backedlisttest.java

解决如何把XML应用到JAVA里问题

/*
 * Copyright 2001-2005 (C) MetaStuff, Ltd. All Rights Reserved.
 *
 * This software is open source.
 * See the bottom of this file for the licence.
 */

package org.dom4j;

import junit.textui.TestRunner;

import java.util.List;

import org.dom4j.io.XMLWriter;

/**
 * A test harness to test the backed list feature of DOM4J
 * 
 * @author <a href="mailto:[e-mail]">James Strachan </a>
 * @version $Revision: 1.3 $
 */
public class BackedListTest extends AbstractTestCase {
    public static void main(String[] args) {
        TestRunner.run(BackedListTest.class);
    }

    // Test case(s)
    // -------------------------------------------------------------------------
    public void testXPaths() throws Exception {
        Element element = (Element) document.selectSingleNode("/root");
        mutate(element);
        element = (Element) document.selectSingleNode("//author");
        mutate(element);
    }

    public void testAddRemove() throws Exception {
        Element parentElement = (Element) document.selectSingleNode("/root");
        List children = parentElement.elements();
        int lastPos = children.size() - 1;
        Element child = (Element) children.get(lastPos);

        try {
            // should throw an exception cause we cannot add same child twice
            children.add(0, child);
            fail();
        } catch (IllegalAddException e) {
        }
    }

    public void testAddWithIndex() throws Exception {
        DocumentFactory factory = DocumentFactory.getInstance();

        Element root = (Element) document.selectSingleNode("/root");
        List children = root.elements(); // return a list of 2 author
        // elements

        assertEquals(2, children.size());

        children.add(1, factory.createElement("dummy1"));
        children = root.elements();

        assertEquals(3, children.size());

        children = root.elements("author");

        assertEquals(2, children.size());

        children.add(1, factory.createElement("dummy2"));

        children = root.elements();

        assertEquals(4, children.size());
        assertEquals("dummy1", ((Node) children.get(1)).getName());
        assertEquals("dummy2", ((Node) children.get(2)).getName());

        /*
         * Some tests for issue reported at http://tinyurl.com/4jxrc
         */
        children.add(children.size(), factory.createElement("dummy3"));
        children = root.elements("author");
        children.add(children.size(), factory.createElement("dummy4"));
    }

    // Implementation methods
    // -------------------------------------------------------------------------
    protected void mutate(Element element) throws Exception {
        DocumentFactory factory = DocumentFactory.getInstance();

        List list = element.elements();
        list.add(factory.createElement("last"));
        list.add(0, factory.createElement("first"));

        List list2 = element.elements();

        assertTrue("Both lists should contain same number of elements", list
                .size() == list2.size());

        XMLWriter writer = new XMLWriter(System.out);

        log("Element content is now: " + element.content());
        writer.write(element);
    }
}

/*
 * Redistribution and use of this software and associated documentation
 * ("Software"), with or without modification, are permitted provided that the
 * following conditions are met:
 * 
 * 1. Redistributions of source code must retain copyright statements and
 * notices. Redistributions must also contain a copy of this document.
 * 
 * 2. Redistributions in binary form must reproduce the above copyright notice,
 * this list of conditions and the following disclaimer in the documentation
 * and/or other materials provided with the distribution.
 * 
 * 3. The name "DOM4J" must not be used to endorse or promote products derived
 * from this Software without prior written permission of MetaStuff, Ltd. For
 * written permission, please contact [e-mail].
 * 
 * 4. Products derived from this Software may not be called "DOM4J" nor may
 * "DOM4J" appear in their names without prior written permission of MetaStuff,
 * Ltd. DOM4J is a registered trademark of MetaStuff, Ltd.
 * 
 * 5. Due credit should be given to the DOM4J Project - http://www.dom4j.org
 * 
 * THIS SOFTWARE IS PROVIDED BY METASTUFF, LTD. AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED. IN NO EVENT SHALL METASTUFF, LTD. OR ITS CONTRIBUTORS BE
 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 * 
 * Copyright 2001-2005 (C) MetaStuff, Ltd. All Rights Reserved.
 */