d{2}(\.\d+)?(Z|[\+\-](\d{2}):(\d{2}))"
+ *
+ * Format3 NETCONF DateAndTime CoreModel-CoreFoundationModule-TypeDefinitions vom
+ * 2016-07-01 Example1: 20170118114449.1Z Example2: 20170118114449.1-0500 Pattern:
+ * "\d{4}\d{2}\d{2}\d{2}\d{2}\d{2}.\d+?(Z|[\+\-](\d{2})(\d{2}))" typedef DateAndTime { description
+ * "This primitive type defines the date and time according to the following structure:
+ * 'yyyyMMddhhmmss.s[Z|{+|-}HHMm]' where: yyyy '0000'..'9999' year MM '01'..'12' month dd '01'..'31'
+ * day hh '00'..'23' hour mm '00'..'59' minute ss '00'..'59' second s '.0'..'.9' tenth of second
+ * (set to '.0' if EMS or NE cannot support this granularity) Z 'Z' indicates UTC (rather than local
+ * time) {+|-} '+' or '-' delta from UTC HH '00'..'23' time zone difference in hours Mm '00'..'59'
+ * time zone difference in minutes."; type string; } Format4 E/// specific Example1:
+ * 2017-01-23T13:32:38-05:00 Example2: 2017-01-23T13:32-05:00
+ *
+ * Input formats netconfTime as String according the formats given above
+ *
+ * Return format is String in ISO8601 Format for database and presentation.
+ *
+ * Example formats:
+ *    1) ISO8601. Example 2017-01-18T11:44:49.482-05:00
+ *    2) Microwave ONF. Examples 20170118114449.1Z, 20170118114449.1-0500
+ *    3.1) Ericson. Example: 2017-01-23T13:32:38-05:00
+ *    3.2) Ericson. Example: 2017-01-23T13:32-05:00
+ *          Always 10 Groups,
+ *          1:Year 2:Month 3:day 4:Hour 5:minute 6:optional sec 7:optional ms 8:optional Z or 9:offset
+ *           signedhour 10:min
+ *
+ * Template:
+ *     private static final NetconfTimeStamp NETCONFTIME_CONVERTER = NetconfTimeStamp.getConverter();
+ */
+
+public class NetconfTimeStamp {
+    private static final Logger LOG = LoggerFactory.getLogger(NetconfTimeStamp.class);
+
+    private static final NetconfTimeStamp CONVERTER = new NetconfTimeStamp();
+
+    /**
+     * Specify the input format expected from netconf, and from specific devices.
+     */
+    private static DateTimeFormatter formatterInput = DateTimeFormatter.ofPattern(""
+            + "[yyyy-MM-dd'T'HH:mm[:ss][.SSS][.SS][.S][xxx][xx][X][Z]]"
+            + "[yyyyMMddHHmmss[.SSS][.SS][.S][xxx][xx][X][Z]]"
+            ).withZone(ZoneOffset.UTC);
+
+    /**
+     * Specify output format that is used internally
+     */
+    private static DateTimeFormatter formatterOutput = DateTimeFormatter.ofPattern("yyyy-MM-dd'T'HH:mm:ss.S'Z'")
+            .withZone(ZoneOffset.UTC);
+
+    /**
+     * Use static access
+     */
+    private NetconfTimeStamp() {
+    }
+
+    /*
+     * ------------------------------------ Public function
+     */
+
+    /**
+     * Use this function to get the converter
+     * @return global converter
+     */
+    public static NetconfTimeStamp getConverter() {
+        return CONVERTER;
+    }
+
+    /**
+     * Get actual timestamp as NETCONF specific type NETCONF/YANG 1.0 Format
+     *
+     * @return String with Date in NETCONF/YANG Format Version 1.0.
+     */
+    public String getTimeStampAsNetconfString() {
+        return ZonedDateTime.now(ZoneOffset.UTC).format(formatterOutput);
+    }
+
+    /**
+     * Get actual timestamp as NETCONF specific type NETCONF/YANG 1.0 Format
+
+     * @return String with Date in NETCONF/YANG Format Version 1.0.
+     */
+    public String getTimeStampAsNetconfString(Date date) {
+        return ZonedDateTime.ofInstant(date.toInstant(),ZoneOffset.UTC).format(formatterOutput);
+    }
+
+
+
+    /**
+     * Get actual timestamp as NETCONF specific type NETCONF/YANG 1.0 Format in GMT
+     *
+     * @return DateAndTime Type 1.0. Date in NETCONF/YANG Format Version 1.0.
+     */
+    public DateAndTime getTimeStamp() {
+        return DateAndTime.getDefaultInstance(getTimeStampAsNetconfString());
+    }
+
+    /**
+     * Get time from date as NETCONF specific type NETCONF/YANG 1.0 Format in GMT
+     * @param date specifying the date and time
+     * @return DateAndTime Type 1.0. Date in NETCONF/YANG Format Version 1.0.
+     */
+    public DateAndTime getTimeStamp(Date date) {
+        return DateAndTime.getDefaultInstance(getTimeStampAsNetconfString(date));
+    }
+    /**
+     * Get time from date as NETCONF specific type NETCONF/YANG 1.0 Format in GMT
+     * @param date specifying the date and time
+     * @return DateAndTime Type 1.0. Date in NETCONF/YANG Format Version 1.0.
+     */
+    public DateAndTime getTimeStamp(String date) {
+        return DateAndTime.getDefaultInstance(date);
+    }
+
+    /**
+     * Return the String with a NETCONF time converted to long
+     *
+     * @param netconfTime as String according the formats given above
+     * @return Epoch milliseconds
+     * @throws IllegalArgumentException In case of no compliant time format definition for the string
+     */
+    public long getTimeStampFromNetconfAsMilliseconds(String netconfTime) throws IllegalArgumentException {
+        try {
+            long utcMillis = doParse(netconfTime).toInstant().toEpochMilli();
+            return utcMillis;
+        } catch (DateTimeParseException e) {
+            throw new IllegalArgumentException(
+                    "No pattern for NETCONF data string: " + netconfTime + " Msg:" + e.getMessage());
+        }
+       }
+
+    /**
+     * Deliver String result.
+     *
+     * @param netconfTime as String according the formats given above
+     * @return If successful: String in ISO8601 Format for database and presentation. If "wrong formed
+     *         input" the Input string with the prefix "Maleformed date" is delivered back.
+     */
+    public String getTimeStampFromNetconf(String netconfTime) {
+        try {
+            String inputUTC = doParse(netconfTime).format(formatterOutput);
+            return inputUTC;
+        } catch (Exception e) {
+            LOG.info(e.getMessage());
+         }
+        LOG.debug("No pattern for NETCONF data string: {}", netconfTime);
+        return "Malformed date: " + netconfTime; // Error handling
+    }
+
+    /*----------------------------------------------------
+     * Private functions
+     */
+
+    private OffsetDateTime doParse(String netconfTime) {
+        return OffsetDateTime.parse(netconfTime, formatterInput);
+    }
+
+    public Date getDateFromNetconf(String netconfTime) {
+        return Date.from(LocalDateTime.parse(netconfTime, formatterInput).atZone(ZoneOffset.UTC).toInstant());
+    }
+
+    public String getTimeStampAsNetconfString(LocalDateTime dt) {
+        return formatterOutput.format(dt);
+    }
+
+}
diff --git a/sdnr/wt/data-provider/database/src/main/java/org/onap/ccsdk/features/sdnr/wt/database/EsDataObjectReaderWriter.java b/sdnr/wt/data-provider/database/src/main/java/org/onap/ccsdk/features/sdnr/wt/database/EsDataObjectReaderWriter.java
new file mode 100644
index 000000000..ac676024f
--- /dev/null
+++ b/sdnr/wt/data-provider/database/src/main/java/org/onap/ccsdk/features/sdnr/wt/database/EsDataObjectReaderWriter.java
@@ -0,0 +1,339 @@
+/*******************************************************************************
+ * ============LICENSE_START========================================================================
+ * ONAP : ccsdk feature sdnr wt
+ * =================================================================================================
+ * Copyright (C) 2019 highstreet technologies GmbH Intellectual Property. All rights reserved.
+ * =================================================================================================
+ * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except
+ * in compliance with the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software distributed under the License
+ * is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
+ * or implied. See the License for the specific language governing permissions and limitations under
+ * the License.
+ * ============LICENSE_END==========================================================================
+ ******************************************************************************/
+package org.onap.ccsdk.features.sdnr.wt.database;
+
+import java.io.IOException;
+import java.lang.reflect.Field;
+import java.util.List;
+
+import javax.annotation.Nonnull;
+import javax.annotation.Nullable;
+
+import org.onap.ccsdk.features.sdnr.wt.common.database.DatabaseClient;
+import org.onap.ccsdk.features.sdnr.wt.common.database.SearchHit;
+import org.onap.ccsdk.features.sdnr.wt.common.database.SearchResult;
+import org.onap.ccsdk.features.sdnr.wt.common.database.queries.QueryBuilder;
+import org.onap.ccsdk.features.sdnr.wt.yangtools.YangToolsMapper;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.data.provider.rev190801.Entity;
+import org.opendaylight.yangtools.concepts.Builder;
+import org.opendaylight.yangtools.yang.binding.DataObject;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import com.fasterxml.jackson.core.JsonProcessingException;
+
+/**
+ * Class to rw yang-tool generated objects into elasticsearch database. For "ES _id" exchange the esIdAddAtributteName is used.
+ * This attribute mast be of type String and contains for read and write operations the object id.
+ * The function can be used without id handling.
+ * If id handling is required the parameter needs to be specified by class definition in yang and  setting the name by using setAttributeName()
+ *
+ * @param <T> Yang tools generated class object.
