org.xmlBlaster.util.key
Class QueryKeySaxFactory

java.lang.Object
  org.xmlBlaster.util.SaxHandlerBase
      org.xmlBlaster.util.key.QueryKeySaxFactory

All Implemented Interfaces:

org.xml.sax.ContentHandler, org.xml.sax.ErrorHandler, I_QueryKeyFactory, org.xml.sax.ext.LexicalHandler

public final class QueryKeySaxFactory

extends SaxHandlerBase

implements I_QueryKeyFactory

Parsing xml Key (quality of service) of subscribe() and update().

All XmlKey's have the same XML minimal structure:

     <key oid='4711' queryType='EXACT'>
     </key>
 

or like this:

     <key oid='' queryType='XPATH'>
        //AGENT
     </key>
 

Example of the filter tag in the key (NOT EVALUATED -> use QoS):

  <key queryType='XPATH'>
     /xmlBlaster/key/RUGBY
     <filter type='ContentLength' version='1.0'>
       800
     </filter>
  <key>
 

Author:

xmlBlaster@marcelruff.info

See Also:

QueryKeyData, org.xmlBlaster.test.classtest.key.QueryKeyFactoryTest

Field Summary

Fields inherited from class org.xmlBlaster.util.SaxHandlerBase

character, locator, xmlLiteral, xmlSource

Constructor Summary

QueryKeySaxFactory(Global glob)
Can be used as singleton.

Method Summary

void	endElement(java.lang.String uri, java.lang.String localName, java.lang.String name) End element, event from SAX parser.
java.lang.String	getName() A human readable name of this factory
QueryKeyData	readObject(java.lang.String xmlKey) Parses the given xml Key and returns a QueryKeyData holding the data.
void	startElement(java.lang.String uri, java.lang.String localName, java.lang.String name, org.xml.sax.Attributes attrs) Start element, event from SAX parser.
java.lang.String	writeObject(QueryKeyData queryKeyData, java.lang.String extraOffset) Dump state of this object into a XML ASCII string.

Methods inherited from class org.xmlBlaster.util.SaxHandlerBase

characters, comment, endCDATA, endDocument, endDTD, endEntity, endPrefixMapping, error, fatalError, getUseLexicalHandler, ignorableWhitespace, init, init, init, notationDecl, processingInstruction, setDocumentLocator, setUseLexicalHandler, skippedEntity, startCDATA, startDocument, startDTD, startEntity, startPrefixMapping, toString, toXml, unparsedEntityDecl, warning

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Detail

QueryKeySaxFactory

public QueryKeySaxFactory(Global glob)

Can be used as singleton.

Method Detail

readObject

public QueryKeyData readObject(java.lang.String xmlKey)
                        throws XmlBlasterException

Parses the given xml Key and returns a QueryKeyData holding the data. Parsing of update() and subscribe() key is supported here.

Specified by:

readObject in interface I_QueryKeyFactory

Throws:

XmlBlasterException

startElement

public final void startElement(java.lang.String uri,
                               java.lang.String localName,
                               java.lang.String name,
                               org.xml.sax.Attributes attrs)

Start element, event from SAX parser.

Specified by:

startElement in interface org.xml.sax.ContentHandler

Overrides:

startElement in class SaxHandlerBase

Parameters:

name - Tag name

attrs - the attributes of the tag

endElement

public void endElement(java.lang.String uri,
                       java.lang.String localName,
                       java.lang.String name)

End element, event from SAX parser.

Specified by:

endElement in interface org.xml.sax.ContentHandler

Overrides:

endElement in class SaxHandlerBase

Parameters:

name - Tag name

writeObject

public final java.lang.String writeObject(QueryKeyData queryKeyData,
                                          java.lang.String extraOffset)

Dump state of this object into a XML ASCII string.

Specified by:

writeObject in interface I_QueryKeyFactory

Parameters:

extraOffset - indenting of tags for nice output

Returns:

internal state of the RequestBroker as a XML ASCII string

getName

public java.lang.String getName()

A human readable name of this factory

Specified by:

getName in interface I_QueryKeyFactory

Returns:

"QueryKeySaxFactory"