com.infoscape.proteus.filter
Class ExpandedSource

java.lang.Object
  |
  +--com.infoscape.proteus.filter.FilteredSource
        |
        +--com.infoscape.proteus.filter.ExpandedSource

All Implemented Interfaces:

MessageHandler, MessageSource, Transactional

public class ExpandedSource

extends FilteredSource

An ExpandedSource is a FilteredSource whose filter may return more than one message. It caches the results of the call to the filter in a list and returns elements from the list with each call to getMessage() until the list is empty, at which point it makes another call to the source getmessage() and calls the filter again.

Constructor Summary

ExpandedSource(org.jdom.Element elt)

Method Summary

java.lang.Object

getMessage()

Methods inherited from class com.infoscape.proteus.filter.FilteredSource

commit, disconnect, getConnection, reconnect, rollback, setSyncPoint

Methods inherited from class java.lang.Object

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

Constructor Detail

ExpandedSource

public ExpandedSource(org.jdom.Element elt)
               throws java.lang.Exception

Parameters:

elt -

Throws:

java.lang.Exception

Method Detail

getMessage

public java.lang.Object getMessage()
                            throws java.lang.Exception

Specified by:

getMessage in interface MessageSource

Overrides:

getMessage in class FilteredSource

Throws:

java.lang.Exception