nl.cwi.monetdb.jdbc

Class MonetStatement

java.lang.Object

nl.cwi.monetdb.jdbc.MonetWrapper

nl.cwi.monetdb.jdbc.MonetStatement

All Implemented Interfaces:

AutoCloseable, Statement, Wrapper

Direct Known Subclasses:

MonetPreparedStatement

public class MonetStatement
extends MonetWrapper
implements Statement

A Statement suitable for the MonetDB database. The object used for executing a static SQL statement and returning the results it produces.
By default, only one ResultSet object per Statement object can be open at the same time. Therefore, if the reading of one ResultSet object is interleaved with the reading of another, each must have been generated by different Statement objects. All execution methods in the Statement interface implicitly close a Statement's current ResultSet object if an open one exists. The current state of this Statement is that it only implements the executeQuery() which returns a ResultSet where from results can be read and executeUpdate() which doesn't return the affected rows. Commit and rollback are implemented, as is the autoCommit mechanism which relies on server side auto commit.
Multi-result queries are supported using the getMoreResults() method.

Version:

0.7

Author:

Martin van Dinther

Field Summary

Fields

Modifier and Type	Field and Description
protected boolean	closed Whether this Statement object is closed or not

Fields inherited from interface java.sql.Statement

CLOSE_ALL_RESULTS, CLOSE_CURRENT_RESULT, EXECUTE_FAILED, KEEP_CURRENT_RESULT, NO_GENERATED_KEYS, RETURN_GENERATED_KEYS, SUCCESS_NO_INFO

Method Summary

Modifier and Type	Method and Description
void	addBatch(String sql) Adds the given SQL command to the current list of commands for this Statement object.
void	cancel() Cancels this Statement object if both the DBMS and driver support aborting an SQL statement.
void	clearBatch() Empties this Statement object's current list of SQL commands.
void	clearWarnings() Clears all warnings reported for this Statement object.
void	close() Releases this Statement object's database and JDBC resources immediately instead of waiting for this to happen when it is automatically closed.
void	closeOnCompletion() Specifies that this Statement will be closed when all its dependent result sets are closed.
boolean	execute(String sql) Executes the given SQL statement, which may return multiple results.
boolean	execute(String sql, int autoGeneratedKeys) Executes the given SQL statement, which may return multiple results, and signals the driver that any auto-generated keys should be made available for retrieval.
boolean	execute(String sql, int[] columnIndexes) Executes the given SQL statement, which may return multiple results, and signals the driver that the auto-generated keys indicated in the given array should be made available for retrieval.
boolean	execute(String sql, String[] columnNames) Executes the given SQL statement, which may return multiple results, and signals the driver that the auto-generated keys indicated in the given array should be made available for retrieval.
int[]	executeBatch() Submits a batch of commands to the database for execution and if all commands execute successfully, returns an array of update counts.
ResultSet	executeQuery(String sql) Executes the given SQL statement, which returns a single ResultSet object.
int	executeUpdate(String sql) Executes the given SQL statement, which may be an INSERT, UPDATE, or DELETE statement or an SQL statement that returns nothing, such as an SQL DDL statement.
int	executeUpdate(String sql, int autoGeneratedKeys) Executes the given SQL statement and signals the driver with the given flag about whether the auto-generated keys produced by this Statement object should be made available for retrieval.
int	executeUpdate(String sql, int[] columnIndexes) Executes the given SQL statement and signals the driver that the auto-generated keys indicated in the given array should be made available for retrieval.
int	executeUpdate(String sql, String[] columnNames) Executes the given SQL statement and signals the driver that the auto-generated keys indicated in the given array should be made available for retrieval.
Connection	getConnection() Retrieves the Connection object that produced this Statement object.
int	getFetchDirection() Retrieves the direction for fetching rows from database tables that is the default for result sets generated from this Statement object.
int	getFetchSize() Retrieves the number of result set rows that is the default fetch size for ResultSet objects generated from this Statement object.
ResultSet	getGeneratedKeys() Retrieves any auto-generated keys created as a result of executing this Statement object.
int	getMaxFieldSize() Retrieves the maximum number of bytes that can be returned for character and binary column values in a ResultSet object produced by this Statement object.
int	getMaxRows() Retrieves the maximum number of rows that a ResultSet object produced by this Statement object can contain.
boolean	getMoreResults() Moves to this Statement object's next result, returns true if it is a ResultSet object, and implicitly closes any current ResultSet object(s) obtained with the method getResultSet.
boolean	getMoreResults(int current) Moves to this Statement object's next result, deals with any current ResultSet object(s) according to the instructions specified by the given flag, and returns true if the next result is a ResultSet object.
int	getQueryTimeout() Retrieves the number of seconds the driver will wait for a Statement object to execute.
ResultSet	getResultSet() Retrieves the current result as a ResultSet object.
int	getResultSetConcurrency() Retrieves the result set concurrency for ResultSet objects generated by this Statement object.
int	getResultSetHoldability() Retrieves the result set holdability for ResultSet objects generated by this Statement object.
int	getResultSetType() Retrieves the result set type for ResultSet objects generated by this Statement object.
int	getUpdateCount() Retrieves the current result as an update count; if the result is a ResultSet object or there are no more results, -1 is returned.
SQLWarning	getWarnings() Retrieves the first warning reported by calls on this Statement object.
boolean	isClosed() Retrieves whether this Statement object has been closed.
boolean	isCloseOnCompletion() Returns a value indicating whether this Statement will be closed when all its dependent result sets are closed.
boolean	isPoolable() Returns a value indicating whether the Statement is poolable or not.
void	setCursorName(String name) Sets the SQL cursor name to the given String, which will be used by subsequent Statement object execute methods.
void	setEscapeProcessing(boolean enable) Sets escape processing on or off.
void	setFetchDirection(int direction) Gives the driver a hint as to the direction in which rows will be processed in ResultSet objects created using this Statement object.
void	setFetchSize(int rows) Gives the JDBC driver a hint as to the number of rows that should be fetched from the database when more rows are needed.
void	setMaxFieldSize(int max) Sets the limit for the maximum number of bytes in a ResultSet column storing character or binary values to the given number of bytes.
void	setMaxRows(int max) Sets the limit for the maximum number of rows that any ResultSet object can contain to the given number.
void	setPoolable(boolean poolable) Requests that a Statement be pooled or not pooled.
void	setQueryTimeout(int seconds) Sets the number of seconds the driver will wait for a Statement object to execute to the given number of seconds.

