JSF Custom ConverterTag Error, always NULL!

Question

Hello all,
The code that I am dealing with is a custom subclass that we created to add functionality to the javax.faces.webapp.ConverterTag class. The purpose is to add Regular Expression search and replace to the converter. Whenever it is run though, we get the following error:
30 Jan 2007 10:32:48,962 ERROR org.apache.myfaces.application.ApplicationImpl - Could not instantiate converter null
java.lang.NullPointerException
at org.apache.myfaces.application.ApplicationImpl.createConverter(ApplicationImpl.java:476)
at javax.faces.webapp.ConverterTag.createConverter(ConverterTag.java:94)
at com.intecbilling.prm.common.RegexConverterTag.createConverter(RegexConverterTag.java:45)
at javax.faces.webapp.ConverterTag.doStartTag(ConverterTag.java:60)
This code used to work, but someone changed something in the environment (not in the code) and now we have no idea what happened. Any ideas would be GREATLY appreciated!

Answer 1

Yes, it is defined with the following:
<converter>
<converter-id>RegexConverter</converter-id>
<converter-class>com.intecbilling.prm.common.RegexConverter</converter-class>
</converter>
There is a custom tag library that was created also as follows:
<tag>
<name>RegexConverter</name>
<tag-class>com.intecbilling.prm.common.RegexConverterTag</tag-class>
<attribute>
<name>pattern</name>
<type>String</type>
</attribute>
</tag>
It is being invoked as follows:
<h:outputText value="blah blah">
<i:RegexConverter pattern="pattern" />
</h:outputText>
Is the RegexConverterTag supposed to include the converter-id in the faces-config.xml file? If this is the case, I cannot understand why the code worked before the last update...
I hope that information helps.