writexml.java

本人历尽千辛万苦找的clustream中的jar包

package org.osu.ogsa.stream.util;
import org.osu.ogsa.stream.util.xmlconfig.*;

import javax.xml.parsers.DocumentBuilder; 
import javax.xml.parsers.DocumentBuilderFactory;  
import javax.xml.parsers.FactoryConfigurationError;  
import javax.xml.parsers.ParserConfigurationException;
 
import org.xml.sax.SAXException;  
import org.xml.sax.SAXParseException;  

import java.io.File;
import java.io.IOException;
import java.io.*;
import java.net.URL;

import org.w3c.dom.Document;
import org.w3c.dom.DOMException;
import org.w3c.dom.Element;
import org.w3c.dom.Node;
import org.w3c.dom.NodeList;
import org.apache.axis.utils.XMLUtils;
import org.apache.log4j.*;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;

public class WriteXml{
	
	Document doc;
	Element app;
//        private static Category log = Category.getInstance(WriteXml.class.getName());
        static Log log = LogFactory.getLog(WriteXml.class.getName());
	public WriteXml() throws javax.xml.parsers.ParserConfigurationException
	{
		doc = XMLUtils.newDocument();
		app = doc.createElement("Application");

		app.setAttribute("name", "client");
		app.setAttributeNS("http://www.w3.org/2001/XMLSchema-instance", "xsi:noNamespaceSchemaLocation", "schema/stream/Stream/XMLConfigurator.xsd");
	}


	public WriteXml(String schema) throws javax.xml.parsers.ParserConfigurationException
	{
		doc = XMLUtils.newDocument();
		app = doc.createElement("Application");

		app.setAttribute("name", "client");
		app.setAttributeNS("http://www.w3.org/2001/XMLSchema-instance", "xsi:noNamespaceSchemaLocation", schema);
	}
	
	public void initXMLConfig_for_dynamic()
	{
		Integer tempInt;
		int numSpots, numStages;
		String strHandle;
		if(((Boolean)XMLConfigurator.getParameter("filelogging")).booleanValue())
			addPara("filelogging", "Boolean", "true");
		else
			addPara("filelogging", "Boolean", "false");

		numStages = ((Integer)XMLConfigurator.getParameter("numStages")).intValue();
		addPara("numStages", "Integer", Integer.toString(numStages));
		Node topStages = addTopic("stages");
		for(int i = 1; i <= numStages; i ++)
		{
			log.debug(topStages);
			String strStage = "stage" + i;
			Node topStageI = addTopic(topStages, strStage);
			if(i == 1)
			{
				//the number of placements (sources)
				tempInt = (Integer)XMLConfigurator.getParameter("stages|stage1|numPlacements");
				numSpots= tempInt.intValue();
				addPara(topStageI, "numPlacements", "Integer", Integer.toString(numSpots));
				for(int j = 1; j <= numSpots; j++)
				{
					//The placements' information
					strHandle = ((URL)(XMLConfigurator.getParameter("stages|stage1|placement" + j))).toString();
					addObject(topStageI, "placement" + j, "java.net.URL", "String", strHandle);
				}
			}
			//The class's information
			String strClassName = "stages|" + "stage"+ i+  "|class|class_name";
			String strClass = (String)XMLConfigurator.getParameter(strClassName);
			String strClassLocation = "stages|" + "stage" + (i) + "|class|location";
			String strLocation = ((URL)XMLConfigurator.getParameter(strClassLocation)).toString();
			addClass(topStageI, strClass, strLocation);
			//The destination
			if(i == numStages)
			{
				//the number of placements (sources)
				addPara(topStageI, "numPlacements", "Integer", "1");
				//The placements' information
				strHandle = ((URL)(XMLConfigurator.getParameter("stages|stage"+ numStages + "|placement1"))).toString();
				addObject(topStageI, "placement1", "java.net.URL", "String", strHandle);
			}
		}
		XMLUtils.PrettyElementToStream((Element)app, System.out);
	}
//	public void initXMLConfig(XMLConfigurator xmlConfig)
	public void initXMLConfig_for_static()
	{
		Integer tempInt;
		int numSpots, numStages;
		if(((Boolean)XMLConfigurator.getParameter("filelogging")).booleanValue())
			addPara("filelogging", "Boolean", "true");
		else
			addPara("filelogging", "Boolean", "false");

