2 * Copyright (c) 2013 Cisco Systems, Inc. and others. All rights reserved.
4 * This program and the accompanying materials are made available under the
5 * terms of the Eclipse Public License v1.0 which accompanies this distribution,
6 * and is available at http://www.eclipse.org/legal/epl-v10.html
8 package org.opendaylight.yangtools.yang.data.operations;
10 import com.google.common.base.Optional;
11 import com.google.common.base.Preconditions;
12 import com.google.common.collect.Lists;
13 import com.google.common.collect.Sets;
14 import java.util.List;
16 import org.opendaylight.yangtools.yang.common.QName;
17 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier;
18 import org.opendaylight.yangtools.yang.data.api.schema.AugmentationNode;
19 import org.opendaylight.yangtools.yang.data.api.schema.ChoiceNode;
20 import org.opendaylight.yangtools.yang.data.api.schema.ContainerNode;
21 import org.opendaylight.yangtools.yang.data.api.schema.DataContainerChild;
22 import org.opendaylight.yangtools.yang.data.api.schema.DataContainerNode;
23 import org.opendaylight.yangtools.yang.data.api.schema.LeafNode;
24 import org.opendaylight.yangtools.yang.data.api.schema.LeafSetNode;
25 import org.opendaylight.yangtools.yang.data.api.schema.MapNode;
26 import org.opendaylight.yangtools.yang.data.impl.schema.builder.api.DataContainerNodeBuilder;
27 import org.opendaylight.yangtools.yang.model.api.AugmentationSchema;
28 import org.opendaylight.yangtools.yang.model.api.ContainerSchemaNode;
29 import org.opendaylight.yangtools.yang.model.api.LeafListSchemaNode;
30 import org.opendaylight.yangtools.yang.model.api.LeafSchemaNode;
31 import org.opendaylight.yangtools.yang.model.api.ListSchemaNode;
33 abstract class AbstractContainerNodeModification<S, N extends DataContainerNode<?>> implements Modification<S, N> {
36 public final Optional<N> modify(S schema, Optional<N> actual, Optional<N> modification,
37 OperationStack operationStack) throws DataModificationException {
39 operationStack.enteringNode(modification);
42 QName nodeQName = getQName(schema);
44 switch (operationStack.getCurrentOperation()) {
46 DataModificationException.DataMissingException.check(nodeQName, actual);
49 result = Optional.absent();
53 DataModificationException.DataExistsException.check(nodeQName, actual, null);
56 result = modification;
60 DataModificationException.DataMissingException.check(nodeQName, actual);
63 // Recursively modify all child nodes
64 result = modifyContainer(schema, actual, modification, operationStack);
68 throw new UnsupportedOperationException(String.format("Unable to perform operation: %s on: %s, unknown",
69 operationStack.getCurrentOperation(), schema));
72 operationStack.exitingNode(modification);
76 protected abstract QName getQName(S schema);
78 private Optional<N> modifyContainer(S schema, Optional<N> actual, Optional<N> modification,
79 OperationStack operationStack) throws DataModificationException {
81 if (!actual.isPresent()) {
85 if (!modification.isPresent()) {
89 Set<YangInstanceIdentifier.PathArgument> toProcess = getChildrenToProcess(schema, actual, modification);
91 List<? extends DataContainerChild<?, ?>> merged = modifyContainerChildNodes(schema, operationStack,
92 actual.get(), modification.get(), toProcess);
93 return build(schema, merged);
96 private List<? extends DataContainerChild<?, ?>> modifyContainerChildNodes(S schema, OperationStack operationStack,
97 N actual, N modification, Set<YangInstanceIdentifier.PathArgument> toProcess) throws DataModificationException {
98 List<DataContainerChild<?, ?>> result = Lists.newArrayList();
100 for (YangInstanceIdentifier.PathArgument childToProcessId : toProcess) {
101 Object schemaOfChildToProcess = findSchema(schema, childToProcessId);
103 Optional<? extends DataContainerChild<?, ?>> modifiedValues = modifyContainerNode(operationStack, actual,
104 modification, childToProcessId, schemaOfChildToProcess);
106 if (modifiedValues.isPresent()) {
