org.mariadb.jdbc

Class MySQLStatement

java.lang.Object

org.mariadb.jdbc.MySQLStatement

All Implemented Interfaces:

AutoCloseable, Statement, Wrapper

Direct Known Subclasses:

MySQLPreparedStatement

public class MySQLStatement
extends Object
implements Statement

Field Summary

Fields

Modifier and Type	Field and Description
protected MySQLConnection	connection the Connection object.

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

Constructor Summary

Constructors

Constructor and Description
MySQLStatement(MySQLConnection connection) Creates a new Statement.

Method Summary

Methods

Modifier and Type	Method and Description
void	addBatch(String sql) Adds the given SQL command to the current list of commmands 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 the warnings reported on 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()
protected boolean	execute(Query query) executes a query.
boolean	execute(String queryString) executes a query.
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.
protected ResultSet	executeQuery(Query query) executes a select query.
ResultSet	executeQuery(String queryString) executes a select query.
protected int	executeUpdate(Query query) Executes an update.
int	executeUpdate(String queryString) Executes an update.
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() gets the connection that created this statement
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.
MySQLProtocol	getProtocol() returns the protocol.
protected QueryResult	getQueryResult() returns the query result.
int	getQueryTimeout() Retrieves the number of seconds the driver will wait for a Statement object to execute.
ResultSet	getResultSet()
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()
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()
boolean	isPoolable() Returns a value indicating whether the Statement is poolable or not.
boolean	isStreaming()
boolean	isWrapperFor(Class<?> interfaceOrWrapper) Returns true if this either implements the interface argument or is directly or indirectly a wrapper for an object that does.
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 for ResultSet objects genrated by this Statement.
void	setLocalInfileInputStream(InputStream inputStream) Sets the inputStream that will be used for the next execute that uses "LOAD DATA LOCAL INFILE".
void	setMaxFieldSize(int max) Sets the limit for the maximum number of bytes that can be returned for character and binary column values in a ResultSet object produced by this Statement object.
void	setMaxRows(int max) Sets the limit for the maximum number of rows that any ResultSet object generated by this Statement object can contain to the given number.
void	setPoolable(boolean poolable) Requests that a Statement be pooled or not pooled.
protected void	setQueryResult(QueryResult result) sets the current query result
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.
static void	unloadDriver()
<T> T	unwrap(Class<T> iface) Returns an object that implements the given interface to allow access to non-standard methods, or standard methods not exposed by the proxy.

Methods inherited from class java.lang.Object

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

Field Detail

connection

protected MySQLConnection connection

the Connection object.

Constructor Detail

MySQLStatement

public MySQLStatement(MySQLConnection connection)

Creates a new Statement.

Parameters:

connection - the connection to return in getConnection.

Method Detail

isStreaming

public boolean isStreaming()

getProtocol

public MySQLProtocol getProtocol()

returns the protocol.

Returns:

the protocol used.

execute

protected boolean execute(Query query)
                   throws SQLException

executes a query.

Parameters:

query - the query

Returns:

true if there was a result set, false otherwise.

Throws:

SQLException

executeQuery

protected ResultSet executeQuery(Query query)
                          throws SQLException

executes a select query.

Parameters:

query - the query to send to the server

Returns:

a result set

Throws:

SQLException - if something went wrong

executeUpdate

protected int executeUpdate(Query query)
                     throws SQLException

Executes an update.

Parameters:

query - the update query.

Returns:

update count

Throws:

SQLException - if the query could not be sent to server.

execute

public boolean execute(String queryString)
                throws SQLException

executes a query.

Specified by:

execute in interface Statement

Parameters:

queryString - the query

Returns:

true if there was a result set, false otherwise.

Throws:

SQLException

executeUpdate

public int executeUpdate(String queryString)
                  throws SQLException

Executes an update.

Specified by:

executeUpdate in interface Statement

Parameters:

queryString - the update query.

Returns:

update count

Throws:

SQLException - if the query could not be sent to server.

executeQuery

public ResultSet executeQuery(String queryString)
                       throws SQLException

executes a select query.

Specified by:

executeQuery in interface Statement

Parameters:

queryString - the query to send to the server

Returns:

a result set

Throws:

SQLException - if something went wrong

close

public void close()
           throws SQLException

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.

Note: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

Throws:

SQLException - if a database access error occurs

getMaxFieldSize

public int getMaxFieldSize()
                    throws SQLException

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, NCHAR, NVARCHAR, LONGNVARCHAR and LONGVARCHAR columns. If the limit is exceeded, the excess data is silently discarded.