Methods inherited from class nl.cwi.monetdb.jdbc.MonetWrapper

isWrapperFor, unwrap

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.sql.Statement

executeLargeBatch, executeLargeUpdate, executeLargeUpdate, executeLargeUpdate, executeLargeUpdate, getLargeMaxRows, getLargeUpdateCount, setLargeMaxRows

Methods inherited from interface java.sql.Wrapper

isWrapperFor, unwrap

Field Detail

closed

protected boolean closed

Whether this Statement object is closed or not

Method Detail

addBatch

public void addBatch(String sql)
              throws SQLException

Adds the given SQL command to the current list of commands for this Statement object. The commands in this list can be executed as a batch by calling the method executeBatch.

Specified by:

addBatch in interface Statement

Parameters:

sql - typically this is a static SQL INSERT or UPDATE statement

Throws:

SQLException - so the PreparedStatement can throw this exception

clearBatch

public void clearBatch()

Empties this Statement object's current list of SQL commands.

Specified by:

clearBatch in interface Statement

executeBatch

public int[] executeBatch()
                   throws SQLException

Submits a batch of commands to the database for execution and if all commands execute successfully, returns an array of update counts. The int elements of the array that is returned are ordered to correspond to the commands in the batch, which are ordered according to the order in which they were added to the batch. The elements in the array returned by the method executeBatch may be one of the following:

1. A number greater than or equal to zero -- indicates that the command was processed successfully and is an update count giving the number of rows in the database that were affected by the command's execution
2. A value of SUCCESS_NO_INFO -- indicates that the command was processed successfully but that the number of rows affected is unknown

If one of the commands in a batch update fails to execute properly, this method throws a BatchUpdateException, and a JDBC driver may or may not continue to process the remaining commands in the batch. However, the driver's behavior must be consistent with a particular DBMS, either always continuing to process commands or never continuing to process commands. MonetDB does continues after an error has occurred in the batch. If one of the commands attempts to return a result set, an SQLException is added to the SQLException list and thrown afterwards execution. Failing queries result in SQLExceptions too and may cause subparts of the batch to fail as well.

Specified by:

executeBatch in interface Statement

Returns:

an array of update counts containing one element for each command in the batch. The elements of the array are ordered according to the order in which commands were added to the batch.

