org.pajes.db
Class ConnectionWrapper

java.lang.Object
  org.pajes.db.ConnectionWrapper

All Implemented Interfaces:

java.sql.Connection, java.sql.Wrapper

public class ConnectionWrapper
extends java.lang.Object
implements java.sql.Connection

A wrapper for java.sql.Connection objects to add logging of statements executed and the elapsed execution times.

Field Summary

Fields inherited from interface java.sql.Connection

TRANSACTION_NONE, TRANSACTION_READ_COMMITTED, TRANSACTION_READ_UNCOMMITTED, TRANSACTION_REPEATABLE_READ, TRANSACTION_SERIALIZABLE

Method Summary

void	clearWarnings() Clears all warnings reported for this Connection object.
void	close() Releases a Connection's database and JDBC resources immediately instead of waiting for them to be automatically released.
void	commit() Makes all changes made since the previous commit/rollback permanent and releases any database locks currently held by the Connection.
java.sql.Array	createArrayOf(java.lang.String typeName, java.lang.Object[] elements)
java.sql.Blob	createBlob()
java.sql.Clob	createClob()
java.sql.NClob	createNClob()
java.sql.SQLXML	createSQLXML()
java.sql.Statement	createStatement() Creates a Statement object for sending SQL statements to the database.
java.sql.Statement	createStatement(int resultSetType, int resultSetConcurrency) Creates a Statement object that will generate ResultSet objects with the given type and concurrency.
java.sql.Statement	createStatement(int resultSetType, int resultSetConcurrency, int resultSetHoldability) Creates a Statement object that will generate ResultSet objects with the given type, concurrency, and holdability.
java.sql.Struct	createStruct(java.lang.String typeName, java.lang.Object[] attributes)
java.lang.String	getAcquiredAt() Returns the stack trace from where this connection was acquired, excluding org.pajes.db classes.
boolean	getAutoCommit() Gets the current auto-commit state.
java.lang.String	getCatalog() Returns the Connection's current catalog name.
java.util.Properties	getClientInfo()
java.lang.String	getClientInfo(java.lang.String name)
int	getHoldability() Retrieves the current holdability of ResultSet objects created using this Connection object.
long	getLastUsedTime() Return the last time that this connection was used.
java.sql.DatabaseMetaData	getMetaData() Gets the metadata regarding this connection's database.
java.lang.Thread	getOwner() Gets the Thread that is the current owner of this connection.
int	getTransactionIsolation() Gets this Connection's current transaction isolation level.
java.util.Map<java.lang.String,java.lang.Class<?>>	getTypeMap() Gets the type map object associated with this connection.
int	getUsedCount() Returns the number of times that this connection has been used.
java.sql.SQLWarning	getWarnings() Returns the first warning reported by calls on this Connection.
boolean	isClosed() Tests to see if a Connection is closed.
boolean	isReadOnly() Tests to see if the connection is in read-only mode.
boolean	isValid(int timeout)
boolean	isWrapperFor(java.lang.Class<?> arg0)
java.lang.String	nativeSQL(java.lang.String sql) Converts the given SQL statement into the system's native SQL grammar.
java.sql.CallableStatement	prepareCall(java.lang.String sql) Creates a CallableStatement object for calling database stored procedures.
java.sql.CallableStatement	prepareCall(java.lang.String sql, int resultSetType, int resultSetConcurrency) Creates a CallableStatement object that will generate ResultSet objects with the given type and concurrency.
java.sql.CallableStatement	prepareCall(java.lang.String sql, int resultSetType, int resultSetConcurrency, int resultSetHoldability) Creates a CallableStatement object that will generate ResultSet objects with the given type and concurrency.
java.sql.PreparedStatement	prepareStatement(java.lang.String sql) Creates a PreparedStatement object for sending parameterized SQL statements to the database.
java.sql.PreparedStatement	prepareStatement(java.lang.String sql, int autoGeneratedKeys) Creates a default PreparedStatement object that has the capability to retrieve auto-generated keys.
java.sql.PreparedStatement	prepareStatement(java.lang.String sql, int[] columnIndexes) Creates a default PreparedStatement object capable of returning the auto-generated keys designated by the given array.
java.sql.PreparedStatement	prepareStatement(java.lang.String sql, int resultSetType, int resultSetConcurrency) Creates a PreparedStatement object that will generate ResultSet objects with the given type and concurrency.
java.sql.PreparedStatement	prepareStatement(java.lang.String sql, int resultSetType, int resultSetConcurrency, int resultSetHoldability) Creates a PreparedStatement object that will generate ResultSet objects with the given type, concurrency, and holdability.
java.sql.PreparedStatement	prepareStatement(java.lang.String sql, java.lang.String[] columnNames) Creates a default PreparedStatement object capable of returning the auto-generated keys designated by the given array.
void	releaseSavepoint(java.sql.Savepoint savepoint) Removes the given Savepoint object from the current transaction.
void	rollback() Drops all changes made since the previous commit/rollback and releases any database locks currently held by this Connection.
void	rollback(java.sql.Savepoint savepoint) Undoes all changes made after the given Savepoint object was set.
void	setAutoCommit(boolean autoCommit) Sets this connection's auto-commit mode.
void	setCatalog(java.lang.String catalog) Sets a catalog name in order to select a subspace of this Connection's database in which to work.
void	setClientInfo(java.util.Properties properties)
void	setClientInfo(java.lang.String name, java.lang.String value)
void	setHoldability(int holdability) Changes the holdability of ResultSet objects created using this Connection object to the given holdability.
void	setReadOnly(boolean readOnly) Puts this connection in read-only mode as a hint to enable database optimizations.
java.sql.Savepoint	setSavepoint() Creates an unnamed savepoint in the current transaction and returns the new Savepoint object that represents it.
java.sql.Savepoint	setSavepoint(java.lang.String name) Creates a savepoint with the given name in the current transaction and returns the new Savepoint object that represents it.
void	setTransactionIsolation(int level) Attempts to change the transaction isolation level to the one given.
void	setTypeMap(java.util.Map<java.lang.String,java.lang.Class<?>> map) Installs the given type map as the type map for this connection.
java.lang.String	toString()
<T> T	unwrap(java.lang.Class<T> iface)

