Ji Liu created ARROW-6083:
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Summary: [Java] Refactor Jdbc adapter consume logic
Key: ARROW-6083
URL: https://issues.apache.org/jira/browse/ARROW-6083
Project: Apache Arrow
Issue Type: Improvement
Reporter: Ji Liu
Assignee: Ji Liu
Jdbc adapter read from {{ResultSet}} looks like:
while (rs.next()) {
for (int i = 1; i <= columnCount; i++) {
jdbcToFieldVector(
rs,
i,
rs.getMetaData().getColumnType(i),
rowCount,
root.getVector(rsmd.getColumnName(i)),
config);
}
rowCount++;
}
And in {{jdbcToFieldVector}} has lots of switch-case, that is to see, for every
single value from ResultSet we have to do lots of analyzing conditions.
I think we could optimize this using consumer/delegate like avro adapter.
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