+ */
+public class EsDataObjectReaderWriter<T extends DataObject> {
+
+ 	private final Logger LOG = LoggerFactory.getLogger(EsDataObjectReaderWriter.class);
+
+ 	/** Typename for elastic search data schema **/
+	private String dataTypeName;
+
+	/** Elasticsearch Database client to be used **/
+	private DatabaseClient db;
+
+	/** Mapper with configuration to use opendaylight yang-tools builder pattern for object creation **/
+	private YangToolsMapper yangtoolsMapper;
+
+	/** Class of T as attribute to allow JSON to Class object mapping **/
+	private Class<T> clazz;
+
+	/** Field is used to write id. If null no id handling **/
+	private @Nullable Field field;
+
+	/** Attribute that is used as id field for the database object **/
+	private @Nullable String esIdAddAtributteName;
+
+	/** Interface to be used for write operations. Rule for write: T extends S and  **/
+	private Class<? extends DataObject> writeInterfaceClazz; // == "S"
+
+	/**
+	 * Elasticsearch database read and write for specific class, defined by opendaylight yang-tools.
+	 *
+	 * @param db Database access client
+	 * @param dataTypeName typename in database schema
+	 * @param clazz class of type to be handled
+	 * @throws ClassNotFoundException
+	 */
+	public EsDataObjectReaderWriter(DatabaseClient db, Entity dataTypeName, Class<T> clazz) throws ClassNotFoundException {
+		this(db, dataTypeName.getName(), clazz);
+	}
+	public EsDataObjectReaderWriter(DatabaseClient db, String dataTypeName, Class<T> clazz) throws ClassNotFoundException {
+		LOG.info("Create {} for datatype {} class {}", this.getClass().getName(), dataTypeName, clazz.getName());
+
+		this.esIdAddAtributteName = null;
+		this.field = null;
+		this.writeInterfaceClazz = clazz;
+		this.db = db;
+		this.dataTypeName = dataTypeName;
+		this.yangtoolsMapper = new YangToolsMapper();
+		//this.yangtoolsMapper.assertBuilderClass(clazz);
+		this.clazz = clazz;
+//
+//		if (! db.isExistsIndex(dataTypeName)) {
+//			throw new IllegalArgumentException("Index "+dataTypeName+" not existing.");
+//		}
+	}
+
+	public String getDataTypeName() {
+		return dataTypeName;
+	}
+	public Class<T> getClazz() {
+		return clazz;
+	}
+	/**
+	 * Simlar to {@link #setEsIdAttributeName()}, but adapts the parameter to yangtools attribute naming schema
+	 * @param esIdAttributeName is converted to UnderscoreCamelCase
+	 * @return this for further operations.
+	 */
+	public EsDataObjectReaderWriter<T> setEsIdAttributeNameCamelized(String esIdAttributeName) {
+		return setEsIdAttributeName(YangToolsMapper.toCamelCaseAttributeName(esIdAttributeName));
+	}
+
+	/**
+	 * Attribute name of class that is containing the object id
+	 * @param esIdAttributeName of the implementation class for the yangtools interface.
+	 *        Expected attribute name format is CamelCase with leading underline. @
+	 * @return this for further operations.
+	 * @throws SecurityException if no access or IllegalArgumentException if wrong type or no attribute with this name.
+	 */
+	public EsDataObjectReaderWriter<T> setEsIdAttributeName(String esIdAttributeName) {
+		LOG.debug("Set attribute '{}'", esIdAttributeName);
+		this.esIdAddAtributteName = null; // Reset status
+		this.field = null;
+
+		Field attributeField;
+		try {
+			Builder<T> builder = yangtoolsMapper.getBuilder(clazz);
+			T object = builder.build();
+			attributeField = object.getClass().getDeclaredField(esIdAttributeName);
+			if (attributeField.getType().equals(String.class)) {
+				attributeField.setAccessible(true);
+				this.esIdAddAtributteName = esIdAttributeName; //Set new status if everything OK
+				this.field = attributeField;
+			} else {
+				String msg = "Wrong field type " + attributeField.getType().getName() + " of " + esIdAttributeName;
+				LOG.debug(msg);
+				throw new IllegalArgumentException(msg);
+			}
+		} catch (NoSuchFieldException e) {
+			// Convert to run-time exception
+			String msg = "NoSuchFieldException for '" + esIdAttributeName + "' in class " + clazz.getName();
+			LOG.debug(msg);
+			throw new IllegalArgumentException(msg);
+		} catch (SecurityException e) {
+			LOG.debug("Access problem "+esIdAttributeName,e);
+			throw e;
+		}
+		return this;
+	}
+
+	/**
+	 * Specify subclass of T for write operations.
+	 * @param writeInterfaceClazz
+	 */
+	public EsDataObjectReaderWriter<T> setWriteInterface( @Nonnull Class<? extends DataObject> writeInterfaceClazz ) {
+		LOG.debug("Set write interface to {}", writeInterfaceClazz);
+		if (writeInterfaceClazz == null)
+			throw new IllegalArgumentException("Null not allowed here.");
+
+		this.writeInterfaceClazz = writeInterfaceClazz;
+		return this;
+	}
+
+	/**
+	 * Write child object to database with specific id
+	 * @param object
+	 * @param @Nullable esId use the id or if null generate unique id
+	 * @return String with id or null
+	 */
+	public @Nullable <S extends DataObject> String write(S object, @Nullable String esId) {
+		if (writeInterfaceClazz.isInstance(object)) {
+			try {
+				String json = yangtoolsMapper.writeValueAsString(object);
+				return db.doWriteRaw(dataTypeName, esId, json);
+			} catch (JsonProcessingException e) {
+				LOG.error("Write problem: ", e);
+			}
+		} else {
+			LOG.error("Type {} does not provide interface {}", object!=null?object.getClass().getName():"null",
+					writeInterfaceClazz.getName());
+		}
+		return null;
+	}
+	/**
+	 * Update partial child object to database with match/term query
+	 * @param object
+	 * @param esId
+	 * @return String with esId or null
+	 */
+	public @Nullable <S extends DataObject> String update(S object, QueryBuilder query) {
+		if (writeInterfaceClazz.isInstance(object)) {
+			try {
+				String json = yangtoolsMapper.writeValueAsString(object);
+				return db.doUpdate(this.dataTypeName,json,query);
+			} catch (JsonProcessingException e) {
+				LOG.error("Update problem: ", e);
+			}
+		} else {
+			LOG.error("Type {} does not provide interface {}", object!=null?object.getClass().getName():"null",
+					writeInterfaceClazz.getName());
+		}
+		return null;
+	}
+	/**
+	 * Write/ update partial child object to database with specific id Write if not
+	 * exists, else update
+	 * @param object
+	 * @param esId
+	 * @return String with esId or null
+	 */
+	public @Nullable <S extends DataObject> String update(S object, String esId) {
+		return this.update(object, esId,null);
+	}
+	public @Nullable <S extends DataObject> String update(S object, String esId,List<String> onylForInsert) {
+		if (writeInterfaceClazz.isInstance(object)) {
+			try {
+				String json = yangtoolsMapper.writeValueAsString(object);
+				return db.doUpdateOrCreate(dataTypeName, esId, json,onylForInsert);
+			} catch (JsonProcessingException e) {
+				LOG.error("Update problem: ", e);
+			}
+		} else {
+			LOG.error("Type {} does not provide interface {}", object!=null?object.getClass().getName():"null",
+					writeInterfaceClazz.getName());
+		}
+		return null;
+	}
+
+    /**
+     * Read object from database, by using the id field
+     * @param object
+     * @return
+     */
+    public @Nullable T read(String esId) {
+    	@Nullable T res = (T)null;
+		if (esId != null) {
+			String json = db.doReadJsonData(dataTypeName, esId);
+			try {
+				res = yangtoolsMapper.readValue(json.getBytes(), clazz);
+			} catch (IOException e) {
+				LOG.error("Problem: ", e);
+			}
+		}
+        return res;
+    }
+
+    /**
+     * Remove object
+     * @param esId to identify the object.
+     * @return success
+     */
+    public boolean remove(String esId) {
+    	return db.doRemove(this.dataTypeName, esId);
+    }
+
+	public int remove(QueryBuilder query) {
+		return this.db.doRemove(this.dataTypeName, query);
+	}
+    /**
+     * Get all elements of related type
+     * @return all Elements
+     */
+    public SearchResult<T> doReadAll() {
+        return doReadAll(null);
+    }
+    public SearchResult<T> doReadAll(QueryBuilder query) {
+    	return this.doReadAll(query,false);
+	}
+    /**
+     * Read all existing objects of a type
+     * @param query for the elements
+     * @return the list of all objects
+     */
+
+    public SearchResult<T> doReadAll(QueryBuilder query, boolean ignoreException) {
+
+    	SearchResult<T> res = new SearchResult<T>();
+        int idx = 0;                //Idx for getAll
+        int iterateLength = 100;    //Step width for iterate
+
+        SearchResult<SearchHit> result;
+        List<SearchHit> hits;
+        do {
+            if(query!=null) {
+                LOG.debug("read data in {} with query {}",dataTypeName,query.toJSON());
+                result=db.doReadByQueryJsonData( dataTypeName, query,ignoreException);
+            }
+            else {
+            	result = db.doReadAllJsonData(dataTypeName,ignoreException);
+            }
+            hits=result.getHits();
+            LOG.debug("Read: {} elements: {}  Failures: {}",dataTypeName,hits.size(), yangtoolsMapper.getMappingFailures());
+
+            T object;
+            idx += result.getHits().size();
+			for (SearchHit hit : hits) {
+				object = getT(hit.getSourceAsString());
+				LOG.debug("Mapp Object: {}\nSource: '{}'\nResult: '{}'\n Failures: {}", hit.getId(),
+						hit.getSourceAsString(), object, yangtoolsMapper.getMappingFailures());
+				if (object != null) {
+					setEsId(object, hit.getId());
+					res.add(object);
+				} else {
+					LOG.warn("Mapp result null Object: {}\n Source: '{}'\n : '", hit.getId(), hit.getSourceAsString());
+				}
+			}
+
+		} while (hits.size() == iterateLength); // Do it until end indicated, because less hits than iterateLength
+												// allows.