Methods inherited from class java.lang.Object

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

Method Detail

clearWarnings

public void clearWarnings()
                   throws java.sql.SQLException

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

Specified by:

clearWarnings in interface java.sql.Connection

Throws:

java.sql.SQLException - if a database access error occurs

close

public void close()
           throws java.sql.SQLException

Releases a Connection's database and JDBC resources immediately instead of waiting for them to be automatically released.

Note: A Connection is automatically closed when it is garbage collected. Certain fatal errors also result in a closed Connection.

Specified by:

close in interface java.sql.Connection

Throws:

java.sql.SQLException - if a database access error occurs

commit

public void commit()
            throws java.sql.SQLException

Makes all changes made since the previous commit/rollback permanent and releases any database locks currently held by the Connection. This method should be used only when auto-commit mode has been disabled.

Specified by:

commit in interface java.sql.Connection

Throws:

java.sql.SQLException - if a database access error occurs

See Also:

setAutoCommit(boolean)

createArrayOf

public java.sql.Array createArrayOf(java.lang.String typeName,
                                    java.lang.Object[] elements)
                             throws java.sql.SQLException

Specified by:

createArrayOf in interface java.sql.Connection

Parameters:

typeName -

elements -

Returns:

Throws:

java.sql.SQLException

See Also:

Connection.createArrayOf(java.lang.String, java.lang.Object[])

createBlob

public java.sql.Blob createBlob()
                         throws java.sql.SQLException

Specified by:

createBlob in interface java.sql.Connection

Returns:

Throws:

java.sql.SQLException

See Also:

Connection.createBlob()

createClob

public java.sql.Clob createClob()
                         throws java.sql.SQLException

Specified by:

createClob in interface java.sql.Connection

Returns:

Throws:

java.sql.SQLException

See Also:

Connection.createClob()

createNClob

public java.sql.NClob createNClob()
                           throws java.sql.SQLException

Specified by:

createNClob in interface java.sql.Connection

Returns:

Throws:

java.sql.SQLException

See Also:

Connection.createNClob()

createSQLXML

public java.sql.SQLXML createSQLXML()
                             throws java.sql.SQLException

Specified by:

createSQLXML in interface java.sql.Connection

Returns:

Throws:

java.sql.SQLException

See Also:

Connection.createSQLXML()

createStatement

public java.sql.Statement createStatement()
                                   throws java.sql.SQLException

Creates a Statement object for sending SQL statements to the database. SQL statements without parameters are normally executed using Statement objects. If the same SQL statement is executed many times, it is more efficient to use a PreparedStatement object.

