DRILL-3347: VARCHAR ResultSet.getObject returned ...hadoop.io.Text, not String.
this closes #144
Core fix:
- Fixed {,Nullable}VarCharAccessor's getObject() to return String instead of
value vector's internal org.apache.hadoop.io.Text.
- Updated unit tests (to expect only String now).
[DatabaseMetaDataGetColumnsTest, ResultSetMetaDataTest]
Also Added getObject check in tracing proxy test. [TracingProxyDriverTest]
Changed hard references to Hadoop's Text and JodaTime's Period to strings in
warning check in tracing proxy. [InvocationReporterImpl]
Cleanup:
- Added @Override annotations. [SqlAccessors]
- (Unintentionally) fixed (undetected) missing comma. [ValueVectorTypes.tdd]