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

Throws:

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

See Also:

setMaxFieldSize(int)

setMaxFieldSize

public void setMaxFieldSize(int max)
                     throws SQLException

Sets the limit for 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, NCHAR, NVARCHAR, LONGNVARCHAR and LONGVARCHAR fields. If the limit is exceeded, the excess data is silently discarded. For maximum portability, use values greater than 256.

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, this method is called on a closed Statement or the condition max >= 0 is not satisfied

See Also:

getMaxFieldSize()

getMaxRows

public int getMaxRows()
               throws SQLException

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

Throws:

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

See Also:

setMaxRows(int)

setMaxRows

public void setMaxRows(int max)
                throws SQLException

Sets the limit for the maximum number of rows that any ResultSet object generated by this Statement 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 a database access error occurs, this method is called on a closed Statement or the condition max >= 0 is not satisfied

See Also:

getMaxRows()

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.

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 or this method is called on a closed Statement

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 or this method is called on a closed Statement

See Also:

setQueryTimeout(int)

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. A JDBC driver must apply this limit to the execute, executeQuery and executeUpdate methods. JDBC driver implementations may also apply this limit to ResultSet methods (consult your driver vendor documentation for details).

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, this method is called on a closed Statement or the condition seconds >= 0 is not satisfied

See Also:

getQueryTimeout()

setLocalInfileInputStream

public void setLocalInfileInputStream(InputStream inputStream)

Sets the inputStream that will be used for the next execute that uses "LOAD DATA LOCAL INFILE". The name specified as local file/URL will be ignored.

Parameters:

inputStream -

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 this method is called on a closed Statement

SQLFeatureNotSupportedException - if the JDBC driver does not support this method

getWarnings

public SQLWarning getWarnings()
                       throws SQLException

Retrieves the first warning reported by calls on this Statement object. Subsequent Statement object warnings will be chained to this SQLWarning object.

The warning chain is automatically cleared each time a statement is (re)executed. This method may not be called on a closed Statement object; doing so will cause an SQLException to be thrown.

Note: If you are processing a ResultSet object, any warnings associated with reads on that ResultSet object will be chained on it rather than on the Statement object that produced it.

Specified by:

getWarnings in interface Statement

Returns:

the first SQLWarning object or null if there are no warnings

Throws:

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

clearWarnings

public void clearWarnings()
                   throws SQLException

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

Specified by:

clearWarnings in interface Statement

Throws:

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

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.

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 or this method is called on a closed Statement

SQLFeatureNotSupportedException - if the JDBC driver does not support this method

getConnection

public Connection getConnection()
                         throws SQLException

gets the connection that created this statement

Specified by:

getConnection in interface Statement

Returns:

the connection

Throws:

SQLException

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:

 // stmt is a Statement object
 ((stmt.getMoreResults(current) == false) && (stmt.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: Statement.CLOSE_CURRENT_RESULT, Statement.KEEP_CURRENT_RESULT, or Statement.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, this method is called on a closed Statement or the argument supplied is not one of the following: Statement.CLOSE_CURRENT_RESULT, Statement.KEEP_CURRENT_RESULT or Statement.CLOSE_ALL_RESULTS

SQLFeatureNotSupportedException - if DatabaseMetaData.supportsMultipleOpenResults returns false and either Statement.KEEP_CURRENT_RESULT or Statement.CLOSE_ALL_RESULTS are supplied as the argument.

Since:

1.4

See Also:

execute(org.mariadb.jdbc.internal.common.query.Query)

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.

Note:If the columns which represent the auto-generated keys were not specified, the JDBC driver implementation will determine the columns which best represent the auto-generated keys.

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 or this method is called on a closed Statement

SQLFeatureNotSupportedException - if the JDBC driver does not support this method

Since:

1.4

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. The driver will ignore the flag if the SQL statement is not an INSERT statement, or an SQL statement able to return auto-generated keys (the list of such statements is vendor-specific).

Specified by:

executeUpdate in interface Statement

Parameters:

sql - an SQL Data Manipulation Language (DML) statement, such as INSERT, UPDATE or DELETE; or an SQL statement that returns nothing, such as a DDL statement.

