| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. 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.session.nodetype; |
| |
| import java.util.HashSet; |
| import java.util.Set; |
| |
| import javax.jcr.nodetype.NodeTypeIterator; |
| import javax.jcr.nodetype.NodeTypeManager; |
| |
| import org.apache.jackrabbit.base.nodetype.BaseNodeTypeManager; |
| import org.apache.jackrabbit.iterator.ArrayNodeTypeIterator; |
| import org.apache.jackrabbit.session.SessionHelper; |
| import org.apache.jackrabbit.state.nodetype.NodeTypeManagerState; |
| import org.apache.jackrabbit.state.nodetype.NodeTypeState; |
| |
| /** |
| * Immutable and session-bound node type manager frontend. An instance |
| * of this class presents the underlying node type manager state using |
| * the JCR NodeTypeManager interface. |
| * <p> |
| * By not exposing the setter methods of the underlying state instance, |
| * this class intentionally makes it impossible for a JCR client to modify |
| * node type information. |
| */ |
| public final class SessionNodeTypeManager extends BaseNodeTypeManager |
| implements NodeTypeManager { |
| |
| /** Helper for accessing the current session. */ |
| private final SessionHelper helper; |
| |
| /** The underlying node type manager state instance. */ |
| private final NodeTypeManagerState state; |
| |
| /** |
| * Creates a node type manager frontend that is bound to the |
| * given session and underlying node type manager state. |
| * |
| * @param helper helper for accessing the current session |
| * @param state underlying node type manager state |
| */ |
| public SessionNodeTypeManager( |
| SessionHelper helper, NodeTypeManagerState state) { |
| this.helper = helper; |
| this.state = state; |
| } |
| |
| /** |
| * Returns all available node types. The returned node types are |
| * SessionNodeTypes instantiated using the node type states returned |
| * by the underlying node type manager state. |
| * |
| * @return all node types |
| * @see SessionNodeType |
| * @see NodeTypeManager#getAllNodeTypes() |
| * @see NodeTypeManagerState#getNodeTypeStates() |
| */ |
| public NodeTypeIterator getAllNodeTypes() { |
| Set types = new HashSet(); |
| NodeTypeState[] states = state.getNodeTypeStates(); |
| for (int i = 0; i < states.length; i++) { |
| types.add(new SessionNodeType(helper, states[i])); |
| } |
| return new ArrayNodeTypeIterator(types); |
| } |
| |
| /** |
| * Compares objects for equality. Returns <code>true</code> if the |
| * given object is a SessionNodeTypeManager with the same underlying node |
| * type manager state and session. |
| * <p> |
| * Note that the node type manager state class does not override the |
| * equals method and thus the mutable state instances are compared for |
| * reference equality. |
| * |
| * @param that the object to compare this object with |
| * @return <code>true</code> if the objects are equal, |
| * <code>false</code> otherwise |
| * @see Object#equals(Object) |
| */ |
| public boolean equals(Object that) { |
| if (this == that) { |
| return true; |
| } else if (that instanceof SessionNodeTypeManager) { |
| return state.equals(((SessionNodeTypeManager) that).state) |
| && helper.equals(((SessionNodeTypeManager) that).helper); |
| } else { |
| return false; |
| } |
| } |
| |
| /** |
| * Returns a hash code for this object. To satisfy the equality |
| * constraints the returned hash code is a combination of the |
| * hash codes of the underlying node type manager state and session. |
| * |
| * @return hash code |
| * @see Object#hashCode() |
| */ |
| public int hashCode() { |
| int code = 17; |
| code = code * 37 + state.hashCode(); |
| code = code * 37 + helper.hashCode(); |
| return code; |
| } |
| |
| } |