OpenSAML user discussion

[Chandra Tondepu <>]

Yes I did lookup by QName.  Infact I tried to load the SignatureBuilder explicitly.  However I could resolve this by explicitly registering the Builder rather than loading through the XML file.

This particular piece of code has resolved the issue::

Configuration.registerObjectProvider(Signature.DEFAULT_ELEMENT_NAME, new SignatureBuilder(), new SignatureMarshaller(), new SignatureUnmarshaller());

Chad - Thank you for taking time to explain.

On Thu, Jan 14, 2010 at 1:40 PM, Chad La Joie <> wrote:

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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