Add abstract properties node tree

properties node tree definations

Issue-ID: CCSDK-379

Change-Id: Ib498cd57b0de5e67a31764f2fe46a2aeed7ac3f4
Signed-off-by: Vidyashree Rama <vidyashree.rama@huawei.com>

16 files changed, 974 insertions, 47 deletions

diff --git a/restconf-client/provider/src/main/java/org/onap/ccsdk/sli/plugins/yangserializers/pnserializer/DataNodeChild.java b/restconf-client/provider/src/main/java/org/onap/ccsdk/sli/plugins/yangserializers/pnserializer/DataNodeChild.java
new file mode 100644
index 000000000..7be54690a
--- /dev/null
+++ b/restconf-client/provider/src/main/java/org/onap/ccsdk/sli/plugins/yangserializers/pnserializer/DataNodeChild.java
@@ -0,0 +1,27 @@
+/*-
+ * ============LICENSE_START=======================================================
+ * ONAP - CCSDK
+ * ================================================================================
+ * Copyright (C) 2018 Huawei Technologies Co., Ltd. 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.sli.plugins.yangserializers.pnserializer;
+
+/**
+ * Abstraction of entity representing child's to data node.
+ */
+public interface DataNodeChild extends NodeChild {
+}
diff --git a/restconf-client/provider/src/main/java/org/onap/ccsdk/sli/plugins/yangserializers/pnserializer/HolderNode.java b/restconf-client/provider/src/main/java/org/onap/ccsdk/sli/plugins/yangserializers/pnserializer/HolderNode.java
new file mode 100644
index 000000000..52bec3412
--- /dev/null
+++ b/restconf-client/provider/src/main/java/org/onap/ccsdk/sli/plugins/yangserializers/pnserializer/HolderNode.java
@@ -0,0 +1,59 @@
+/*-
+ * ============LICENSE_START=======================================================
+ * ONAP - CCSDK
+ * ================================================================================
+ * Copyright (C) 2018 Huawei Technologies Co., Ltd. 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.sli.plugins.yangserializers.pnserializer;
+
+import java.util.HashMap;
+import java.util.Map;
+
+/**
+ * Abstraction of an entity that represents holder node to multi instance node
+ * in properties data tree.
+ *
+ * @param <T> type of child
+ */
+public abstract class HolderNode<T extends NodeChild> extends PropertiesNode {
+
+    private Map<String, T> children = new HashMap<>();
+
+    protected HolderNode(String name, Namespace namespace, String uri,
+                         PropertiesNode parent, Object appInfo,
+                         NodeType nodeType) {
+        super(name, namespace, uri, parent, appInfo, nodeType);
+    }
+
+    /**
+     * Returns children.
+     *
+     * @return children
+     */
+    public Map<String, T> children() {
+        return children;
+    }
+
+    /**
+     * Returns child based on index.
+     *
+     * @return child based on index
+     */
+    public T child(String index) {
+        return children.get(index);
+    }
+}
diff --git a/restconf-client/provider/src/main/java/org/onap/ccsdk/sli/plugins/yangserializers/pnserializer/InnerNode.java b/restconf-client/provider/src/main/java/org/onap/ccsdk/sli/plugins/yangserializers/pnserializer/InnerNode.java
new file mode 100644
index 000000000..21f0b7c03
--- /dev/null
+++ b/restconf-client/provider/src/main/java/org/onap/ccsdk/sli/plugins/yangserializers/pnserializer/InnerNode.java
@@ -0,0 +1,94 @@
+/*-
+ * ============LICENSE_START=======================================================
+ * ONAP - CCSDK
+ * ================================================================================
+ * Copyright (C) 2018 Huawei Technologies Co., Ltd. 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.sli.plugins.yangserializers.pnserializer;
+
+import org.onap.ccsdk.sli.core.sli.SvcLogicException;
+
+import java.util.HashMap;
+import java.util.Map;
+
+/**
+ * Abstraction of an entity that represents an inner node to properties data
+ * tree.
+ *
+ * @param <T> type of child
+ */
+public abstract class InnerNode<T extends NodeChild> extends PropertiesNode {
+
+    private Map<String, T> children = new HashMap<String, T>();
+
+    protected InnerNode(String name, Namespace namespace, String uri,
+                        PropertiesNode parent, Object appInfo, NodeType nodeType) {
+        super(name, namespace, uri, parent, appInfo, nodeType);
+    }
+
+    /**
+     * Returns children.
+     *
+     * @return children
+     */
+    public Map<String, T> children() {
+        return children;
+    }
+
+    /**
+     * Sets children.
+     *
+     * @param children child nodes
+     */
+    public void children(Map<String, T> children) {
