Interface Connection

public static final int TRANSACTION_NONE

This transaction isolation level indicates that transactions are not supported.

Field Value:

0

public static final int TRANSACTION_READ_COMMITTED

This transaction isolation level indicates that only committed data from other transactions will be read. If a transaction reads a row, then another transaction commits a change to that row, the first transaction would retrieve the changed row on subsequent reads of the same row.

Field Value:

2

public static final int TRANSACTION_READ_UNCOMMITTED

This transaction isolation level indicates that one transaction can read modifications by other transactions before the other transactions have committed their changes. This could result in invalid reads.

Field Value:

1

public static final int TRANSACTION_REPEATABLE_READ

This transaction isolation level indicates that only committed data from other transactions will be read. It also ensures that data read from a row will not be different on a subsequent read even if another transaction commits a change.

Field Value:

4

public static final int TRANSACTION_SERIALIZABLE

This transaction isolation level indicates that only committed data from other transactions will be read. It also ensures that data read from a row will not be different on a subsequent read even if another transaction commits a change. Additionally, rows modified by other transactions will not affect the result set returned during subsequent executions of the same WHERE clause in this transaction.

Field Value:

8

public MapClass> getTypeMap()
            throws SQLException

This method returns the mapping of SQL types to Java classes currently in use by this connection. This mapping will have no entries unless they have been manually added.

Returns:

The SQL type to Java class mapping.

Throws:

SQLException - If an error occurs.

public void clearWarnings()
            throws SQLException

This method clears all warnings that have occurred on this connection.

Throws:

SQLException - If an error occurs.

public void close()
            throws SQLException

This method immediately closes this database connection.

Specified by:

close in interface AutoCloseable

Throws:

SQLException - If an error occurs.

public void commit()
            throws SQLException

This method commits any SQL statements executed on this connection since the last commit or rollback.

Throws:

SQLException - If an error occurs.

public Statement createStatement()
            throws SQLException

This method creates a new SQL statement. The default result set type and concurrency will be used.

Returns:

A new Statement object.

Throws:

SQLException - If an error occurs.

See Also:

Statement

public Statement createStatement(int resultSetType,
                                 int resultSetConcurrency)
            throws SQLException

This method creates a new SQL statement with the specified type and concurrency. Valid values for these parameters are specified in the ResultSet class.

Parameters:

resultSetType - The type of result set to use for this statement.

resultSetConcurrency - The type of concurrency to be used in the result set for this statement.

Returns:

A new Statement object.

Throws:

SQLException - If an error occurs.

See Also:

Statement, ResultSet

public Statement createStatement(int resultSetType,
                                 int resultSetConcurrency,
                                 int resultSetHoldability)
            throws SQLException

This method creates a new SQL statement with the specified type, concurrency and holdability, instead of using the defaults. Valid values for these parameters are specified in the ResultSet class.

Parameters:

resultSetType - The type of result set to use for this statement.

resultSetConcurrency - The type of concurrency to be used in the result set for this statement.

resultSetHoldability - The type of holdability to be usd in the result set for this statement.

Returns:

A new Statement

Throws:

SQLException - If an error occurs.

Since:

1.4

See Also:

ResultSet

public boolean getAutoCommit()
            throws SQLException

This method tests whether or not auto commit mode is currently enabled. In auto commit mode, every SQL statement is committed its own transaction. Otherwise a transaction must be explicitly committed or rolled back.

Returns:

true if auto commit mode is enabled, false otherwise.

Throws:

SQLException - If an error occurs.

See Also:

commit(), rollback()

public String getCatalog()
            throws SQLException

This method returns the name of the catalog in use by this connection, if any.

Returns:

The name of the catalog, or null if none exists or catalogs are not supported by this database.

Throws:

SQLException - If an error occurs.

public int getHoldability()
            throws SQLException

Gets the default holdability of ResultSetS that are created from StatementS using this Connection.

Returns:

The current default holdability value, this must be one of ResultSet.HOLD_CURSORS_OVER_COMMIT or ResultSet.CLOSE_CURSORS_AT_COMMIT.

Throws:

SQLException - If an error occurs.

