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From "James Baldassari (Created) (JIRA)" <j...@apache.org>
Subject [jira] [Created] (AVRO-1020) Builder API fails to substitute default values for enum types
Date Tue, 07 Feb 2012 06:50:59 GMT
Builder API fails to substitute default values for enum types
-------------------------------------------------------------

                 Key: AVRO-1020
                 URL: https://issues.apache.org/jira/browse/AVRO-1020
             Project: Avro
          Issue Type: Bug
          Components: java
    Affects Versions: 1.6.1
            Reporter: James Baldassari


If a schema has an enum type with a default value, and the Builder API is used to automatically
substitute the default value on build(), a ClassCastException is thrown.  The reason is that
the default value resolves to a GenericData.EnumSymbol.  The specific builder then attempts
to cast this value to the corresponding Java enum type, which fails.  Here is an example stack
trace:

{noformat}
org.apache.avro.AvroRuntimeException: java.lang.ClassCastException: org.apache.avro.generic.GenericData$EnumSymbol
cannot be cast to org.apache.avro.ipc.specific.PrivacyType
	at org.apache.avro.ipc.specific.Person$Builder.build(Person.java:410)
	at org.apache.avro.specific.TestSpecificRecordBuilder.testSpecificBuilder(TestSpecificRecordBuilder.java:51)
Caused by: java.lang.ClassCastException: org.apache.avro.generic.GenericData$EnumSymbol cannot
be cast to org.apache.avro.ipc.specific.PrivacyType
	at org.apache.avro.ipc.specific.Person$Builder.build(Person.java:407)
	... 24 more
{noformat}


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