		numStages = ((Integer)XMLConfigurator.getParameter("numStages")).intValue();
		addPara("numStages", "Integer", Integer.toString(numStages));
		Node topStages = addTopic("stages");
		for(int i = 1; i <= numStages; i ++)
		{
			log.debug(topStages);
			String strStage = "stage" + i;
			Node topStageI = addTopic(topStages, strStage);
			if(i == 1)
			{
				//the number of placements (sources)
				tempInt = (Integer)XMLConfigurator.getParameter("sources|numSpots");
				numSpots= tempInt.intValue();
				addPara(topStageI, "numPlacements", "Integer", Integer.toString(numSpots));
				for(int j = 1; j <= numSpots; j++)
				{
					//The placements' information
					String strIp = (String)(XMLConfigurator.getParameter("sources|spot" + j));
					addObject(topStageI, "placement" + j, "java.net.URL", "String", "http://"+strIp+":8080/ogsa/services/Stream/StreamService");
				}
			}
			//The class's information
			String strClassName = "stages|" + "stage"+ i+  "|class|class_name";
			String strClass = (String)XMLConfigurator.getParameter(strClassName);
			String strClassLocation = "stages|" + "stage" + (i) + "|class|location";
			String strLocation = (String)XMLConfigurator.getParameter(strClassLocation);
			addClass(topStageI, strClass, strLocation);
			//The destination
			if(i == numStages)
			{
				//the number of placements (sources)
				addPara(topStageI, "numPlacements", "Integer", "1");
				//The placements' information
				String strIp = (String)(XMLConfigurator.getParameter("destination"));
				addObject(topStageI, "placement1", "java.net.URL", "String", "http://"+strIp+":8080/ogsa/services/Stream/StreamService");
			}
		}
		XMLUtils.PrettyElementToStream((Element)app, System.out);
	}

	public Node addTopic(String name)
	{
		return addTopic(app, name);
	}

	public Node addTopic(Node father, String name)
	{
		log.debug(name);
		Node en = __createTopic(name);
		log.debug(en);
		father.appendChild(en);
		return en;
	}

	private Node __createTopic(String name)
	{
		Element en = doc.createElement("Topic");
		if(en == null)
			System.out.println("aksdjfaskdjf");
		log.debug(en);
		en.setAttribute("name", name);
		return en;
	}


	public Node addPara(Node father, String name, String type, String value)
	{
		Node en = __createParameter(name, type, value);
		father.appendChild(en);
		return en;
	}

	public Node addPara(String name, String type, String value)
	{
		return addPara(app, name, type, value);
	}

	private Node __createParameter(String name, String type, String value)
	{
		Element en = doc.createElement("Parameter");
		Element child_en = doc.createElement(type);
		Node nodeValue = doc.createTextNode(value);

		en.appendChild(child_en);
		child_en.appendChild(nodeValue);
		en.setAttribute("name", name);
		return en;
	}
	
	public Node addObject(String name, String class_name, String type, String type_value)
	{
		return addObject(app, name, class_name, type, type_value);
	}

	public Node addObject(Node father, String name, String class_name, String type, String type_value)
	{
		Node en = __createObject(name, class_name, type, type_value);
		father.appendChild(en);
		return en;
	}


	public Node __createObject(String name, String class_name, String type, String type_value)
	{
		Element en = doc.createElement("Object");
		Element child_en = doc.createElement(type);
		Node nodeValue = doc.createTextNode(type_value);

