cms/util/XMLPacketMaker.java

//---PACKAGE DECLARATION---
package uk.ac.ukc.iscream.xml;

//---IMPORTS---
import java.io.*;
import java.util.ArrayList;

import org.xml.sax.*;
import javax.xml.parsers.SAXParserFactory;
import javax.xml.parsers.ParserConfigurationException;
import javax.xml.parsers.SAXParser;

import uk.ac.ukc.iscream.core.*;

/**
 * XMLPacketMaker - Creates an XMLPacket object.
 *
 * @author  $Author$
 * @version $Id$
 */
public class XMLPacketMaker extends HandlerBase {

//---FINAL ATTRIBUTES---

    /**
     * The current CVS revision of this class
     */
    public final String REVISION = "$Revision: 1.1 $";
    
//---STATIC METHODS---

//---CONSTRUCTORS---

    // Constructor for accepting XML input.
    public XMLPacketMaker (String xml, Logger logger) {
        this.xml = xml;
        this.logger = logger;
    }

//---PUBLIC METHODS---

    public XMLPacket createXMLPacket() {

        // Create the XMLPacket to store values in.
        XMLPacket packet = new XMLPacket();

        // Use the default (non-validating) parser
        SAXParserFactory factory = SAXParserFactory.newInstance();
        try {

            // Parse the input
            InputSource inputSource = new InputSource(new StringReader(xml));
            SAXParser saxParser = factory.newSAXParser();
            saxParser.parse(inputSource, new XMLStringParser(packet));

        }
        catch (Exception e) {
            logger.write(this.toString(), Logger.WARNING, "An invalid XML UDP packet has been detected: "+packet.printAll());
            //t.printStackTrace();
            return null;
        }
        
        return packet;
    }

    /**
     * Overrides the {@link java.lang.Object#toString() Object.toString()}
     * method to provide clean logging (every class should have this).
     *
     * @return the name of this class and its CVS revision
     */
    public String toString() {
        return this.getClass().getName() + "(" + REVISION.substring(11, REVISION.length() - 2) + ")";
    }

//---PRIVATE METHODS---

//---ACCESSOR/MUTATOR METHODS---

//---ATTRIBUTES---

    String xml;
    Logger logger;

//---STATIC ATTRIBUTES---

}
Revision:	1.3
Committed:	Wed Nov 29 19:11:53 2000 UTC (23 years, 5 months ago) by tdb
Branch:	MAIN
Changes since 1.2:	+44 -6 lines
Log Message:	Made the files conform to the template source file. Also made changes to fit in with the new packages structure. No actual code was changed.
#	User	Rev	Content
1	tdb	1.3	//---PACKAGE DECLARATION---
2			package uk.ac.ukc.iscream.xml;
3
4			//---IMPORTS---
5	pjm2	1.1	import java.io.*;
6			import java.util.ArrayList;
7
8			import org.xml.sax.*;
9			import javax.xml.parsers.SAXParserFactory;
10			import javax.xml.parsers.ParserConfigurationException;
11			import javax.xml.parsers.SAXParser;
12
13	pjm2	1.2	import uk.ac.ukc.iscream.core.*;
14
15	tdb	1.3	/**
16			* XMLPacketMaker - Creates an XMLPacket object.
17			*
18			* @author $Author$
19			* @version $Id$
20			*/
21			public class XMLPacketMaker extends HandlerBase {
22	pjm2	1.1
23	tdb	1.3	//---FINAL ATTRIBUTES---
24
25			/**
26			* The current CVS revision of this class
27			*/
28			public final String REVISION = "$Revision: 1.1 $";
29
30			//---STATIC METHODS---
31
32			//---CONSTRUCTORS---
33	pjm2	1.1
34			// Constructor for accepting XML input.
35	pjm2	1.2	public XMLPacketMaker (String xml, Logger logger) {
36	pjm2	1.1	this.xml = xml;
37	pjm2	1.2	this.logger = logger;
38	pjm2	1.1	}
39
40	tdb	1.3	//---PUBLIC METHODS---
41
42	pjm2	1.1	public XMLPacket createXMLPacket() {
43
44			// Create the XMLPacket to store values in.
45			XMLPacket packet = new XMLPacket();
46
47			// Use the default (non-validating) parser
48			SAXParserFactory factory = SAXParserFactory.newInstance();
49			try {
50
51			// Parse the input
52			InputSource inputSource = new InputSource(new StringReader(xml));
53			SAXParser saxParser = factory.newSAXParser();
54			saxParser.parse(inputSource, new XMLStringParser(packet));
55
56			}
57			catch (Exception e) {
58	pjm2	1.2	logger.write(this.toString(), Logger.WARNING, "An invalid XML UDP packet has been detected: "+packet.printAll());
59	pjm2	1.1	//t.printStackTrace();
60			return null;
61			}
62
63			return packet;
64			}
65	tdb	1.3
66			/**
67			* Overrides the {@link java.lang.Object#toString() Object.toString()}
68			* method to provide clean logging (every class should have this).
69			*
70			* @return the name of this class and its CVS revision
71			*/
72			public String toString() {
73			return this.getClass().getName() + "(" + REVISION.substring(11, REVISION.length() - 2) + ")";
74			}
75
76			//---PRIVATE METHODS---
77
78			//---ACCESSOR/MUTATOR METHODS---
79
80			//---ATTRIBUTES---
81
82	pjm2	1.1	String xml;
83	pjm2	1.2	Logger logger;
84	tdb	1.3
85			//---STATIC ATTRIBUTES---
86
87			}