| 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 |
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 |
/** |
| 15 |
* XMLPacketMaker - Creates an XMLPacket object. |
| 16 |
* |
| 17 |
* @author $Author: tdb1 $ |
| 18 |
* @version $Id: XMLPacketMaker.java,v 1.11 2001/03/10 00:49:39 tdb1 Exp $ |
| 19 |
*/ |
| 20 |
public class XMLPacketMaker extends DefaultHandler { |
| 21 |
|
| 22 |
//---FINAL ATTRIBUTES--- |
| 23 |
|
| 24 |
/** |
| 25 |
* The current CVS revision of this class |
| 26 |
*/ |
| 27 |
public final String REVISION = "$Revision: 1.11 $"; |
| 28 |
|
| 29 |
//---STATIC METHODS--- |
| 30 |
|
| 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 |
_xml = xml; |
| 40 |
} |
| 41 |
|
| 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 |
|
| 62 |
try { |
| 63 |
// Parse the input |
| 64 |
InputSource inputSource = new InputSource(new StringReader(_xml)); |
| 65 |
SAXParser saxParser = factory.newSAXParser(); |
| 66 |
|
| 67 |
saxParser.parse(inputSource, new XMLStringParser(packet)); |
| 68 |
} |
| 69 |
catch (Exception e) { |
| 70 |
// couldn't parse the XML for some reason |
| 71 |
throw new InvalidXMLException("Could not parse the XML: "+_xml); |
| 72 |
} |
| 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 |
/** |
| 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 |
} |
