+++ /dev/null
-/*
- * Copyright (c) 2014 Cisco Systems, Inc. and others. All rights reserved.
- *
- * This program and the accompanying materials are made available under the
- * terms of the Eclipse Public License v1.0 which accompanies this distribution,
- * and is available at http://www.eclipse.org/legal/epl-v10.html
- */
-package org.opendaylight.yangtools.yang.data.impl.schema.tree;
-
-import com.google.common.base.MoreObjects.ToStringHelper;
-import java.util.Optional;
-import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier.NodeIdentifier;
-import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier.PathArgument;
-import org.opendaylight.yangtools.yang.data.api.schema.NormalizedNode;
-import org.opendaylight.yangtools.yang.data.api.schema.UnkeyedListEntryNode;
-import org.opendaylight.yangtools.yang.data.api.schema.UnkeyedListNode;
-import org.opendaylight.yangtools.yang.data.api.schema.builder.NormalizedNodeContainerBuilder;
-import org.opendaylight.yangtools.yang.data.api.schema.tree.DataTreeConfiguration;
-import org.opendaylight.yangtools.yang.data.api.schema.tree.IncorrectDataStructureException;
-import org.opendaylight.yangtools.yang.data.impl.schema.ImmutableNodes;
-import org.opendaylight.yangtools.yang.data.impl.schema.builder.impl.ImmutableUnkeyedListEntryNodeBuilder;
-import org.opendaylight.yangtools.yang.data.impl.schema.builder.impl.ImmutableUnkeyedListNodeBuilder;
-import org.opendaylight.yangtools.yang.data.spi.tree.MutableTreeNode;
-import org.opendaylight.yangtools.yang.data.spi.tree.TreeNode;
-import org.opendaylight.yangtools.yang.data.spi.tree.TreeNodeFactory;
-import org.opendaylight.yangtools.yang.data.spi.tree.Version;
-import org.opendaylight.yangtools.yang.model.api.ListSchemaNode;
-
-final class ListModificationStrategy extends SchemaAwareApplyOperation<ListSchemaNode> {
- private static final NormalizedNodeContainerSupport<NodeIdentifier, UnkeyedListEntryNode> ITEM_SUPPORT =
- new NormalizedNodeContainerSupport<>(UnkeyedListEntryNode.class,
- ImmutableUnkeyedListEntryNodeBuilder::create, ImmutableUnkeyedListEntryNodeBuilder::create);
-
- private final DataNodeContainerModificationStrategy<ListSchemaNode> entryStrategy;
- private final UnkeyedListNode emptyNode;
-
- ListModificationStrategy(final ListSchemaNode schema, final DataTreeConfiguration treeConfig) {
- entryStrategy = new DataNodeContainerModificationStrategy<>(ITEM_SUPPORT, schema, treeConfig);
- emptyNode = ImmutableNodes.listNode(schema.getQName());
- }
-
- @Override
- ListSchemaNode getSchema() {
- return entryStrategy.getSchema();
- }
-
- @Override
- Optional<? extends TreeNode> apply(final ModifiedNode modification, final Optional<? extends TreeNode> storeMeta,
- final Version version) {
- return AutomaticLifecycleMixin.apply(super::apply, this::applyWrite, emptyNode, modification, storeMeta,
- version);
- }
-
- @Override
- protected ChildTrackingPolicy getChildPolicy() {
- return ChildTrackingPolicy.ORDERED;
- }
-
- @Override
- protected TreeNode applyMerge(final ModifiedNode modification, final TreeNode currentMeta, final Version version) {
- throw new IllegalStateException(String.format("Merge of modification %s on unkeyed list should never be called",
- modification));
- }
-
- @Override
- protected TreeNode applyTouch(final ModifiedNode modification, final TreeNode currentMeta, final Version version) {
- throw new UnsupportedOperationException("UnkeyedList does not support subtree change.");
- }
-
- @Override
- protected TreeNode applyWrite(final ModifiedNode modification, final NormalizedNode newValue,
- final Optional<? extends TreeNode> currentMeta, final Version version) {
- final TreeNode newValueMeta = TreeNodeFactory.createTreeNode(newValue, version);
- if (modification.getChildren().isEmpty()) {
- return newValueMeta;
- }
-
- /*
- * This is where things get interesting. The user has performed a write and then she applied some more
- * modifications to it. So we need to make sense of that an apply the operations on top of the written value. We
- * could have done it during the write, but this operation is potentially expensive, so we have left it out of
- * the fast path.
- *
- * As it turns out, once we materialize the written data, we can share the code path with the subtree change. So
- * let's create an unsealed TreeNode and run the common parts on it -- which end with the node being sealed.
- */
- final MutableTreeNode mutable = newValueMeta.mutable();
- mutable.setSubtreeVersion(version);
-
- return mutateChildren(mutable, ImmutableUnkeyedListNodeBuilder.create((UnkeyedListNode) newValue), version,
- modification.getChildren());
- }
-
- /**
- * Applies write/remove diff operation for each modification child in modification subtree.
- * Operation also sets the Data tree references for each Tree Node (Index Node) in meta (MutableTreeNode) structure.
- *
- * @param meta MutableTreeNode (IndexTreeNode)
- * @param data DataBuilder
- * @param nodeVersion Version of TreeNode
- * @param modifications modification operations to apply
- * @return Sealed immutable copy of TreeNode structure with all Data Node references set.
- */
- @SuppressWarnings({ "rawtypes", "unchecked" })
- private TreeNode mutateChildren(final MutableTreeNode meta, final NormalizedNodeContainerBuilder data,
- final Version nodeVersion, final Iterable<ModifiedNode> modifications) {
-
- for (final ModifiedNode mod : modifications) {
- final PathArgument id = mod.getIdentifier();
- final Optional<? extends TreeNode> cm = meta.findChildByArg(id);
-
- final Optional<? extends TreeNode> result = resolveChildOperation(id).apply(mod, cm, nodeVersion);
- if (result.isPresent()) {
- final TreeNode tn = result.get();
- meta.putChild(tn);
- data.addChild(tn.getData());
- } else {
- meta.removeChild(id);
- data.removeChild(id);
- }
- }
-
- meta.setData(data.build());
- return meta.seal();
- }
-
- @Override
- public ModificationApplyOperation childByArg(final PathArgument arg) {
- return arg instanceof NodeIdentifier ? entryStrategy : null;
- }
-
- @Override
- void verifyValue(final NormalizedNode value) {
- // NOOP
- }
-
- @Override
- void recursivelyVerifyStructure(final NormalizedNode value) {
- // NOOP
- }
-
- @Override
- protected void checkTouchApplicable(final ModificationPath path, final NodeModification modification,
- final Optional<? extends TreeNode> current, final Version version) throws IncorrectDataStructureException {
- throw new IncorrectDataStructureException(path.toInstanceIdentifier(), "Subtree modification is not allowed.");
- }
-
- @Override
- void mergeIntoModifiedNode(final ModifiedNode node, final NormalizedNode value, final Version version) {
- // Unkeyed lists are always replaced
- node.write(value);
- }
-
- @Override
- ToStringHelper addToStringAttributes(final ToStringHelper helper) {
- return helper.add("entry", entryStrategy);
- }
-}
Code Review / yangtools.git / blobdiff