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From robert burrell donkin <robertburrelldon...@blueyonder.co.uk>
Subject Re: Digester throwing Null pointer exception while parsing rule XML
Date Sun, 02 Nov 2003 22:24:47 GMT
i'm afraid that your xml hasn't made it through but i suspect that you'll 
find that your classloader doesn't contain the digester DTD in the 
appropriate place. i suspect that you're using subclassing and so the code 
will be looking for the DTD amongst your classes rather than in the 
digester jar.


having said this, i feel that the existing behaviour could be improved as 
follows:

1. rather than an exception being thrown, an error should be logged.
2. if the digester DTD cannot be found in the subclass classloader, then 
the FromXmlRuleSet classloader should also be check. this should handle 
the case when subclassing is used.

unless anyone comes up with a reason not to make this change, i'll take a 
look at adding this tomorrow.

- robert

On Friday, October 31, 2003, at 06:16 AM, 
Makarand.Sonawane@lntinfotech.com wrote:

> Hi,
>
>       I am having rule file as attached while parsing the rule file, I am
> getting the  exception
> java.lang.ExceptionInInitializerError:
> org.apache.commons.digester.xmlrules.XmlLoadException: Error at (3, 142:
> null
>       at
> org.apache.commons.digester.xmlrules.FromXmlRuleSet.addRuleInstances
> (FromXmlRuleSet.java:151)
>       at
> org.apache.commons.digester.Digester.addRuleSet(Digester.java:1663)
>       at
> org.apache.commons.digester.xmlrules.DigesterLoader.createDigester
> (DigesterLoader.java:91)
>       at
> com.marsh.cansys.accounting.utility.lockbox.bankfileparser.utility.RuleReader.
> digestRuleXML(RuleReader.java:64)
>       at
> com.marsh.cansys.accounting.utility.lockbox.bankfileparser.utility.RuleReader.
> <clinit>(RuleReader.java:35)
>       at
> test.junit.AmountNotBalanceTestCase.setUp(AmountNotBalanceTestCase.java:55)
>       at junit.framework.TestCase.runBare(TestCase.java:125)
>       at junit.framework.TestResult$1.protect(TestResult.java:106)
>       at junit.framework.TestResult.runProtected(TestResult.java:124)
>       at junit.framework.TestResult.run(TestResult.java:109)
>       at junit.framework.TestCase.run(TestCase.java:118)
>       at junit.framework.TestSuite.runTest(TestSuite.java:208)
>       at junit.framework.TestSuite.run(TestSuite.java:203)
>       at
> org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests
> (RemoteTestRunner.java:386)
>       at
> org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run
> (RemoteTestRunner.java:270)
>       at
> org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main
> (RemoteTestRunner.java:161)
>
>
> Regards,
> Makarand Sonawane
> Insurance SBU
> L&T Infotech Limited
> Tel - 91-20-5511262 Ext 547
>
>
> (See attached file: LockBoxRules.xml)
>
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