107 result.add(modifiedValues.get());
114 private Optional<? extends DataContainerChild<?, ?>> modifyContainerNode(OperationStack operationStack, N actual,
115 N modification, YangInstanceIdentifier.PathArgument childToProcess, Object schemaChild)
116 throws DataModificationException {
118 Optional<DataContainerChild<?, ?>> storedChildren = actual.getChild(childToProcess);
119 Optional<DataContainerChild<?, ?>> modifiedChildren = modification.getChild(childToProcess);
121 return NodeDispatcher.dispatchChildModification(schemaChild, storedChildren, modifiedChildren, operationStack);
124 private Object findSchema(S schema, YangInstanceIdentifier.PathArgument childToProcessId) {
125 if (childToProcessId instanceof YangInstanceIdentifier.AugmentationIdentifier) {
126 return findSchemaForAugment(schema, (YangInstanceIdentifier.AugmentationIdentifier) childToProcessId);
128 return findSchemaForChild(schema, childToProcessId.getNodeType());
132 protected abstract Object findSchemaForChild(S schema, QName nodeType);
134 protected abstract Object findSchemaForAugment(S schema, YangInstanceIdentifier.AugmentationIdentifier childToProcessId);
136 private Optional<N> build(S schema, List<? extends DataContainerChild<?, ?>> result) {
137 DataContainerNodeBuilder<?, N> b = getBuilder(schema);
139 // TODO skip empty container nodes ? e.g. if container looses all its child nodes
140 // if(result.isEmpty()) {
141 // return Optional.absent();
144 for (DataContainerChild<?, ?> dataContainerChild : result) {
145 b.withChild(dataContainerChild);
147 return Optional.of(b.build());
150 protected abstract DataContainerNodeBuilder<?, N> getBuilder(S schema);
152 protected Set<YangInstanceIdentifier.PathArgument> getChildrenToProcess(S schema, Optional<N> actual,
153 Optional<N> modification) throws DataModificationException {
154 Set<YangInstanceIdentifier.PathArgument> qNames = Sets.newLinkedHashSet();
156 qNames.addAll(getChildQNames(actual));
157 qNames.addAll(getChildQNames(modification));
161 private Set<? extends YangInstanceIdentifier.PathArgument> getChildQNames(Optional<N> actual) {
162 Set<YangInstanceIdentifier.PathArgument> qNames = Sets.newLinkedHashSet();
164 for (DataContainerChild<? extends YangInstanceIdentifier.PathArgument, ?> child : actual.get().getValue()) {
165 qNames.add(child.getIdentifier());
171 private static final class NodeDispatcher {
173 private static final LeafNodeModification LEAF_NODE_MODIFICATION = new LeafNodeModification();
174 private static final LeafSetNodeModification LEAF_SET_NODE_MODIFICATION = new LeafSetNodeModification();
175 private static final AugmentationNodeModification AUGMENTATION_NODE_MODIFICATION = new AugmentationNodeModification();
176 private static final MapNodeModification MAP_NODE_MODIFICATION = new MapNodeModification();
177 private static final ContainerNodeModification CONTAINER_NODE_MODIFICATION = new ContainerNodeModification();
178 private static final ChoiceNodeModification CHOICE_NODE_MODIFICATION = new ChoiceNodeModification();
180 static Optional<? extends DataContainerChild<?, ?>> dispatchChildModification(Object schemaChild,
181 Optional<DataContainerChild<?, ?>> actual, Optional<DataContainerChild<?, ?>> modification,
182 OperationStack operations) throws DataModificationException {
184 if (schemaChild instanceof LeafSchemaNode) {
185 return onLeafNode((LeafSchemaNode) schemaChild, actual, modification, operations);
186 } else if (schemaChild instanceof ContainerSchemaNode) {
187 return onContainerNode((ContainerSchemaNode) schemaChild, actual, modification, operations);
188 } else if (schemaChild instanceof LeafListSchemaNode) {
189 return onLeafSetNode((LeafListSchemaNode) schemaChild, actual, modification, operations);
190 } else if (schemaChild instanceof AugmentationSchema) {
191 return onAugmentationNode((AugmentationSchema) schemaChild, actual, modification, operations);
192 } else if (schemaChild instanceof ListSchemaNode) {