+        this.children = children;
+    }
+
+    @Override
+    public PropertiesNode addChild(String name, Namespace namespace,
+                                   NodeType type,
+                                   Object appInfo) throws SvcLogicException {
+        // TODO : to be implemented
+        return null;
+    }
+
+    @Override
+    public PropertiesNode addChild(String name, Namespace namespace,
+                                   NodeType type, String value,
+                                   Namespace valuens,
+                                   Object appInfo) throws SvcLogicException {
+        // TODO : to be implemented
+        return null;
+    }
+
+    @Override
+    public PropertiesNode addChild(String index, String name,
+                                   Namespace namespace, NodeType type,
+                                   Object appInfo) throws SvcLogicException {
+        // TODO : to be implemented
+        return null;
+    }
+
+    @Override
+    public PropertiesNode addChild(String index, String name,
+                                   Namespace namespace, NodeType type,
+                                   String value, Namespace valueNs,
+                                   Object appInfo) throws SvcLogicException {
+        // TODO : to be implemented
+        return null;
+    }
+}
diff --git a/restconf-client/provider/src/main/java/org/onap/ccsdk/sli/plugins/yangserializers/pnserializer/LeafListHolderChild.java b/restconf-client/provider/src/main/java/org/onap/ccsdk/sli/plugins/yangserializers/pnserializer/LeafListHolderChild.java
new file mode 100644
index 000000000..e43249a3d
--- /dev/null
+++ b/restconf-client/provider/src/main/java/org/onap/ccsdk/sli/plugins/yangserializers/pnserializer/LeafListHolderChild.java
@@ -0,0 +1,28 @@
+/*-
+ * ============LICENSE_START=======================================================
+ * ONAP - CCSDK
+ * ================================================================================
+ * Copyright (C) 2018 Huawei Technologies Co., Ltd. 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.sli.plugins.yangserializers.pnserializer;
+
+/**
+ * Abstraction of entity representing child's to leaf list holder.
+ */
+public interface LeafListHolderChild extends NodeChild {
+
+}
diff --git a/restconf-client/provider/src/main/java/org/onap/ccsdk/sli/plugins/yangserializers/pnserializer/LeafListHolderNode.java b/restconf-client/provider/src/main/java/org/onap/ccsdk/sli/plugins/yangserializers/pnserializer/LeafListHolderNode.java
new file mode 100644
index 000000000..aa10e3307
--- /dev/null
+++ b/restconf-client/provider/src/main/java/org/onap/ccsdk/sli/plugins/yangserializers/pnserializer/LeafListHolderNode.java
@@ -0,0 +1,81 @@
+/*-
+ * ============LICENSE_START=======================================================
+ * ONAP - CCSDK
+ * ================================================================================
+ * Copyright (C) 2018 Huawei Technologies Co., Ltd. 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.sli.plugins.yangserializers.pnserializer;
+
+import org.onap.ccsdk.sli.core.sli.SvcLogicException;
+
+/**
+ * Representation of leaf list holder node which will hold multi instance leaf
+ * node in properties data tree.
+ */
+public class LeafListHolderNode extends HolderNode<LeafListHolderChild> implements DataNodeChild {
+
+    /**
+     * Creates an instance of LeafListHolderNode.
+     *
+     * @param name name of the leaf-list node
+     * @param namespace namespace of the leaf-list node
+     * @param uri uri of the leaf-list node
+     * @param parent parent node of the leaf-list
+     * @param appInfo application info
+     * @param nodeType node type
+     */
+    public LeafListHolderNode(String name, Namespace namespace,
+                              String uri, PropertiesNode parent,
+                              Object appInfo, NodeType nodeType) {
+        super(name, namespace, uri, parent, appInfo, nodeType);
+    }
+
+    @Override
+    public PropertiesNode addChild(String name, Namespace namespace,
+                                   NodeType type, String value,
+                                   Namespace valueNs,
+                                   Object appInfo) throws SvcLogicException {
+        throw new SvcLogicException("Leaf cannot be child of leaf-list" +
+                                                   " holder node");
+    }
+
+    @Override
+    public PropertiesNode addChild(String name, Namespace namespace,
