Viraj Jasani created PHOENIX-7462:
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Summary: Single row Atomic Upsert/Delete returning result should
return ResultSet
Key: PHOENIX-7462
URL: https://issues.apache.org/jira/browse/PHOENIX-7462
Project: Phoenix
Issue Type: Improvement
Reporter: Viraj Jasani
PHOENIX-7398 introduces new PhoenixStatement API to return row for
Atomic/Conditional Upserts. Phoenix already supports Upserts as Atomic
operation by using ON DUPLICATE KEY clause.
Similarly, PHOENIX-7411 and PHOENIX-7434 introduce Atomic Delete support for
the single row deletion. It returns result (row) back to the client (using new
API) only if the given client initiated Delete operation deleted the row when
the row was alive. In the context of atomicity, this means that the delete
operation is already idempotent and will continue to be idempotent, however the
client that was able to successfully delete the row by taking lock on the live
row (row without delete marker) is expected to be the only client that can
retrieve the old row result back.
The purpose of this Jira is to update the API signature for the
PhoenixStatement API such that the abstract level ResultSet object can be
returned for the returned row instead of Tuple object.
*Old API signature:*
{code:java}
/**
* Executes the given SQL statement similar to JDBC API executeUpdate() but
also returns the
* updated or non-updated row as Result object back to the client. This must be
used with
* auto-commit Connection. This makes the operation atomic.
* If the row is successfully updated, return the updated row, otherwise if the
row
* cannot be updated, return non-updated row.
*
* @param sql The SQL DML statement, UPSERT or DELETE for Phoenix.
* @return The pair of int and Tuple, where int represents value 1 for
successful row
* update and 0 for non-successful row update, and Tuple represents the state
of the row.
* @throws SQLException If the statement cannot be executed.
*/
public Pair<Integer, Tuple> executeUpdateReturnRow(String sql) throws
SQLException {{code}
*New API signature:*
{code:java}
/**
* Executes the given SQL statement similar to JDBC API executeUpdate() but
also returns the
* updated or non-updated row as ResultSet object back to the client. This must
be used with
* auto-commit Connection. This makes the operation atomic.
* If the row is successfully updated, return the updated row, otherwise if the
row
* cannot be updated, return non-updated row.
*
* @param sql The SQL DML statement, UPSERT or DELETE for Phoenix.
* @return The map entry pair of int and ResultSet, where int represents value
1 for successful row
* update and 0 for non-successful row update, and ResultSet represents the
state of the row.
* @throws SQLException If the statement cannot be executed.
*/
public Map.Entry<Integer, ResultSet> executeAtomicUpdateReturnRow(String sql)
throws SQLException { {code}
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