Result sets created using the returned Statement object will by default have forward-only type and read-only concurrency.

Specified by:

createStatement in interface java.sql.Connection

Returns:

a new Statement object

Throws:

java.sql.SQLException - if a database access error occurs

createStatement

public java.sql.Statement createStatement(int resultSetType,
                                          int resultSetConcurrency)
                                   throws java.sql.SQLException

Creates a Statement object that will generate ResultSet objects with the given type and concurrency. This method is the same as the createStatement method above, but it allows the default result set type and result set concurrency type to be overridden.

Specified by:

createStatement in interface java.sql.Connection

Parameters:

resultSetType - a result set type; see ResultSet.TYPE_XXX

resultSetConcurrency - a concurrency type; see ResultSet.CONCUR_XXX

Returns:

a new Statement object

Throws:

java.sql.SQLException - if a database access error occurs

Since:

1.2

createStatement

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

Creates a Statement object that will generate ResultSet objects with the given type, concurrency, and holdability. This method is the same as the createStatement method above, but it allows the default result set type, concurrency, and holdability to be overridden.

Specified by:

createStatement in interface java.sql.Connection

Parameters:

resultSetType - one of the following ResultSet constants: ResultSet.TYPE_FORWARD_ONLY, ResultSet.TYPE_SCROLL_INSENSITIVE, or ResultSet.TYPE_SCROLL_SENSITIVE

resultSetConcurrency - one of the following ResultSet constants: ResultSet.CONCUR_READ_ONLY or ResultSet.CONCUR_UPDATABLE

resultSetHoldability - one of the following ResultSet constants: ResultSet.HOLD_CURSORS_OVER_COMMIT or ResultSet.CLOSE_CURSORS_AT_COMMIT

Returns:

a new Statement object that will generate ResultSet objects with the given type, concurrency, and holdability

Throws:

java.sql.SQLException - if a database access error occurs or the given parameters are not ResultSet constants indicating type, concurrency, and holdability

Since:

1.4

See Also:

ResultSet

createStruct

public java.sql.Struct createStruct(java.lang.String typeName,
                                    java.lang.Object[] attributes)
                             throws java.sql.SQLException

Specified by:

createStruct in interface java.sql.Connection

Parameters:

typeName -

attributes -

Returns:

Throws:

java.sql.SQLException

See Also:

Connection.createStruct(java.lang.String, java.lang.Object[])

getAcquiredAt

public java.lang.String getAcquiredAt()

Returns the stack trace from where this connection was acquired, excluding org.pajes.db classes.

Returns:

the stack trace, or an empty string if the connection is on the free pool.

getAutoCommit

public boolean getAutoCommit()
                      throws java.sql.SQLException

Gets the current auto-commit state.

Specified by:

getAutoCommit in interface java.sql.Connection

Returns:

the current state of auto-commit mode

Throws:

java.sql.SQLException - if a database access error occurs

See Also:

setAutoCommit(boolean)

getCatalog

public java.lang.String getCatalog()
                            throws java.sql.SQLException

Returns the Connection's current catalog name.

Specified by:

getCatalog in interface java.sql.Connection

Returns:

the current catalog name or null

Throws:

java.sql.SQLException - if a database access error occurs

getClientInfo

public java.util.Properties getClientInfo()
                                   throws java.sql.SQLException

Specified by:

getClientInfo in interface java.sql.Connection

Returns:

Throws:

java.sql.SQLException

See Also:

Connection.getClientInfo()

getClientInfo

public java.lang.String getClientInfo(java.lang.String name)
                               throws java.sql.SQLException

Specified by:

getClientInfo in interface java.sql.Connection

Parameters:

name -

Returns:

Throws:

java.sql.SQLException

See Also:

Connection.getClientInfo(java.lang.String)

getHoldability

public int getHoldability()
                   throws java.sql.SQLException

Retrieves the current holdability of ResultSet objects created using this Connection object.

