Enhancer java.lang.StackOverflowError exception when circular dependencies are
encountered within embeddables
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Key: OPENJPA-1038
URL: https://issues.apache.org/jira/browse/OPENJPA-1038
Project: OpenJPA
Issue Type: Improvement
Affects Versions: 2.0.0
Reporter: Tim McConnell
Circular dependencies among embeddable are not allowed. When they are
encountered by the Enhancer it gets in an infinite loop causing a stack
overflow exception as shown below. It seems there should be a more graceful
detection of this scenario and a more useful explanation and/or description of
the error. The failure is the same for both annotated and XML versions of the
entities/embeddables.
[jpa.fvt/jpafvt.setup/echo] [exec] 1016 EmbeddableNested_JSE TRACE
[main] openjpa.MetaData - Resolving field
"suite.r80.base.embeddable.nested.entities.xmlembeddable...@969030082.xmlembeddable03a".
[jpa.fvt/jpafvt.setup/echo] [exec] 1016 EmbeddableNested_JSE TRACE
[main] openjpa.MetaData - Generating default metadata for type
"suite.r80.base.embeddable.nested.entities.XMLEmbeddable03a".
[jpa.fvt/jpafvt.setup/echo] [exec] 1016 EmbeddableNested_JSE TRACE
[main] openjpa.MetaData - Using reflection for metadata generation.
[jpa.fvt/jpafvt.setup/echo] [exec] 1016 EmbeddableNested_JSE TRACE
[main] openjpa.MetaData - Resolving embedded metadata for
"suite.r80.base.embeddable.nested.entities.xmlembeddable...@961886549".
[jpa.fvt/jpafvt.setup/echo] [exec] Exception in thread "main"
java.lang.StackOverflowError
[jpa.fvt/jpafvt.setup/echo] [exec] at
sun.nio.cs.SingleByteEncoder.encodeArrayLoop(SingleByteEncoder.java:76)
[jpa.fvt/jpafvt.setup/echo] [exec] at
sun.nio.cs.SingleByteEncoder.encodeLoop(SingleByteEncoder.java:152)
[jpa.fvt/jpafvt.setup/echo] [exec] at
java.nio.charset.CharsetEncoder.encode(CharsetEncoder.java:556)
[jpa.fvt/jpafvt.setup/echo] [exec] at
sun.nio.cs.StreamEncoder$CharsetSE.implWrite(StreamEncoder.java:405)
[jpa.fvt/jpafvt.setup/echo] [exec] at
sun.nio.cs.StreamEncoder.write(StreamEncoder.java:159)
[jpa.fvt/jpafvt.setup/echo] [exec] at
java.io.OutputStreamWriter.write(OutputStreamWriter.java:229)
[jpa.fvt/jpafvt.setup/echo] [exec] at
java.io.BufferedWriter.flushBuffer(BufferedWriter.java:122)
[jpa.fvt/jpafvt.setup/echo] [exec] at
java.io.PrintStream.write(PrintStream.java:489)
[jpa.fvt/jpafvt.setup/echo] [exec] at
java.io.PrintStream.print(PrintStream.java:632)
[jpa.fvt/jpafvt.setup/echo] [exec] at
com.ibm.jvm.io.ConsolePrintStream.print(ConsolePrintStream.java:259)
[jpa.fvt/jpafvt.setup/echo] [exec] at
org.apache.openjpa.lib.log.LogFactoryImpl$LogImpl.log(LogFactoryImpl.java:306)
[jpa.fvt/jpafvt.setup/echo] [exec] at
org.apache.openjpa.lib.log.AbstractLog.trace(AbstractLog.java:72)
[jpa.fvt/jpafvt.setup/echo] [exec] at
org.apache.openjpa.lib.log.AbstractLog.trace(AbstractLog.java:67)
[jpa.fvt/jpafvt.setup/echo] [exec] at
org.apache.openjpa.meta.ClassMetaData.resolveMeta(ClassMetaData.java:1649)
[jpa.fvt/jpafvt.setup/echo] [exec] at
org.apache.openjpa.meta.ClassMetaData.resolve(ClassMetaData.java:1628)
[jpa.fvt/jpafvt.setup/echo] [exec] at
org.apache.openjpa.meta.ValueMetaDataImpl.resolve(ValueMetaDataImpl.java:417)
[jpa.fvt/jpafvt.setup/echo] [exec] at
org.apache.openjpa.meta.FieldMetaData.resolve(FieldMetaData.java:1702)
[jpa.fvt/jpafvt.setup/echo] [exec] at
org.apache.openjpa.meta.ClassMetaData.resolveMeta(ClassMetaData.java:1693)
[jpa.fvt/jpafvt.setup/echo] [exec] at
org.apache.openjpa.meta.ClassMetaData.resolve(ClassMetaData.java:1628)
[jpa.fvt/jpafvt.setup/echo] [exec] at
org.apache.openjpa.meta.ValueMetaDataImpl.resolve(ValueMetaDataImpl.java:417)
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