Since:

1.4

See Also:

ResultSet

public DatabaseMetaData getMetaData()
            throws SQLException

This method returns the meta data for this database connection.

Returns:

The meta data for this database.

Throws:

SQLException - If an error occurs.

See Also:

DatabaseMetaData

public int getTransactionIsolation()
            throws SQLException

This method returns the current transaction isolation mode. This will be one of the constants defined in this interface.

Returns:

The transaction isolation level.

Throws:

SQLException - If an error occurs.

public SQLWarning getWarnings()
            throws SQLException

This method returns the first warning that occurred on this connection, if any. If there were any subsequence warnings, they will be chained to the first one.

Returns:

The first SQLWarning that occurred, or null if there have been no warnings.

Throws:

SQLException - If an error occurs.

public boolean isClosed()
            throws SQLException

This method tests whether or not this connection has been closed.

Returns:

true if the connection is closed, false otherwise.

Throws:

SQLException - If an error occurs.

public boolean isReadOnly()
            throws SQLException

This method tests whether or not this connection is in read only mode.

Returns:

true if the connection is read only false otherwise.

Throws:

SQLException - If an error occurs.

public String nativeSQL(String sql)
            throws SQLException

This method converts the specified generic SQL statement into the native grammer of the database this object is connected to.

Parameters:

sql - The JDBC generic SQL statement.

Returns:

The native SQL statement.

Throws:

SQLException - If an error occurs.

public CallableStatement prepareCall(String sql)
            throws SQLException

This method creates a new CallableStatement for the specified SQL string. Thie method is designed to be used with stored procedures. The default result set type and concurrency will be used.

Parameters:

sql - The SQL statement to use in creating this CallableStatement.

Returns:

A new CallableStatement.

Throws:

SQLException - If an error occurs.

See Also:

CallableStatement

public CallableStatement prepareCall(String sql,
                                     int resultSetType,
                                     int resultSetConcurrency)
            throws SQLException

This method creates a new CallableStatement for the specified SQL string. Thie method is designed to be used with stored procedures. The specified result set type and concurrency will be used. Valid values for these parameters are specified in the ResultSet class.

Parameters:

sql - The SQL statement to use in creating this PreparedStatement.

resultSetType - The type of result set to use for this statement.

resultSetConcurrency - The type of concurrency to be used in the result set for this statement.

Returns:

A new CallableStatement.

Throws:

SQLException - If an error occurs.

See Also:

CallableStatement, ResultSet

public CallableStatement prepareCall(String sql,
                                     int resultSetType,
                                     int resultSetConcurrency,
                                     int resultSetHoldability)
            throws SQLException

This method creates a new CallableStatement for the specified SQL string. Thie method is designed to be used with stored procedures. The specified result set type, concurrency and holdability will be used. Valid values for these parameters are specified in the ResultSet class.

Parameters:

sql - The SQL statement to use in creating this PreparedStatement.

resultSetType - The type of result set to use for this statement.

resultSetConcurrency - The type of concurrency to be used in the result set for this statement.

resultSetHoldability - The type of holdability to be used in the result set for this statement.

Returns:

A new CallableStatement.

Throws:

SQLException - If an error occurs.

Since:

1.4

See Also:

CallableStatement, ResultSet

public PreparedStatement prepareStatement(String sql)
            throws SQLException

This method creates a new PreparedStatement for the specified SQL string. This method is designed for use with parameterized statements. The default result set type and concurrency will be used.

Parameters:

sql - The SQL statement to use in creating this PreparedStatement.

Returns:

A new PreparedStatement.

Throws:

SQLException - If an error occurs.

See Also:

PreparedStatement

public PreparedStatement prepareStatement(String sql,
                                          int autoGeneratedKeys)
            throws SQLException

Since:

1.4

public PreparedStatement prepareStatement(String sql,
                                          int resultSetType,
                                          int resultSetConcurrency)
            throws SQLException

This method creates a new PreparedStatement for the specified SQL string. This method is designed for use with parameterized statements. The specified result set type and concurrency will be used. Valid values for these parameters are specified in the ResultSet class.

Parameters:

sql - The SQL statement to use in creating this PreparedStatement.

resultSetType - The type of result set to use for this statement.

resultSetConcurrency - The type of concurrency to be used in the result set for this statement.

