For now I specified the target service in the SCDL. I think we should
keep it like that in the sample as picking the default service in a
composite is fragile and not really best practice. I'll work on
getting rid of the NPE in a bit as it is a fairly simple fix.
Jim
On Jan 2, 2007, at 10:45 AM, Jim Marino wrote:
Yes that's right. I'll fix it in a bit.
Jim
On Jan 2, 2007, at 10:30 AM, Raymond Feng wrote:
Hi,
I ran into a NPE with the latest code in the InnerComposite
sample. Please see the stack trace below.
java.lang.NullPointerException
at java.util.concurrent.ConcurrentHashMap.hash
(ConcurrentHashMap.java:172)
at java.util.concurrent.ConcurrentHashMap.get
(ConcurrentHashMap.java:745)
at
org.apache.tuscany.spi.extension.CompositeComponentExtension.getServi
ce(CompositeComponentExtension.java:252)
at org.apache.tuscany.core.builder.ConnectorImpl.connect
(ConnectorImpl.java:616)
at org.apache.tuscany.core.builder.ConnectorImpl.connect
(ConnectorImpl.java:503)
at org.apache.tuscany.core.builder.ConnectorImpl.handleReference
(ConnectorImpl.java:430)
at org.apache.tuscany.core.builder.ConnectorImpl.connect
(ConnectorImpl.java:90)
at
org.apache.tuscany.spi.extension.CompositeComponentExtension.prepare(
CompositeComponentExtension.java:368)
at
org.apache.tuscany.spi.extension.CompositeComponentExtension.prepare(
CompositeComponentExtension.java:370)
at org.apache.tuscany.core.deployer.DeployerImpl.deploy
(DeployerImpl.java:98)
at org.apache.tuscany.core.launcher.LauncherImpl.bootApplication
(LauncherImpl.java:213)
at org.apache.tuscany.test.SCATestCase.setUp(SCATestCase.java:88)
at innercomposite.InnerCompositeTestCase.setUp
(InnerCompositeTestCase.java:31)
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.junit3.JUnit3TestReference.run(
JUnit3TestReference.java:128)
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)
In this case, the qualified name for the target is the component
name and the portName is null and a NPE is thrown.
The SCA spec defines the following syntax for wire-target-URI:
<component-name>/<service-name>
o where the target is a service of a component. The specification
of the service name is optional if the target component only has
one service with a compatible interface
If service-name is not present (portName==null), we should check
and pick the only one service. Am I right?
Thanks,
Raymond
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