Equals() on SpecificRecord fails (java)
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Key: AVRO-336
URL: https://issues.apache.org/jira/browse/AVRO-336
Project: Avro
Issue Type: Bug
Components: java
Affects Versions: 1.3.0
Reporter: Scott Carey
Fix For: 1.3.0
rev 899520, trunk.
Calling equals() on an object generated by the SpecificAPI fails.
The object is a record with several fields, one is an array. This object can
serialize and deserialize, binary and json. But equals() fails, as well as
hashCode() in some cases.
It fails in Schema.java, line 217.
{code}
/** If this is an array, returns its element type. */
public Schema getElementType() {
throw new AvroRuntimeException("Not an array: "+this);
}
{code}
This looks unimplemented.
The stack trace is:
{noformat}
Exception in thread "main" org.apache.avro.AvroRuntimeException: Not an array:
{"type":"record","name":"Variable","namespace":"com.rr.avro","fields":[{"name":"variableId","type":"int"},{"name":"selectedValue","type":"string"}]}
at org.apache.avro.Schema.getElementType(Schema.java:217)
at org.apache.avro.generic.GenericData.compare(GenericData.java:468)
at org.apache.avro.specific.SpecificData.compare(SpecificData.java:250)
at org.apache.avro.specific.SpecificData.compare(SpecificData.java:242)
at
org.apache.avro.specific.SpecificRecordBase.compareTo(SpecificRecordBase.java:45)
at
org.apache.avro.specific.SpecificRecordBase.equals(SpecificRecordBase.java:35)
{noformat}
That record is the element type of the array, so I think this is just due to
the implementation being incomplete.
The specific compiler could also generate equals() methods (which would be more
efficient than traversing the schema). I wonder if eclipse's "generate
hashcode and equals" code is usable.
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