Returns:

A new PreparedStatement.

Throws:

SQLException - If an error occurs.

See Also:

PreparedStatement, ResultSet

public PreparedStatement prepareStatement(String sql,
                                          int resultSetType,
                                          int resultSetConcurrency,
                                          int resultSetHoldability)
            throws SQLException

This method creates a new PreparedStatement for the specified SQL string. This method is designed for use with parameterized statements. The specified result set type, concurrency and holdability will be used. Valid values for these parameters are specified in the ResultSet class.

Parameters:

sql - The SQL statement to use in creating this PreparedStatement.

resultSetType - The type of result set to use for this statement.

resultSetConcurrency - The type of concurrency to be used in the result set for this statement.

resultSetHoldability - The type of holdability to be usd in the result set for this statement.

Returns:

A new PreparedStatement.

Throws:

SQLException - If an error occurs.

Since:

1.4

See Also:

PreparedStatement, ResultSet

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

Since:

1.4

public PreparedStatement prepareStatement(String sql,
                                          String[] columnNames)
            throws SQLException

Since:

1.4

public void releaseSavepoint(Savepoint savepoint)
            throws SQLException

Removes the specified savepoint from this Connection. Refering to a savepoint after it was removed is an error and will throw an SQLException.

Parameters:

savepoint - The savepoint to release.

Throws:

SQLException - If an error occurs.

Since:

1.4

public void rollback()
            throws SQLException

This method rolls back any SQL statements executed on this connection since the last commit or rollback.

Throws:

SQLException - If an error occurs.

public void rollback(Savepoint savepoint)
            throws SQLException

Undoes all changes made after the specified savepoint was set.

Parameters:

savepoint - The safepoint to roll back to.

Throws:

SQLException - If an error occurs.

Since:

1.4

public void setAutoCommit(boolean autoCommit)
            throws SQLException

This method turns auto commit mode on or off. In auto commit mode, every SQL statement is committed its own transaction. Otherwise a transaction must be explicitly committed or rolled back.

Parameters:

autoCommit - true to enable auto commit mode, false to disable it.

Throws:

SQLException - If an error occurs.

See Also:

commit(), rollback()

public void setCatalog(String catalog)
            throws SQLException

This method sets the name of the catalog in use by this connection. Note that this method does nothing if catalogs are not supported by this database.

Parameters:

catalog - The name of the catalog to use for this connection.

Throws:

SQLException - If an error occurs.

public void setHoldability(int holdability)
            throws SQLException

Sets the default holdability of ResultSetS that are created from StatementS using this Connection.

Parameters:

holdability - The default holdability value to set, this must be one of ResultSet.HOLD_CURSORS_OVER_COMMIT or ResultSet.CLOSE_CURSORS_AT_COMMIT.

Throws:

SQLException - If an error occurs.

Since:

1.4

See Also:

ResultSet

public void setReadOnly(boolean readOnly)
            throws SQLException

This method turns read only mode on or off. It may not be called while a transaction is in progress.

Parameters:

readOnly - true if this connection is read only, false otherwise.

Throws:

SQLException - If an error occurs.

public Savepoint setSavepoint()
            throws SQLException

Creates a new unnamed savepoint for this Connection

Returns:

The Savepoint object representing the savepoint.

Throws:

SQLException - If an error occurs.

Since:

1.4

public Savepoint setSavepoint(String name)
            throws SQLException

Creates a new savepoint with the specifiend name for this Connection.

Parameters:

name - The name of the savepoint.

Returns:

The Savepoint object representing the savepoint.

Throws:

SQLException - If an error occurs.

Since:

1.4

public void setTransactionIsolation(int level)
            throws SQLException

This method sets the current transaction isolation mode. This must be one of the constants defined in this interface.

Parameters:

level - The transaction isolation level.

Throws:

SQLException - If an error occurs.

public void setTypeMap(Map> map)
            throws SQLException

This method sets the mapping table for SQL types to Java classes. Any entries in this map override the defaults.

Parameters:

map - The new SQL mapping table.

Throws:

SQLException - If an error occurs.