Throws:

SQLException - if a database access error occurs. Throws BatchUpdateException (a subclass of SQLException) if one of the commands sent to the database fails to execute properly

cancel

public void cancel()
            throws SQLException

Cancels this Statement object if both the DBMS and driver support aborting an SQL statement. This method can be used by one thread to cancel a statement that is being executed by another thread.

Specified by:

cancel in interface Statement

Throws:

SQLException - if a database access error occurs or the cancel operation is not supported

clearWarnings

public void clearWarnings()

Clears all warnings reported for this Statement object. After a call to this method, the method getWarnings returns null until a new warning is reported for this Statement object.

Specified by:

clearWarnings in interface Statement

close

public void close()

Releases this Statement object's database and JDBC resources immediately instead of waiting for this to happen when it is automatically closed. It is generally good practice to release resources as soon as you are finished with them to avoid tying up database resources. Calling the method close on a Statement object that is already closed has no effect. A Statement object is automatically closed when it is garbage collected. When a Statement object is closed, its current ResultSet object, if one exists, is also closed.

Specified by:

close in interface AutoCloseable

Specified by:

close in interface Statement

execute

public boolean execute(String sql)
                throws SQLException

Executes the given SQL statement, which may return multiple results. In some (uncommon) situations, a single SQL statement may return multiple result sets and/or update counts. Normally you can ignore this unless you are (1) executing a stored procedure that you know may return multiple results or (2) you are dynamically executing an unknown SQL string. The execute method executes an SQL statement and indicates the form of the first result. You must then use the methods getResultSet or getUpdateCount to retrieve the result, and getMoreResults to move to any subsequent result(s).

Specified by:

execute in interface Statement

Parameters:

sql - any SQL statement

Returns:

true if the first result is a ResultSet object; false if it is an update count or there are no results

Throws:

SQLException - if a database access error occurs

execute

public boolean execute(String sql,
                       int autoGeneratedKeys)
                throws SQLException

Executes the given SQL statement, which may return multiple results, and signals the driver that any auto-generated keys should be made available for retrieval. The driver will ignore this signal if the SQL statement is not an INSERT statement. In some (uncommon) situations, a single SQL statement may return multiple result sets and/or update counts. Normally you can ignore this unless you are (1) executing a stored procedure that you know may return multiple results or (2) you are dynamically executing an unknown SQL string. The execute method executes an SQL statement and indicates the form of the first result. You must then use the methods getResultSet or getUpdateCount to retrieve the result, and getMoreResults to move to any subsequent result(s).

Specified by:

execute in interface Statement

Parameters:

sql - any SQL statement

autoGeneratedKeys - a constant indicating whether auto-generated keys should be made available for retrieval using the method getGeneratedKeys; one of the following constants: Statement.RETURN_GENERATED_KEYS or Statement.NO_GENERATED_KEYS

Returns:

true if the first result is a ResultSet object; false if it is an update count or there are no results

Throws:

SQLException - - if a database access error occurs or the second parameter supplied to this method is not Statement.RETURN_GENERATED_KEYS or Statement.NO_GENERATED_KEYS.

execute

public boolean execute(String sql,
                       int[] columnIndexes)
                throws SQLException

Executes the given SQL statement, which may return multiple results, and signals the driver that the auto-generated keys indicated in the given array should be made available for retrieval. This array contains the indexes of the columns in the target table that contain the auto-generated keys that should be made available. The driver will ignore the array if the given SQL statement is not an INSERT statement. Under some (uncommon) situations, a single SQL statement may return multiple result sets and/or update counts. Normally you can ignore this unless you are (1) executing a stored procedure that you know may return multiple results or (2) you are dynamically executing an unknown SQL string. The execute method executes an SQL statement and indicates the form of the first result. You must then use the methods getResultSet or getUpdateCount to retrieve the result, and getMoreResults to move to any subsequent result(s). MonetDB only supports returing the generated key for one column, which will be the first column that has a serial. Hence, this method cannot work as required and the driver will fall back to executing with request to the database to return the generated key, if any.