+        res.setTotal(result.getTotal());
+        return res;
+    }
+
+	/* ---------------------------------------------
+     * Private functions
+     */
+
+	private void setEsId(T object, String esId) {
+		if (field != null) {
+			try {
+				field.set(object, esId);
+			} catch (IllegalArgumentException | IllegalAccessException e) {
+				LOG.debug("Field set problem.", e);			}
+		}
+	}
+
+    private @Nullable T getT(String jsonString) {
+    	try {
+			return yangtoolsMapper.readValue( jsonString, clazz );
+		} catch (IOException e) {
+			LOG.info("Mapping problem", e);
+			return (T)null;
+		}
+    }
+
+}
diff --git a/sdnr/wt/data-provider/database/src/main/java/org/onap/ccsdk/features/sdnr/wt/database/EsDataObjectReaderWriter2.java b/sdnr/wt/data-provider/database/src/main/java/org/onap/ccsdk/features/sdnr/wt/database/EsDataObjectReaderWriter2.java
new file mode 100644
index 000000000..b585b0c60
--- /dev/null
+++ b/sdnr/wt/data-provider/database/src/main/java/org/onap/ccsdk/features/sdnr/wt/database/EsDataObjectReaderWriter2.java
@@ -0,0 +1,360 @@
+/*******************************************************************************
+ * ============LICENSE_START========================================================================
+ * ONAP : ccsdk feature sdnr wt
+ * =================================================================================================
+ * Copyright (C) 2019 highstreet technologies GmbH Intellectual Property. All rights reserved.
+ * =================================================================================================
+ * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except
+ * in compliance with the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software distributed under the License
+ * is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
+ * or implied. See the License for the specific language governing permissions and limitations under
+ * the License.
+ * ============LICENSE_END==========================================================================
+ ******************************************************************************/
+package org.onap.ccsdk.features.sdnr.wt.database;
+
+import java.io.IOException;
+import java.lang.reflect.Field;
+import java.util.List;
+
+import javax.annotation.Nonnull;
+import javax.annotation.Nullable;
+
+import org.eclipse.jdt.annotation.NonNull;
+import org.onap.ccsdk.features.sdnr.wt.common.database.DatabaseClient;
+import org.onap.ccsdk.features.sdnr.wt.common.database.SearchHit;
+import org.onap.ccsdk.features.sdnr.wt.common.database.SearchResult;
+import org.onap.ccsdk.features.sdnr.wt.common.database.queries.QueryBuilder;
+import org.onap.ccsdk.features.sdnr.wt.yangtools.YangToolsMapper;
+import org.onap.ccsdk.features.sdnr.wt.yangtools.YangToolsMapper2;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.data.provider.rev190801.Entity;
+import org.opendaylight.yangtools.concepts.Builder;
+import org.opendaylight.yangtools.yang.binding.DataObject;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import com.fasterxml.jackson.core.JsonProcessingException;
+
+/**
+ * Class to rw yang-tool generated objects into elasticsearch database. For "ES _id" exchange the esIdAddAtributteName is used.
+ * This attribute mast be of type String and contains for read and write operations the object id.
+ * The function can be used without id handling.
+ * If id handling is required the parameter needs to be specified by class definition in yang and  setting the name by using setAttributeName()
+ *
+ * Due to using Jackson base interfaces the org.eclipse.jdt.annotation.NonNull needs to be used here to get rid of warnings
+ *
+ * @param <T> Yang tools generated class object.
+ */
+public class EsDataObjectReaderWriter2<T extends DataObject> {
+
+     private final Logger LOG = LoggerFactory.getLogger(EsDataObjectReaderWriter2.class);
+
+     /** Typename for elastic search data schema **/
+    private String dataTypeName;
+
+    /** Elasticsearch Database client to be used **/
+    private DatabaseClient db;
+
+    /** Mapper with configuration to use opendaylight yang-tools builder pattern for object creation **/
+    private YangToolsMapper2<T> yangtoolsMapper;
+
+    /** Class of T as attribute to allow JSON to Class object mapping **/
+    private Class<T> clazz;
+
+    /** Field is used to write id. If null no id handling **/
+    private @Nullable Field field;
+
+    /** Attribute that is used as id field for the database object **/
+    private @Nullable String esIdAddAtributteName;
+
+    /** Interface to be used for write operations. Rule for write: T extends S and  **/
+    private Class<? extends DataObject> writeInterfaceClazz; // == "S"
+
+    /**
+     * Elasticsearch database read and write for specific class, defined by opendaylight yang-tools.
+     *
+     * @param db Database access client
+     * @param dataTypeName typename in database schema
+     * @param clazz class of type to be handled
+     * @throws ClassNotFoundException
+     */
+    public <X extends T, @NonNull B extends Builder<X>> EsDataObjectReaderWriter2(DatabaseClient db, Entity dataTypeName, @Nonnull Class<T> clazz, @Nullable  Class<B> builderClazz) throws ClassNotFoundException {
+        this(db, dataTypeName.getName(), clazz, builderClazz);
+    }
+    public <X extends T, @NonNull B extends Builder<X>> EsDataObjectReaderWriter2(DatabaseClient db, Entity dataTypeName, @Nonnull Class<T> clazz) throws ClassNotFoundException {
+        this(db, dataTypeName.getName(), clazz, null);
+    }
+    public <X extends T, @NonNull  B extends Builder<X>> EsDataObjectReaderWriter2(DatabaseClient db, String dataTypeName, @Nonnull Class<T> clazz, @Nullable Class<B>  builderClazz) throws ClassNotFoundException {
+        LOG.info("Create {} for datatype {} class {}", this.getClass().getName(), dataTypeName, clazz.getName());
+
+        this.esIdAddAtributteName = null;
+        this.field = null;
+        this.writeInterfaceClazz = clazz;
+        this.db = db;
+        this.dataTypeName = dataTypeName;
+        this.yangtoolsMapper = new YangToolsMapper2<>(clazz, builderClazz);
+        this.clazz = clazz;
+    }
+
+    /**
+     * Simlar to {@link #setEsIdAttributeName()}, but adapts the parameter to yangtools attribute naming schema
+     * @param esIdAttributeName is converted to UnderscoreCamelCase
+     * @return this for further operations.
+     */
+    public EsDataObjectReaderWriter2<T> setEsIdAttributeNameCamelized(String esIdAttributeName) {
+        return setEsIdAttributeName(YangToolsMapper.toCamelCaseAttributeName(esIdAttributeName));
+    }
+
+    /**
+     * Attribute name of class that is containing the object id
+     * @param esIdAttributeName of the implementation class for the yangtools interface.
+     *        Expected attribute name format is CamelCase with leading underline. @
+     * @return this for further operations.
+     * @throws SecurityException if no access or IllegalArgumentException if wrong type or no attribute with this name.
+     */
+    public EsDataObjectReaderWriter2<T> setEsIdAttributeName(String esIdAttributeName) {
+        LOG.debug("Set attribute '{}'", esIdAttributeName);
+        this.esIdAddAtributteName = null; // Reset status
+        this.field = null;
+
+        Field attributeField;
+        try {
+            Builder<T> builder = yangtoolsMapper.getBuilder(clazz);
+            if (builder == null) {
+                String msg = "No builder for " + clazz;
+                LOG.debug(msg);
+                throw new IllegalArgumentException(msg);
+            } else {
+                T object = builder.build();
+                attributeField = object.getClass().getDeclaredField(esIdAttributeName);
+                if (attributeField.getType().equals(String.class)) {
+                    attributeField.setAccessible(true);
+                    this.esIdAddAtributteName = esIdAttributeName; // Set new status if everything OK
+                    this.field = attributeField;
+                } else {
+                    String msg = "Wrong field type " + attributeField.getType().getName() + " of " + esIdAttributeName;
+                    LOG.debug(msg);
+                    throw new IllegalArgumentException(msg);
+                }
+            }
+        } catch (NoSuchFieldException e) {
+            // Convert to run-time exception
+            String msg = "NoSuchFieldException for '" + esIdAttributeName + "' in class " + clazz.getName();
+            LOG.debug(msg);
+            throw new IllegalArgumentException(msg);
+        } catch (SecurityException e) {
+            LOG.debug("Access problem "+esIdAttributeName,e);
+            throw e;
+        }
+        return this;
+    }
+
+    /**
+     * Specify subclass of T for write operations.
