2 * Copyright (c) 2014 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.impl.schema.tree;
10 import static com.google.common.base.Preconditions.checkArgument;
12 import com.google.common.base.Preconditions;
13 import com.google.common.base.Predicates;
14 import com.google.common.base.Verify;
15 import com.google.common.collect.Collections2;
16 import com.google.common.collect.ImmutableList;
17 import com.google.common.collect.ImmutableMap;
18 import com.google.common.collect.ImmutableMap.Builder;
19 import java.util.Collection;
20 import java.util.HashMap;
22 import java.util.Map.Entry;
23 import java.util.Optional;
24 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier.AugmentationIdentifier;
25 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier.NodeIdentifier;
26 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier.PathArgument;
27 import org.opendaylight.yangtools.yang.data.api.schema.ChoiceNode;
28 import org.opendaylight.yangtools.yang.data.api.schema.DataContainerChild;
29 import org.opendaylight.yangtools.yang.data.api.schema.NormalizedNode;
30 import org.opendaylight.yangtools.yang.data.api.schema.NormalizedNodes;
31 import org.opendaylight.yangtools.yang.data.api.schema.tree.DataTreeConfiguration;
32 import org.opendaylight.yangtools.yang.data.api.schema.tree.DataValidationFailedException;
33 import org.opendaylight.yangtools.yang.data.api.schema.tree.spi.TreeNode;
34 import org.opendaylight.yangtools.yang.data.api.schema.tree.spi.Version;
35 import org.opendaylight.yangtools.yang.data.impl.schema.ImmutableNodes;
36 import org.opendaylight.yangtools.yang.data.impl.schema.builder.api.DataContainerNodeBuilder;
37 import org.opendaylight.yangtools.yang.data.impl.schema.builder.impl.ImmutableChoiceNodeBuilder;
38 import org.opendaylight.yangtools.yang.model.api.AugmentationSchemaNode;
39 import org.opendaylight.yangtools.yang.model.api.CaseSchemaNode;
40 import org.opendaylight.yangtools.yang.model.api.ChoiceSchemaNode;
41 import org.opendaylight.yangtools.yang.model.api.DataSchemaNode;
43 final class ChoiceModificationStrategy extends AbstractNodeContainerModificationStrategy {
44 private final Map<PathArgument, ModificationApplyOperation> childNodes;
45 // FIXME: enforce leaves not coming from two case statements at the same time
46 private final Map<CaseEnforcer, Collection<CaseEnforcer>> exclusions;
47 private final Map<PathArgument, CaseEnforcer> caseEnforcers;
48 private final ChoiceNode emptyNode;
50 ChoiceModificationStrategy(final ChoiceSchemaNode schema, final DataTreeConfiguration treeConfig) {
51 super(ChoiceNode.class, treeConfig);
53 final Builder<PathArgument, ModificationApplyOperation> childBuilder = ImmutableMap.builder();
54 final Builder<PathArgument, CaseEnforcer> enforcerBuilder = ImmutableMap.builder();
55 for (final CaseSchemaNode caze : schema.getCases().values()) {
56 final CaseEnforcer enforcer = CaseEnforcer.forTree(caze, treeConfig);
57 if (enforcer != null) {
58 for (final Entry<NodeIdentifier, DataSchemaNode> e : enforcer.getChildEntries()) {
59 childBuilder.put(e.getKey(), SchemaAwareApplyOperation.from(e.getValue(), treeConfig));
60 enforcerBuilder.put(e.getKey(), enforcer);
62 for (final Entry<AugmentationIdentifier, AugmentationSchemaNode> e
63 : enforcer.getAugmentationEntries()) {
64 childBuilder.put(e.getKey(), new AugmentationModificationStrategy(e.getValue(), caze, treeConfig));
65 enforcerBuilder.put(e.getKey(), enforcer);
69 childNodes = childBuilder.build();
70 caseEnforcers = enforcerBuilder.build();
72 final Map<CaseEnforcer, Collection<CaseEnforcer>> exclusionsBuilder = new HashMap<>();