Specified by:

execute in interface Statement

Parameters:

sql - any SQL statement

columnIndexes - an array of the indexes of the columns in the inserted row that should be made available for retrieval by a call to the method getGeneratedKeys

Returns:

true if the first result is a ResultSet object; false if it is an update count or there are no results

Throws:

SQLException - if a database access error occurs or the elements in the int array passed to this method are not valid column indexes

execute

public boolean execute(String sql,
                       String[] columnNames)
                throws SQLException

Executes the given SQL statement, which may return multiple results, and signals the driver that the auto-generated keys indicated in the given array should be made available for retrieval. This array contains the names of the columns in the target table that contain the auto-generated keys that should be made available. The driver will ignore the array if the given SQL statement is not an INSERT statement. In some (uncommon) situations, a single SQL statement may return multiple result sets and/or update counts. Normally you can ignore this unless you are (1) executing a stored procedure that you know may return multiple results or (2) you are dynamically executing an unknown SQL string. The execute method executes an SQL statement and indicates the form of the first result. You must then use the methods getResultSet or getUpdateCount to retrieve the result, and getMoreResults to move to any subsequent result(s). MonetDB only supports returing the generated key for one column, which will be the first column that has a serial. Hence, this method cannot work as required and the driver will fall back to executing with request to the database to return the generated key, if any.

Specified by:

execute in interface Statement

Parameters:

sql - any SQL statement

columnNames - an array of the names of the columns in the inserted row that should be made available for retrieval by a call to the method getGeneratedKeys

Returns:

true if the next result is a ResultSet object; false if it is an update count or there are no more results

Throws:

SQLException - if a database access error occurs or the elements of the String array passed to this method are not valid column names

executeQuery

public ResultSet executeQuery(String sql)
                       throws SQLException

Executes the given SQL statement, which returns a single ResultSet object.

Specified by:

executeQuery in interface Statement

Parameters:

sql - an SQL statement to be sent to the database, typically a static SQL SELECT statement

Returns:

a ResultSet object that contains the data produced by the given query; never null

Throws:

SQLException - if a database access error occurs or the given SQL statement produces anything other than a single ResultSet object

executeUpdate

public int executeUpdate(String sql)
                  throws SQLException

Executes the given SQL statement, which may be an INSERT, UPDATE, or DELETE statement or an SQL statement that returns nothing, such as an SQL DDL statement.

Specified by:

executeUpdate in interface Statement

Parameters:

sql - an SQL INSERT, UPDATE or DELETE statement or an SQL statement that returns nothing

Returns:

either the row count for INSERT, UPDATE or DELETE statements, or 0 for SQL statements that return nothing

Throws:

SQLException - if a database access error occurs or the given SQL statement produces a ResultSet object

executeUpdate

public int executeUpdate(String sql,
                         int autoGeneratedKeys)
                  throws SQLException

Executes the given SQL statement and signals the driver with the given flag about whether the auto-generated keys produced by this Statement object should be made available for retrieval.

Specified by:

executeUpdate in interface Statement

Parameters:

sql - must be an SQL INSERT, UPDATE or DELETE statement or an SQL statement that returns nothing

autoGeneratedKeys - - a flag indicating whether auto-generated keys should be made available for retrieval; one of the following constants: Statement.RETURN_GENERATED_KEYS Statement.NO_GENERATED_KEYS

Returns:

either the row count for INSERT, UPDATE or DELETE statements, or 0 for SQL statements that return nothing

Throws:

SQLException - if a database access error occurs, the given SQL statement returns a ResultSet object, or the given constant is not one of those allowed

executeUpdate

public int executeUpdate(String sql,
                         int[] columnIndexes)
                  throws SQLException

Executes the given SQL statement and signals the driver that the auto-generated keys indicated in the given array should be made available for retrieval. The driver will ignore the array if the SQL statement is not an INSERT statement. MonetDB only supports returing the generated key for one column, which will be the first column that has a serial. Hence, this method cannot work as required and the driver will fall back to executing with request to the database to return the generated key, if any.

Specified by:

executeUpdate in interface Statement

Parameters:

sql - an SQL INSERT, UPDATE or DELETE statement or an SQL statement that returns nothing, such as an SQL DDL statement

columnIndexes - an array of column indexes indicating the columns that should be returned from the inserted row

Returns:

either the row count for INSERT, UPDATE, or DELETE statements, or 0 for SQL statements that return nothing

Throws:

SQLException - if a database access error occurs, the SQL statement returns a ResultSet object, or the second argument supplied to this method is not an int array whose elements are valid column indexes

executeUpdate

public int executeUpdate(String sql,
                         String[] columnNames)
                  throws SQLException

Executes the given SQL statement and signals the driver that the auto-generated keys indicated in the given array should be made available for retrieval. The driver will ignore the array if the SQL statement is not an INSERT statement. MonetDB only supports returing the generated key for one column, which will be the first column that has a serial. Hence, this method cannot work as required and the driver will fall back to executing with request to the database to return the generated key, if any.