+                                   NodeType type,
+                                   Object appInfo) throws SvcLogicException {
+        throw new SvcLogicException("Container cannot be child of leaf-list" +
+                                                   " holder node");
+    }
+
+    @Override
+    public PropertiesNode addChild(String index, String name,
+                                   Namespace namespace,
+                                   NodeType type,
+                                   Object appInfo) throws SvcLogicException {
+        throw new SvcLogicException("List cannot be child of leaf-list" +
+                                                   " holder node");
+    }
+
+    @Override
+    public PropertiesNode addChild(String index, String name,
+                                   Namespace namespace, NodeType type,
+                                   String value, Namespace valueNs,
+                                   Object appInfo) throws SvcLogicException {
+        // TODO : to be implemented
+        return null;
+    }
+}
diff --git a/restconf-client/provider/src/main/java/org/onap/ccsdk/sli/plugins/yangserializers/pnserializer/LeafNode.java b/restconf-client/provider/src/main/java/org/onap/ccsdk/sli/plugins/yangserializers/pnserializer/LeafNode.java
new file mode 100644
index 000000000..c9cf95ba3
--- /dev/null
+++ b/restconf-client/provider/src/main/java/org/onap/ccsdk/sli/plugins/yangserializers/pnserializer/LeafNode.java
@@ -0,0 +1,119 @@
+/*-
+ * ============LICENSE_START=======================================================
+ * ONAP - CCSDK
+ * ================================================================================
+ * Copyright (C) 2018 Huawei Technologies Co., Ltd. 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.sli.plugins.yangserializers.pnserializer;
+
+import org.onap.ccsdk.sli.core.sli.SvcLogicException;
+
+/**
+ * Representation of leaf node in properties data tree.
+ */
+public class LeafNode extends PropertiesNode implements LeafListHolderChild, DataNodeChild {
+
+    private String value;
+    private Namespace valueNs;
+
+    /**
+     * Creates an instance of leaf node.
+     *
+     * @param name name of the leaf node
+     * @param namespace namespace of the leaf node
+     * @param uri uri of the leaf node
+     * @param parent parent of the leaf node
+     * @param appInfo application info
+     * @param nodeType node type
+     * @param value value of the leaf
+     */
+    public LeafNode(String name, Namespace namespace,
+                    String uri, PropertiesNode parent,
+                    Object appInfo, NodeType nodeType,
+                    String value) {
+        super(name, namespace, uri, parent, appInfo, nodeType);
+        this.value = value;
+    }
+
+    /**
+     * Returns value of the leaf.
+     *
+     * @return value of the leaf
+     */
+    public String value() {
+        return value;
+    }
+
+    /**
+     * Sets value of the leaf.
+     *
+     * @param value value of the leaf
+     */
+    public void value(String value) {
+        this.value = value;
+    }
+
+    /**
+     * Returns value namespace.
+     *
+     * @return value namespace
+     */
+    public Namespace valueNs() {
+        return valueNs;
+    }
+
+    /**
+     * Sets value namespace.
+     *
+     * @param valueNs value namespace
+     */
+    public void valueNs(Namespace valueNs) {
+        this.valueNs = valueNs;
+    }
+
+    @Override
+    public PropertiesNode addChild(String name, Namespace namespace,
+                                   NodeType type,
+                                   Object appInfo) throws SvcLogicException {
+        throw new SvcLogicException("Leaf cannot hold child nodes");
+    }
+
+    @Override
+    public PropertiesNode addChild(String name, Namespace namespace,
+                                   NodeType type, String value,
+                                   Namespace valueNs,
+                                   Object appInfo) throws SvcLogicException {
+        throw new SvcLogicException("Leaf cannot hold child nodes");
+    }
+
+    @Override
+    public PropertiesNode addChild(String index, String name,
+                                   Namespace namespace,
+                                   NodeType type,
+                                   Object appInfo) throws SvcLogicException {
+        throw new SvcLogicException("Leaf cannot hold child nodes");
+    }
+
+    @Override
+    public PropertiesNode addChild(String index, String name,
