com.amazon.redshift.jdbc

Class RedshiftResultSet.CursorResultHandler

java.lang.Object

com.amazon.redshift.core.ResultHandlerBase

com.amazon.redshift.jdbc.RedshiftResultSet.CursorResultHandler

All Implemented Interfaces:

ResultHandler

Enclosing class:

RedshiftResultSet

public class RedshiftResultSet.CursorResultHandler
extends ResultHandlerBase

Constructor Summary

Constructors

Constructor and Description
CursorResultHandler()
CursorResultHandler(int resultsettype)

Method Summary

Modifier and Type	Method and Description
void	handleCommandStatus(String status, long updateCount, long insertOID) Called when a query that did not return a resultset completes.
void	handleCompletion() Called before a QueryExecutor method returns.
void	handleResultRows(Query fromQuery, Field[] fields, List<Tuple> tuples, ResultCursor cursor, RedshiftRowsBlockingQueue<Tuple> queueTuples, int[] rowCount, Thread ringBufferThread) Called when result rows are received from a query.
boolean	wantsScrollableResultSet() Check the statement type

Methods inherited from class com.amazon.redshift.core.ResultHandlerBase

getException, getWarning, handleError, handleWarning, secureProgress, setStatementStateIdleFromInQuery, setStatementStateInQueryFromIdle

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

CursorResultHandler

public CursorResultHandler()

CursorResultHandler

public CursorResultHandler(int resultsettype)

Method Detail

handleResultRows

public void handleResultRows(Query fromQuery,
                             Field[] fields,
                             List<Tuple> tuples,
                             ResultCursor cursor,
                             RedshiftRowsBlockingQueue<Tuple> queueTuples,
                             int[] rowCount,
                             Thread ringBufferThread)

Description copied from interface: ResultHandler

Called when result rows are received from a query.

Specified by:

handleResultRows in interface ResultHandler

Overrides:

handleResultRows in class ResultHandlerBase

Parameters:

fromQuery - the underlying query that generated these results; this may not be very specific (e.g. it may be a query that includes multiple statements).

fields - column metadata for the resultset; might be null if Query.QUERY_NO_METADATA was specified.

tuples - the actual data. If this is set then queueTuples will be null.

cursor - a cursor to use to fetch additional data; null if no further results are present.

queueTuples - the actual data in a blocking queue. If this is set then tuples will be null.

rowCount - number of rows fetched from the socket.

ringBufferThread - a thread to fetch rows in the limited rows buffer.

handleCommandStatus

public void handleCommandStatus(String status,
                                long updateCount,
                                long insertOID)

Description copied from interface: ResultHandler

Called when a query that did not return a resultset completes.

Specified by:

handleCommandStatus in interface ResultHandler

Overrides:

handleCommandStatus in class ResultHandlerBase

Parameters:

status - the command status string (e.g. "SELECT") returned by the backend

updateCount - the number of rows affected by an INSERT, UPDATE, DELETE, FETCH, or MOVE command; -1 if not available.

insertOID - for a single-row INSERT query, the OID of the newly inserted row; 0 if not available.

handleCompletion

public void handleCompletion()
                      throws SQLException

Description copied from interface: ResultHandler

Called before a QueryExecutor method returns. This method may throw a SQLException if desired; if it does, the QueryExecutor method will propagate that exception to the original caller.

Specified by:

handleCompletion in interface ResultHandler

Overrides:

handleCompletion in class ResultHandlerBase

Throws:

SQLException - if the handler wishes the original method to throw an exception.

wantsScrollableResultSet

public boolean wantsScrollableResultSet()

Description copied from interface: ResultHandler

Check the statement type

Specified by:

wantsScrollableResultSet in interface ResultHandler

Overrides:

wantsScrollableResultSet in class ResultHandlerBase

Returns:

true if scrollable, false for forward only.