Specified by:

executeUpdate in interface Statement

Parameters:

sql - an SQL INSERT, UPDATE or DELETE statement or an SQL statement that returns nothing, such as an SQL DDL statement

columnNames - an array of the names of the columns that should be returned from the inserted row

Returns:

either the row count for INSERT, UPDATE, or DELETE statements, or 0 for SQL statements that return nothing

Throws:

SQLException - if a database access error occurs, the SQL statement returns a ResultSet object, or the second argument supplied to this method is not a String array whose elements are valid column names

getConnection

public Connection getConnection()

Retrieves the Connection object that produced this Statement object.

Specified by:

getConnection in interface Statement

Returns:

the connection that produced this statement

getFetchDirection

public int getFetchDirection()

Retrieves the direction for fetching rows from database tables that is the default for result sets generated from this Statement object. If this Statement object has not set a fetch direction by calling the method setFetchDirection, the return value is ResultSet.FETCH_FORWARD.

Specified by:

getFetchDirection in interface Statement

Returns:

the default fetch direction for result sets generated from this Statement object

getFetchSize

public int getFetchSize()

Retrieves the number of result set rows that is the default fetch size for ResultSet objects generated from this Statement object. If this Statement object has not set a fetch size by calling the method setFetchSize, or the method setFetchSize was called as such to let the driver ignore the hint, 0 is returned.

Specified by:

getFetchSize in interface Statement

Returns:

the default fetch size for result sets generated from this Statement object

getGeneratedKeys

public ResultSet getGeneratedKeys()
                           throws SQLException

Retrieves any auto-generated keys created as a result of executing this Statement object. If this Statement object did not generate any keys, an empty ResultSet object is returned.

Specified by:

getGeneratedKeys in interface Statement

Returns:

a ResultSet object containing the auto-generated key(s) generated by the execution of this Statement object

Throws:

SQLException - - if a database access error occurs

getMaxFieldSize

public int getMaxFieldSize()

Retrieves the maximum number of bytes that can be returned for character and binary column values in a ResultSet object produced by this Statement object. This limit applies only to BINARY, VARBINARY, LONGVARBINARY, CHAR, VARCHAR, and LONGVARCHAR columns. If the limit is exceeded, the excess data is silently discarded. The MonetDB JDBC driver currently doesn't support limiting fieldsizes, and hence always return 0 (unlimited).

Specified by:

getMaxFieldSize in interface Statement

Returns:

the current column size limit for columns storing character and binary values; zero means there is no limit

getMaxRows

public int getMaxRows()

Retrieves the maximum number of rows that a ResultSet object produced by this Statement object can contain. If this limit is exceeded, the excess rows are silently dropped.

Specified by:

getMaxRows in interface Statement

Returns:

the current maximum number of rows for a ResultSet object produced by this Statement object; zero means there is no limit

getMoreResults

public boolean getMoreResults()
                       throws SQLException

Moves to this Statement object's next result, returns true if it is a ResultSet object, and implicitly closes any current ResultSet object(s) obtained with the method getResultSet. There are no more results when the following is true:
(!getMoreResults() && (getUpdateCount() == -1)

Specified by:

getMoreResults in interface Statement

Returns:

true if the next result is a ResultSet object; false if it is an update count or there are no more results

Throws:

SQLException - if a database access error occurs

See Also:

getMoreResults(int current)

getMoreResults

public boolean getMoreResults(int current)
                       throws SQLException

Moves to this Statement object's next result, deals with any current ResultSet object(s) according to the instructions specified by the given flag, and returns true if the next result is a ResultSet object. There are no more results when the following is true:
(!getMoreResults() && (getUpdateCount() == -1)

Specified by:

getMoreResults in interface Statement

Parameters:

current - one of the following Statement constants indicating what should happen to current ResultSet objects obtained using the method getResultSet: CLOSE_CURRENT_RESULT, KEEP_CURRENT_RESULT, or CLOSE_ALL_RESULTS

Returns:

true if the next result is a ResultSet object; false if it is an update count or there are no more results

Throws:

SQLException - if a database access error occurs

getQueryTimeout

public int getQueryTimeout()
                    throws SQLException

Retrieves the number of seconds the driver will wait for a Statement object to execute. If the limit is exceeded, a SQLException is thrown.

