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Thread: XMI parser in java

  1. #1
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    Default XMI parser in java

    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*/


  2. #2
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    Default Re: XMI parser in java

    Hello chiru. Welcome to the Java Programming Forums.

    What happens when you run the code? Are any exceptions thrown?
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  3. #3
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    Default Re: XMI parser in java

    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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