73 for (final CaseEnforcer e : caseEnforcers.values()) {
74 exclusionsBuilder.put(e, ImmutableList.copyOf(
75 Collections2.filter(caseEnforcers.values(), Predicates.not(Predicates.equalTo(e)))));
77 exclusions = ImmutableMap.copyOf(exclusionsBuilder);
78 emptyNode = ImmutableNodes.choiceNode(schema.getQName());
83 Optional<TreeNode> apply(final ModifiedNode modification, final Optional<TreeNode> storeMeta,
84 final Version version) {
85 return AutomaticLifecycleMixin.apply(super::apply, emptyNode, modification, storeMeta, version);
89 void checkApplicable(final ModificationPath path, final NodeModification modification,
90 final Optional<TreeNode> current, final Version version) throws DataValidationFailedException {
91 AutomaticLifecycleMixin.checkApplicable(super::checkApplicable, emptyNode, path, modification, current,
96 public Optional<ModificationApplyOperation> getChild(final PathArgument child) {
97 return Optional.ofNullable(childNodes.get(child));
101 @SuppressWarnings("rawtypes")
102 protected DataContainerNodeBuilder createBuilder(final NormalizedNode<?, ?> original) {
103 checkArgument(original instanceof ChoiceNode);
104 return ImmutableChoiceNodeBuilder.create((ChoiceNode) original);
108 void verifyStructure(final NormalizedNode<?, ?> writtenValue, final boolean verifyChildren) {
109 if (verifyChildrenStructure() && verifyChildren) {
110 enforceCases(writtenValue);
112 super.verifyStructure(writtenValue, verifyChildren);
115 private void enforceCases(final TreeNode tree) {
116 enforceCases(tree.getData());
119 private void enforceCases(final NormalizedNode<?, ?> normalizedNode) {
120 Verify.verify(normalizedNode instanceof ChoiceNode);
121 final Collection<DataContainerChild<?, ?>> children = ((ChoiceNode) normalizedNode).getValue();
122 if (!children.isEmpty()) {
123 final DataContainerChild<?, ?> firstChild = children.iterator().next();
124 final CaseEnforcer enforcer = Verify.verifyNotNull(caseEnforcers.get(firstChild.getIdentifier()),
125 "Case enforcer cannot be null. Most probably, child node %s of choice node %s does not belong "
126 + "in current tree type.", firstChild.getIdentifier(), normalizedNode.getIdentifier());
128 // Make sure no leaves from other cases are present
129 for (final CaseEnforcer other : exclusions.get(enforcer)) {
130 for (final PathArgument id : other.getAllChildIdentifiers()) {
131 final Optional<NormalizedNode<?, ?>> maybeChild = NormalizedNodes.getDirectChild(normalizedNode,
133 Preconditions.checkArgument(!maybeChild.isPresent(),
134 "Child %s (from case %s) implies non-presence of child %s (from case %s), which is %s",
135 firstChild.getIdentifier(), enforcer, id, other, maybeChild.orElse(null));
139 // Make sure all mandatory children are present
140 enforcer.enforceOnTreeNode(normalizedNode);
145 protected TreeNode applyMerge(final ModifiedNode modification, final TreeNode currentMeta, final Version version) {
146 final TreeNode ret = super.applyMerge(modification, currentMeta, version);
152 protected TreeNode applyWrite(final ModifiedNode modification, final Optional<TreeNode> currentMeta,
153 final Version version) {
154 final TreeNode ret = super.applyWrite(modification, currentMeta, version);
160 protected TreeNode applyTouch(final ModifiedNode modification, final TreeNode currentMeta, final Version version) {
161 final TreeNode ret = super.applyTouch(modification, currentMeta, version);
167 protected NormalizedNode<?, ?> createEmptyValue(final NormalizedNode<?, ?> original) {
168 checkArgument(original instanceof ChoiceNode);
169 return ImmutableChoiceNodeBuilder.create().withNodeIdentifier(((ChoiceNode) original).getIdentifier()).build();