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//---PACKAGE DECLARATION--- |
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|
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//---IMPORTS--- |
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import java.io.*; |
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import java.util.ArrayList; |
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import org.xml.sax.*; |
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import javax.xml.parsers.SAXParserFactory; |
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import javax.xml.parsers.ParserConfigurationException; |
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import javax.xml.parsers.SAXParser; |
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|
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/** |
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* XMLStreamParser - Used to build XMLPacket objects. |
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* |
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* @author $Author: $ |
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* @version $Id: $ |
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*/ |
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public class XMLStreamParser extends HandlerBase { |
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//---FINAL ATTRIBUTES--- |
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|
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/** |
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* The current CVS revision of this class |
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*/ |
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public final String REVISION = "$Revision: $"; |
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|
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//---STATIC METHODS--- |
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|
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//---CONSTRUCTORS--- |
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|
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/** |
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* Constructor for the XMLStreamParser. |
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*/ |
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public XMLStreamParser (XMLPacket packet) { |
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_packet = packet; |
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} |
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|
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//---PUBLIC METHODS--- |
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|
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public void startDocument () throws SAXException { |
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//System.out.println("Packet found"); |
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} |
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public void endDocument () throws SAXException { |
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//System.out.println("Packet Ended"); |
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} |
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|
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/** |
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* Add each tag's attribute to the XMLPacket. |
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* Note that all attributes within an opening tag are |
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* stored as "someroot.sometag.attributes.attribute_name" |
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* E.g. If <packet> is the root node, then: |
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* <packet machine_name="raptor"> |
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* is stored as: |
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* "packet.attributes.machine_name" |
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* within the XMLPacket. |
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*/ |
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public void startElement (String name, AttributeList attrs) throws SAXException { |
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_indentLevel++; |
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_tagList.add(name); |
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if (attrs != null) { |
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for (int i = 0; i < attrs.getLength (); i++) { |
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_packet.addParam(getPath()+".attributes."+attrs.getName(i), attrs.getValue(i)); |
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} |
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} |
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} |
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|
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/** |
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* When an XML element is finished with, we must remove |
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* the tag name from the tagList and decrement the indent |
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* level. |
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*/ |
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public void endElement (String name) throws SAXException { |
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_tagList.remove(_tagList.size()-1); |
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_indentLevel--; |
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} |
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|
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/** |
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* Any text falling within a pair of terminal tags must |
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* be added to the XMLPacket. Trim leading and trailing |
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* spaces and do not bother to add if there is no data |
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* specified within the tags. |
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*/ |
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public void characters (char[] buf, int offset, int len) throws SAXException { |
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String s = new String(buf, offset, len); |
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if (!s.trim().equals("")) { |
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_packet.addParam(getPath(), s); |
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} |
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} |
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|
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//---PRIVATE METHODS--- |
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|
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/** |
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* Return the heirarchical string to be used as a key value |
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* in the XMLPacket. |
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*/ |
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private String getPath () { |
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String path = (String)_tagList.get(0); |
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if (_tagList.size() > 0) { |
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for (int i = 1 ; i < _tagList.size() ; i++) { |
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path = path + "." + (String)_tagList.get(i); |
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} |
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} |
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return path; |
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} |
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|
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//---ACCESSOR/MUTATOR METHODS--- |
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|
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//---ATTRIBUTES--- |
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|
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private int _indentLevel = 0; |
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private ArrayList _tagList = new ArrayList(); |
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private XMLPacket _packet; |
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|
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//---STATIC ATTRIBUTES--- |
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|
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} |
