org.postgresql.jdbc
Class PgStatement.StatementResultHandler

java.lang.Object
  org.postgresql.jdbc.PgStatement.StatementResultHandler

All Implemented Interfaces:

ResultHandler

Enclosing class:

PgStatement

public class PgStatement.StatementResultHandler
extends Object
implements ResultHandler

ResultHandler implementations for updates, queries, and either-or.

Constructor Summary

PgStatement.StatementResultHandler()

Method Summary

void	handleCommandStatus(String status, int updateCount, long insertOID) Called when a query that did not return a resultset completes.
void	handleCompletion() Called before a QueryExecutor method returns.
void	handleError(SQLException newError) Called when an error occurs.
void	handleResultRows(Query fromQuery, Field[] fields, List<byte[][]> tuples, ResultCursor cursor) Called when result rows are received from a query.
void	handleWarning(SQLWarning warning) Called when a warning is emitted.

Methods inherited from class java.lang.Object

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

Constructor Detail

PgStatement.StatementResultHandler

public PgStatement.StatementResultHandler()

Method Detail

handleResultRows

public void handleResultRows(Query fromQuery,
                             Field[] fields,
                             List<byte[][]> tuples,
                             ResultCursor cursor)

Description copied from interface: ResultHandler

Called when result rows are received from a query.

Specified by:

handleResultRows in interface ResultHandler

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

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

handleCommandStatus

public void handleCommandStatus(String status,
                                int 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

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.

handleWarning

public void handleWarning(SQLWarning warning)

Description copied from interface: ResultHandler

Called when a warning is emitted.

Specified by:

handleWarning in interface ResultHandler

Parameters:

warning - the warning that occurred.

handleError

public void handleError(SQLException newError)

Description copied from interface: ResultHandler

Called when an error occurs. Subsequent queries are abandoned; in general the only calls between a handleError call and a subsequent handleCompletion call are handleError or handleWarning.

Specified by:

handleError in interface ResultHandler

Parameters:

newError - the error that occurred

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

Throws:

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