+     * @param writeInterfaceClazz
+     */
+    public EsDataObjectReaderWriter2<T> setWriteInterface( @Nonnull Class<? extends DataObject> writeInterfaceClazz ) {
+        LOG.debug("Set write interface to {}", writeInterfaceClazz);
+        if (writeInterfaceClazz == null) {
+            throw new IllegalArgumentException("Null not allowed here.");
+        }
+
+        this.writeInterfaceClazz = writeInterfaceClazz;
+        return this;
+    }
+
+    public interface IdGetter<S extends DataObject> {
+        String getId(S object);
+    }
+
+    public <S extends DataObject> void write(List<S> objectList, IdGetter<S> idGetter) {
+        for (S object : objectList) {
+            write(object, idGetter.getId(object));
+        }
+    }
+
+    /**
+     * Write child object to database with specific id
+     * @param object
+     * @param @Nullable esId use the id or if null generate unique id
+     * @return String with id or null
+     */
+    public @Nullable <S extends DataObject> String write(S object, @Nullable String esId) {
+        if (writeInterfaceClazz.isInstance(object)) {
+            try {
+                String json = yangtoolsMapper.writeValueAsString(object);
+                return db.doWriteRaw(dataTypeName, esId, json);
+            } catch (JsonProcessingException e) {
+                LOG.error("Write problem: ", e);
+            }
+        } else {
+            LOG.error("Type {} does not provide interface {}", object!=null?object.getClass().getName():"null",
+                    writeInterfaceClazz.getName());
+        }
+        return null;
+    }
+    /**
+     * Update partial child object to database with match/term query
+     * @param object
+     * @param esId
+     * @return String with esId or null
+     */
+    public @Nullable <S extends DataObject> String update(S object, QueryBuilder query) {
+        if (writeInterfaceClazz.isInstance(object)) {
+            try {
+                String json = yangtoolsMapper.writeValueAsString(object);
+                return db.doUpdate(this.dataTypeName,json,query);
+            } catch (JsonProcessingException e) {
+                LOG.error("Update problem: ", e);
+            }
+        } else {
+            LOG.error("Type {} does not provide interface {}", object!=null?object.getClass().getName():"null",
+                    writeInterfaceClazz.getName());
+        }
+        return null;
+    }
+    /**
+     * Write/ update partial child object to database with specific id Write if not
+     * exists, else update
+     * @param object
+     * @param esId
+     * @return String with esId or null
+     */
+    public @Nullable <S extends DataObject> String update(S object, String esId) {
+        return this.updateOrCreate(object, esId,null);
+    }
+    /**
+     * See {@link doUpdateOrCreate(String dataTypeName, String esId, String json, List<String> doNotUpdateField) }
+     */
+    public @Nullable <S extends DataObject> String updateOrCreate(S object, String esId,List<String> onlyForInsert) {
+        if (writeInterfaceClazz.isInstance(object)) {
+            try {
+                String json = yangtoolsMapper.writeValueAsString(object);
+                return db.doUpdateOrCreate(dataTypeName, esId, json,onlyForInsert);
+            } catch (JsonProcessingException e) {
+                LOG.error("Update problem: ", e);
+            }
+        } else {
+            LOG.error("Type {} does not provide interface {}", object!=null?object.getClass().getName():"null",
+                    writeInterfaceClazz.getName());
+        }
+        return null;
+    }
+
+    /**
+     * Read object from database, by using the id field
+     * @param object
+     * @return
+     */
+    public @Nullable T read(String esId) {
+        @Nullable
+        T res = null;
+        if (esId != null) {
+            String json = db.doReadJsonData(dataTypeName, esId);
+            if (json != null) {
+                try {
+                    res = yangtoolsMapper.readValue(json.getBytes(), clazz);
+                } catch (IOException e) {
+                    LOG.error("Problem: ", e);
+                }
+            } else {
+                LOG.debug("Can not read from DB id {} type {}", esId, dataTypeName);
+            }
+        }
+        return res;
+    }
+
+    /**
+     * Remove object
+     * @param esId to identify the object.
+     * @return success
+     */
+    public boolean remove(String esId) {
+        return db.doRemove(this.dataTypeName, esId);
+    }
+
+    public int remove(QueryBuilder query) {
+        return this.db.doRemove(this.dataTypeName, query);
+    }
+    /**
+     * Get all elements of related type
+     * @return all Elements
+     */
+    public SearchResult<T> doReadAll() {
+        return doReadAll(null);
+    }
+    public SearchResult<T> doReadAll(QueryBuilder query) {
+        return this.doReadAll(query,false);
+    }
+    /**
+     * Read all existing objects of a type
+     * @param query for the elements
+     * @return the list of all objects
+     */
+
+    public SearchResult<T> doReadAll(QueryBuilder query, boolean ignoreException) {
+
+        SearchResult<T> res = new SearchResult<>();
+        int idx = 0;                //Idx for getAll
+        int iterateLength = 100;    //Step width for iterate
+
+        SearchResult<SearchHit> result;
+        List<SearchHit> hits;
+        do {
+            if(query!=null) {
+                LOG.debug("read data in {} with query {}",dataTypeName,query.toJSON());
+                result=db.doReadByQueryJsonData( dataTypeName, query,ignoreException);
+            }
+            else {
+                result = db.doReadAllJsonData(dataTypeName,ignoreException);
+            }
+            hits=result.getHits();
+            LOG.debug("Read: {} elements: {}  Failures: {}",dataTypeName,hits.size(), yangtoolsMapper.getMappingFailures());
+
+            T object;
+            idx += result.getHits().size();
+            for (SearchHit hit : hits) {
+                object = getT(hit.getSourceAsString());
+                LOG.debug("Mapp Object: {}\nSource: '{}'\nResult: '{}'\n Failures: {}", hit.getId(),
+                        hit.getSourceAsString(), object, yangtoolsMapper.getMappingFailures());
+                if (object != null) {
+                    setEsId(object, hit.getId());
+                    res.add(object);
+                } else {
+                    LOG.warn("Mapp result null Object: {}\n Source: '{}'\n : '", hit.getId(), hit.getSourceAsString());
+                }
+            }
+
+        } while (hits.size() == iterateLength); // Do it until end indicated, because less hits than iterateLength
+                                                // allows.
+        res.setTotal(result.getTotal());
+        return res;
+    }
+
+    /* ---------------------------------------------
+     * Private functions
+     */
+
+    private void setEsId(T object, String esId) {
+        if (field != null) {
+            try {
+                field.set(object, esId);
+            } catch (IllegalArgumentException | IllegalAccessException e) {
+                LOG.debug("Field set problem.", e);            }
+        }
+    }
+
+    private @Nullable T getT(String jsonString) {
+        try {
+            return yangtoolsMapper.readValue( jsonString, clazz );
+        } catch (IOException e) {
+            LOG.info("Mapping problem", e);
+            return null;
+        }
+    }
+
+}
diff --git a/sdnr/wt/data-provider/database/src/main/java/org/onap/ccsdk/features/sdnr/wt/database/config/EsConfig.java b/sdnr/wt/data-provider/database/src/main/java/org/onap/ccsdk/features/sdnr/wt/database/config/EsConfig.java
new file mode 100644
index 000000000..c828f3302
--- /dev/null
+++ b/sdnr/wt/data-provider/database/src/main/java/org/onap/ccsdk/features/sdnr/wt/database/config/EsConfig.java
@@ -0,0 +1,164 @@
+/*******************************************************************************
+ * ============LICENSE_START========================================================================
+ * ONAP : ccsdk feature sdnr wt
+ * =================================================================================================
+ * Copyright (C) 2019 highstreet technologies GmbH Intellectual Property. All rights reserved.
+ * =================================================================================================
+ * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except
+ * in compliance with the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software distributed under the License
+ * is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
+ * or implied. See the License for the specific language governing permissions and limitations under
+ * the License.
