XMI parser in java

**chiru** · March 7th, 2011, 10:15 AM

I have written a parser in java for parsing a XMI file...I want the content i fetched to be stored in a hash table..Im working on it not getting how to store the Id and name in a hash table...please help

XMI parser written is as follows

import java.io.*;
import java.io.IOException;
import java.io.FileNotFoundException;
import java.util.ArrayList;             
import java.util.Iterator;
import java.util.List;
 
import javax.xml.parsers.ParserConfigurationException;
import javax.xml.parsers.SAXParser;
import javax.xml.parsers.SAXParserFactory;                    
 
import org.xml.sax.Attributes;
import org.xml.sax.SAXException;
 
import org.xml.sax.helpers.DefaultHandler;
 
    class States {
 
	private String sxmiid;
 
	private String sname;
 
	public States() {
 
	}
 
	public States(String sxmiid,String sname) {
		this.sxmiid = sxmiid;
		this.sname = sname;
 
 
	}
	public String getSxmiid() {
		return sxmiid;
	}
 
	public void setSxmiid(String sxmiid) {
		this.sxmiid = sxmiid;
	}
 
 
	public String getSname() {
		return sname;
	}
 
	public void setSname(String sname) {
		this.sname = sname;
	}
 
 
 
	public String toString() {
		StringBuffer sb = new StringBuffer();
		sb.append("State id:" + getSxmiid());
		sb.append(", ");
		sb.append("State name:" + getSname());
		sb.append(". ");
		return sb.toString();
	}
}
 
class Events {
 
	private String exmiid;
 
	private String ename;
 
	private String esource;
 
	private String etarget;
 
	public Events(){
 
	}
 
	public Events(String exmiid,String ename,String esource,String etarget) {
 
		this.exmiid = exmiid;
		this.ename = ename;
		this.esource = esource;
		this.etarget = etarget;
 
	}
 
	public String getExmiid() {
		return exmiid;
	}
 
	public void setExmiid(String exmiid) {
		this.exmiid  = exmiid;
	}
 
 
 
	public String getEname() {
		return ename;
	}
 
	public void setEname(String ename) {
		this.ename = ename;
	}	
 
 
	public String getEsource() {
		return esource;
	}
 
	public void setEsource(String esource) {
		this.esource = esource;
	}
 
	public String getEtarget() {
 
		return etarget;
	}
 
	public void setEtarget(String etarget) {
		this.etarget = etarget;
	}
 
 
	public String toString() {
		StringBuffer sb = new StringBuffer();
		sb.append("Event id:" + getExmiid());
		sb.append(", ");
		sb.append("Event name:" + getEname());
		sb.append(". ");
		return sb.toString();
 
	}
}
 
 
public class XMIParser extends DefaultHandler {
 
	//List myEmpls;
	List myStates;
 
	List myEvents;
 
	String file;
 
	private String tempVal;
 
	private States tempStates;
	private Events tempEvents;
 
	public XMIParser() {
		myStates = new ArrayList();
		myEvents = new ArrayList();
	}
 
	public void runParser() throws IOException {
		parseDocument();
		printData();
		printFile();
	}
 
	private void parseDocument() {
 
		//get a factory
		SAXParserFactory spf = SAXParserFactory.newInstance();
		try {
 
			//get a new instance of parser
			SAXParser sp = spf.newSAXParser();
 
			//parse the file and also register this class for call backs
			sp.parse("cwm.xmi",this);
 
		}
		catch(SAXException se) {
			se.printStackTrace();
		}
		catch(ParserConfigurationException pce) {
			pce.printStackTrace();
		}
		catch (IOException ie) {
			ie.printStackTrace();
		}
 
	}
 
	/**
	 * Iterate through the list and print
	 * the contents
	 */
	private void printData() {
 
		//System.out.println("STATES_BEGIN");
		file="STATES_BEGIN\r\n\r\n";
		Iterator its = myStates.iterator();
		while(its.hasNext()) {
			//System.out.println(its.next().toString());
			file=file+its.next().toString()+"\r\n";
		}
		//System.out.println("STATES_END\n\n");
		file=file+"\r\nSTATES_END\r\n\r\n\r\n";		
 