Specified by:

getHoldability in interface java.sql.Connection

Returns:

the holdability, one of ResultSet.HOLD_CURSORS_OVER_COMMIT or ResultSet.CLOSE_CURSORS_AT_COMMIT

Throws:

java.sql.SQLException - if a database access occurs

Since:

1.4

See Also:

setHoldability(int), ResultSet

getLastUsedTime

public long getLastUsedTime()

Return the last time that this connection was used.

Returns:

the last time that this connection was used.

getMetaData

public java.sql.DatabaseMetaData getMetaData()
                                      throws java.sql.SQLException

Gets the metadata regarding this connection's database. A Connection's database is able to provide information describing its tables, its supported SQL grammar, its stored procedures, the capabilities of this connection, and so on. This information is made available through a DatabaseMetaData object.

Specified by:

getMetaData in interface java.sql.Connection

Returns:

a DatabaseMetaData object for this Connection

Throws:

java.sql.SQLException - if a database access error occurs

getOwner

public java.lang.Thread getOwner()

Gets the Thread that is the current owner of this connection.

getTransactionIsolation

public int getTransactionIsolation()
                            throws java.sql.SQLException

Gets this Connection's current transaction isolation level.

Specified by:

getTransactionIsolation in interface java.sql.Connection

Returns:

the current TRANSACTION_ mode value

Throws:

java.sql.SQLException - if a database access error occurs

getTypeMap

public java.util.Map<java.lang.String,java.lang.Class<?>> getTypeMap()
                                                              throws java.sql.SQLException

Gets the type map object associated with this connection. Unless the application has added an entry to the type map, the map returned will be empty.

Specified by:

getTypeMap in interface java.sql.Connection

Returns:

the java.util.Map object associated with this Connection object

Throws:

java.sql.SQLException - if an exception occurs accessing the database.

Since:

1.2

getUsedCount

public int getUsedCount()

Returns the number of times that this connection has been used.

Returns:

the number of times that this connection has been used.

getWarnings

public java.sql.SQLWarning getWarnings()
                                throws java.sql.SQLException

Returns the first warning reported by calls on this Connection.

Note: Subsequent warnings will be chained to this SQLWarning.

Specified by:

getWarnings in interface java.sql.Connection

Returns:

the first SQLWarning or null

Throws:

java.sql.SQLException - if a database access error occurs

isClosed

public boolean isClosed()
                 throws java.sql.SQLException

Tests to see if a Connection is closed.

Specified by:

isClosed in interface java.sql.Connection

Returns:

true if the connection is closed; false if it's still open

Throws:

java.sql.SQLException - if a database access error occurs

isReadOnly

public boolean isReadOnly()
                   throws java.sql.SQLException

Tests to see if the connection is in read-only mode.

Specified by:

isReadOnly in interface java.sql.Connection

Returns:

true if connection is read-only and false otherwise

Throws:

java.sql.SQLException - if a database access error occurs

isValid

public boolean isValid(int timeout)
                throws java.sql.SQLException

Specified by:

isValid in interface java.sql.Connection

Parameters:

timeout -

Returns:

Throws:

java.sql.SQLException

See Also:

Connection.isValid(int)

isWrapperFor

public boolean isWrapperFor(java.lang.Class<?> arg0)
                     throws java.sql.SQLException

Specified by:

isWrapperFor in interface java.sql.Wrapper

Parameters:

arg0 -

Returns:

Throws:

java.sql.SQLException

See Also:

Wrapper.isWrapperFor(java.lang.Class)

nativeSQL

public java.lang.String nativeSQL(java.lang.String sql)
                           throws java.sql.SQLException

Converts the given SQL statement into the system's native SQL grammar. A driver may convert the JDBC sql grammar into its system's native SQL grammar prior to sending it; this method returns the native form of the statement that the driver would have sent.

