embeddedhandlertest.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.io.File;

import org.dom4j.io.SAXReader;

/**
 * TestEmbeddedHandler
 * 
 * @author <a href="mailto:[e-mail]">FB </a>
 */
public class EmbeddedHandlerTest extends AbstractTestCase {
    private static final int MAIN_READER = 0;

    private static final int ON_END_READER = 1;

    protected String[] testDocuments = {"xml/test/FranzBeilMain.xml"};

    private StringBuffer[] results = {new StringBuffer(), new StringBuffer()};

    protected int test;

    public static void main(String[] args) {
        TestRunner.run(EmbeddedHandlerTest.class);
    }

    // ---------------------------------------------
    // Test case(s)
    // ---------------------------------------------
    public void testMainReader() throws Exception {
        test = MAIN_READER;
        readDocuments();
    }

    public void testOnEndReader() throws Exception {
        test = ON_END_READER;
        readDocuments();
    }

    public void testBothReaders() throws Exception {
        testMainReader();
        testOnEndReader();

        if (!results[MAIN_READER].toString().equals(
                results[ON_END_READER].toString())) {
            StringBuffer msg = new StringBuffer();
            msg.append("Results of tests should be equal!\n");
            msg.append("Results testMainReader():\n"
                    + results[MAIN_READER].toString());
            msg.append("Results testOnEndReader():\n"
                    + results[ON_END_READER].toString());
            throw new Exception(msg.toString());
        }
    }

    // ---------------------------------------------
    // Implementation methods
    // ---------------------------------------------
    private void readDocuments() throws Exception {
        for (int i = 0; i < testDocuments.length; i++) {
            File testDoc = getFile(testDocuments[i]);
            String mainDir = testDoc.getParent();
            SAXReader reader = new SAXReader();
            ElementHandler mainHandler = new MainHandler(mainDir);
            reader.addHandler("/main/import", mainHandler);
            getDocument(testDocuments[i], reader);
        }
    }

    // Handler classes
    // ---------------------------------------------
    class MainHandler implements ElementHandler {
        private SAXReader mainReader;

        private String mainDir;

        public MainHandler(String dir) {
            mainReader = new SAXReader();
            mainDir = dir;
            mainReader.addHandler("/import/stuff", new EmbeddedHandler());
        }

        public void onStart(ElementPath path) {
        }

        public void onEnd(ElementPath path) {
            String href = path.getCurrent().attribute("href").getValue();
            Element importRef = path.getCurrent();
            Element parentElement = importRef.getParent();
            SAXReader onEndReader = new SAXReader();
            onEndReader.addHandler("/import/stuff", new EmbeddedHandler());

            File file = new File(mainDir + File.separator + href);
            Element importElement = null;

            try {
                if (test == MAIN_READER) {
                    importElement = mainReader.read(file).getRootElement();
                } else if (test == ON_END_READER) {
                    importElement = onEndReader.read(file).getRootElement();
                }
            } catch (Exception e) {
                // too bad that it's not possible to throw the exception at the
                // caller
                e.printStackTrace();
            }

            // prune and replace
            importRef.detach();
            parentElement.add(importElement);
        }
    }

    public class EmbeddedHandler implements ElementHandler {
        public void onStart(ElementPath path) {
            results[test].append(path.getCurrent().attribute("name").getValue()
                    + "\n");
        }

        public void onEnd(ElementPath path) {
        }
    }
}

/*
 * 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.
 */