Github user vkorukanti commented on a diff in the pull request: https://github.com/apache/drill/pull/530#discussion_r73944757 --- Diff: exec/java-exec/src/main/java/org/apache/drill/exec/client/DrillClient.java --- @@ -512,6 +526,61 @@ public void runQuery(QueryType type, List<PlanFragment> planFragments, UserResul } /** + * Create a prepared statement for given <code>query</code>. + * + * @param query + * @return + */ + public DrillRpcFuture<CreatePreparedStatementResp> createPreparedStatement(final String query) { + final CreatePreparedStatementReq req = + CreatePreparedStatementReq.newBuilder() + .setSqlQuery(query) + .build(); + + return client.send(RpcType.CREATE_PREPARED_STATEMENT, req, CreatePreparedStatementResp.class); + } + + /** + * Execute the given prepared statement. + * + * @param preparedStatementHandle Prepared statement handle returned in response to + * {@link #createPreparedStatement(String)}. + * @param resultsListener {@link UserResultsListener} instance for listening for query results. + */ + public void executePreparedStatement(final PreparedStatementHandle preparedStatementHandle, + final UserResultsListener resultsListener) { + final RunQuery runQuery = newBuilder() + .setResultsMode(STREAM_FULL) + .setType(QueryType.PREPARED_STATEMENT) + .setPreparedStatementHandle(preparedStatementHandle) + .build(); + client.submitQuery(resultsListener, runQuery); + } + + /** + * Execute the given prepared statement and return the results. + * + * @param preparedStatementHandle Prepared statement handle returned in response to + * {@link #createPreparedStatement(String)}. + * @return List of {@link QueryDataBatch}s. It is responsibility of the caller to release query data batches. + * @throws RpcException + */ + public List<QueryDataBatch> executePreparedStatement(final PreparedStatementHandle preparedStatementHandle) --- End diff -- done
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