org.ikasan.framework.component.routing
Class XPathBooleanRouter

java.lang.Object
  org.ikasan.framework.component.routing.XPathBooleanRouter

All Implemented Interfaces:

Router, FlowComponent

public class XPathBooleanRouter
extends Object
implements Router

XPath router evaluation based on evaluating the incoming XPath expressions into Boolean results. Where these results are TRUE the associated XPath expression transition is added to the returned List for subsequent routing. The pre-configured parser and a map of XPath expressions and their associated transition name are passed to this class on construction.

Author:

Ikasan Development Team

Field Summary

Fields inherited from interface org.ikasan.framework.component.routing.Router

DEFAULT_RESULT

Constructor Summary

XPathBooleanRouter(DocumentBuilderFactory factory, Map<String,String> xpathExpressionToTransition)
Constructor with no default transition supported.

XPathBooleanRouter(DocumentBuilderFactory factory, Map<String,String> xpathExpressionToTransition, boolean returnsDefaultForNonMatches)
Constructor

Method Summary

List<String>

onEvent(Event event) Implementation of the onEvent XPathBooleanRoute

Methods inherited from class java.lang.Object

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

Constructor Detail

XPathBooleanRouter

public XPathBooleanRouter(DocumentBuilderFactory factory,
                          Map<String,String> xpathExpressionToTransition,
                          boolean returnsDefaultForNonMatches)

Constructor

Parameters:

factory - - configured DocumentBuilderFactory

xpathExpressionToTransition - - configured XPath expressions and associated transitions

returnsDefaultForNonMatches - - use the 'default' transition if no other transitions are matched

XPathBooleanRouter

public XPathBooleanRouter(DocumentBuilderFactory factory,
                          Map<String,String> xpathExpressionToTransition)

Constructor with no default transition supported.

Parameters:

factory - - configured DocumentBuilderFactory

xpathExpressionToTransition - - configured XPath expressions and associated transitions

Method Detail

onEvent

public List<String> onEvent(Event event)
                     throws RouterException

Implementation of the onEvent XPathBooleanRoute

Specified by:

onEvent in interface Router

Parameters:

event - The event to route

Returns:

List

Throws:

RouterException - Exception if we could not route the event