Specified by:

nativeSQL in interface java.sql.Connection

Parameters:

sql - a SQL statement that may contain one or more '?' parameter placeholders

Returns:

the native form of this statement

Throws:

java.sql.SQLException - if a database access error occurs

prepareCall

public java.sql.CallableStatement prepareCall(java.lang.String sql)
                                       throws java.sql.SQLException

Creates a CallableStatement object for calling database stored procedures. The CallableStatement object provides methods for setting up its IN and OUT parameters, and methods for executing the call to a stored procedure.

Note: This method is optimized for handling stored procedure call statements. Some drivers may send the call statement to the database when the method prepareCall is done; others may wait until the CallableStatement object is executed. This has no direct effect on users; however, it does affect which method throws certain SQLExceptions. Result sets created using the returned CallableStatement will have forward-only type and read-only concurrency, by default.

Specified by:

prepareCall in interface java.sql.Connection

Parameters:

sql - a SQL statement that may contain one or more '?' parameter placeholders. Typically this statement is a JDBC function call escape string.

Returns:

a new CallableStatement object containing the pre-compiled SQL statement

Throws:

java.sql.SQLException - if a database access error occurs

prepareCall

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

Creates a CallableStatement object that will generate ResultSet objects with the given type and concurrency. This method is the same as the prepareCall method above, but it allows the default result set type and result set concurrency type to be overridden.

Specified by:

prepareCall in interface java.sql.Connection

Parameters:

sql - a SQL statement that may contain one or more '?' IN parameter placeholders

resultSetType - a result set type; see ResultSet.TYPE_XXX

resultSetConcurrency - a concurrency type; see ResultSet.CONCUR_XXX

Returns:

a new CallableStatement object containing the pre-compiled SQL statement

Throws:

java.sql.SQLException - if a database access error occurs

Since:

1.2

prepareCall

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

Creates a CallableStatement object that will generate ResultSet objects with the given type and concurrency. This method is the same as the prepareCall method above, but it allows the default result set type, result set concurrency type and holdability to be overridden.

Specified by:

prepareCall in interface java.sql.Connection

Parameters:

sql - a String object that is the SQL statement to be sent to the database; may contain on or more ? parameters

resultSetType - one of the following ResultSet constants: ResultSet.TYPE_FORWARD_ONLY, ResultSet.TYPE_SCROLL_INSENSITIVE, or ResultSet.TYPE_SCROLL_SENSITIVE

resultSetConcurrency - one of the following ResultSet constants: ResultSet.CONCUR_READ_ONLY or ResultSet.CONCUR_UPDATABLE

resultSetHoldability - one of the following ResultSet constants: ResultSet.HOLD_CURSORS_OVER_COMMIT or ResultSet.CLOSE_CURSORS_AT_COMMIT

Returns:

a new CallableStatement object, containing the pre-compiled SQL statement, that will generate ResultSet objects with the given type, concurrency, and holdability

Throws:

java.sql.SQLException - if a database access error occurs or the given parameters are not ResultSet constants indicating type, concurrency, and holdability

Since:

1.4

See Also:

ResultSet

prepareStatement

public java.sql.PreparedStatement prepareStatement(java.lang.String sql)
                                            throws java.sql.SQLException

Creates a PreparedStatement object for sending parameterized SQL statements to the database. A SQL statement with or without IN parameters can be pre-compiled and stored in a PreparedStatement object. This object can then be used to efficiently execute this statement multiple times.

Note: This method is optimized for handling parametric SQL statements that benefit from precompilation. If the driver supports precompilation, the method prepareStatement will send the statement to the database for precompilation. Some drivers may not support precompilation. In this case, the statement may not be sent to the database until the PreparedStatement is executed. This has no direct effect on users; however, it does affect which method throws certain SQLExceptions. Result sets created using the returned PreparedStatement will have forward-only type and read-only concurrency, by default.