+ * ============LICENSE_END==========================================================================
+ ******************************************************************************/
+package org.onap.ccsdk.features.sdnr.wt.database.config;
+
+import java.net.MalformedURLException;
+import java.net.URL;
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.List;
+
+import org.onap.ccsdk.features.sdnr.wt.common.configuration.Configuration;
+import org.onap.ccsdk.features.sdnr.wt.common.configuration.ConfigurationFileRepresentation;
+import org.onap.ccsdk.features.sdnr.wt.common.database.config.HostInfo;
+import org.onap.ccsdk.features.sdnr.wt.common.database.config.HostInfo.Protocol;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+public class EsConfig implements Configuration {
+
+	private static final Logger LOG = LoggerFactory.getLogger(EsConfig.class);
+
+	public static final String SECTION_MARKER_ES = "es";
+
+	private static final String PROPERTY_KEY_DBHOSTS = "esHosts";
+	private static final String PROPERTY_KEY_ARCHIVE_LIMIT = "esArchiveLifetimeSeconds";
+	private static final String PROPERTY_KEY_CLUSTER = "esCluster";
+	private static final String PROPERTY_KEY_ARCHIVE_INTERVAL = "esArchiveCheckIntervalSeconds";
+	private static final String PROPERTY_KEY_NODE = "esNode";
+
+	private static String defaultHostinfo = printHosts(new HostInfo[] { new HostInfo("sdnrdb", 9200, Protocol.HTTP) });
+	private static final String DEFAULT_VALUE_CLUSTER = "";
+	/** check db data in this interval [in seconds] 0 deactivated */
+	private static final String DEFAULT_ARCHIVE_INTERVAL_SEC = "0";
+	/** keep data for this time [in seconds] 30 days */
+	private static final String DEFAULT_ARCHIVE_LIMIT_SEC = String.valueOf(60L * 60L * 24L * 30L);
+	private static final String DEFAULT_KEY_NODE = "elasticsearchnode";
+
+	private final ConfigurationFileRepresentation configuration;
+
+	public EsConfig(ConfigurationFileRepresentation configuration) {
+
+		this.configuration = configuration;
+		this.configuration.addSection(SECTION_MARKER_ES);
+		defaults();
+	}
+
+	/*
+	 * Setter
+	 */
+
+	public void setNode(String nodeName) {
+		configuration.setProperty(SECTION_MARKER_ES, PROPERTY_KEY_NODE, nodeName);
+	}
+
+	/*
+	 * Getter
+	 */
+
+	public String getNode() {
+		return configuration.getProperty(SECTION_MARKER_ES, PROPERTY_KEY_NODE);
+	}
+
+	public HostInfo[] getHosts() {
+		String dbHosts = configuration.getProperty(SECTION_MARKER_ES, PROPERTY_KEY_DBHOSTS);
+		return parseHosts(dbHosts);
+	}
+	public void setHosts(HostInfo[] hosts) {
+		this.configuration.setProperty(SECTION_MARKER_ES, PROPERTY_KEY_DBHOSTS, printHosts(hosts));
+	}
+	public String getCluster() {
+		return configuration.getProperty(SECTION_MARKER_ES, PROPERTY_KEY_ARCHIVE_INTERVAL);
+	}
+
+	public void setCluster(String cluster) {
+		configuration.setProperty(SECTION_MARKER_ES, PROPERTY_KEY_CLUSTER, cluster);
+	}
+
+	public long getArchiveCheckIntervalSeconds() {
+		return configuration.getPropertyLong(SECTION_MARKER_ES, PROPERTY_KEY_ARCHIVE_INTERVAL).orElse(0L);
+	}
+
+	public void setArchiveCheckIntervalSeconds(long seconds) {
+		configuration.setProperty(SECTION_MARKER_ES, PROPERTY_KEY_ARCHIVE_INTERVAL, seconds);
+	}
+
+	public long getArchiveLifetimeSeconds() {
+		return configuration.getPropertyLong(SECTION_MARKER_ES, PROPERTY_KEY_ARCHIVE_LIMIT).orElse(0L);
+	}
+
+	public void setArchiveLimit(long seconds) {
+		configuration.setProperty(SECTION_MARKER_ES, PROPERTY_KEY_ARCHIVE_LIMIT, seconds);
+	}
+
+	@Override
+	public String getSectionName() {
+		return SECTION_MARKER_ES;
+	}
+
+	@Override
+	public void defaults() {
+		// Add default if not available
+		configuration.setPropertyIfNotAvailable(SECTION_MARKER_ES, PROPERTY_KEY_DBHOSTS, defaultHostinfo);
+		configuration.setPropertyIfNotAvailable(SECTION_MARKER_ES, PROPERTY_KEY_ARCHIVE_LIMIT,
+				DEFAULT_ARCHIVE_LIMIT_SEC);
+		configuration.setPropertyIfNotAvailable(SECTION_MARKER_ES, PROPERTY_KEY_CLUSTER, DEFAULT_VALUE_CLUSTER);
+		configuration.setPropertyIfNotAvailable(SECTION_MARKER_ES, PROPERTY_KEY_ARCHIVE_INTERVAL,
+				DEFAULT_ARCHIVE_INTERVAL_SEC);
+		configuration.setPropertyIfNotAvailable(SECTION_MARKER_ES, PROPERTY_KEY_NODE, DEFAULT_KEY_NODE);
+	}
+
+	/** @TODO Shift to own class **/
+	private static String printHosts(HostInfo[] h) {
+		StringBuilder sb = new StringBuilder();
+		for (int i = 0; i < h.length; i++) {
+			sb.append(h[i].toUrl());
+			if (i != h.length - 1) {
+				sb.append(",");
+			}
+		}
+		return sb.toString();
+	}
+
+	/** @TODO Shift to own class **/
+	private static HostInfo[] parseHosts(String string) {
+		List<HostInfo> infos = new ArrayList<HostInfo>();
+		String[] list = string.split(",");
+		if (list.length > 0) {
+			for (String item : list) {
+				try {
+					URL url = new URL(item);
+					infos.add(new HostInfo(url.getHost(), url.getPort(), Protocol.getValueOf(url.getProtocol())));
+				} catch (MalformedURLException e) {
+					LOG.warn("problem parsing url {} : {}", item, e.getMessage());
+				}
+			}
+		}
+		HostInfo[] a = new HostInfo[infos.size()];
+		return infos.toArray(a);
+	}
+
+	@Override
+	public String toString() {
+		return "EsConfig [getNode()=" + getNode() + ", getHosts()=" + Arrays.toString(getHosts()) + ", getCluster()="
+				+ getCluster() + ", getArchiveCheckIntervalSeconds()=" + getArchiveCheckIntervalSeconds()
+				+ ", getArchiveLifetimeSeconds()=" + getArchiveLifetimeSeconds() + ", getSectionName()="
+				+ getSectionName() + "]";
+	}
+
+}
diff --git a/sdnr/wt/data-provider/database/src/main/java/org/onap/ccsdk/features/sdnr/wt/yangtools/YangToolsCloner.java b/sdnr/wt/data-provider/database/src/main/java/org/onap/ccsdk/features/sdnr/wt/yangtools/YangToolsCloner.java
new file mode 100644
index 000000000..1ac19ff34
--- /dev/null
+++ b/sdnr/wt/data-provider/database/src/main/java/org/onap/ccsdk/features/sdnr/wt/yangtools/YangToolsCloner.java
@@ -0,0 +1,217 @@
+/*******************************************************************************
+ * ============LICENSE_START========================================================================
+ * ONAP : ccsdk feature sdnr wt
+ * =================================================================================================
+ * Copyright (C) 2019 highstreet technologies GmbH Intellectual Property. All rights reserved.
+ * =================================================================================================
+ * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except
+ * in compliance with the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software distributed under the License
+ * is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
+ * or implied. See the License for the specific language governing permissions and limitations under
+ * the License.
+ * ============LICENSE_END==========================================================================
+ ******************************************************************************/
+package org.onap.ccsdk.features.sdnr.wt.yangtools;
+
+import java.lang.reflect.Field;
+import java.lang.reflect.InvocationTargetException;
+import java.lang.reflect.Method;
+import java.util.ArrayList;
+import java.util.List;
+
+import javax.annotation.Nullable;
+
+import org.opendaylight.yangtools.concepts.Builder;
+import org.opendaylight.yangtools.yang.binding.DataObject;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+public class YangToolsCloner {
+
+	private static YangToolsMapper yangtoolsMapper = new YangToolsMapper();
+	private static final Logger LOG = LoggerFactory.getLogger(YangToolsCloner.class);
+	public static final int ACCESSOR_FIELD = 0;
+	public static final int ACCESSOR_METHOD = 1;
+
+
+	private final int accessor;
+
+	private YangToolsCloner(int ac) {
+		this.accessor = ac;
+	}
+	public static YangToolsCloner instance() {
+		return instance(ACCESSOR_METHOD);
+	}
+	public static YangToolsCloner instance(int ac) {
+		return new YangToolsCloner(ac);
+	}
+	/**
+	 *
+     * @param source source object
+	 * @param clazz Class of return object
+	 * @return list of cloned object
+	 * @return
+	 */
+	public <S extends DataObject, T extends DataObject> List<T> cloneList(List<S> source, Class<T> clazz) {
+		return cloneList(source, clazz, null);
+	}
+
+	/**
+	 *
+	 * @param source source object
+	 * @param clazz Class of return object
+	 * @attrList filter for attribute Names to clone
+	 * @return list of cloned object
+	 */
+	public <S extends DataObject, T extends DataObject> List<T> cloneList(List<S> source, Class<T> clazz,
+			@Nullable List<String> attrList) {
+		if (source == null) {
+			return null;
+		}
+		List<T> list = new ArrayList<T>();
+		for (S s : source) {
+			list.add(clone(s, clazz, attrList));
+		}
+		return list;
+	}
+
+	/**
+	 *
+	 * @param source source object
+	 * @param clazz Class of return object
+	 * @return cloned object
+	 */
+	public <S , T extends DataObject> T clone(S source, Class<T> clazz) {
+		return clone(source, clazz, null);
+	}
+	/**
+	 *
+	 * @param source source object
+	 * @param clazz Class of return object
+	 * @attrList if empty copy all else list of attribute Names to clone
+	 * @return cloned object
+	 */
+	public <S, T extends DataObject> T clone(S source, Class<T> clazz,
+			@Nullable List<String> attrList) {
+		if (source == null) {
+			return (T)null;
+		}
+		Field[] attributeFields;
+		Field sourceField;
+		Method m;
+		Builder<T> builder = yangtoolsMapper.getBuilder(clazz);
+		T object = builder.build();
+		attributeFields = object.getClass().getDeclaredFields();
+		for (Field attributeField : attributeFields) {
+			// check if attr is in inclusion list
+			if (attrList != null && !attrList.contains(attributeField.getName())) {
+				continue;
+			}
+			// ignore QNAME
+			if (attributeField.getName().equals("QNAME")) {
+				continue;
+			}
+
+			attributeField.setAccessible(true);
+			try {
+				if(accessor==ACCESSOR_FIELD) {
+					sourceField = source.getClass().getDeclaredField(attributeField.getName());
+					sourceField.setAccessible(true);
+					if (attributeField.getType().equals(String.class) && !sourceField.getType().equals(String.class)) {
+						attributeField.set(object, String.valueOf(sourceField.get(source)));
+					} else {
+						attributeField.set(object, sourceField.get(source));
+					}
+				}
+				else if(accessor==ACCESSOR_METHOD) {
+					String getter = getter(attributeField.getName());
+					System.out.println("getter="+getter);
+					m = source.getClass().getDeclaredMethod(getter);
+					m.setAccessible(true);