		//System.out.println("TRANSITION_BEGIN");
		file=file+"TRANSITION_BEGIN\r\n\r\n";
		Iterator ite = myEvents.iterator();
		while(ite.hasNext()) {
			//System.out.println(ite.next().toString());
			file=file+ite.next().toString()+"\r\n";
		}
		//System.out.println("TRANSITION_END\n\n");
		file=file+"\r\nTRANSITION_END\r\n";
	}
	private void printFile() throws FileNotFoundException,IOException {
		byte buff[]=file.getBytes();
		OutputStream fo=new FileOutputStream("file2.txt");
		for(int i=0;i<buff.length;i++)
		fo.write(buff[i]);
		fo.close();
	}
 
 
	//Event Handlers
	public void startElement(String uri, String localName, String qName, Attributes attributes) throws SAXException {
 
		tempVal = "";
		if(qName.equalsIgnoreCase("subvertex")) {
 
			tempStates = new States();
			tempStates.setSxmiid(attributes.getValue("xmi:id"));
			tempStates.setSname(attributes.getValue("name"));
		}
		else if(qName.equalsIgnoreCase("transition")) {
 
			tempEvents = new Events();
			tempEvents.setExmiid(attributes.getValue("xmi:id"));
			tempEvents.setEname(attributes.getValue("name"));
		}
	}
 
 
	public void characters(char[] ch, int start, int length) throws SAXException {
		tempVal = new String(ch,start,length);
	}
 
	public void endElement(String uri, String localName, String qName) throws SAXException {
 
		if(qName.equalsIgnoreCase("subvertex")) {
			myStates.add(tempStates);
 
		}
		else if (qName.equalsIgnoreCase("transition")) {
			myEvents.add(tempEvents);
		}
 
 
	}
 
	public static void main(String[] args)throws IOException{
		XMIParser xp = new XMIParser();
		xp.runParser();
	}
 
}
 
/*end of XMI parser*/

The XMI file parsed is shown below

cwm.xmi

<?xml version="1.0" encoding="UTF-8"?>
<xmi:XMI xmi:version="2.1" xmlns:uml="http://schema.omg.org/spec/UML/2.1" xmlns:xmi="http://schema.omg.org/spec/XMI/2.1">
<xmi:Documentation exporter="Bouml" exporterVersion="1.14.1"/>
<uml:Model xmi:type="uml:Model" xmi:id="themodel" name="cwm">
<packagedElement xmi:type="uml:Package" xmi:id="BOUML_0x81_22" name ="cwm">
<packagedElement xmi:type="uml:StateMachine" xmi:id="BOUML_0x1f464_23" name="Coffee">
<region xmi:type="uml:Region" xmi:id="BOUML_IMPLICIT_REGION_0x1f464_23" name="Bouml_Implicit_Region">
<subvertex xmi:type="uml:State" xmi:id="BOUML_0x1f4e4_23" name="Idle">
<incoming xmi:idref="BOUML_0x1f864_24"/>
<incoming xmi:idref="BOUML_0x22be4_24"/>
<incoming xmi:idref="BOUML_0x1f464_24"/>
<region xmi:type="uml:Region" xmi:id="BOUML_IMPLICIT_REGION_0x1f4e4_23" name="Bouml_Implicit_Region">
<outgoing xmi:idref="BOUML_0x1f4e4_24"/>
</region>
</subvertex>
<subvertex xmi:type="uml:State" xmi:id="BOUML_0x1f564_23" name="Waiting">
<incoming xmi:idref="BOUML_0x1f4e4_24"/>
<region xmi:type="uml:Region" xmi:id="BOUML_IMPLICIT_REGION_0x1f564_23" name="Bouml_Implicit_Region">
<outgoing xmi:idref="BOUML_0x1f564_24"/>
</region>
</subvertex>
<subvertex xmi:type="uml:State" xmi:id="BOUML_0x1f5e4_23" name="Verification">
<incoming xmi:idref="BOUML_0x1f564_24"/>
<region xmi:type="uml:Region" xmi:id="BOUML_IMPLICIT_REGION_0x1f5e4_23" name="Bouml_Implicit_Region">
<outgoing xmi:idref="BOUML_0x1f5e4_24"/>
<outgoing xmi:idref="BOUML_0x1f764_24"/>
</region>
</subvertex>
<subvertex xmi:type="uml:State" xmi:id="BOUML_0x1f664_23" name="Valve open">
<incoming xmi:idref="BOUML_0x1f5e4_24"/>
<region xmi:type="uml:Region" xmi:id="BOUML_IMPLICIT_REGION_0x1f664_23" name="Bouml_Implicit_Region">
<outgoing xmi:idref="BOUML_0x1f664_24"/>
</region>
</subvertex>
<subvertex xmi:type="uml:State" xmi:id="BOUML_0x1f6e4_23" name="Valve close">
<incoming xmi:idref="BOUML_0x1f664_24"/>
<region xmi:type="uml:Region" xmi:id="BOUML_IMPLICIT_REGION_0x1f6e4_23" name="Bouml_Implicit_Region">
<outgoing xmi:idref="BOUML_0x1f864_24"/>
</region>
</subvertex>
<subvertex xmi:type="uml:State" xmi:id="BOUML_0x1f764_23" name="Error">
<incoming xmi:idref="BOUML_0x1f764_24"/>
<region xmi:type="uml:Region" xmi:id="BOUML_IMPLICIT_REGION_0x1f764_23" name="Bouml_Implicit_Region">
<outgoing xmi:idref="BOUML_0x22be4_24"/>
</region>
</subvertex>
<subvertex xmi:type="uml:Pseudostate" xmi:id="BOUML_0x1f464_28" kind="initial">
<outgoing xmi:idref="BOUML_0x1f464_24"/>
</subvertex>
</region>
<transition xmi:type="uml:Transition" xmi:id="BOUML_0x1f4e4_24" name="Inserting 1st coin" source="BOUML_0x1f4e4_23" target="BOUML_0x1f564_23">
</transition>
<transition xmi:type="uml:Transition" xmi:id="BOUML_0x1f564_24" name="Inserting 2nd coin" source="BOUML_0x1f564_23" target="BOUML_0x1f5e4_23">
</transition>
<transition xmi:type="uml:Transition" xmi:id="BOUML_0x1f5e4_24" name="Signaling valve" source="BOUML_0x1f5e4_23" target="BOUML_0x1f664_23">
</transition>
<transition xmi:type="uml:Transition" xmi:id="BOUML_0x1f764_24" name="Inserting wrong coin" source="BOUML_0x1f5e4_23" target="BOUML_0x1f764_23">
</transition>
<transition xmi:type="uml:Transition" xmi:id="BOUML_0x1f664_24" name="Supply of coffee" source="BOUML_0x1f664_23" target="BOUML_0x1f6e4_23">
</transition>
<transition xmi:type="uml:Transition" xmi:id="BOUML_0x1f864_24" name="System signal" source="BOUML_0x1f6e4_23" target="BOUML_0x1f4e4_23">
</transition>
<transition xmi:type="uml:Transition" xmi:id="BOUML_0x22be4_24" name="reset signal" source="BOUML_0x1f764_23" target="BOUML_0x1f4e4_23">
</transition>
<transition xmi:type="uml:Transition" xmi:id="BOUML_0x1f464_24" name="process start" source="BOUML_0x1f464_28" target="BOUML_0x1f4e4_23">
</transition>
</packagedElement>
</packagedElement>
</uml:Model>
</xmi:XMI>

