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/*
 * 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.test.api;

import org.apache.jackrabbit.test.AbstractJCRTest;
import org.apache.jackrabbit.test.NotExecutableException;

import javax.jcr.RepositoryException;
import javax.jcr.Node;
import javax.jcr.Session;
import javax.jcr.ReferentialIntegrityException;
import javax.jcr.InvalidItemStateException;
import javax.jcr.nodetype.NoSuchNodeTypeException;

/**
 * NodeUUIDTest contains all tests for the
 * javax.jcr.Node class that require a UUID (and therefore are
 * optional). If the repository does not support the node type mix:referenceable
 * a {@link NotExecutableException} is thrown.
 *
 * @test
 * @sources NodeUUIDTest.java
 * @executeClass org.apache.jackrabbit.test.api.NodeUUIDTest
 * @keywords level2
 */
public class NodeUUIDTest extends AbstractJCRTest {

    /**
     * Tries to remove a node that is a reference target using {@link
     * Node#save()}.
 
Procedure:  Creates two nodes with same
     * session
 One has a referencing property pointing to the other
     * node
 Target node gets removed.
  This should
     * generate a {@link javax.jcr.ReferentialIntegrityException} upon save.
     * 

Prerequisites:  javax.jcr.tck.NodeUUIDTest.nodetype
     * must allow a property of type {@link javax.jcr.PropertyType#REFERENCE}
     * javax.jcr.tck.NodeUUIDTest.propertyname1 name of the
     * property of type {@link javax.jcr.PropertyType#REFERENCE}
     * javax.jcr.tck.NodeUUIDTest.nodetype2 must have the mixin
     * type mix:referenceable assigned.
 
     */
    public void testSaveReferentialIntegrityException() throws RepositoryException, NotExecutableException {
        checkMixReferenceable();

        // get default workspace test root node using superuser session
        Node defaultRootNode = (Node) superuser.getItem(testRootNode.getPath());

        // create a node with a property of type PropertyType.REFERENCE
        Node referencingNode = defaultRootNode.addNode(nodeName1, testNodeType);

        // create a node with a jcr:uuid property to serve as target
        Node refTargetNode = defaultRootNode.addNode(nodeName2, getProperty("nodetype2"));
        // make sure, mix:referenceable is effective. some impls may require a save() call.
        defaultRootNode.save();


        // abort test if the repository does not allow setting
        // reference properties on this node
        ensureCanSetProperty(referencingNode, propertyName1, referencingNode.getSession().getValueFactory().createValue(refTargetNode));

        // set the reference
        referencingNode.setProperty(propertyName1, refTargetNode);

        // save the new nodes
        defaultRootNode.save();

        // remove the referenced node
        refTargetNode.remove();

        // try to save
        try {
            defaultRootNode.save();
            fail("Saving a deleted node using Node.save() that is a reference target should throw ReferentialIntegrityException");
        } catch (ReferentialIntegrityException e) {
            // ok, works as expected
        }
    }

    /**
     * Moves a referencable node using {@link javax.jcr.Session#move(String,
     * String)} with one session and saves afterward changes made with a second
     * session to the moved node using {@link Node#save()}.
     * 
     * Procedure: 
 Creates node 1 and node 2 with session 1
     * Gets reference to node 1 using session 2
 Session 1 moves
     * node 1 under node 2, saves changes
 Session 2 modifes node 1,
     * saves
  This should work (since the modified node is identified
     * by its UUID, not by position in repository) or throw an
     * InvalidItemStateException if 'move' is reported to the second
     * session as a sequence of remove and add events. 

Prerequisites: 
     * javax.jcr.tck.NodeUUIDTest.nodetype2 must have the mixin
     * type mix:referenceable assigned.
     * javax.jcr.tck.NodeUUIDTest.testSaveMovedRefNode.propertyname1
     * name of a property that can be modified in nodetype2 for
     * testing
 
     */
    public void testSaveMovedRefNode() throws RepositoryException, NotExecutableException {
        checkMixReferenceable();
        // get default workspace test root node using superuser session
        Node defaultRootNode = (Node) superuser.getItem(testRootNode.getPath());

        // create a node
        Node newParentNode = defaultRootNode.addNode(nodeName1, testNodeType);

        // create a referenceable node
        Node refTargetNode = defaultRootNode.addNode(nodeName2, getProperty("nodetype2"));

        // save the new nodes
        superuser.save();

        // get the moving node with session 2
        Session testSession = getHelper().getReadWriteSession();
        try {
            Node refTargetNodeSession2 = (Node) testSession.getItem(refTargetNode.getPath());

            //move the node with session 1
            superuser.move(refTargetNode.getPath(), newParentNode.getPath() + "/" + nodeName3);

            // make the move persistent with session 1
            superuser.save();

            // modify some prop of the moved node with session 2
            try {
                refTargetNodeSession2.setProperty(propertyName1, "test");

                // save it
                refTargetNodeSession2.save();
                // ok, works as expected
            } catch (InvalidItemStateException e) {
                // ok as well.
            }
        } finally {
            testSession.logout();
        }
    }

    /**
     * Checks if the repository supports the mixin mix:Referenceable otherwise a
     * {@link NotExecutableException} is thrown.
     *
     * @throws NotExecutableException if the repository does not support the
     *                                mixin mix:referenceable.
     */
    private void checkMixReferenceable() throws RepositoryException, NotExecutableException {
        try {
            superuser.getWorkspace().getNodeTypeManager().getNodeType(mixReferenceable);
        } catch (NoSuchNodeTypeException e) {
            throw new NotExecutableException("Repository does not support mix:referenceable");
        }
    }
}