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 (1) the row count for SQL Data Manipulation Language (DML) statements or (2) 0 for SQL statements that return nothing

Throws:

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

SQLFeatureNotSupportedException - if the JDBC driver does not support this method with a constant of Statement.RETURN_GENERATED_KEYS

Since:

1.4

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. 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 SQL statement is not an INSERT statement, or an SQL statement able to return auto-generated keys (the list of such statements is vendor-specific).

Specified by:

executeUpdate in interface Statement

Parameters:

sql - an SQL Data Manipulation Language (DML) statement, such as INSERT, UPDATE or DELETE; or an SQL statement that returns nothing, such as a DDL statement.

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

Returns:

either (1) the row count for SQL Data Manipulation Language (DML) statements or (2) 0 for SQL statements that return nothing

Throws:

SQLException - if a database access error occurs, this method is called on a closed Statement, 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

SQLFeatureNotSupportedException - if the JDBC driver does not support this method

Since:

1.4

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. 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 SQL statement is not an INSERT statement, or an SQL statement able to return auto-generated keys (the list of such statements is vendor-specific).

Specified by:

executeUpdate in interface Statement

Parameters:

sql - an SQL Data Manipulation Language (DML) statement, such as INSERT, UPDATE or DELETE; or an SQL statement that returns nothing, such as a 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, this method is called on a closed Statement, 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

SQLFeatureNotSupportedException - if the JDBC driver does not support this method

Since:

1.4

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, or an SQL statement able to return auto-generated keys (the list of such statements is vendor-specific).

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, this method is called on a closed Statement or the second parameter supplied to this method is not Statement.RETURN_GENERATED_KEYS or Statement.NO_GENERATED_KEYS.

SQLFeatureNotSupportedException - if the JDBC driver does not support this method with a constant of Statement.RETURN_GENERATED_KEYS

Since:

1.4

See Also:

getResultSet(), getUpdateCount(), getMoreResults(int), getGeneratedKeys()

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 SQL statement is not an INSERT statement, or an SQL statement able to return auto-generated keys (the list of such statements is vendor-specific).

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).

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, this method is called on a closed Statement or the elements in the int array passed to this method are not valid column indexes

SQLFeatureNotSupportedException - if the JDBC driver does not support this method

Since:

1.4

See Also:

getResultSet(), getUpdateCount(), getMoreResults(int)

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 SQL statement is not an INSERT statement, or an SQL statement able to return auto-generated keys (the list of such statements is vendor-specific).

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

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, this method is called on a closed Statement or the elements of the String array passed to this method are not valid column names

SQLFeatureNotSupportedException - if the JDBC driver does not support this method

Since:

1.4

See Also:

getResultSet(), getUpdateCount(), getMoreResults(int), getGeneratedKeys()

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 or this method is called on a closed Statement

Since:

1.4

isClosed

public boolean isClosed()
                 throws SQLException

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

Throws:

SQLException - if a database access error occurs

Since:

1.6

setPoolable

public void setPoolable(boolean poolable)
                 throws SQLException

Requests that a Statement be pooled or not pooled. The value specified is a hint to the statement pool implementation indicating whether the applicaiton 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

Throws:

SQLException - if this method is called on a closed Statement

Since:

1.6

isPoolable

public boolean isPoolable()
                   throws SQLException

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

Throws:

SQLException - if this method is called on a closed Statement

Since:

1.6

See Also:

setPoolable(boolean)

getResultSet

public ResultSet getResultSet()
                       throws SQLException

Specified by:

getResultSet in interface Statement

Throws:

SQLException

getUpdateCount

public int getUpdateCount()
                   throws SQLException

Specified by:

getUpdateCount in interface Statement

Throws:

SQLException

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:

 // stmt is a Statement object
 ((stmt.getMoreResults() == false) && (stmt.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 or this method is called on a closed Statement

See Also:

execute(org.mariadb.jdbc.internal.common.query.Query)

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, this method is called on a closed Statement or the given direction is not one of ResultSet.FETCH_FORWARD, ResultSet.FETCH_REVERSE, or ResultSet.FETCH_UNKNOWN

Since:

1.2

See Also:

getFetchDirection()

getFetchDirection

public int getFetchDirection()
                      throws SQLException

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 implementation-specific.

Specified by:

getFetchDirection in interface Statement

Returns:

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

Throws:

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

Since:

1.2

See Also:

setFetchDirection(int)

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 for ResultSet objects genrated by this Statement. If the value specified is zero, then the hint is ignored. The default value is zero.

