| /* |
| * 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); |
| } |
| } |
| } |