Specified by:

getQueryTimeout in interface Statement

Returns:

the current query timeout limit in seconds; zero means there is no limit

Throws:

SQLException - if a database access error occurs

See Also:

setQueryTimeout(int)

getResultSet

public ResultSet getResultSet()
                       throws SQLException

Retrieves the current result as a ResultSet object. This method should be called only once per result.

Specified by:

getResultSet in interface Statement

Returns:

the current result as a ResultSet object or null if the result is an update count or there are no more results

Throws:

SQLException - if a database access error occurs

getResultSetConcurrency

public int getResultSetConcurrency()

Retrieves the result set concurrency for ResultSet objects generated by this Statement object.

Specified by:

getResultSetConcurrency in interface Statement

Returns:

either ResultSet.CONCUR_READ_ONLY or ResultSet.CONCUR_UPDATABLE

getResultSetHoldability

public int getResultSetHoldability()
                            throws SQLException

Retrieves the result set holdability for ResultSet objects generated by this Statement object.

Specified by:

getResultSetHoldability in interface Statement

Returns:

either ResultSet.HOLD_CURSORS_OVER_COMMIT or ResultSet.CLOSE_CURSORS_AT_COMMIT

Throws:

SQLException - if a database access error occurs

getResultSetType

public int getResultSetType()

Retrieves the result set type for ResultSet objects generated by this Statement object.

Specified by:

getResultSetType in interface Statement

Returns:

one of ResultSet.TYPE_FORWARD_ONLY, ResultSet.TYPE_SCROLL_INSENSITIVE, or ResultSet.TYPE_SCROLL_SENSITIVE

getUpdateCount

public int getUpdateCount()
                   throws SQLException

Retrieves the current result as an update count; if the result is a ResultSet object or there are no more results, -1 is returned. This method should be called only once per result.

Specified by:

getUpdateCount in interface Statement

Returns:

the current result as an update count; -1 if the current result is a ResultSet object or there are no more results

Throws:

SQLException - if a database access error occurs

getWarnings

public SQLWarning getWarnings()
                       throws SQLException

Retrieves the first warning reported by calls on this Statement object. If there is more than one warning, subsequent warnings will be chained to the first one and can be retrieved by calling the method SQLWarning.getNextWarning on the warning that was retrieved previously. This method may not be called on a closed statement; doing so will cause an SQLException to be thrown. Note: Subsequent warnings will be chained to this SQLWarning.

Specified by:

getWarnings in interface Statement

Returns:

the first SQLWarning object or null if there are none

Throws:

SQLException - if a database access error occurs or this method is called on a closed connection

setCursorName

public void setCursorName(String name)
                   throws SQLException

Sets the SQL cursor name to the given String, which will be used by subsequent Statement object execute methods. This name can then be used in SQL positioned update or delete statements to identify the current row in the ResultSet object generated by this statement. If the database does not support positioned update/delete, this method is a noop. To insure that a cursor has the proper isolation level to support updates, the cursor's SELECT statement should have the form SELECT FOR UPDATE. If FOR UPDATE is not present, positioned updates may fail. Note: By definition, the execution of positioned updates and deletes must be done by a different Statement object than the one that generated the ResultSet object being used for positioning. Also, cursor names must be unique within a connection. Since MonetDB does not support positioned update/delete, this method is a noop.

Specified by:

setCursorName in interface Statement

Parameters:

name - the new cursor name, which must be unique within a connection

Throws:

SQLException - if a database access error occurs

setEscapeProcessing

public void setEscapeProcessing(boolean enable)
                         throws SQLException

Sets escape processing on or off. If escape scanning is on (the default), the driver will do escape substitution before sending the SQL statement to the database. Note: Since prepared statements have usually been parsed prior to making this call, disabling escape processing for PreparedStatements objects will have no effect. The MonetDB JDBC driver implements no escape processing at all in its current implementation because it is too expensive, and in general should not be necessary given SQL standards compliance. In this sense, this driver will ignore any call to this function.

