Problem when more than one component has the same implementation.composite and
that this composite has exposed references
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Key: TUSCANY-2982
URL: https://issues.apache.org/jira/browse/TUSCANY-2982
Project: Tuscany
Issue Type: Bug
Components: Java SCA Assembly Model
Affects Versions: Java-SCA-1.4
Environment: Linux / JavaSE-1.6
Reporter: Julien Bigot
When in a hierarchy of instantiated components, two components (even not at the
same level of the hierarchy) have the same implementation.composite and that
the referenced composite has a reference promoting one (or more) reference of
its internal components, connecting these composite references leads to a
NullPointerException.
For example:
A.componentType
|-> reference refA
|-> service servA
B.composite
|-> component a: A
|-> reference refB = a/refA
C.composite
|-> component b: B
|-> reference refC = b/refB
D.composite
|-> component a: A
|-> component b: B
|-> component c: C
|-> wire a/servA <-> b/refB
|-> wire a/servA <-> c/refC
instantiation of D leads to the following hierarchy
D/
|->a
|->b/
|->a
|->c/
|->b/
|->a
There are two instances of B (D/b & D/c/b) and these two instances have a
reference (refB) promoting a reference of an internal component (a/refA), this
results in the following NullPointerException :
java.lang.NullPointerException
at
org.apache.tuscany.sca.interfacedef.impl.InterfaceContractMapperImpl.checkCompatibility(InterfaceContractMapperImpl.java:155)
at
org.apache.tuscany.sca.interfacedef.impl.InterfaceContractMapperImpl.isCompatible(InterfaceContractMapperImpl.java:271)
at
org.apache.tuscany.sca.assembly.builder.impl.BaseWireBuilderImpl.connectWires(BaseWireBuilderImpl.java:940)
at
org.apache.tuscany.sca.assembly.builder.impl.BaseWireBuilderImpl.wireComponentReferences(BaseWireBuilderImpl.java:112)
from my initial investigations, this seems somehow related to the fact that
when cloned, CompositeReferenceImpl's do not clone their promotedReferences
attribute, but rather copy it. I didn't manage to get further however.
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