+                                   Namespace namespace,
+                                   NodeType type, String value,
+                                   Namespace valueNs,
+                                   Object appInfo) throws SvcLogicException {
+        throw new SvcLogicException("Leaf cannot hold child nodes");
+    }
+}
diff --git a/restconf-client/provider/src/main/java/org/onap/ccsdk/sli/plugins/yangserializers/pnserializer/ListHolderChild.java b/restconf-client/provider/src/main/java/org/onap/ccsdk/sli/plugins/yangserializers/pnserializer/ListHolderChild.java
new file mode 100644
index 000000000..ec9cc2a0f
--- /dev/null
+++ b/restconf-client/provider/src/main/java/org/onap/ccsdk/sli/plugins/yangserializers/pnserializer/ListHolderChild.java
@@ -0,0 +1,28 @@
+/*-
+ * ============LICENSE_START=======================================================
+ * ONAP - CCSDK
+ * ================================================================================
+ * Copyright (C) 2018 Huawei Technologies Co., Ltd. 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.sli.plugins.yangserializers.pnserializer;
+
+/**
+ * Abstraction of entity representing child's to list holder.
+ */
+public interface ListHolderChild extends NodeChild {
+
+}
diff --git a/restconf-client/provider/src/main/java/org/onap/ccsdk/sli/plugins/yangserializers/pnserializer/ListHolderNode.java b/restconf-client/provider/src/main/java/org/onap/ccsdk/sli/plugins/yangserializers/pnserializer/ListHolderNode.java
new file mode 100644
index 000000000..9d1168b8f
--- /dev/null
+++ b/restconf-client/provider/src/main/java/org/onap/ccsdk/sli/plugins/yangserializers/pnserializer/ListHolderNode.java
@@ -0,0 +1,66 @@
+/*-
+ * ============LICENSE_START=======================================================
+ * ONAP - CCSDK
+ * ================================================================================
+ * Copyright (C) 2018 Huawei Technologies Co., Ltd. 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.sli.plugins.yangserializers.pnserializer;
+
+import org.onap.ccsdk.sli.core.sli.SvcLogicException;
+
+/**
+ * Representation of list holder node which will hold multi instance node in
+ * properties data tree.
+ */
+public class ListHolderNode extends HolderNode<ListHolderChild> implements DataNodeChild {
+
+    protected ListHolderNode(String name, Namespace namespace, String uri,
+                          PropertiesNode parent, Object appInfo, NodeType nodeType) {
+        super(name, namespace, uri, parent, appInfo, nodeType);
+    }
+
+    @Override
+    public PropertiesNode addChild(String name, Namespace namespace,
+                                   NodeType type, String value,
+                                   Namespace valueNs,
+                                   Object appInfo) throws SvcLogicException {
+        throw new SvcLogicException("Leaf cannot be child of list holder node");
+    }
+
+    @Override
+    public PropertiesNode addChild(String name, Namespace namespace,
+                                   NodeType type,
+                                   Object appInfo) throws SvcLogicException {
+        throw new SvcLogicException("Container cannot be child of list holder node");
+    }
+
+    @Override
+    public PropertiesNode addChild(String index, String name,
+                                   Namespace namespace, NodeType type,
+                                   Object appInfo) throws SvcLogicException {
+        // TODO : to be implemented
+        return null;
+    }
+
+    @Override
+    public PropertiesNode addChild(String index, String name,
+                                   Namespace namespace, NodeType type,
+                                   String value, Namespace valueNs,
+                                   Object appInfo) throws SvcLogicException {
+        throw new SvcLogicException("Leaf-list cannot be child of list holder node");
+    }
+}
diff --git a/restconf-client/provider/src/main/java/org/onap/ccsdk/sli/plugins/yangserializers/pnserializer/MdsalPropertiesNodeSerializer.java b/restconf-client/provider/src/main/java/org/onap/ccsdk/sli/plugins/yangserializers/pnserializer/MdsalPropertiesNodeSerializer.java
index 67e9c1e59..05e1ac1e6 100644
--- a/restconf-client/provider/src/main/java/org/onap/ccsdk/sli/plugins/yangserializers/pnserializer/MdsalPropertiesNodeSerializer.java
+++ b/restconf-client/provider/src/main/java/org/onap/ccsdk/sli/plugins/yangserializers/pnserializer/MdsalPropertiesNodeSerializer.java
@@ -20,10 +20,12 @@
 
