Custom xpath function

Question

i am creating custom xpath function in jdeveloper(10g).i hav followed every step given in http://prsync.com/oracle/custom-xpath-function-in-bpel--7718.even after configuring jdeveloper,the custom function is nt there in the list of functions.also if anyone can explain the functionality of the mapping(what each element is doing) given in PreBuiltExtensionFunctions.xml file.thanx.
.

Answer 1

When I remove entry from $ORACLE_HOME/bpel/system/config/xpath-functions.xml . (
<function id="getTimeDifference" arity="2">
<classname>ajr.TimeDifference</classname>
<comment>
<![CDATA[The signature of this function is <i>ajr:getTimeDifference(time1, time2)</i>.
      The arguments to the function:
      <ol type="1">
          <li>time1 - String or element containing the datetime of the start of the interval</li>
          <li>time2 - String or element containing the datetime of the end of the interval</li>
      </ol>
      Returns: an XML duration formatted string]]>
</comment>
<property id="namespace-uri">
<value>http://ajr/utilities/xpath</value>
<comment>Namespace URI for this function</comment>
</property>
<property id="namespace-prefix">
<value>ajr</value>
<comment>Namespace prefix for this function</comment>
</property>
</function>)
Everything works fine!
Deploying to http://localhost:8888 domain: default. Please wait....
[10:37:58 AM] Please check Ant log to determine whether the project deployed successfully.