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https://issues.apache.org/jira/browse/GROOVY-10570?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17522880#comment-17522880
]
Eric Milles commented on GROOVY-10570:
--------------------------------------
https://github.com/apache/groovy/pull/1714
Here is how to emulate the serialized data, in case you want to keep moving:
{code:java}
import groovy.transform.*;
import java.lang.annotation.*;
import static java.util.Collections.singletonMap;
@AnnotationCollector(serializeClass=Groovy10570emu.Data.class)
@Target(ElementType.TYPE)
@Retention(RetentionPolicy.SOURCE)
public @interface Groovy10570emu {
class Data {
public static Object[][] value() {
return new Object[][] {{EqualsAndHashCode.class,
singletonMap("useCanEqual", Boolean.FALSE)}};
}
}
}
{code}
If you are passing no attributes to an annotation, you will need to supply an
empty map. There is not much validation in the method that reads the
multi-dimensional array so you may need a bit of trial and error if you are
passing complex values.
> AnnotationCollector produces unspecified errors when used in Java
> -----------------------------------------------------------------
>
> Key: GROOVY-10570
> URL: https://issues.apache.org/jira/browse/GROOVY-10570
> Project: Groovy
> Issue Type: Bug
> Components: Compiler
> Affects Versions: 4.0.1
> Reporter: Christopher Smith
> Priority: Minor
> Time Spent: 10m
> Remaining Estimate: 0h
>
> I have an {{AnnotationCollector}} that refers to some Java classes (type
> converters). The stub generator has an error generating the stub, so I tried
> writing the annotation itself in Java. While this compiled correctly, when
> compiling tests using that annotation I get a BUG! in the Groovy compiler:
> {code}
> BUG! exception in phase 'semantic analysis' in source unit
> '/home/christopher/git/.../IgnoreMetaClassAttributeConverterProviderTest.groovy'
> com.example.DynamoDbRecord.value()
> ...
> Caused by: java.lang.NoSuchMethodException: com.example.DynamoDbRecord.value()
> at java.lang.Class.getMethod (Class.java:2108)
> at
> org.codehaus.groovy.transform.AnnotationCollectorTransform.getTargetListFromClass
> (AnnotationCollectorTransform.java:276)
> at org.codehaus.groovy.transform.AnnotationCollectorTransform.getMeta
> (AnnotationCollectorTransform.java:76)
> at
> org.codehaus.groovy.transform.AnnotationCollectorTransform.getStoredTargetList
> (AnnotationCollectorTransform.java:226)
> at
> org.codehaus.groovy.transform.AnnotationCollectorTransform.getTargetAnnotationList
> (AnnotationCollectorTransform.java:356)
> at org.codehaus.groovy.transform.AnnotationCollectorTransform.visit
> (AnnotationCollectorTransform.java:383)
> at
> org.codehaus.groovy.transform.ASTTransformationCollectorCodeVisitor.findCollectedAnnotations
> (ASTTransformationCollectorCodeVisitor.java:207)
> at
> org.codehaus.groovy.transform.ASTTransformationCollectorCodeVisitor.visitAnnotations
> (ASTTransformationCollectorCodeVisitor.java:93)
> {code}
> Adding a {{String value default ""}} to the annotation produces an NPE.
> It would make sense to me to learn that using {{AnnotationCollector}} in Java
> is unsupported, but the Groovy compiler should probably have a better error
> report.
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