193 return onMapNode((ListSchemaNode) schemaChild, actual, modification, operations);
194 } else if (schemaChild instanceof org.opendaylight.yangtools.yang.model.api.ChoiceNode) {
195 return onChoiceNode((org.opendaylight.yangtools.yang.model.api.ChoiceNode) schemaChild, actual,
196 modification, operations);
199 throw new IllegalArgumentException("Unknown schema node type " + schemaChild);
202 private static Optional<? extends DataContainerChild<?, ?>> onChoiceNode(
203 org.opendaylight.yangtools.yang.model.api.ChoiceNode schemaChild,
204 Optional<? extends DataContainerChild<?, ?>> actual,
205 Optional<? extends DataContainerChild<?, ?>> modification, OperationStack operations)
206 throws DataModificationException {
207 checkType(actual, ChoiceNode.class);
208 checkType(modification, ChoiceNode.class);
209 return CHOICE_NODE_MODIFICATION.modify(schemaChild, (Optional<ChoiceNode>) actual,
210 (Optional<ChoiceNode>) modification, operations);
213 private static Optional<? extends DataContainerChild<?, ?>> onMapNode(ListSchemaNode schemaChild,
214 Optional<? extends DataContainerChild<?, ?>> actual,
215 Optional<? extends DataContainerChild<?, ?>> modification, OperationStack operations)
216 throws DataModificationException {
217 checkType(actual, MapNode.class);
218 checkType(modification, MapNode.class);
219 return MAP_NODE_MODIFICATION.modify(schemaChild, (Optional<MapNode>) actual,
220 (Optional<MapNode>) modification, operations);
223 private static Optional<? extends DataContainerChild<?, ?>> onAugmentationNode(AugmentationSchema schemaChild,
224 Optional<? extends DataContainerChild<?, ?>> actual,
225 Optional<? extends DataContainerChild<?, ?>> modification, OperationStack operations)
226 throws DataModificationException {
227 checkType(actual, AugmentationNode.class);
228 checkType(modification, AugmentationNode.class);
229 return AUGMENTATION_NODE_MODIFICATION.modify(schemaChild, (Optional<AugmentationNode>) actual,
230 (Optional<AugmentationNode>) modification, operations);
233 private static Optional<? extends DataContainerChild<?, ?>> onLeafSetNode(LeafListSchemaNode schemaChild,
234 Optional<? extends DataContainerChild<?, ?>> actual,
235 Optional<? extends DataContainerChild<?, ?>> modification, OperationStack operations)
236 throws DataModificationException {
237 checkType(actual, LeafSetNode.class);
238 checkType(modification, LeafSetNode.class);
239 return LEAF_SET_NODE_MODIFICATION.modify(schemaChild, (Optional<LeafSetNode<?>>) actual,
240 (Optional<LeafSetNode<?>>) modification, operations);
243 private static Optional<? extends DataContainerChild<?, ?>> onContainerNode(ContainerSchemaNode schemaChild,
244 Optional<? extends DataContainerChild<?, ?>> actual,
245 Optional<? extends DataContainerChild<?, ?>> modification, OperationStack operations)
246 throws DataModificationException {
247 checkType(actual, ContainerNode.class);
248 checkType(modification, ContainerNode.class);
249 return CONTAINER_NODE_MODIFICATION.modify(schemaChild, (Optional<ContainerNode>) actual,
250 (Optional<ContainerNode>) modification, operations);
253 private static Optional<? extends DataContainerChild<?, ?>> onLeafNode(LeafSchemaNode schemaChild,
254 Optional<? extends DataContainerChild<?, ?>> actual,
255 Optional<? extends DataContainerChild<?, ?>> modification, OperationStack operations)
256 throws DataModificationException {
257 checkType(actual, LeafNode.class);
258 checkType(modification, LeafNode.class);
259 return LEAF_NODE_MODIFICATION.modify(schemaChild, (Optional<LeafNode<?>>) actual,
260 (Optional<LeafNode<?>>) modification, operations);
263 private static void checkType(Optional<? extends DataContainerChild<?, ?>> actual, Class<?> leafNodeClass) {
264 if (actual.isPresent()) {
265 Preconditions.checkArgument(leafNodeClass.isAssignableFrom(actual.get().getClass()),
266 "Unexpected node type, should be: %s, but was: %s, for: %s", leafNodeClass, actual.getClass(),