OpenSAML user discussion

[Chad La Joie <>]

You'll need to inspect the loaded builders.  There is no way to tell 
what is happening from the code you have here.  In general though it's 
best to look up the builders by their Schema type QName, not the element 
QName.  In theory they should return the same result, but there could be 
a typo in a config file that no one has caught yet.

Chandra Tondepu wrote:
> The webapplication running on tomcat 6 is not able to load and create object
> for SignatureBuilder.  I have loaded all the .xml files through
> Configuration into the Parser, but for some reason it is not picking up
> SingatureBuilder though it is picking up SubjectBuilder, IssuerBuilder,
> EnvelopeBuilder etc.,??  Why SignatureBuilder so special??
>
>
> SignatureBuilder signaturebuilder =
> ((SignatureBuilder)builderFactory.getBuilder(Signature.DEFAULT_ELEMENT_NAME));
> System.out.println("Classname:" + builderFactory.getClass().getName());
> System.out.println("SignatureBuilder"+signaturebuilder);
> signature123 = (Signature)
> ((XMLObjectBuilder)builderFactory.getBuilder(Signature.DEFAULT_ELEMENT_NAME)).buildObject(Signature.DEFAULT_ELEMENT_NAME);
>
>
> java.lang.NullPointerException
> at
> com.cst.saml2.attrqry.SignAttributeQuery.<init>(SignAttributeQuery.java:122)
> at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
> at sun.reflect.NativeConstructorAccessorImpl.newInstance(Unknown Source)
> at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown Source)
> at java.lang.reflect.Constructor.newInstance(Unknown Source)
> at java.lang.Class.newInstance0(Unknown Source)
> at java.lang.Class.newInstance(Unknown Source)
> at
> org.apache.catalina.core.StandardWrapper.loadServlet(StandardWrapper.java:1104)
> at
> org.apache.catalina.core.StandardWrapper.allocate(StandardWrapper.java:806)
> at
> org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:133)
> at
> org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:175)
> at
> org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:128)
> at
> org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:104)
> at
> org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
> at
> org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:216)
> at
> org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:844)
> at
> org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:634)
> at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:445)
> at java.lang.Thread.run(Unknown Source)

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Chad La Joie, Software Engineer, Net Services
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 http://www.switch.ch