+					if (attributeField.getType().equals(String.class) && !m.getReturnType().equals(String.class)) {
+						attributeField.set(object, String.valueOf(m.invoke(source)));
+					} else {
+						attributeField.set(object, m.invoke(source));
+					}
+				}
+
+			} catch (NoSuchMethodException | NoSuchFieldException e) {
+				// Convert to run-time exception
+				String msg = "no such field " + attributeField.getName() + " in class " + source.getClass().getName();
+				LOG.debug(msg);
+				// throw new IllegalArgumentException(msg);
+			} catch (IllegalAccessException|SecurityException e) {
+				LOG.debug("Access problem " + attributeField.getName(), e);
+			} catch (IllegalArgumentException e) {
+				LOG.debug("argument problem " + attributeField.getName(), e);
+			} catch (InvocationTargetException e) {
+				LOG.debug("invocation problem " + attributeField.getName(), e);
+			}
+		}
+
+		return object;
+	}
+
+	private static String getter(String name) {
+		return String.format("%s%s%s","get",name.substring(1, 2).toUpperCase(),name.substring(2));
+	}
+	public <S extends DataObject, T extends DataObject,B extends Builder<T>> B cloneToBuilder(S source, B builder){
+		return cloneToBuilder(source, builder,null);
+	}
+	public <S extends DataObject, T extends DataObject,B extends Builder<T>> B  cloneToBuilder(S source, B builder,
+			@Nullable List<String> attrList) {
+		Field[] attributeFields;
+		Field sourceField;
+		Method m;
+		attributeFields = builder.getClass().getDeclaredFields();
+		for (Field attributeField : attributeFields) {
+			// check if attr is in inclusion list
+			if (attrList != null && !attrList.contains(attributeField.getName())) {
+				continue;
+			}
+			// ignore QNAME
+			if (attributeField.getName().equals("QNAME")) {
+				continue;
+			}
+
+			attributeField.setAccessible(true);
+			try {
+				if(accessor==ACCESSOR_FIELD) {
+					sourceField = source.getClass().getDeclaredField(attributeField.getName());
+					sourceField.setAccessible(true);
+					if (attributeField.getType().equals(String.class) && !sourceField.getType().equals(String.class)) {
+						attributeField.set(builder, String.valueOf(sourceField.get(source)));
+					} else {
+						attributeField.set(builder, sourceField.get(source));
+					}
+				}
+				else if(accessor==ACCESSOR_METHOD) {
+					m = source.getClass().getDeclaredMethod(getter(attributeField.getName()));
+					m.setAccessible(true);
+					if (attributeField.getType().equals(String.class) && !m.getReturnType().equals(String.class)) {
+						attributeField.set(builder, String.valueOf(m.invoke(source)));
+					} else {
+						attributeField.set(builder, m.invoke(source));
+					}
+				}
+
+			} catch (NoSuchMethodException | NoSuchFieldException e) {
+				// Convert to run-time exception
+				String msg = "no such field " + attributeField.getName() + " in class " + source.getClass().getName();
+				LOG.debug(msg);
+				// throw new IllegalArgumentException(msg);
+			} catch (IllegalAccessException|SecurityException e) {
+				LOG.debug("Access problem " + attributeField.getName(), e);
+			} catch (IllegalArgumentException e) {
+				LOG.debug("argument problem " + attributeField.getName(), e);
+			} catch (InvocationTargetException e) {
+				LOG.debug("invocation problem " + attributeField.getName(), e);
+			}
+		}
+		return builder;
+	}
+}
diff --git a/sdnr/wt/data-provider/database/src/main/java/org/onap/ccsdk/features/sdnr/wt/yangtools/YangToolsCloner2.java b/sdnr/wt/data-provider/database/src/main/java/org/onap/ccsdk/features/sdnr/wt/yangtools/YangToolsCloner2.java
new file mode 100644
index 000000000..37d7aa4ad
--- /dev/null
+++ b/sdnr/wt/data-provider/database/src/main/java/org/onap/ccsdk/features/sdnr/wt/yangtools/YangToolsCloner2.java
@@ -0,0 +1,178 @@
+/*******************************************************************************
+ * ============LICENSE_START========================================================================
+ * ONAP : ccsdk feature sdnr wt
+ * =================================================================================================
+ * Copyright (C) 2019 highstreet technologies GmbH Intellectual Property. All rights reserved.
+ * =================================================================================================
+ * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except
+ * in compliance with the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software distributed under the License
+ * is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
+ * or implied. See the License for the specific language governing permissions and limitations under
+ * the License.
+ * ============LICENSE_END==========================================================================
+ ******************************************************************************/
+package org.onap.ccsdk.features.sdnr.wt.yangtools;
+
+import java.lang.reflect.Field;
+import java.lang.reflect.InvocationTargetException;
+import java.lang.reflect.Method;
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.List;
+
+import javax.annotation.Nullable;
+
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+public class YangToolsCloner2 {
+
+	private static final Logger LOG = LoggerFactory.getLogger(YangToolsCloner2.class);
+
+    public enum Accessor {
+    	ACCESSOR_FIELD,
+    	ACCESSOR_METHOD;
+    }
+
+	private Accessor accessor;
+
+	public YangToolsCloner2() {
+		LOG.info("Provide new {}",this.getClass().getName());
+		this.accessor = Accessor.ACCESSOR_METHOD;
+	}
+
+	YangToolsCloner2 setAcessor(Accessor accessor) {
+		this.accessor = accessor;
+		return this;
+	}
+
+	Accessor getAccessor() {
+		return accessor;
+	}
+
+	public interface Builder<T> {
+		T build();
+	}
+
+	/**
+	 *
+	 * @param source source object
+	 * @param clazz Class of return object
+	 * @attrList filter for attribute Names to clone
+	 * @return list of cloned object
+	 * @throws Exception
+	 */
+	public <S, T> List<T> cloneList(List<S> source, Builder<T> builder, String ... attrList) throws Exception {
+		if (source == null) {
+			return null;
+		}
+		List<T> list = new ArrayList<T>();
+		for (S s : source) {
+			list.add(copyAttributes(s, builder.build(), attrList));
+		}
+		return list;
+	}
+
+	/**
+	 * Copy attributes from source to destination object.
+	 * Copy the references.
+	 * @param source source object
+	 * @param clazz Class of return object
+	 * @attrList attribute Names NOT to clone.
+	 * @return cloned object
+	 * @throws Exception
+	 */
+	@SuppressWarnings("null")
+	public @Nullable <S, T> T copyAttributes(S source, T destination, String ... attributeArray) throws Exception {
+
+		LOG.debug("copyAttributes source.class {} destination.class {} attributes {}", source, destination, attributeArray.length);
+
+		if (destination == null || source == null)
+			return null;
+
+		List<String> attributeList = Arrays.asList(attributeArray);
+		LOG.debug("copyAttributes 2 attributes {}", attributeList);
+
+		Field[] destinationAttributeFields = source.getClass().getDeclaredFields();
+		String destinationName;
+		Class<?> destinationType;
+		for (Field destinationAttributeField : destinationAttributeFields) {
+			destinationName = destinationAttributeField.getName();
+			destinationType = destinationAttributeField.getType();
+			LOG.debug("Field: {}", destinationName);
+			// check if attr is in exclusion list
+			if (attributeList.contains(destinationName)) {
+				continue;
+			}
+			// ignore QNAME
+			if (destinationName.equals("QNAME")) {
+				continue;
+			}
+
+			destinationAttributeField.setAccessible(true);
+			Object sourceData = null;
+			Class<?> sourceType = null;
+			Class<?> sourceListType = null;
+			try {
+				if (accessor == Accessor.ACCESSOR_FIELD) {
+					Field sourceField;
+					sourceField = source.getClass().getDeclaredField(destinationName);
+					sourceField.setAccessible(true);
+					sourceType = sourceField.getType();
+					sourceData = sourceField.get(source);
+					sourceListType = getListClass(sourceType, sourceData);
+
+				} else if (accessor == Accessor.ACCESSOR_METHOD) {
+					Method sourceMethod;
+					sourceMethod = source.getClass().getDeclaredMethod(getter(destinationName));
+					sourceMethod.setAccessible(true);
+					sourceType = sourceMethod.getReturnType();
+					sourceData = sourceMethod.invoke(source);
+					sourceListType = getListClass(sourceType, sourceData);
+				}
+				LOG.info("Handle {} {} {}", destinationName, destinationType, sourceType);
+				if (destinationType == sourceType) {
+					destinationAttributeField.set(destination, sourceData);
+				} else {
+					throw new Exception(
+							"Problem to copy attribute " + destinationName
+							+" Sourceclass:" +sourceType
+							+" Destinationclass:" + destinationType
+							+" Method:"+accessor.name());
+				}
+			} catch (NoSuchFieldException | SecurityException | IllegalArgumentException | IllegalAccessException
+					| NoSuchMethodException | InvocationTargetException e) {
+				throw e;
+			}
+		}
+		return destination;
+
+	}
+
+	private static String getter(String name) {
+		if (name == null || name.length() == 0) {
+			return null;
+		} else if (name.length() == 1) {
+			return String.format("%s%s", "get", name.substring(1, 2).toUpperCase());
+		} else { // >= 2
+			return String.format("%s%s%s", "get", name.substring(1, 2).toUpperCase(), name.substring(2));
+		}
+	}
+
+	private static Class<?> getListClass(Class<?> sourceType, Object sourceData) {
+		if (sourceData != null && sourceType.equals(List.class)) {
+			List<Object> sourceDataList = (List<Object>)sourceData;
+			if (sourceDataList.size() > 0) {
+				LOG.info("Is list with type"+sourceDataList.get(0).getClass().getName());
+			} else {
+				LOG.info("Is empty list");
+			}
+		}
+	    return(sourceType);
+	}
+
+}
diff --git a/sdnr/wt/data-provider/database/src/main/java/org/onap/ccsdk/features/sdnr/wt/yangtools/YangToolsMapper.java b/sdnr/wt/data-provider/database/src/main/java/org/onap/ccsdk/features/sdnr/wt/yangtools/YangToolsMapper.java
new file mode 100644
index 000000000..8306cb7d4
--- /dev/null
+++ b/sdnr/wt/data-provider/database/src/main/java/org/onap/ccsdk/features/sdnr/wt/yangtools/YangToolsMapper.java
@@ -0,0 +1,226 @@
+/*******************************************************************************
+ * ============LICENSE_START========================================================================
+ * ONAP : ccsdk feature sdnr wt
+ * =================================================================================================
+ * Copyright (C) 2019 highstreet technologies GmbH Intellectual Property. All rights reserved.