		en.appendChild(child_en);
		child_en.appendChild(nodeValue);

		en.setAttribute("name", name);
		en.setAttribute("class", class_name);
		return en;
	}

	public Node addObject(int nstage, String name, String class_name, String type, String type_value)
	{
		String strStage = "stage" + nstage;
		log.debug(strStage);
		Element stage = getElementByAttr("Topic", "name", strStage);
		if(stage != null)
		{
			log.debug("there is a node named "+ strStage);
			//Node stage = ndlist.item(0);
			return addObject(stage, name, class_name, type, type_value);
		}
		else //Create a stage node
		{
			log.debug("there is not a node named "+ strStage);
			Element stages = getElementByAttr("Topic", "name", "stages");
			//Node stages = stageslist.item(0);
			Node n1 = addTopic(stages, strStage);
			return addObject(n1, name, class_name, type, type_value);
		}

	}

	public Node addPara(int nstage, String name, String type, String value)
	{
		String strStage = "stage" + nstage;
		Element stage = getElementByAttr("Topic", "name", strStage);

		if(stage != null)
		{
//			Node stage = ndlist.item(0);
			return addPara(stage, name, type, value);
		}
		else //Create a stage node
		{
			log.debug("there is not a node named "+ strStage);
			Element stages = getElementByAttr("Topic", "name", "stages");
			//Node stages = stageslist.item(0);
			Node n1 = addTopic(stages, strStage);
			return addPara(n1, name, type, value);
		}
	}


	public void addClass(int nstage, String class_name, String location)
	{
		String strStage = "stage" + nstage;
		Element stage = getElementByAttr("Topic", "name", strStage);
		if(stage != null)
		{
//			Node stage = ndlist.item(0);
			addClass(stage, class_name, location);
		}
		else //Create a stage node
		{
			Element stages = getElementByAttr("Topic", "name", "stages");
//			Node stages = stageslist.item(0);
			Node n1 = addTopic(stages, strStage);
			addClass(n1, class_name, location);
		}
	}

	private void addClass(Node stage, String class_name, String location)
	{
		Node topClass = addTopic(stage, "class");
		addPara(topClass, "class_name", "String", class_name);
		addObject(topClass, "location", "java.net.URL", "String", location);
	}

	public void addSpecialClass(String class_name, String location)
	{
		Node top = addTopic("special_class");
		addPara(top, "class_name", "String", class_name);
		addObject(top, "location", "java.net.URL", "String", location);
	}
	public Element getElementByAttr(String tagName, String attrName, String attrValue)
	{
		NodeList elementList = app.getElementsByTagName(tagName);
		int len = elementList.getLength();
		log.debug("length:"+len);
		while(len > 0)
		{
			Element foundNode = (Element)elementList.item(len-1);
			if(attrValue.equals(foundNode.getAttribute(attrName)))
					return foundNode;
			len --;
		}
		return null;
	}
			
	public Element getApp()
	{
		return app;
		
	}


	public static void main(String args[] ) {
		try{
		WriteXml xml = new WriteXml();

		xml.addPara("filelogging", "Boolean", "false");
		xml.addPara("numStages", "Integer", "3");
		Node topStages = xml.addTopic("stages");
			Node topStage1 = xml.addTopic(topStages, "stage1");
				xml.addPara(topStage1, "numPlacements", "Integer", "4");
				Node topClass = xml.addTopic(topStage1, "class");
					xml.addPara(topClass, "class_name", "String", "counting.Producer");
					xml.addObject(topClass, "location", "java.net.URL", "String", "http://localhost/");
				xml.addObject(topStage1, "placement1", "java.net.URL", "String", "http://localhost:8080/ogsa/services/Stream/StreamService");
				xml.addPara(topStage1, "connection1", "String", "placement1");

		XMLUtils.PrettyElementToStream(xml.getApp(), System.out);
		}
		catch(Exception e)
		{
			System.out.println(e);
		}
	}
}