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root/i-scream/projects/cms/source/util/uk/org/iscream/cms/util/XMLPacketMaker.java

Comparing projects/cms/source/util/uk/org/iscream/cms/util/XMLPacketMaker.java (file contents):
Revision 1.1 by pjm2, Wed Nov 22 08:40:53 2000 UTC vs.
Revision 1.12 by tdb, Sat Mar 10 02:03:55 2001 UTC

#	Line 1 | Line 1
1	+	//---PACKAGE DECLARATION---
2	+	package uk.ac.ukc.iscream.util;
3	+
4	+	//---IMPORTS---
5		import java.io.*;
6		import java.util.ArrayList;
7
8		import org.xml.sax.*;
9	<
9	>	import org.xml.sax.helpers.*;
10		import javax.xml.parsers.SAXParserFactory;
11		import javax.xml.parsers.ParserConfigurationException;
12		import javax.xml.parsers.SAXParser;
13
14	<	// Paul Mutton, pjm2@ukc.ac.uk
14	>	/**
15	>	* XMLPacketMaker - Creates an XMLPacket object.
16	>	*
17	>	* @author  $Author$
18	>	* @version $Id$
19	>	*/
20	>	public class XMLPacketMaker extends DefaultHandler {
21
22	<	// XMLPacketMaker - Creates an XMLPacket object.
13	<	public class XMLPacketMaker extends HandlerBase {
22	>	//---FINAL ATTRIBUTES---
23
24	<	// No-args constructor.  Generally not used.
25	<	public XMLPacketMaker () {
26	<	this.xml = "<packet></packet>";
27	<	}
24	>	/**
25	>	* The current CVS revision of this class
26	>	*/
27	>	public final String REVISION = "$Revision$";
28	>
29	>	//---STATIC METHODS---
30
31	<	// Constructor for accepting XML input.
31	>	//---CONSTRUCTORS---
32	>
33	>	/**
34	>	* Constructor for accepting XML input.
35	>	*
36	>	* @param xml A String of XML to process.
37	>	*/
38		public XMLPacketMaker (String xml) {
39	<	this.xml = xml;
39	>	_xml = xml;
40		}
41
42	<	public XMLPacket createXMLPacket() {
42	>	/**
43	>	* A static reference to the system saxParser factory
44	>	*/
45	>	private static SAXParserFactory factory = SAXParserFactory.newInstance();
46
47	+
48	+	//---PUBLIC METHODS---
49	+
50	+	/**
51	+	* Method to create an XML packet from the data this
52	+	* class was constructed with.
53	+	*
54	+	* @return an XMLPacket representing the XML String given
55	+	* @throws InvalidXMLException if the XML cannot be parsed
56	+	*/
57	+	public XMLPacket createXMLPacket() throws InvalidXMLException {
58	+
59		// Create the XMLPacket to store values in.
60		XMLPacket packet = new XMLPacket();
61	<
30	<	// Use the default (non-validating) parser
31	<	SAXParserFactory factory = SAXParserFactory.newInstance();
61	>
62		try {
33	–
63		// Parse the input
64	<	InputSource inputSource = new InputSource(new StringReader(xml));
64	>	InputSource inputSource = new InputSource(new StringReader(_xml));
65		SAXParser saxParser = factory.newSAXParser();
66	+
67		saxParser.parse(inputSource, new XMLStringParser(packet));
38	–
68		}
69		catch (Exception e) {
70	<	System.out.println("XMLPacketMaker - I just received an XML packet that did not contain valid XML.");
71	<	//t.printStackTrace();
43	<	return null;
70	>	// couldn't parse the XML for some reason
71	>	throw new InvalidXMLException("Could not parse the XML: "+_xml);
72		}
73	<
73	>	// parsed successfully, return the packet
74		return packet;
75		}
76	+
77	+	/**
78	+	* Overrides the {@link java.lang.Object#toString() Object.toString()}
79	+	* method to provide clean logging (every class should have this).
80	+	*
81	+	* This uses the uk.ac.ukc.iscream.util.NameFormat class
82	+	* to format the toString()
83	+	*
84	+	* @return the name of this class and its CVS revision
85	+	*/
86	+	public String toString() {
87	+	return FormatName.getName(
88	+	_name,
89	+	getClass().getName(),
90	+	REVISION);
91	+	}
92	+
93	+	//---PRIVATE METHODS---
94	+
95	+	//---ACCESSOR/MUTATOR METHODS---
96	+
97	+	//---ATTRIBUTES---
98	+
99	+	/**
100	+	* Holds the xml
101	+	*/
102	+	String _xml;
103
104	<	String xml;
105	<	}
104	>	/**
105	>	* This is the friendly identifier of the
106	>	* component this class is running in.
107	>	* eg, a Filter may be called "filter1",
108	>	* If this class does not have an owning
109	>	* component,  a name from the configuration
110	>	* can be placed here.  This name could also
111	>	* be changed to null for utility classes.
112	>	*/
113	>	private String _name = null;
114	>
115	>	//---STATIC ATTRIBUTES---
116	>
117	>	}

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