 package org.onap.ccsdk.sli.plugins.yangserializers.pnserializer;
 
-import java.util.Map;
 import org.opendaylight.yangtools.yang.model.api.SchemaContext;
 import org.opendaylight.yangtools.yang.model.api.SchemaNode;
 import org.slf4j.Logger;
+
+import java.util.Map;
+
 import static org.slf4j.LoggerFactory.getLogger;
 
 /**
diff --git a/restconf-client/provider/src/main/java/org/onap/ccsdk/sli/plugins/yangserializers/pnserializer/MultiInstanceNode.java b/restconf-client/provider/src/main/java/org/onap/ccsdk/sli/plugins/yangserializers/pnserializer/MultiInstanceNode.java
new file mode 100644
index 000000000..c251cdaea
--- /dev/null
+++ b/restconf-client/provider/src/main/java/org/onap/ccsdk/sli/plugins/yangserializers/pnserializer/MultiInstanceNode.java
@@ -0,0 +1,32 @@
+/*-
+ * ============LICENSE_START=======================================================
+ * ONAP - CCSDK
+ * ================================================================================
+ * Copyright (C) 2018 Huawei Technologies Co., Ltd. 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.sli.plugins.yangserializers.pnserializer;
+
+/**
+ * Representation of multi instance node in properties data tree.
+ */
+public class MultiInstanceNode extends InnerNode<DataNodeChild> implements ListHolderChild {
+
+    public MultiInstanceNode(String name, Namespace namespace, String uri,
+                             PropertiesNode parent, Object appinfo, NodeType nodeType) {
+        super(name, namespace, uri, parent, appinfo, nodeType);
+    }
+}
diff --git a/restconf-client/provider/src/main/java/org/onap/ccsdk/sli/plugins/yangserializers/pnserializer/Namespace.java b/restconf-client/provider/src/main/java/org/onap/ccsdk/sli/plugins/yangserializers/pnserializer/Namespace.java
new file mode 100644
index 000000000..4f27ee1e7
--- /dev/null
+++ b/restconf-client/provider/src/main/java/org/onap/ccsdk/sli/plugins/yangserializers/pnserializer/Namespace.java
@@ -0,0 +1,100 @@
+/*-
+ * ============LICENSE_START=======================================================
+ * ONAP - CCSDK
+ * ================================================================================
+ * Copyright (C) 2018 Huawei Technologies Co., Ltd. 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.sli.plugins.yangserializers.pnserializer;
+
+import java.net.URI;
+
+/**
+ * Representation of YANG namespace.
+ */
+public class Namespace {
+    private String moduleName;
+    private URI moduleNs;
+    private String revision;
+
+    /**
+     * Creates an instance of namespace with specified module name,
+     * namespace and revision.
+     *
+     * @param modulename module name
+     * @param moduleNs module namespace
+     * @param revision revision
+     */
+    public Namespace(String modulename, URI moduleNs, String revision) {
+        this.moduleName = modulename;
+        this.moduleNs = moduleNs;
+        this.revision = revision;
+    }
+
+    /**
+     * Returns module name.
+     *
+     * @return module name
+     */
+    public String moduleName() {
+        return moduleName;
+    }
+
+    /**
+     * Sets module name.
+     *
+     * @param moduleName module name
+     */
+    public void moduleName(String moduleName) {
+        this.moduleName = moduleName;
+    }
+
+    /**
+     * Sets module namespace.
+     *
+     * @return module namespace
+     */
+    public URI moduleNs() {
+        return moduleNs;
+    }
+
+    /**
+     * Sets module namespace.
+     *
+     * @param moduleNs module namespace
+     */
+    public void moduleNs(URI moduleNs) {
+        this.moduleNs = moduleNs;
+    }
+
+    /**
+     * Returns revision.
+     *
+     * @return revision
+     */
+    public String revision() {
+        return revision;
+    }
+
+    /**
+     * Sets revision.
+     *
+     * @param revision revision
+     */
+    public void revision(String revision) {
+        this.revision = revision;
+    }
+}
diff --git a/restconf-client/provider/src/main/java/org/onap/ccsdk/sli/plugins/yangserializers/pnserializer/NodeChild.java b/restconf-client/provider/src/main/java/org/onap/ccsdk/sli/plugins/yangserializers/pnserializer/NodeChild.java
new file mode 100644
index 000000000..d482c6763
--- /dev/null
+++ b/restconf-client/provider/src/main/java/org/onap/ccsdk/sli/plugins/yangserializers/pnserializer/NodeChild.java
@@ -0,0 +1,28 @@
+/*-
+ * ============LICENSE_START=======================================================
+ * ONAP - CCSDK
+ * ================================================================================
+ * Copyright (C) 2018 Huawei Technologies Co., Ltd. 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.sli.plugins.yangserializers.pnserializer;
+
+/**
+ * Abstraction of an entity that represents child's of a node.
+ */
+public interface NodeChild {
+
+}
diff --git a/restconf-client/provider/src/main/java/org/onap/ccsdk/sli/plugins/yangserializers/pnserializer/PropertiesNode.java b/restconf-client/provider/src/main/java/org/onap/ccsdk/sli/plugins/yangserializers/pnserializer/PropertiesNode.java
index fccfa6a9d..bb07382a4 100644
--- a/restconf-client/provider/src/main/java/org/onap/ccsdk/sli/plugins/yangserializers/pnserializer/PropertiesNode.java
+++ b/restconf-client/provider/src/main/java/org/onap/ccsdk/sli/plugins/yangserializers/pnserializer/PropertiesNode.java
@@ -20,24 +20,25 @@
 
 package org.onap.ccsdk.sli.plugins.yangserializers.pnserializer;
 
