1 files changed, 182 insertions, 0 deletions
diff --git a/catalog-dao/src/main/java/org/openecomp/sdc/be/dao/api/BasicDao.java b/catalog-dao/src/main/java/org/openecomp/sdc/be/dao/api/BasicDao.java
new file mode 100644
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+++ b/catalog-dao/src/main/java/org/openecomp/sdc/be/dao/api/BasicDao.java
@@ -0,0 +1,182 @@
+/*-
+ * ============LICENSE_START=======================================================
+ * SDC
+ * ================================================================================
+ * Copyright (C) 2017 AT&T 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.openecomp.sdc.be.dao.api;
+
+import java.util.ArrayList;
+import java.util.List;
+import java.util.Map;
+import java.util.Map.Entry;
+
+import org.openecomp.sdc.be.dao.graph.datatype.GraphElement;
+import org.openecomp.sdc.be.dao.graph.datatype.GraphElementTypeEnum;
+import org.openecomp.sdc.be.dao.graph.datatype.GraphNode;
+import org.openecomp.sdc.be.dao.impl.Neo4jResourceDAO;
+import org.openecomp.sdc.be.dao.neo4j.BatchBuilder;
+import org.openecomp.sdc.be.dao.neo4j.GraphNeighbourTable;
+import org.openecomp.sdc.be.dao.neo4j.GraphPropertiesDictionary;
+import org.openecomp.sdc.be.dao.neo4j.Neo4jClient;
+import org.openecomp.sdc.be.dao.neo4j.Neo4jGraphBatchBuilder;
+import org.openecomp.sdc.be.dao.neo4j.Neo4jOperationStatus;
+import org.openecomp.sdc.be.dao.neo4j.filters.MatchFilter;
+import org.openecomp.sdc.be.datatypes.enums.NodeTypeEnum;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import fj.data.Either;
+
+public abstract class BasicDao implements IBasicDAO {
+
+	Neo4jGraphBatchBuilder graphBatchBuilder = new Neo4jGraphBatchBuilder();
+
+	Neo4jClient neo4jClient;
+
+	private static Logger logger = LoggerFactory.getLogger(Neo4jResourceDAO.class.getName());
+
+	public <T extends GraphNode> Either<T, Neo4jOperationStatus> create(GraphNeighbourTable graphNeighbourTable,
+			Class<T> clazz, NodeTypeEnum nodeType) {
+
+		if (graphNeighbourTable != null) {
+
+			Either<BatchBuilder, Neo4jOperationStatus> bbResult = graphBatchBuilder
+					.buildBatchBuilderFromTable(graphNeighbourTable);
+
+			if (bbResult.isLeft()) {
+
+				BatchBuilder batchBuilder = bbResult.left().value();
+				// Neo4jOperationStatus neo4jOperationStatus =
+				// neo4jClient.execute(batchBuilder);
+				Either<List<List<GraphElement>>, Neo4jOperationStatus> executeResult = neo4jClient
+						.execute(batchBuilder);
+
+				if (executeResult.isRight()) {
+					return Either.right(executeResult.right().value());
+				}
+
+				T result = null;
+				List<List<GraphElement>> listOfResults = executeResult.left().value();
+				if (listOfResults != null) {
+					for (List<GraphElement> listOfElements : listOfResults) {
+						if (listOfElements != null && false == listOfElements.isEmpty()) {
+							for (GraphElement element : listOfElements) {
+								logger.debug("element {} was returned after running batch operation {}", element, batchBuilder);
+								if (element instanceof GraphNode) {
+									GraphNode neo4jNode = (GraphNode) element;
+									if (NodeTypeEnum.getByName(neo4jNode.getLabel()) == nodeType) {
+										result = clazz.cast(neo4jNode);
+									}
+								}
+							}
+						}
+					}
+				}
+
+				return Either.left(result);
+
+			} else {
+				return Either.right(bbResult.right().value());
+			}
+
+		} else {
+			logger.error("The table sent in order to create resource is empty.");
+			return Either.right(Neo4jOperationStatus.BAD_REQUEST);
+		}
+
+	}
+
+	@Override
+	public <T extends GraphNode> Either<T, Neo4jOperationStatus> getNodeData(String uniqueid, Class<T> clazz,
+			NodeTypeEnum nodeTypeEnum) {
+
+		MatchFilter filter = new MatchFilter();
+		filter.addToMatch(GraphPropertiesDictionary.UNIQUE_ID.getProperty(), uniqueid);
+
+		return getNodeData(filter, clazz, nodeTypeEnum);
+
+	}
+
+	@Override
+	public <T extends GraphNode> Either<T, Neo4jOperationStatus> getNodeData(String keyName, String uniqueid,
+			Class<T> clazz, NodeTypeEnum nodeTypeEnum) {
+
+		MatchFilter filter = new MatchFilter();
+		filter.addToMatch(keyName, uniqueid);
+
+		return getNodeData(filter, clazz, nodeTypeEnum);
+
+	}
+
+	private <T extends GraphNode> Either<T, Neo4jOperationStatus> getNodeData(MatchFilter filter, Class<T> clazz,
+			NodeTypeEnum nodeTypeEnum) {
+
+		Either<List<GraphElement>, Neo4jOperationStatus> status = neo4jClient.getByFilter(GraphElementTypeEnum.Node,
+				nodeTypeEnum.getName(), filter);
+
+		if (status.isRight()) {
+			return Either.right(status.right().value());
+		} else {
+			List<GraphElement> value = status.left().value();
+			if (value == null || value.isEmpty()) {
+				return Either.right(Neo4jOperationStatus.NOT_FOUND);
+			} else {
+				return Either.left(clazz.cast(value.get(0)));
+			}
+		}
+	}
+
+	@Override
+	public <T extends GraphNode> Either<List<T>, Neo4jOperationStatus> getNodesData(
+			Map<String, Object> propertiesToMatch, Class<T> clazz, NodeTypeEnum nodeTypeEnum) {
+
+		MatchFilter filter = new MatchFilter();
+		if (propertiesToMatch != null) {
+			for (Entry<String, Object> property : propertiesToMatch.entrySet()) {
+				filter.addToMatch(property.getKey(), property.getValue());
+			}
+		}
+
+		Either<List<GraphElement>, Neo4jOperationStatus> status = neo4jClient.getByFilter(GraphElementTypeEnum.Node,
+				nodeTypeEnum.getName(), filter);
+
+		if (status.isRight()) {
+			return Either.right(status.right().value());
+		} else {
+			List<GraphElement> value = status.left().value();
+			if (value == null || value.isEmpty()) {
+				return Either.right(Neo4jOperationStatus.NOT_FOUND);
+			} else {
+				List<T> list = new ArrayList<T>();
+				for (GraphElement element : value) {
+					list.add(clazz.cast(element));
+				}
+				return Either.left(list);
+			}
+		}
+	}
+
+	public Neo4jClient getNeo4jClient() {
+		return neo4jClient;
+	}
+
+	public void setNeo4jClient(Neo4jClient neo4jClient) {
+		this.neo4jClient = neo4jClient;
+	}
+
+}