/*   Copyright 2004 The Apache Software Foundation
 *
 *   Licensed 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 dom.detailed;

import dom.common.Loader;
import junit.framework.TestCase;
import org.w3c.dom.*;


/**
 *
 *
 *
 */
public class MultipleDocsTest extends TestCase{
    String[] sXml=new String[]{"<foo0/>",
			       "<foo1 foo1_at=\"val0\"/>",
			       "<foo2 foo2_at=\"val0\">text</foo2>",
			       "<foo3 foo3_at=\"val0\">text <foo2 foo2_at=\"val0\">text</foo2> </foo3>",
			       "<foo4 xmlns:myns=\"foo.org\" myns:foo3_at=\"val0\">text <foo2 foo2_at=\"val0\">text</foo2> </foo4>",
			       "<foo5  xmlns:myns=\"foo_OUT.org\"><myns:foo4 xmlns:myns=\"foo.org\" myns:foo3_at=\"val0\">text <foo2 foo2_at=\"val0\">text</foo2> </myns:foo4></foo5>"
    };

    Thread[] threads;
    int nThreadCount=6;
    int nIterations=300;
    Document[] m_doc;

    public MultipleDocsTest(String name){
	super(name);
    }

    public void testRunThreads(){
	for (int j=0;j<nThreadCount;j++)
	    threads[j].start();
	for (int j = 0; j < nThreadCount; j++){
	    try{
		threads[j].join();
	    }
	    catch (InterruptedException e){
		System.err.println("Thread "+j+" interrupted");
	    }
	}
    }

    public void setUp() throws Exception{
	threads=new Thread[nThreadCount];
	for (int i=0;i<nThreadCount;i++){
            Loader loader=Loader.getLoader();
	    if (sXml==null) throw new IllegalArgumentException("Test bug : Initialize xml strings");
	    Document m_doc=(org.w3c.dom.Document)loader.load(sXml[i]);
	    threads[i] = new Thread(new Worker(i,m_doc,nIterations));
	}
    }


    private class Worker extends Thread{
	int _ID;
	Document doc;
	int nIter;
	public Worker(int ID,Document doc,int nIter){
	    this._ID=ID;
	    this.doc=doc;
	    this.nIter=nIter;
	}

	public void run(){
	    System.err.println("*** Thread "+_ID+" starting "+doc.getDocumentElement().getNodeName()+" "+nIter);
	    for ( int i = 0 ; i < nIter ; i++ ){
		//System.err.println("*** Thread "+_ID+" starting ");
		switch (0){//_ID

		case 0:{
		    doc.getDocumentElement().appendChild(doc.createElement("foobar"));
		    if ( i % 5==0 ){
			NodeList nl=doc.getDocumentElement().getElementsByTagName("foobar");
			if (nl.getLength()>0){
			    Element par=(Element)nl.item(0).getParentNode();
			    par.removeChild((Element)nl.item(0));
			}
		    }
		    // break;
		}case 1:{
		    ((Element)doc.getDocumentElement()).setAttributeNode(doc.createAttribute("foobar"));
		    if ( i % 5==0 ){
			NamedNodeMap nl=doc.getDocumentElement().getAttributes();
			if (nl.getLength()>0){
			    Element par=(Element)((Attr)nl.getNamedItem("foobar")).getOwnerElement();
			    par.removeAttribute("foobar");
			}
		    }
		    // break;
		}case 2:{
		    doc.getDocumentElement().appendChild(doc.createTextNode("foobar"));
		    if ( i % 5==0 ){
			NodeList nl=((Element)doc.getDocumentElement()).getElementsByTagName("foobar");
						    if (nl!=null && nl.getLength()>0){
				Element par=(Element)nl.item(i % nl.getLength()).getParentNode();
				par.removeChild((Element)nl.item(0));
			    }
			}
		    //  break;

		}case 3:{
		    Node n=doc.getDocumentElement().getFirstChild();
		    if (n!=null && (n instanceof Text) ){
			((Text)n).setData("newText");
		    if ( i % 5==0 ){
			int len;
			if ( ( len=((Text)n).getData().length() )>0)
			    ((Text)n).splitText(len/2);
		    }
		    }
		    //    break;
		}case 4:{
		    //  System.err.println("*** Thread "+_ID+" case 4 ");
		    NodeList n=((Element)doc.getDocumentElement()).getElementsByTagNameNS("foo:org","myns:foo2");
		    Attr at=doc.createAttribute("foo2_at");
		    if (n!=null && n.getLength()>0){
			((Element)n.item(0)).setAttributeNode(at);
			if ( i % 5==0 ){
			    ((Element)n.item(0)).removeAttributeNode(at);
			}
		    }
		}

		}

	    }
	}
    }

    public static void main(String[] a){
	try{
	    MultipleDocsTest test=new MultipleDocsTest("");
	    test.setUp();
	    test.testRunThreads();
	}catch (Throwable t){
	    t.printStackTrace(System.err);
	}
    }

}