+import com.google.common.collect.ArrayListMultimap;
+import com.google.common.collect.Multimap;
+import org.onap.ccsdk.sli.core.sli.SvcLogicException;
+
 /**
  * Abstraction of properties node data tree. This intermediate representation
  * will enable data format serializers to be agnostic of DG context memory
- * nuances and thereby will enable faster development of new data faormat
+ * nuances and thereby will enable faster development of new data format
  * serializers.
  */
 public abstract class PropertiesNode {
 
     private String name;
-    private String namespace;
+    private Namespace namespace;
     private String uri;
     private PropertiesNode parent;
-
-    /**
-     * Creates an instance of properties node.
-     */
-    protected PropertiesNode() {
-    }
+    private Object appInfo;
+    private NodeType nodeType;
+    private Multimap<Object, PropertiesNode> augmentations = ArrayListMultimap.create();
 
     /**
      * Creates an instance of properties node.
@@ -47,78 +48,213 @@ public abstract class PropertiesNode {
      * @param uri URI of this node, if null its calculated based on parent and
      * current value of name and namespace
      * @param parent parent's node
+     * @param appInfo application related information
+     * @param nodeType node type
      */
-    protected PropertiesNode(String name, String namespace, String uri, PropertiesNode parent) {
+    protected PropertiesNode(String name, Namespace namespace, String uri,
+                             PropertiesNode parent, Object appInfo, NodeType nodeType) {
         this.name = name;
         this.namespace = namespace;
         this.uri = uri;
         this.parent = parent;
+        this.appInfo = appInfo;
+        this.nodeType = nodeType;
     }
 
     /**
-     * Adds a child to a current node.
+     * Sets name.
      *
-     * @param name name of child
-     * @param namespace namespace of child, null represents parent namespace
-     * @param type type of node
-     * @return added properties node
+     * @param name name of the node
      */
-    public abstract PropertiesNode addChild(String name, String namespace, NodeType type);
+    public void name(String name) {
+        this.name = name;
+    }
 
     /**
-     * Adds a child with value to a current node.
+     * Sets namespace.
      *
-     * @param name name of child
-     * @param namespace namespace of child, null represents parent namespace
-     * @param type type of node
-     * @param value value of node
-     * @return added properties node
+     * @param namespace namespace of the node
      */
-    public abstract PropertiesNode addChild(String name, String namespace, NodeType type, String value);
+    public void namespace(Namespace namespace) {
+        this.namespace = namespace;
+    }
 
     /**
-     * Adds a child at a given index to a current node. To be used in case of
-     * leaf holder child's which is multi instance node.
+     * Sets uri.
      *
-     * @param index index at which node is to be added
-     * @param name name of child
-     * @param namespace namespace of child, null represents parent namespace
-     * @param type type of node
-     * @return added properties node
+     * @param uri uri of the node
      */
-    public abstract PropertiesNode addChild(String index, String name, String namespace, NodeType type);
-
-    public void name(String name) {
-        this.name = name;
-    }
-
-    public void namespace(String namespace) {
-        this.namespace = namespace;
-    }
-
     public void uri(String uri) {
         this.uri = uri;
     }
 
+    /**
+     * Sets parent node.
+     *
+     * @param parent parent node
+     */
     public void parent(PropertiesNode parent) {
         this.parent = parent;
     }
 
+    /**
+     * Sets application info.
+     *
+     * @param appInfo application info
+     */
+    public void appInfo(Object appInfo) {
+        this.appInfo = appInfo;
+    }
+
+    /**
+     * Returns parent.
+     *
+     * @return parent node
+     */
     public PropertiesNode parent() {
         return parent;
     }
 
+    /**
+     * Returns name.
+     *
+     * @return name of the node
+     */
     public String name() {
         return name;
     }
 
-    public String namespace() {
+    /**
+     * Returns namespace.
+     *
+     * @return namespace of the node
+     */
+    public Namespace namespace() {
         return namespace;
     }
 
+    /**
+     * Returns uri.
+     *
+     * @return uri of the node
+     */
     public String uri() {
         return uri;
     }
 