/*end of xmi file*/

The content I fetched is stored in the file2.txt
the file is shown below

STATES_BEGIN

State id:BOUML_0x1f4e4_23, State name:Idle.
State id:BOUML_0x1f564_23, State name:Waiting.
State id:BOUML_0x1f5e4_23, State name:Verification.
State id:BOUML_0x1f664_23, State name:Valve open.
State id:BOUML_0x1f6e4_23, State name:Valve close.
State id:BOUML_0x1f764_23, State name:Error.
State id:BOUML_0x1f464_28, State name:null.

STATES_END

TRANSITION_BEGIN

Event id:BOUML_0x1f4e4_24, Event name:Inserting 1st coin.
Event id:BOUML_0x1f564_24, Event name:Inserting 2nd coin.
Event id:BOUML_0x1f5e4_24, Event name:Signaling valve.
Event id:BOUML_0x1f764_24, Event name:Inserting wrong coin.
Event id:BOUML_0x1f664_24, Event name:Supply of coffee.
Event id:BOUML_0x1f864_24, Event name:System signal.
Event id:BOUML_0x22be4_24, Event name:reset signal.
Event id:BOUML_0x1f464_24, Event name:process start.

TRANSITION_END
/*end of file2.txt*/

**JavaPF** · March 7th, 2011, 11:43 AM

Hello chiru. Welcome to the Java Programming Forums.

What happens when you run the code? Are any exceptions thrown?

**chiru** · March 13th, 2011, 11:54 PM

we r running on jdk 1.6, j creator,running successfully. But i want the content i fetched to be stored in a hash table,like i need the state id and state name in the hash table.if i give state id ,state name should be fetched from the hash table.

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