NullPointerException thrown when using Atom binding on a Java component
implementation class that does not have a get() method
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Key: TUSCANY-3109
URL: https://issues.apache.org/jira/browse/TUSCANY-3109
Project: Tuscany
Issue Type: Bug
Components: Java SCA ATOM Binding Extension
Affects Versions: Java-SCA-1.5
Environment: SVN revision 786908
Linux
Reporter: Mark Combellack
Assignee: Mark Combellack
Fix For: Java-SCA-1.5.1
The Atom binding can support two types of Java implementation classes that
* extend org.apache.tuscany.sca.binding.atom.collection.Collection
* Do not extend org.apache.tuscany.sca.binding.atom.collection.Collection
but have a getAll() method that uses the Tuscany Data API
The support for this is provided in the getFeed() method of
AtomBindingListenerServlet in the binding-atom-abdera module. With SVN revision
763787, if you look at line 745 [1] there is an if that handles these two cases.
Unfortunately, currently if you attempt to add an Atom binding to a Java
component implementation that does not have a get() method then the following
NullPointerException is thrown:
org.osoa.sca.ServiceRuntimeException: java.lang.NullPointerException
at
org.apache.tuscany.sca.host.embedded.SCADomain.createNewInstance(SCADomain.java:220)
at
org.apache.tuscany.sca.host.embedded.SCADomain.newInstance(SCADomain.java:63)
at
org.apache.tuscany.sca.binding.atom.AtomFeedNonCollectionTest.init(AtomFeedNonCollectionTest.java:25)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at
org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:44)
at
org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:15)
at
org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:41)
at
org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:27)
at
org.junit.internal.runners.statements.RunAfters.evaluate(RunAfters.java:31)
at org.junit.runners.ParentRunner.run(ParentRunner.java:220)
at
org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:45)
at
org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)
at
org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:460)
at
org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:673)
at
org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:386)
at
org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:196)
Caused by: java.lang.NullPointerException
at
org.apache.tuscany.sca.binding.atom.provider.AtomBindingListenerServlet.<init>(AtomBindingListenerServlet.java:146)
at
org.apache.tuscany.sca.binding.atom.provider.AtomServiceBindingProvider.start(AtomServiceBindingProvider.java:73)
at
org.apache.tuscany.sca.core.assembly.CompositeActivatorImpl$3.run(CompositeActivatorImpl.java:630)
at java.security.AccessController.doPrivileged(Native Method)
at
org.apache.tuscany.sca.core.assembly.CompositeActivatorImpl.start(CompositeActivatorImpl.java:628)
at
org.apache.tuscany.sca.core.assembly.CompositeActivatorImpl.start(CompositeActivatorImpl.java:560)
at org.apache.tuscany.sca.node.impl.NodeImpl.start(NodeImpl.java:716)
at
org.apache.tuscany.sca.host.embedded.impl.DefaultSCADomain.init(DefaultSCADomain.java:187)
at
org.apache.tuscany.sca.host.embedded.impl.DefaultSCADomain.<init>(DefaultSCADomain.java:100)
at
org.apache.tuscany.sca.host.embedded.SCADomain.createNewInstance(SCADomain.java:183)
... 18 more
[1]
http://svn.apache.org/viewvc/tuscany/branches/sca-java-1.x/modules/binding-atom-abdera/src/main/java/org/apache/tuscany/sca/binding/atom/provider/AtomBindingListenerServlet.java?annotate=763787&sortby=date&pathrev=763787#l475
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