org.xmlBlaster.util.key
Class MsgKeySaxFactory

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

All Implemented Interfaces:

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

public final class MsgKeySaxFactory
extends SaxHandlerBase
implements I_MsgKeyFactory

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

All XmlKey's have the same XML minimal structure:

    <key oid="12345"/>
 

or

    <key oid="12345">
       <!-- application specific tags -->
    </key>
 

where oid is a unique key.

A typical publish key could look like this:

     <key oid='4711' contentMime='text/xml'>
        <AGENT id='192.168.124.20' subId='1' type='generic'>
           <DRIVER id='FileProof' pollingFreq='10'>
           </DRIVER>
        </AGENT>
     </key>
 

Note that the AGENT and DRIVER tags are application know how, which you have to supply.
A well designed xml hierarchy of your problem domain is essential for a proper working xmlBlaster

NOTE: <![CDATA[ ... ]]> sections in the key are not supported

NOTE: Using tags like '<' will be transformed to '<c></c>' on toXml()

Author:

xmlBlaster@marcelruff.info

See Also:

MsgKeyData, MsgKeyFactoryTest

Field Summary

private Global	glob
private int	inKey helper flag for SAX parsing: parsing inside ?
private MsgKeyData	msgKeyData

Fields inherited from class org.xmlBlaster.util.SaxHandlerBase

character, locator, xmlLiteral, xmlSource

Constructor Summary

MsgKeySaxFactory(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
static void	main(java.lang.String[] args) java org.xmlBlaster.util.key.MsgKeySaxFactory
MsgKeyData	readObject(java.lang.String xmlKey) Parses the given xml Key and returns a MsgKeyData 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(MsgKeyData msgKeyData, 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

Field Detail

glob

private final Global glob

msgKeyData

private MsgKeyData msgKeyData

inKey

private int inKey

helper flag for SAX parsing: parsing inside ?

Constructor Detail

MsgKeySaxFactory

public MsgKeySaxFactory(Global glob)

Can be used as singleton.

Method Detail

readObject

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

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

Specified by:

readObject in interface I_MsgKeyFactory

Parameters:

the - XML based ASCII string

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(MsgKeyData msgKeyData,
                                          java.lang.String extraOffset)

Dump state of this object into a XML ASCII string.

Specified by:

writeObject in interface I_MsgKeyFactory

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_MsgKeyFactory

Returns:

"MsgKeySaxFactory"

main

public static void main(java.lang.String[] args)

java org.xmlBlaster.util.key.MsgKeySaxFactory