Specified by:

prepareStatement in interface java.sql.Connection

Parameters:

sql - a SQL statement that may contain one or more '?' IN parameter placeholders

Returns:

a new PreparedStatement object containing the pre-compiled statement

Throws:

java.sql.SQLException - if a database access error occurs

prepareStatement

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

Creates a default PreparedStatement object that has the capability to retrieve auto-generated keys. The given constant tells the driver whether it should make auto-generated keys available for retrieval. This parameter is ignored if the SQL statement is not an INSERT statement.

Note: This method is optimized for handling parametric SQL statements that benefit from precompilation. If the driver supports precompilation, the method prepareStatement will send the statement to the database for precompilation. Some drivers may not support precompilation. In this case, the statement may not be sent to the database until the PreparedStatement object is executed. This has no direct effect on users; however, it does affect which methods throw certain SQLExceptions.

Result sets created using the returned PreparedStatement object will by default be type TYPE_FORWARD_ONLY and have a concurrency level of CONCUR_READ_ONLY.

Specified by:

prepareStatement in interface java.sql.Connection

Parameters:

sql - an SQL statement that may contain one or more '?' IN parameter placeholders

autoGeneratedKeys - a flag indicating whether auto-generated keys should be returned; one of Statement.RETURN_GENERATED_KEYS or Statement.NO_GENERATED_KEYS

Returns:

a new PreparedStatement object, containing the pre-compiled SQL statement, that will have the capability of returning auto-generated keys

Throws:

java.sql.SQLException - if a database access error occurs or the given parameter is not a Statement constant indicating whether auto-generated keys should be returned

Since:

1.4

prepareStatement

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

Creates a PreparedStatement object that will generate ResultSet objects with the given type and concurrency. This method is the same as the prepareStatement method above, but it allows the default result set type and result set concurrency type to be overridden.

Specified by:

prepareStatement in interface java.sql.Connection

Parameters:

sql - a SQL statement that may contain one or more '?' IN parameter placeholders

resultSetType - a result set type; see ResultSet.TYPE_XXX

resultSetConcurrency - a concurrency type; see ResultSet.CONCUR_XXX

Returns:

a new PreparedStatement object containing the pre-compiled SQL statement

Throws:

java.sql.SQLException - if a database access error occurs

Since:

1.2

prepareStatement

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

Creates a PreparedStatement object that will generate ResultSet objects with the given type, concurrency, and holdability.

This method is the same as the prepareStatement method above, but it allows the default result set type, concurrency, and holdability to be overridden.

Specified by:

prepareStatement in interface java.sql.Connection

Parameters:

sql - a String object that is the SQL statement to be sent to the database; may contain one or more ? IN parameters

resultSetType - one of the following ResultSet constants: ResultSet.TYPE_FORWARD_ONLY, ResultSet.TYPE_SCROLL_INSENSITIVE, or ResultSet.TYPE_SCROLL_SENSITIVE

resultSetConcurrency - one of the following ResultSet constants: ResultSet.CONCUR_READ_ONLY or ResultSet.CONCUR_UPDATABLE

resultSetHoldability - one of the following ResultSet constants: ResultSet.HOLD_CURSORS_OVER_COMMIT or ResultSet.CLOSE_CURSORS_AT_COMMIT

Returns:

a new PreparedStatement object, containing the pre-compiled SQL statement, that will generate ResultSet objects with the given type, concurrency, and holdability

Throws:

java.sql.SQLException - if a database access error occurs or the given parameters are not ResultSet constants indicating type, concurrency, and holdability

Since:

1.4

See Also:

ResultSet

prepareStatement

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

Creates a default PreparedStatement object capable of returning the auto-generated keys designated by the given array. This array contains the indexes of the columns in the target table that contain the auto-generated keys that should be made available. This array is ignored if the SQL statement is not an INSERT statement.

An SQL statement with or without IN parameters can be pre-compiled and stored in a PreparedStatement object. This object can then be used to efficiently execute this statement multiple times.

Note: This method is optimized for handling parametric SQL statements that benefit from precompilation. If the driver supports precompilation, the method prepareStatement will send the statement to the database for precompilation. Some drivers may not support precompilation. In this case, the statement may not be sent to the database until the PreparedStatement object is executed. This has no direct effect on users; however, it does affect which methods throw certain SQLExceptions.

