Hello group,
I am new to JiBX and I have a set of given schemas and a given domain model. I
am writing binding files by hand. I am running into the situation that I have
an interface I with two implementations, class B and class C. The bindings for
B and C need to be abstract, because they are types. Imagine class A that has
multiple fields of type I. I have created the following binding file:
<binding>
<mapping abstract="true" class="my.pack.I" />
<mapping abstract="true" class="my.pack.B" extends="my.pack.I">
<value name="LdapName" field="s1" />
</mapping>
<mapping abstract="true" class="my.pack.C" extends="my.pack.I">
<value name="IdentPart1" field="s2" />
<value name="IdentPart2" field="s3" />
</mapping>
<mapping name="Aaaa" class="my.pack.A">
<structure name="Identifier1" get-method="getOne" set-method="setOne" />
<structure name="Identifier2" get-method="getTwo" set-method="setTwo"
usage="optional"/>
</mapping>
</binding>
but compiling the binding into the Java classes first results in the following
warning for mapping of class B and C:
> Warning: Only concrete mappings should be 'leaf' mappings for extensions; you
> should either remove 'extends' attribute or add concrete extension mappings
> for this abstract mapping;
followed by the following error for each structure mapping in class A:
> Error: name attribute not allowed on reference to mapping with extensions;
When I change the above binding file and remove the mapping of I and the
'extends'-attribute on the mapping of classes B and C, then the binding gets
compiled without errors, but when I want to unmarshall an xml file, I get the
following exception:
org.jibx.runtime.JiBXException: Cannot create instance of interface or abstract
class my.pack.I
at
my.pack.JiBX_binding_AInterfaceMungeAdapter.JiBX_binding_multiple_I_newinstance_1_0()
at my.pack.A.JiBX_binding_multiple_I_unmarshal_1_0(A.java)
at my.pack.JiBX_binding_multiple_IA_access.unmarshal()
at
org.jibx.runtime.impl.UnmarshallingContext.unmarshalElement(UnmarshallingContext.java:2757)
at
org.jibx.runtime.impl.UnmarshallingContext.unmarshalDocument(UnmarshallingContext.java:2900)
at
my.pack.ADatabindingTest.testUnmarshallAInterface(ADatabindingTest.java:24)
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.InvokeMethod.evaluate(InvokeMethod.java:20)
at
org.junit.runners.BlockJUnit4ClassRunner.runNotIgnored(BlockJUnit4ClassRunner.java:79)
at
org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:71)
at
org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:49)
at org.junit.runners.ParentRunner$3.run(ParentRunner.java:193)
at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:52)
at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:191)
at org.junit.runners.ParentRunner.access$000(ParentRunner.java:42)
at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:184)
at org.junit.runners.ParentRunner.run(ParentRunner.java:236)
at
org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:50)
at
org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)
at
org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:467)
at
org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:683)
at
org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:390)
at
org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:197)
How can I solve this situation? Can my use case be implemented using standard
JiBX mappings, or should I use a custom IUnmarshaller or something else to
solve this problem?
Thanks in advance,
Dave
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