+    /**
+     * Returns application info.
+     *
+     * @return application info
+     */
+    public Object appInfo() {
+        return appInfo;
+    }
+
+    /**
+     * Returns node type.
+     *
+     * @return node type
+     */
+    public NodeType nodeType() {
+        return nodeType;
+    }
+
+    /**
+     * Returns augmentations.
+     *
+     * @return augmentations
+     */
+    public Multimap<Object, PropertiesNode> augmentations() {
+        return augmentations;
+    }
+
+    /**
+     * Sets augmentations.
+     *
+     * @param augmentations augmentations of the node
+     */
+    public void augmentations(Multimap<Object, PropertiesNode> augmentations) {
+        this.augmentations = augmentations;
+    }
+
+    /**
+     * Adds a child to a current node.
+     *
+     * @param name name of child
+     * @param namespace namespace of child, null represents parent namespace
+     * @param type type of node
+     * @param appInfo application info
+     * @return added properties node
+     */
+    public abstract PropertiesNode addChild(String name, Namespace namespace,
+                                            NodeType type,
+                                            Object appInfo) throws SvcLogicException;
+
+    /**
+     * Adds a child with value to a current node.
+     *
+     * @param name name of child
+     * @param namespace namespace of child, null represents parent namespace
+     * @param type type of node
+     * @param value value of node
+     * @param valueNs value namespace
+     * @param appInfo application info
+     * @throws SvcLogicException if failed to add child
+     * @return added properties node
+     */
+    public abstract PropertiesNode addChild(String name, Namespace namespace,
+                                            NodeType type, String value,
+                                            Namespace valueNs,
+                                            Object appInfo) throws SvcLogicException;
+
+    /**
+     * Adds a child at a given index to a current node. To be used in case of
+     * leaf holder child's which is multi instance node.
+     *
+     * @param index index at which node is to be added
+     * @param name name of child
+     * @param namespace namespace of child, null represents parent namespace
+     * @param type type of node
+     * @param appInfo application info
+     * @throws SvcLogicException if failed to add child
+     * @return added properties node
+     */
+    public abstract PropertiesNode addChild(String index, String name,
+                                            Namespace namespace,
+                                            NodeType type,
+                                            Object appInfo) throws SvcLogicException;
+
+    /**
+     * Adds a child at a given index to a current node. To be used in case of
+     * leaf holder child's which is multi instance node.
+     *
+     * @param index index at which node is to be added
+     * @param name name of child
+     * @param namespace namespace of child, null represents parent namespace
+     * @param type type of node
+     * @param value value of node
+     * @param valueNs value namespace
+     * @param appInfo application info
+     * @throws SvcLogicException if failed to add child
+     * @return added properties node
+     */
+    public abstract PropertiesNode addChild(String index, String name,
+                                            Namespace namespace, NodeType type,
+                                            String value, Namespace valueNs,
+                                            Object appInfo) throws SvcLogicException;
+
+    /**
+     * Returns root node.
+     *
+     * @return root node
+     */
+    public PropertiesNode endNode() {
+        PropertiesNode node = this;
+        while (node.parent() != null){
+            node = node.parent();
+        }
+        return node;
+    }
 }
 
diff --git a/restconf-client/provider/src/main/java/org/onap/ccsdk/sli/plugins/yangserializers/pnserializer/PropertiesNodeSerializer.java b/restconf-client/provider/src/main/java/org/onap/ccsdk/sli/plugins/yangserializers/pnserializer/PropertiesNodeSerializer.java
index 81609a6da..3e3483721 100644
--- a/restconf-client/provider/src/main/java/org/onap/ccsdk/sli/plugins/yangserializers/pnserializer/PropertiesNodeSerializer.java
+++ b/restconf-client/provider/src/main/java/org/onap/ccsdk/sli/plugins/yangserializers/pnserializer/PropertiesNodeSerializer.java
@@ -20,6 +20,8 @@
 
 package org.onap.ccsdk.sli.plugins.yangserializers.pnserializer;
 
+import org.onap.ccsdk.sli.core.sli.SvcLogicException;
+
 import java.util.Map;
 
 /**
@@ -62,29 +64,30 @@ public abstract class PropertiesNodeSerializer<T, P> {
         this.uri = uri;
     }
 
-
     /**
      * Encodes from properties to properties-node tree.
      *
      * @param paramMap parameter map
+     * @throws SvcLogicException fails to encode properties to properties node
      * @return properties node
      */
-    public abstract PropertiesNode encode(Map<String, String> paramMap);
+    public abstract PropertiesNode encode(Map<String, String> paramMap) throws SvcLogicException;
 
     /**
      * Decodes from properties-node to properties map.
      *
      * @param propertiesNode properties-node
+     * @throws SvcLogicException fails to decode properties node to properties
      * @return parameter map
      */
-    public abstract Map<String, String> decode(PropertiesNode propertiesNode);
+    public abstract Map<String, String> decode(PropertiesNode propertiesNode) throws SvcLogicException;
 