Result sets created using the returned PreparedStatement object will by default be type TYPE_FORWARD_ONLY and have a concurrency level of CONCUR_READ_ONLY.

Specified by:

prepareStatement in interface java.sql.Connection

Parameters:

sql - an SQL statement that may contain one or more '?' IN parameter placeholders

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

Returns:

a new PreparedStatement object, containing the pre-compiled statement, that is capable of returning the auto-generated keys designated by the given array of column indexes

Throws:

java.sql.SQLException - if a database access error occurs

Since:

1.4

prepareStatement

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

Creates a default PreparedStatement object capable of returning the auto-generated keys designated by the given array. This array contains the names of the columns in the target table that contain the auto-generated keys that should be returned. This array is ignored if the SQL statement is not an INSERT statement.

An SQL statement with or without IN parameters can be pre-compiled and stored in a PreparedStatement object. This object can then be used to efficiently execute this statement multiple times.

Note: This method is optimized for handling parametric SQL statements that benefit from precompilation. If the driver supports precompilation, the method prepareStatement will send the statement to the database for precompilation. Some drivers may not support precompilation. In this case, the statement may not be sent to the database until the PreparedStatement object is executed. This has no direct effect on users; however, it does affect which methods throw certain SQLExceptions.

Result sets created using the returned PreparedStatement object will by default be type TYPE_FORWARD_ONLY and have a concurrency level of CONCUR_READ_ONLY.

Specified by:

prepareStatement in interface java.sql.Connection

Parameters:

sql - an SQL statement that may contain one or more '?' IN parameter placeholders

columnNames - an array of column names indicating the columns that should be returned from the inserted row or rows

Returns:

a new PreparedStatement object, containing the pre-compiled statement, that is capable of returning the auto-generated keys designated by the given array of column names

Throws:

java.sql.SQLException - if a database access error occurs

Since:

1.4

releaseSavepoint

public void releaseSavepoint(java.sql.Savepoint savepoint)
                      throws java.sql.SQLException

Removes the given Savepoint object from the current transaction. Any reference to the savepoint after it have been removed will cause an SQLException to be thrown.

Specified by:

releaseSavepoint in interface java.sql.Connection

Parameters:

savepoint - the Savepoint object to be removed

Throws:

java.sql.SQLException - if a database access error occurs or the given Savepoint object is not a valid savepoint in the current transaction

Since:

1.4

rollback

public void rollback()
              throws java.sql.SQLException

Drops all changes made since the previous commit/rollback and releases any database locks currently held by this Connection. This method should be used only when auto- commit has been disabled.

Specified by:

rollback in interface java.sql.Connection

Throws:

java.sql.SQLException - if a database access error occurs

See Also:

setAutoCommit(boolean)

rollback

public void rollback(java.sql.Savepoint savepoint)
              throws java.sql.SQLException

Undoes all changes made after the given Savepoint object was set.

This method should be used only when auto-commit has been disabled.

Specified by:

rollback in interface java.sql.Connection

Parameters:

savepoint - the Savepoint object to roll back to

Throws:

java.sql.SQLException - if a database access error occurs, the Savepoint object is no longer valid, or this Connection object is currently in auto-commit mode

Since:

1.4

See Also:

Savepoint, rollback()

setAutoCommit

public void setAutoCommit(boolean autoCommit)
                   throws java.sql.SQLException

Sets this connection's auto-commit mode. If a connection is in auto-commit mode, then all its SQL statements will be executed and committed as individual transactions. Otherwise, its SQL statements are grouped into transactions that are terminated by a call to either the method commit or the method rollback. By default, new connections are in auto-commit mode. The commit occurs when the statement completes or the next execute occurs, whichever comes first. In the case of statements returning a ResultSet, the statement completes when the last row of the ResultSet has been retrieved or the ResultSet has been closed. In advanced cases, a single statement may return multiple results as well as output parameter values. In these cases the commit occurs when all results and output parameter values have been retrieved.

Specified by:

setAutoCommit in interface java.sql.Connection

Parameters:

autoCommit - true enables auto-commit; false disables auto-commit.

