ONOS-5863, ONOS-5804 DynamicConfig store and service implementation(create and read supported)
Change-Id: I299a27afe46b87f98d4af79643732e2f1bdc2010
diff --git a/apps/config/src/main/java/org/onosproject/config/model/LeafNode.java b/apps/config/src/main/java/org/onosproject/config/model/LeafNode.java
new file mode 100644
index 0000000..44319c8
--- /dev/null
+++ b/apps/config/src/main/java/org/onosproject/config/model/LeafNode.java
@@ -0,0 +1,194 @@
+/*
+ * Copyright 2016-present Open Networking Laboratory
+ *
+ * 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.
+ */
+
+package org.onosproject.config.model;
+
+import static org.onosproject.config.model.ModelConstants.NON_KEY_LEAF;
+
+/**
+ * Abstraction of an entity which represents leaf data tree node.
+ */
+public final class LeafNode extends DataNode {
+
+ /**
+ * Leaf node value.
+ */
+ private Object value;
+
+ /**
+ * Returns value contained in leaf node.
+ *
+ * @return value contained in leaf node
+ */
+ public Object value() {
+ return value;
+ }
+
+ /**
+ * Returns value as string, for usage in serializers.
+ *
+ * @return string representation of value
+ */
+ public String asString() {
+ return String.valueOf(value);
+ }
+
+ /**
+ * Creates an instance of leaf node.
+ *
+ * @param builder leaf node builder
+ */
+ public LeafNode(Builder builder) {
+ super(builder);
+ value = builder.value;
+ }
+
+ /**
+ * Returns data node builder instance.
+ *
+ * @param name name of node
+ * @param nameSpace namespace of node
+ * @return data node builder instance
+ */
+ public static Builder builder(String name, String nameSpace) {
+ return new Builder(name, nameSpace);
+ }
+
+ /**
+ * Returns data node copy builder.
+ *
+ * @return data node copy builder
+ */
+ @Override
+ public Builder copyBuilder() {
+ return new Builder(this);
+ }
+
+ /**
+ * Builder with get and set functions to build leaf node,
+ * builder will be used both to create leaf node from scratch or from a
+ * given leaf node.
+ */
+ public static final class Builder extends DataNode.Builder<Builder> {
+
+ /**
+ * Leaf node value.
+ */
+ private Object value;
+
+ public Builder() {
+ }
+
+ /**
+ * Creates an instance of data node builder.
+ *
+ * @param name name of node
+ * @param namespace namespace of node
+ */
+ public Builder(String name, String namespace) {
+ keyBuilder = NodeKey.builder().schemaId(name, namespace);
+ }
+
+ /**
+ * Creates an instance of leaf node copy builder.
+ *
+ * @param node old leaf node
+ */
+ public Builder(LeafNode node) {
+ super(node);
+ value = node.value;
+ }
+
+ /**
+ * Sets value of leaf node builder.
+ *
+ * @param value value
+ * @return leaf node builder
+ */
+ public Builder value(Object value) {
+ this.value = value;
+ return this;
+ }
+
+ @Override
+ public InnerNode.Builder createChildBuilder(String name, String nameSpace) {
+ throw new IllegalStateException("leaf node can't have a child " +
+ "node");
+ }
+
+ @Override
+ public LeafNode.Builder createChildBuilder(String name, String nameSpace,
+ Object value) {
+ throw new IllegalStateException("leaf node can't have a child " +
+ "node");
+ }
+
+ @Override
+ public InnerNode.Builder deleteChild(NodeKey key) {
+ throw new IllegalStateException("leaf node can't have a child " +
+ "node");
+ }
+
+ @Override
+ public InnerNode.Builder getChildBuilder(NodeKey key) {
+ throw new IllegalStateException("leaf node can't have a child " +
+ "node");
+ }
+
+
+ @Override
+ public InnerNode.Builder addKeyLeaf(String name, String nameSpace, Object val) {
+ throw new IllegalStateException("leaf node can't have a key " +
+ "leaves node");
+ }
+
+ @Override
+ public Builder addLeafListValue(Object val) {
+ LeafListKey.LeafListKeyBuilder leafListKeyBuilder;
+ if (!(keyBuilder instanceof LeafListKey.LeafListKeyBuilder)) {
+ if (keyBuilder instanceof ListKey.ListKeyBuilder) {
+ throw new ModelException(NON_KEY_LEAF);
+ }
+
+ leafListKeyBuilder = new LeafListKey.LeafListKeyBuilder();
+ NodeKey key = keyBuilder.build();
+ leafListKeyBuilder.schemaId(key.schemaId());
+ } else {
+ leafListKeyBuilder = (LeafListKey.LeafListKeyBuilder) keyBuilder;
+ }
+
+ leafListKeyBuilder.value(val);
+ keyBuilder = leafListKeyBuilder;
+ return this;
+ }
+
+ /**
+ * Builds a leaf node object.
+ *
+ * @return leaf node
+ */
+ @Override
+ public LeafNode build() {
+ if (type == null) {
+ throw new IllegalStateException("node should have a type.");
+ }
+ if (key == null) {
+ key = keyBuilder.build();
+ }
+ return new LeafNode(this);
+ }
+ }
+}
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