Specified by:

setEscapeProcessing in interface Statement

Parameters:

enable - true to enable escape processing; false to disable it

Throws:

SQLException - if a database access error occurs

setFetchDirection

public void setFetchDirection(int direction)
                       throws SQLException

Gives the driver a hint as to the direction in which rows will be processed in ResultSet objects created using this Statement object. The default value is ResultSet.FETCH_FORWARD. Note that this method sets the default fetch direction for result sets generated by this Statement object. Each result set has its own methods for getting and setting its own fetch direction.

Specified by:

setFetchDirection in interface Statement

Parameters:

direction - the initial direction for processing rows

Throws:

SQLException - if a database access error occurs or the given direction is not one of ResultSet.FETCH_FORWARD, ResultSet.FETCH_REVERSE, or ResultSet.FETCH_UNKNOWN

setFetchSize

public void setFetchSize(int rows)
                  throws SQLException

Gives the JDBC driver a hint as to the number of rows that should be fetched from the database when more rows are needed. The number of rows specified affects only result sets created using this statement. If the value specified is zero, then the hint is ignored.

Specified by:

setFetchSize in interface Statement

Parameters:

rows - the number of rows to fetch

Throws:

SQLException - if the condition 0 <= rows <= this.getMaxRows() is not satisfied.

setMaxFieldSize

public void setMaxFieldSize(int max)
                     throws SQLException

Sets the limit for the maximum number of bytes in a ResultSet column storing character or binary values to the given number of bytes. This limit applies only to BINARY, VARBINARY, LONGVARBINARY, CHAR, VARCHAR, and LONGVARCHAR fields. If the limit is exceeded, the excess data is silently discarded. For maximum portability, use values greater than 256. MonetDB does not support any fieldsize limiting, and hence the driver does not emulate it either, since it doesn't really lead to memory reduction.

Specified by:

setMaxFieldSize in interface Statement

Parameters:

max - the new column size limit in bytes; zero means there is no limit

Throws:

SQLException - if a database access error occurs or the condition max >= 0 is not satisfied

setMaxRows

public void setMaxRows(int max)
                throws SQLException

Sets the limit for the maximum number of rows that any ResultSet object can contain to the given number. If the limit is exceeded, the excess rows are silently dropped.

Specified by:

setMaxRows in interface Statement

Parameters:

max - the new max rows limit; zero means there is no limit

Throws:

SQLException - if the condition max >= 0 is not satisfied

setQueryTimeout

public void setQueryTimeout(int seconds)
                     throws SQLException

Sets the number of seconds the driver will wait for a Statement object to execute to the given number of seconds. If the limit is exceeded, an SQLException is thrown.

Specified by:

setQueryTimeout in interface Statement

Parameters:

seconds - the new query timeout limit in seconds; zero means there is no limit

Throws:

SQLException - if a database access error occurs or the condition seconds >= 0 is not satisfied

isClosed

public boolean isClosed()

Retrieves whether this Statement object has been closed. A Statement is closed if the method close has been called on it, or if it is automatically closed.

Specified by:

isClosed in interface Statement

Returns:

true if this Statement object is closed; false if it is still open

setPoolable

public void setPoolable(boolean poolable)

Requests that a Statement be pooled or not pooled. The value specified is a hint to the statement pool implementation indicating whether the application wants the statement to be pooled. It is up to the statement pool manager as to whether the hint is used. The poolable value of a statement is applicable to both internal statement caches implemented by the driver and external statement caches implemented by application servers and other applications. By default, a Statement is not poolable when created, and a PreparedStatement and CallableStatement are poolable when created.

Specified by:

setPoolable in interface Statement

Parameters:

poolable - requests that the statement be pooled if true and that the statement not be pooled if false

isPoolable

public boolean isPoolable()

Returns a value indicating whether the Statement is poolable or not.

Specified by:

isPoolable in interface Statement

Returns:

true if the Statement is poolable; false otherwise

closeOnCompletion

public void closeOnCompletion()
                       throws SQLException

Specifies that this Statement will be closed when all its dependent result sets are closed. If execution of the Statement does not produce any result sets, this method has no effect.

Specified by:

closeOnCompletion in interface Statement

Throws:

SQLException - if this method is called on a closed Statement

isCloseOnCompletion

public boolean isCloseOnCompletion()
                            throws SQLException

Returns a value indicating whether this Statement will be closed when all its dependent result sets are closed.

Specified by:

isCloseOnCompletion in interface Statement

Returns:

true if the Statement will be closed when all of its dependent result sets are closed; false otherwise

Throws:

SQLException - if this method is called on a closed Statement