+ * =================================================================================================
+ * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except
+ * in compliance with the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software distributed under the License
+ * is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
+ * or implied. See the License for the specific language governing permissions and limitations under
+ * the License.
+ * ============LICENSE_END==========================================================================
+ ******************************************************************************/
+package org.onap.ccsdk.features.sdnr.wt.yangtools;
+
+import java.io.IOException;
+import javax.annotation.Nullable;
+
+import org.opendaylight.yang.gen.v1.urn.opendaylight.netconf.node.topology.rev150114.netconf.node.credentials.Credentials;
+import org.opendaylight.yangtools.concepts.Builder;
+import org.opendaylight.yangtools.yang.binding.DataObject;
+import org.osgi.framework.Bundle;
+import org.osgi.framework.BundleContext;
+import org.osgi.framework.FrameworkUtil;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import com.fasterxml.jackson.annotation.JsonInclude.Include;
+import com.fasterxml.jackson.core.JsonGenerator;
+import com.fasterxml.jackson.core.JsonProcessingException;
+import com.fasterxml.jackson.databind.DeserializationFeature;
+import com.fasterxml.jackson.databind.ObjectMapper;
+import com.fasterxml.jackson.databind.PropertyNamingStrategy;
+import com.fasterxml.jackson.databind.SerializerProvider;
+import com.fasterxml.jackson.databind.annotation.JsonPOJOBuilder;
+import com.fasterxml.jackson.databind.annotation.JsonPOJOBuilder.Value;
+import com.fasterxml.jackson.databind.introspect.AnnotatedClass;
+import com.fasterxml.jackson.databind.introspect.JacksonAnnotationIntrospector;
+import com.fasterxml.jackson.databind.module.SimpleModule;
+import com.fasterxml.jackson.databind.ser.std.StdSerializer;
+
+import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.yang.types.rev130715.DateAndTime;
+/**
+ * YangToolsMapper is a specific Jackson mapper configuration for opendaylight yangtools serialization or deserialization of DataObject to/from JSON
+ * TODO ChoiceIn and Credentials deserialization only for LoginPasswordBuilder
+ */
+public class YangToolsMapper extends ObjectMapper {
+
+ 	private final Logger LOG = LoggerFactory.getLogger(YangToolsMapper.class);
+	private static final long serialVersionUID = 1L;
+	private static BundleContext context;
+
+	public YangToolsMapper() {
+		super();
+		configure(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES, false);
+		setPropertyNamingStrategy(PropertyNamingStrategy.KEBAB_CASE);
+		setSerializationInclusion(Include.NON_NULL);
+		setAnnotationIntrospector(new YangToolsBuilderAnnotationIntrospector());
+		SimpleModule dateAndTimeSerializerModule = new SimpleModule();
+		dateAndTimeSerializerModule.addSerializer(DateAndTime.class,new CustomDateAndTimeSerializer());
+		registerModule(dateAndTimeSerializerModule );
+		Bundle bundle = FrameworkUtil.getBundle(YangToolsMapper.class);
+		context = bundle != null ? bundle.getBundleContext() : null;
+	}
+
+	@Override
+	public String writeValueAsString(Object value) throws JsonProcessingException {
+		// TODO Auto-generated method stub
+		return super.writeValueAsString(value);
+	}
+	/**
+	 * Get Builder object for yang tools interface.
+	 * @param <T> yang-tools base datatype
+	 * @param clazz class with interface.
+	 * @return builder for interface or null if not existing
+	 */
+	@SuppressWarnings("unchecked")
+	public @Nullable <T extends DataObject> Builder<T> getBuilder(Class<T> clazz) {
+		String builder = clazz.getName() + "Builder";
+		try {
+			Class<?> clazzBuilder = findClass(builder);
+			return (Builder<T>) clazzBuilder.newInstance();
+		} catch (InstantiationException | IllegalAccessException | ClassNotFoundException e) {
+			LOG.debug("Problem ", e);
+			return null;
+		}
+	}
+
+	/**
+	 * Callback for handling mapping failures.
+	 * @return
+	 */
+	public int getMappingFailures() {
+		return 0;
+	}
+
+	/**
+	 * Provide mapping of string to attribute names, generated by yang-tools.
+	 * "netconf-id" converted to "_netconfId"
+	 * @param name with attribute name, not null or empty
+	 * @return converted string or null if name was empty or null
+	 */
+	public @Nullable static String toCamelCaseAttributeName(final String name) {
+		if (name == null || name.isEmpty())
+			return null;
+
+		final StringBuilder ret = new StringBuilder(name.length());
+		if (!name.startsWith("_"))
+			ret.append('_');
+		int start = 0;
+		for (final String word : name.split("-")) {
+			if (!word.isEmpty()) {
+				if (start++ == 0) {
+					ret.append(Character.toLowerCase(word.charAt(0)));
+				} else {
+					ret.append(Character.toUpperCase(word.charAt(0)));
+				}
+				ret.append(word.substring(1));
+			}
+		}
+		return ret.toString();
+	}
+
+	/**
+	 * Adapted Builder callbacks
+	 */
+	private static class YangToolsBuilderAnnotationIntrospector extends JacksonAnnotationIntrospector {
+		private static final long serialVersionUID = 1L;
+
+		@Override
+        public Class<?> findPOJOBuilder(AnnotatedClass ac) {
+        		try {
+            		String builder = null;
+            		if (ac.getRawType().equals(Credentials.class)) {
+            			builder = "org.opendaylight.yang.gen.v1.urn.opendaylight.netconf.node.topology.rev150114.netconf.node.credentials.credentials.LoginPasswordBuilder";
+            			//System.out.println(DataContainer.class.isAssignableFrom(ac.getRawType()));
+            			//System.out.println(ChoiceIn.class.isAssignableFrom(ac.getRawType()));
+
+            		} 
+            		else if(ac.getRawType().equals(DateAndTime.class)) {
+            			builder = DateAndTimeBuilder.class.getName();
+            		}
+                	
+            		else {
+        	        	if (ac.getRawType().isInterface()) 	{
+        	        		builder = ac.getName()+"Builder";
+        	        	}
+            		}
+            		if (builder != null) {
+		            	//System.out.println("XX1: "+ac.getRawType());
+		            	//System.out.println("XX2: "+builder);
+            			//Class<?> innerBuilder = Class.forName(builder);
+            			Class<?> innerBuilder = findClass(builder);
+	            	    //System.out.println("Builder found: "+ innerBuilder);
+	            	    return innerBuilder;
+            		}
+            	} catch( ClassNotFoundException e ) {
+    	            // No problem .. try next
+            	}
+           return super.findPOJOBuilder(ac);
+        }
+
+		@Override
+		public Value findPOJOBuilderConfig(AnnotatedClass ac) {
+			if (ac.hasAnnotation(JsonPOJOBuilder.class)) {
+				return super.findPOJOBuilderConfig(ac);
+			}
+			return new JsonPOJOBuilder.Value("build", "set");
+		}
+	}
+
+	private static Class<?> findClass(String name) throws ClassNotFoundException {
+		// Try to find in other bundles
+		if (context != null) {
+			//OSGi environment
+			for (Bundle b : context.getBundles()) {
+				try {
+					return b.loadClass(name);
+				} catch (ClassNotFoundException e) {
+					// No problem, this bundle doesn't have the class
+				}
+			}
+			throw new ClassNotFoundException("Can not find Class in OSGi context.");
+		} else {
+			return Class.forName(name);
+		}
+	    // not found in any bundle
+	}
+	public static class DateAndTimeBuilder{
+		
+		private final String _value;
+	
+		public DateAndTimeBuilder(String v) {
+			this._value= v;
+		}
+		
+		public DateAndTime build() {
+			return new DateAndTime(_value);
+		}
+		
+	}
+	public static class CustomDateAndTimeSerializer extends StdSerializer<DateAndTime>{
+
+		/**
+		 * 
+		 */
+		private static final long serialVersionUID = 1L;
+
+		public CustomDateAndTimeSerializer() {
+			this(null);
+		}
+		protected CustomDateAndTimeSerializer(Class<DateAndTime> t) {
+			super(t);
+		}
+
+		@Override
+		public void serialize(DateAndTime value, JsonGenerator gen, SerializerProvider serializers) throws IOException {
+			gen.writeString(value.getValue());
+		}
+		
+	}
+}
diff --git a/sdnr/wt/data-provider/database/src/main/java/org/onap/ccsdk/features/sdnr/wt/yangtools/YangToolsMapper2.java b/sdnr/wt/data-provider/database/src/main/java/org/onap/ccsdk/features/sdnr/wt/yangtools/YangToolsMapper2.java
new file mode 100644
index 000000000..0ee76b074
--- /dev/null
+++ b/sdnr/wt/data-provider/database/src/main/java/org/onap/ccsdk/features/sdnr/wt/yangtools/YangToolsMapper2.java
@@ -0,0 +1,263 @@
+/*******************************************************************************
+ * ============LICENSE_START========================================================================
+ * ONAP : ccsdk feature sdnr wt
+ * =================================================================================================
+ * Copyright (C) 2019 highstreet technologies GmbH Intellectual Property. All rights reserved.
