XPathExceptionSelector (Cocoon Sitemap Components 1.0.0 API)

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org.apache.cocoon.selection
Class XPathExceptionSelector

java.lang.Object
  org.apache.cocoon.util.AbstractLogEnabled
      org.apache.cocoon.selection.AbstractSwitchSelector
          org.apache.cocoon.selection.ExceptionSelector
              org.apache.cocoon.selection.XPathExceptionSelector

All Implemented Interfaces:: Configurable, org.apache.cocoon.selection.Selector, org.apache.cocoon.selection.SwitchSelector, ThreadSafe

public class XPathExceptionSelector
extends ExceptionSelector

Additional to the inherited functionality from its superclass ExceptionSelector, this selector allows to define xpath expressions to evaluate supplemental information given in the thrown exception.

The configuration of this selector allows to map not only exceptions but also xpath expressions to symbolic names that are used in the <map:when> alternatives.

Example configuration :

   <map:selector type="error" src="....XPathExceptionSelector">
     <exception name="denied" class="my.comp.auth.AuthenticationFailure">
       <xpath name="PasswordWrong" test="authCode=10"/>
       <xpath name="PasswordExpired" test="errorCode=11"/>
       <xpath name="AccessForbidden" test="errorCode>11"/>
     </exception>
   </map:selector>

This example shows several features:

the test is the xpath expression that will be evaluated against the exception ,
an xpath expression can be given a name, which is used in the <map:when> tests

Since:: 2.1
Version:: $Id: XPathExceptionSelector.html 1304280 2012-03-23 11:18:01Z ilgrosso $

Field Summary

Fields inherited from interface org.apache.cocoon.selection.SwitchSelector

ROLE

Constructor Summary
`XPathExceptionSelector()`

Method Summary
`void`	`configure(Configuration conf)`
`Object`	`getSelectorContext(Map objectModel, Parameters parameters)` Compute the exception type, given the configuration and the exception stored in the object model.

Methods inherited from class org.apache.cocoon.selection.ExceptionSelector

select

Methods inherited from class org.apache.cocoon.selection.AbstractSwitchSelector

select

Methods inherited from class org.apache.cocoon.util.AbstractLogEnabled

getLogger, setLogger

Methods inherited from class java.lang.Object

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

Constructor Detail