     /**
      * Returns the schema node of the property
      *
      * @return schema node
      */
-    public T getSchemaNode(){
+    public T schemaNode(){
         return schemaNode;
     }
 
@@ -93,7 +96,7 @@ public abstract class PropertiesNodeSerializer<T, P> {
      *
      * @return schema node
      */
-    public P getSchemaCtx() {
+    public P schemaCtx() {
         return schemaCtx;
     }
 
@@ -102,7 +105,7 @@ public abstract class PropertiesNodeSerializer<T, P> {
      *
      * @return uri
      */
-    public String getUri() {
+    public String uri() {
         return uri;
     }
 }
diff --git a/restconf-client/provider/src/main/java/org/onap/ccsdk/sli/plugins/yangserializers/pnserializer/RootNode.java b/restconf-client/provider/src/main/java/org/onap/ccsdk/sli/plugins/yangserializers/pnserializer/RootNode.java
new file mode 100644
index 000000000..5cb8e4c97
--- /dev/null
+++ b/restconf-client/provider/src/main/java/org/onap/ccsdk/sli/plugins/yangserializers/pnserializer/RootNode.java
@@ -0,0 +1,91 @@
+/*-
+ * ============LICENSE_START=======================================================
+ * ONAP - CCSDK
+ * ================================================================================
+ * Copyright (C) 2018 Huawei Technologies Co., Ltd. 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.sli.plugins.yangserializers.pnserializer;
+
+import org.onap.ccsdk.sli.core.sli.SvcLogicException;
+
+import java.util.HashMap;
+import java.util.Map;
+
+/**
+ * Abstraction of node representing properties data tree.
+ */
+public class RootNode<T extends NodeChild> extends PropertiesNode {
+
+    private Map<String, T> children = new HashMap<String, T>();
+
+    protected RootNode(String name, Namespace namespace,
+                       Object appInfo, String uri) {
+        super(name, namespace, uri, null, appInfo, null);
+    }
+
+    /**
+     * Returns children.
+     *
+     * @return children
+     */
+    public Map<String, T> children() {
+        return children;
+    }
+
+    /**
+     * Sets children.
+     *
+     * @param children child nodes
+     */
+    public void children(Map<String, T> children) {
+        this.children = children;
+    }
+
+    @Override
+    public PropertiesNode addChild(String name, Namespace namespace,
+                                   NodeType type,
+                                   Object appInfo) throws SvcLogicException {
+        // TODO : to be implemented
+        return null;
+    }
+
+    @Override
+    public PropertiesNode addChild(String name, Namespace namespace,
+                                   NodeType type, String value,
+                                   Namespace valuens,
+                                   Object appInfo) throws SvcLogicException {
+        // TODO : to be implemented
+        return null;
+    }
+
+    @Override
+    public PropertiesNode addChild(String index, String name,
+                                   Namespace namespace, NodeType type,
+                                   Object appInfo) throws SvcLogicException {
+        // TODO : to be implemented
+        return null;
+    }
+
+    @Override
+    public PropertiesNode addChild(String index, String name,
+                                   Namespace namespace, NodeType type,
+                                   String value, Namespace valueNs,
+                                   Object appInfo) throws SvcLogicException {
+        // TODO : to be implemented
+        return null;
+    }
+}
diff --git a/restconf-client/provider/src/main/java/org/onap/ccsdk/sli/plugins/yangserializers/pnserializer/SingleInstanceNode.java b/restconf-client/provider/src/main/java/org/onap/ccsdk/sli/plugins/yangserializers/pnserializer/SingleInstanceNode.java
new file mode 100644
index 000000000..6eb24c1a4
--- /dev/null
+++ b/restconf-client/provider/src/main/java/org/onap/ccsdk/sli/plugins/yangserializers/pnserializer/SingleInstanceNode.java
@@ -0,0 +1,33 @@
+/*-
+ * ============LICENSE_START=======================================================
+ * ONAP - CCSDK
+ * ================================================================================
+ * Copyright (C) 2018 Huawei Technologies Co., Ltd. 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.sli.plugins.yangserializers.pnserializer;
+
+/**
+ * Representation of single instance node in properties data tree.
+ */
+public class SingleInstanceNode extends InnerNode<DataNodeChild> implements DataNodeChild {
+
+    public SingleInstanceNode(String name, Namespace namespace, String uri,
+                              PropertiesNode parent, Object appInfo,
+                              NodeType nodeType) {
+        super(name, namespace, uri, parent, appInfo, nodeType);
+    }
+}