+ * =================================================================================================
+ * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except
+ * in compliance with the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software distributed under the License
+ * is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
+ * or implied. See the License for the specific language governing permissions and limitations under
+ * the License.
+ * ============LICENSE_END==========================================================================
+ ******************************************************************************/
+package org.onap.ccsdk.features.sdnr.wt.yangtools;
+
+import java.io.IOException;
+import javax.annotation.Nullable;
+
+import org.opendaylight.yang.gen.v1.urn.opendaylight.netconf.node.topology.rev150114.netconf.node.credentials.Credentials;
+import org.opendaylight.yangtools.concepts.Builder;
+import org.opendaylight.yangtools.yang.binding.DataObject;
+import org.osgi.framework.Bundle;
+import org.osgi.framework.BundleContext;
+import org.osgi.framework.FrameworkUtil;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import com.fasterxml.jackson.annotation.JsonInclude.Include;
+import com.fasterxml.jackson.core.JsonGenerator;
+import com.fasterxml.jackson.core.JsonProcessingException;
+import com.fasterxml.jackson.databind.DeserializationFeature;
+import com.fasterxml.jackson.databind.ObjectMapper;
+import com.fasterxml.jackson.databind.PropertyNamingStrategy;
+import com.fasterxml.jackson.databind.SerializerProvider;
+import com.fasterxml.jackson.databind.annotation.JsonPOJOBuilder;
+import com.fasterxml.jackson.databind.annotation.JsonPOJOBuilder.Value;
+import com.fasterxml.jackson.databind.introspect.AnnotatedClass;
+import com.fasterxml.jackson.databind.introspect.JacksonAnnotationIntrospector;
+import com.fasterxml.jackson.databind.module.SimpleModule;
+import com.fasterxml.jackson.databind.ser.std.StdSerializer;
+
+import org.eclipse.jdt.annotation.NonNull;
+import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.yang.types.rev130715.DateAndTime;
+/**
+ * YangToolsMapper is a specific Jackson mapper configuration for opendaylight yangtools serialization or deserialization of DataObject to/from JSON
+ * TODO ChoiceIn and Credentials deserialization only for LoginPasswordBuilder
+ */
+public class YangToolsMapper2<T extends DataObject> extends ObjectMapper {
+
+ 	private final Logger LOG = LoggerFactory.getLogger(YangToolsMapper2.class);
+	private static final long serialVersionUID = 1L;
+	private static String ENTITY = "Entity";
+	private static String BUILDER = "Builder";
+
+	private @Nullable Class<T> clazz;
+	private @Nullable Class<? extends Builder<? extends T>> builderClazz;
+
+	private BundleContext context;
+
+	public <X extends T, B extends Builder<X>> YangToolsMapper2(Class<T> clazz, Class<B> builderClazz) throws ClassNotFoundException {
+		super();
+		configure(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES, false);
+		setPropertyNamingStrategy(PropertyNamingStrategy.KEBAB_CASE);
+		setSerializationInclusion(Include.NON_NULL);
+		setAnnotationIntrospector(new YangToolsBuilderAnnotationIntrospector());
+		SimpleModule dateAndTimeSerializerModule = new SimpleModule();
+		dateAndTimeSerializerModule.addSerializer(DateAndTime.class, new CustomDateAndTimeSerializer());
+		registerModule(dateAndTimeSerializerModule );
+		Bundle bundle = FrameworkUtil.getBundle(YangToolsMapper2.class);
+
+		this.clazz = clazz;
+		this.builderClazz = builderClazz != null ? builderClazz : getBuilderClass(getBuilderClassName(clazz)) ;
+		context = bundle != null ? bundle.getBundleContext() : null;
+	}
+
+	public YangToolsMapper2() throws ClassNotFoundException {
+		this(null, null);
+	}
+
+
+	@Override
+	public String writeValueAsString(Object value) throws JsonProcessingException {
+		return super.writeValueAsString(value);
+	}
+	/**
+	 * Get Builder object for yang tools interface.
+	 * @param <T> yang-tools base datatype
+	 * @param clazz class with interface.
+	 * @return builder for interface or null if not existing
+	 */
+	@SuppressWarnings("unchecked")
+	public @Nullable <T extends DataObject> Builder<T> getBuilder(Class<T> clazz) {
+		try {
+			//Class<?> clazzBuilder = getBuilderClass(getBuilderClassName(clazz));
+			return (Builder<T>) builderClazz.newInstance();
+		} catch (InstantiationException | IllegalAccessException e) {
+			LOG.debug("Problem ", e);
+			return null;
+		}
+	}
+
+	/**
+	 * Callback for handling mapping failures.
+	 * @return
+	 */
+	public int getMappingFailures() {
+		return 0;
+	}
+
+	/**
+	 * Provide mapping of string to attribute names, generated by yang-tools.
+	 * "netconf-id" converted to "_netconfId"
+	 * @param name with attribute name, not null or empty
+	 * @return converted string or null if name was empty or null
+	 */
+	public @Nullable static String toCamelCaseAttributeName(final String name) {
+		if (name == null || name.isEmpty())
+			return null;
+
+		final StringBuilder ret = new StringBuilder(name.length());
+		if (!name.startsWith("_"))
+			ret.append('_');
+		int start = 0;
+		for (final String word : name.split("-")) {
+			if (!word.isEmpty()) {
+				if (start++ == 0) {
+					ret.append(Character.toLowerCase(word.charAt(0)));
+				} else {
+					ret.append(Character.toUpperCase(word.charAt(0)));
+				}
+				ret.append(word.substring(1));
+			}
+		}
+		return ret.toString();
+	}
+
+	/** Verify if builder is available
+	 * @throws ClassNotFoundException **/
+	public Class<?> assertBuilderClass(Class<?> clazz) throws ClassNotFoundException {
+		return getBuilderClass(getBuilderClassName(clazz));
+	}
+
+	// --- Private functions
+
+	/**
+	 * Create name of builder class
+	 * @param <T>
+	 * @param clazz
+	 * @return builders class name
+	 * @throws ClassNotFoundException
+	 */
+	private static String getBuilderClassName(Class<?> clazz) {
+		return clazz.getName() + BUILDER;
+//		String clazzName = clazz.getName();
+//		if (clazzName.endsWith(ENTITY)) {
+//			return clazzName.replace(ENTITY, BUILDER);
+//		} else {
+//			return clazzName + BUILDER;
+//		}
+	}
+
+	/**
+	 * Search builder in context
+	 * @param name
+	 * @return
+	 * @throws ClassNotFoundException
+	 */
+	@SuppressWarnings("unchecked")
+	private <X extends T, B extends Builder<X>> Class<B> getBuilderClass(String name) throws ClassNotFoundException {
+		// Try to find in other bundles
+		if (context != null) {
+			//OSGi environment
+			for (Bundle b : context.getBundles()) {
+				try {
+					return (Class<B>) b.loadClass(name);
+				} catch (ClassNotFoundException e) {
+					// No problem, this bundle doesn't have the class
+				}
+			}
+			throw new ClassNotFoundException("Can not find Class in OSGi context.");
+		} else {
+			return (Class<B>) Class.forName(name);
+		}
+	    // not found in any bundle
+	}
+
+	// --- Classes
+
+	/**
+	 * Adapted Builder callbacks
+	 */
+	private class YangToolsBuilderAnnotationIntrospector extends JacksonAnnotationIntrospector {
+		private static final long serialVersionUID = 1L;
+
+		@Override
+		public Class<?> findPOJOBuilder(AnnotatedClass ac) {
+
+			if (ac.getRawType().equals(Credentials.class)) {
+				return org.opendaylight.yang.gen.v1.urn.opendaylight.netconf.node.topology.rev150114.netconf.node.credentials.credentials.LoginPasswordBuilder.class;
+
+			} else if (ac.getRawType().equals(DateAndTime.class)) {
+				return DateAndTimeBuilder.class;
+
+			} else if (ac.getRawType().equals(clazz)) {
+				return builderClazz;
+			}
+
+			if (ac.getRawType().isInterface()) {
+				String builder = getBuilderClassName(ac.getRawType());
+				try {
+					Class<?> innerBuilder = getBuilderClass(builder);
+					return innerBuilder;
+				} catch (ClassNotFoundException e) {
+					// No problem .. try next
+				}
+			}
+			return super.findPOJOBuilder(ac);
+		}
+
+		@Override
+		public Value findPOJOBuilderConfig(AnnotatedClass ac) {
+			if (ac.hasAnnotation(JsonPOJOBuilder.class)) {
+				return super.findPOJOBuilderConfig(ac);
+			}
+			return new JsonPOJOBuilder.Value("build", "set");
+		}
+	}
+
+	public static class DateAndTimeBuilder{
+
+		private final String _value;
+
+		public DateAndTimeBuilder(String v) {
+			this._value= v;
+		}
+
+		public DateAndTime build() {
+			return new DateAndTime(_value);
+		}
+
+	}
+	public static class CustomDateAndTimeSerializer extends StdSerializer<@NonNull DateAndTime>{
+
+		private static final long serialVersionUID = 1L;
+
+		public CustomDateAndTimeSerializer() {
+			this(null);
+		}
+		protected CustomDateAndTimeSerializer(Class<DateAndTime> t) {
+			super(t);
+		}
+
+		@Override
+		public void serialize(DateAndTime value, JsonGenerator gen, SerializerProvider serializers) throws IOException {
+			gen.writeString(value.getValue());
+		}
+
+	}
+}