Sithara Punnassery | 9306e6b | 2017-02-06 15:38:19 -0800 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright 2016-present Open Networking Laboratory |
| 3 | * |
| 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 5 | * you may not use this file except in compliance with the License. |
| 6 | * You may obtain a copy of the License at |
| 7 | * |
| 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 9 | * |
| 10 | * Unless required by applicable law or agreed to in writing, software |
| 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 13 | * See the License for the specific language governing permissions and |
| 14 | * limitations under the License. |
| 15 | */ |
| 16 | package org.onosproject.config.model; |
| 17 | import java.util.LinkedHashMap; |
| 18 | import java.util.Map; |
| 19 | |
| 20 | import static org.onosproject.config.model.ModelConstants.LEAF_IS_TERMINAL; |
| 21 | |
| 22 | /** |
| 23 | * Abstraction of an entity which represents an inner node in data store. |
| 24 | */ |
| 25 | public final class InnerNode extends DataNode { |
| 26 | |
| 27 | /** |
| 28 | * Map containing info of all child data nodes with respect to their node |
| 29 | * keys. |
| 30 | */ |
| 31 | private Map<NodeKey, DataNode> childNodes = new LinkedHashMap<>(); |
| 32 | |
| 33 | /** |
| 34 | * Returns the children nodes to the current node. |
| 35 | * Children nodes are identified based on the node key. |
| 36 | * |
| 37 | * @return read only linked map of children nodes |
| 38 | */ |
| 39 | public Map<NodeKey, DataNode> childNodes() { |
| 40 | return childNodes; |
| 41 | } |
| 42 | |
| 43 | /** |
| 44 | * Creates an instance of inner node. |
| 45 | * |
| 46 | * @param builder inner node builder |
| 47 | */ |
| 48 | public InnerNode(Builder builder) { |
| 49 | super(builder); |
| 50 | childNodes = builder.childNodes; |
| 51 | } |
| 52 | |
| 53 | /** |
| 54 | * Returns inner node builder instance. |
| 55 | * |
| 56 | * @param name name of node |
| 57 | * @param nameSpace namespace of node |
| 58 | * @return inner node builder instance |
| 59 | */ |
| 60 | public static Builder builder(String name, String nameSpace) { |
| 61 | return new Builder(name, nameSpace); |
| 62 | } |
| 63 | |
| 64 | /** |
| 65 | * Returns inner node copy builder. |
| 66 | * |
| 67 | * @return inner node copy builder |
| 68 | */ |
| 69 | @Override |
| 70 | public Builder copyBuilder() { |
| 71 | return new Builder(this); |
| 72 | } |
| 73 | |
| 74 | /** |
| 75 | * Builder with get and set functions to build inner node, |
| 76 | * builder will be used both to create inner node from scratch or from a |
| 77 | * given inner node. |
| 78 | */ |
| 79 | public static class Builder extends DataNode.Builder<Builder> { |
| 80 | |
| 81 | /** |
| 82 | * Map containing info of all child data nodes with respect to their |
| 83 | * node keys. |
| 84 | */ |
| 85 | private Map<NodeKey, DataNode> childNodes = new LinkedHashMap<>(); |
| 86 | |
| 87 | public Builder() { |
| 88 | } |
| 89 | /** |
| 90 | * Creates an instance of data node builder. |
| 91 | * |
| 92 | * @param name name of node |
| 93 | * @param namespace namespace of node |
| 94 | */ |
| 95 | public Builder(String name, String namespace) { |
| 96 | keyBuilder = NodeKey.builder().schemaId(name, namespace); |
| 97 | } |
| 98 | |
| 99 | /** |
| 100 | * Creates an instance of inner node builder. |
| 101 | * |
| 102 | * @param node old inner node |
| 103 | */ |
| 104 | public Builder(InnerNode node) { |
| 105 | super(node); |
| 106 | childNodes = node.childNodes; |
| 107 | } |
| 108 | |
| 109 | /** |
| 110 | * Adds node to the builder. |
| 111 | * |
| 112 | * @param node node to be added |
| 113 | * @return inner node builder |
| 114 | */ |
| 115 | public Builder addNode(DataNode node) { |
| 116 | childNodes.put(node.key(), node); |
| 117 | return this; |
| 118 | } |
| 119 | |
| 120 | /** |
| 121 | * Builds a inner node object. |
| 122 | * |
| 123 | * @return inner node |
| 124 | */ |
| 125 | @Override |
| 126 | public InnerNode build() { |
| 127 | if (type == null) { |
| 128 | throw new IllegalStateException("node should have a type."); |
| 129 | } |
| 130 | if (key == null) { |
| 131 | key = keyBuilder.build(); |
| 132 | } |
| 133 | return new InnerNode(this); |
| 134 | } |
| 135 | |
| 136 | @Override |
| 137 | public InnerNode.Builder createChildBuilder(String name, String nameSpace) { |
| 138 | return InnerNode.builder(name, nameSpace) |
| 139 | .parent(this); |
| 140 | } |
| 141 | |
| 142 | @Override |
| 143 | public LeafNode.Builder createChildBuilder(String name, String nameSpace, |
| 144 | Object value) { |
| 145 | return LeafNode.builder(name, nameSpace) |
| 146 | .parent(this) |
| 147 | .value(value); |
| 148 | } |
| 149 | |
| 150 | @Override |
| 151 | public InnerNode.Builder deleteChild(NodeKey key) { |
| 152 | childNodes.remove(key); |
| 153 | return this; |
| 154 | } |
| 155 | |
| 156 | @Override |
| 157 | public Builder getChildBuilder(NodeKey nodeKey) { |
| 158 | DataNode node = childNodes.get(nodeKey); |
| 159 | if (node == null) { |
| 160 | throw new IllegalArgumentException( |
| 161 | "Invalid key: no child nodes found for given key: " + |
| 162 | nodeKey); |
| 163 | } |
| 164 | return (Builder) node.copyBuilder().parent(this); |
| 165 | } |
| 166 | |
| 167 | @Override |
| 168 | public Builder addKeyLeaf(String name, String nameSpace, Object val) { |
| 169 | ListKey.ListKeyBuilder listKeyBuilder; |
| 170 | if (!(keyBuilder instanceof ListKey.ListKeyBuilder)) { |
| 171 | if (keyBuilder instanceof LeafListKey.LeafListKeyBuilder) { |
| 172 | throw new ModelException(LEAF_IS_TERMINAL); |
| 173 | } |
| 174 | |
| 175 | listKeyBuilder = new ListKey.ListKeyBuilder(keyBuilder); |
| 176 | } else { |
| 177 | listKeyBuilder = (ListKey.ListKeyBuilder) keyBuilder; |
| 178 | } |
| 179 | |
| 180 | listKeyBuilder.addKeyLeaf(name, nameSpace, val); |
| 181 | keyBuilder = listKeyBuilder; |
| 182 | return this; |
| 183 | } |
| 184 | |
| 185 | @Override |
| 186 | public LeafNode.Builder addLeafListValue(Object val) { |
| 187 | throw new IllegalStateException("node is not of leaf list type."); |
| 188 | } |
| 189 | } |
| 190 | } |