Specified by:

setFetchSize in interface Statement

Parameters:

rows - the number of rows to fetch

Throws:

SQLException - if a database access error occurs, this method is called on a closed Statement or the condition rows >= 0 is not satisfied.

Since:

1.2

See Also:

getFetchSize()

getFetchSize

public int getFetchSize()
                 throws SQLException

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, the return value is implementation-specific.

Specified by:

getFetchSize in interface Statement

Returns:

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

Throws:

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

Since:

1.2

See Also:

setFetchSize(int)

getResultSetConcurrency

public int getResultSetConcurrency()
                            throws SQLException

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

Throws:

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

Since:

1.2

getResultSetType

public int getResultSetType()
                     throws SQLException

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

Throws:

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

Since:

1.2

addBatch

public void addBatch(String sql)
              throws SQLException

Adds the given SQL command to the current list of commmands 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 SQL INSERT or UPDATE statement

Throws:

SQLException - if a database access error occurs, this method is called on a closed Statement or the driver does not support batch updates

Since:

1.2

See Also:

executeBatch(), DatabaseMetaData.supportsBatchUpdates()

clearBatch

public void clearBatch()
                throws SQLException

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

Specified by:

clearBatch in interface Statement

Throws:

SQLException - if a database access error occurs, this method is called on a closed Statement or the driver does not support batch updates

Since:

1.2

See Also:

addBatch(java.lang.String), DatabaseMetaData.supportsBatchUpdates()

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. If the driver continues processing after a failure, the array returned by the method BatchUpdateException.getUpdateCounts will contain as many elements as there are commands in the batch, and at least one of the elements will be the following:

3. A value of EXECUTE_FAILED -- indicates that the command failed to execute successfully and occurs only if a driver continues to process commands after a command fails

The possible implementations and return values have been modified in the Java 2 SDK, Standard Edition, version 1.3 to accommodate the option of continuing to proccess commands in a batch update after a BatchUpdateException obejct has been thrown.

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, this method is called on a closed Statement or the driver does not support batch statements. Throws BatchUpdateException (a subclass of SQLException) if one of the commands sent to the database fails to execute properly or attempts to return a result set.

Since:

1.3

See Also:

addBatch(java.lang.String), DatabaseMetaData.supportsBatchUpdates()

unwrap

public <T> T unwrap(Class<T> iface)
         throws SQLException

Returns an object that implements the given interface to allow access to non-standard methods, or standard methods not exposed by the proxy.

If the receiver implements the interface then the result is the receiver or a proxy for the receiver. If the receiver is a wrapper and the wrapped object implements the interface then the result is the wrapped object or a proxy for the wrapped object. Otherwise return the the result of calling unwrap recursively on the wrapped object or a proxy for that result. If the receiver is not a wrapper and does not implement the interface, then an SQLException is thrown.

Specified by:

unwrap in interface Wrapper

Parameters:

iface - A Class defining an interface that the result must implement.

Returns:

an object that implements the interface. May be a proxy for the actual implementing object.

Throws:

SQLException - If no object found that implements the interface

Since:

1.6

isWrapperFor

public boolean isWrapperFor(Class<?> interfaceOrWrapper)
                     throws SQLException

Returns true if this either implements the interface argument or is directly or indirectly a wrapper for an object that does. Returns false otherwise. If this implements the interface then return true, else if this is a wrapper then return the result of recursively calling isWrapperFor on the wrapped object. If this does not implement the interface and is not a wrapper, return false. This method should be implemented as a low-cost operation compared to unwrap so that callers can use this method to avoid expensive unwrap calls that may fail. If this method returns true then calling unwrap with the same argument should succeed.

Specified by:

isWrapperFor in interface Wrapper

Parameters:

interfaceOrWrapper - a Class defining an interface.

Returns:

true if this implements the interface or directly or indirectly wraps an object that does.

Throws:

SQLException - if an error occurs while determining whether this is a wrapper for an object with the given interface.

Since:

1.6

getQueryResult

protected QueryResult getQueryResult()

returns the query result.

Returns:

the queryresult

setQueryResult

protected void setQueryResult(QueryResult result)

sets the current query result

Parameters:

result -

closeOnCompletion

public void closeOnCompletion()
                       throws SQLException

Specified by:

closeOnCompletion in interface Statement

Throws:

SQLException

isCloseOnCompletion

public boolean isCloseOnCompletion()
                            throws SQLException

Specified by:

isCloseOnCompletion in interface Statement

Throws:

SQLException

unloadDriver

public static void unloadDriver()