| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You 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.apache.jackrabbit.oak.plugins.document; |
| |
| import java.io.IOException; |
| import java.io.InputStream; |
| |
| import org.apache.jackrabbit.oak.api.Blob; |
| import org.apache.jackrabbit.oak.plugins.memory.MemoryNodeBuilder; |
| import org.apache.jackrabbit.oak.spi.state.ApplyDiff; |
| import org.apache.jackrabbit.oak.spi.state.NodeBuilder; |
| import org.apache.jackrabbit.oak.spi.state.NodeState; |
| import org.jetbrains.annotations.NotNull; |
| |
| import static com.google.common.base.Preconditions.checkNotNull; |
| import static org.apache.jackrabbit.oak.spi.state.AbstractNodeState.checkValidName; |
| |
| /** |
| * A node builder implementation for DocumentMK. |
| */ |
| class DocumentNodeBuilder extends AbstractDocumentNodeBuilder { |
| |
| private final DocumentRootBuilder root; |
| |
| private NodeState base; |
| |
| private NodeState rootBase; |
| |
| DocumentNodeBuilder(MemoryNodeBuilder base, |
| String name, |
| DocumentRootBuilder root) { |
| super(base, name); |
| this.root = checkNotNull(root); |
| } |
| |
| @Override |
| @NotNull |
| public NodeState getBaseState() { |
| if (base == null || rootBase != root.getBaseState()) { |
| base = getParent().getBaseState().getChildNode(getName()); |
| rootBase = root.getBaseState(); |
| } |
| return base; |
| } |
| |
| @Override |
| protected DocumentNodeBuilder createChildBuilder(String name) { |
| return new DocumentNodeBuilder(this, name, root); |
| } |
| |
| @Override |
| public boolean moveTo(@NotNull NodeBuilder newParent, @NotNull String newName) { |
| checkNotNull(newParent); |
| checkValidName(newName); |
| if (isRoot() || !exists() || newParent.hasChildNode(newName)) { |
| return false; |
| } |
| if (newParent instanceof DocumentNodeBuilder) { |
| // check if this builder is an ancestor of newParent or newParent |
| DocumentNodeBuilder parent = (DocumentNodeBuilder) newParent; |
| while (parent != null) { |
| if (parent == this) { |
| return false; |
| } |
| if (parent.getParent() != root) { |
| parent = (DocumentNodeBuilder) parent.getParent(); |
| } else { |
| // reached root builder |
| break; |
| } |
| } |
| } |
| if (newParent.exists()) { |
| // remember current root state and reset root in case |
| // something goes wrong |
| NodeState rootState = root.getNodeState(); |
| boolean success = false; |
| try { |
| annotateSourcePath(); |
| NodeState nodeState = getNodeState(); |
| new ApplyDiff(newParent.child(newName)).apply(nodeState); |
| removeRecursive(this); |
| success = true; |
| return true; |
| } finally { |
| if (!success) { |
| root.reset(rootState); |
| } |
| } |
| } else { |
| return false; |
| } |
| } |
| |
| @Override |
| public Blob createBlob(InputStream stream) throws IOException { |
| return root.createBlob(stream); |
| } |
| |
| @Override |
| public boolean remove() { |
| return removeRecursive(this); |
| } |
| |
| //---------------------< internal >----------------------------------------- |
| |
| private boolean removeInternal() { |
| return super.remove(); |
| } |
| |
| private static boolean removeRecursive(DocumentNodeBuilder builder) { |
| for (String name : builder.getChildNodeNames()) { |
| removeRecursive(builder.getChildNode(name)); |
| } |
| return builder.removeInternal(); |
| } |
| } |