Throws:

java.sql.SQLException - if a database access error occurs

setCatalog

public void setCatalog(java.lang.String catalog)
                throws java.sql.SQLException

Sets a catalog name in order to select a subspace of this Connection's database in which to work. If the driver does not support catalogs, it will silently ignore this request.

Specified by:

setCatalog in interface java.sql.Connection

Parameters:

catalog - the catalog name.

Throws:

java.sql.SQLException - if a database access error occurs

setClientInfo

public void setClientInfo(java.util.Properties properties)
                   throws java.sql.SQLClientInfoException

Specified by:

setClientInfo in interface java.sql.Connection

Parameters:

properties -

Throws:

java.sql.SQLClientInfoException

See Also:

Connection.setClientInfo(java.util.Properties)

setClientInfo

public void setClientInfo(java.lang.String name,
                          java.lang.String value)
                   throws java.sql.SQLClientInfoException

Specified by:

setClientInfo in interface java.sql.Connection

Parameters:

name -

value -

Throws:

java.sql.SQLClientInfoException

See Also:

Connection.setClientInfo(java.lang.String, java.lang.String)

setHoldability

public void setHoldability(int holdability)
                    throws java.sql.SQLException

Changes the holdability of ResultSet objects created using this Connection object to the given holdability.

Specified by:

setHoldability in interface java.sql.Connection

Parameters:

holdability - a ResultSet holdability constant; one of ResultSet.HOLD_CURSORS_OVER_COMMIT or ResultSet.CLOSE_CURSORS_AT_COMMIT

Throws:

java.sql.SQLException - if a database access occurs, the given parameter is not a ResultSet constant indicating holdability, or the given holdability is not supported

Since:

1.4

See Also:

getHoldability(), ResultSet

setReadOnly

public void setReadOnly(boolean readOnly)
                 throws java.sql.SQLException

Puts this connection in read-only mode as a hint to enable database optimizations.

Note: This method cannot be called while in the middle of a transaction.

Specified by:

setReadOnly in interface java.sql.Connection

Parameters:

readOnly - true enables read-only mode; false disables read-only mode.

Throws:

java.sql.SQLException - if a database access error occurs

setSavepoint

public java.sql.Savepoint setSavepoint()
                                throws java.sql.SQLException

Creates an unnamed savepoint in the current transaction and returns the new Savepoint object that represents it.

Specified by:

setSavepoint in interface java.sql.Connection

Returns:

the new Savepoint object

Throws:

java.sql.SQLException - if a database access error occurs or this Connection object is currently in auto-commit mode

Since:

1.4

See Also:

Savepoint

setSavepoint

public java.sql.Savepoint setSavepoint(java.lang.String name)
                                throws java.sql.SQLException

Creates a savepoint with the given name in the current transaction and returns the new Savepoint object that represents it.

Specified by:

setSavepoint in interface java.sql.Connection

Parameters:

name - a String containing the name of the savepoint

Returns:

the new Savepoint object

Throws:

java.sql.SQLException - if a database access error occurs or this Connection object is currently in auto-commit mode

Since:

1.4

See Also:

Savepoint

setTransactionIsolation

public void setTransactionIsolation(int level)
                             throws java.sql.SQLException

Attempts to change the transaction isolation level to the one given. The constants defined in the interface Connection are the possible transaction isolation levels.

Note: This method cannot be called while in the middle of a transaction.

Specified by:

setTransactionIsolation in interface java.sql.Connection

Parameters:

level - one of the TRANSACTION_ isolation values with the exception of TRANSACTION_NONE; some databases may not support other values

Throws:

java.sql.SQLException - if a database access error occurs

See Also:

DatabaseMetaData.supportsTransactionIsolationLevel(int)

setTypeMap

public void setTypeMap(java.util.Map<java.lang.String,java.lang.Class<?>> map)
                throws java.sql.SQLException

Installs the given type map as the type map for this connection. The type map will be used for the custom mapping of SQL structured types and distinct types.

Specified by:

setTypeMap in interface java.sql.Connection

Parameters:

map - the java.util.Map object to install as the replacement for this Connection object's default type map

Throws:

java.sql.SQLException - if an exception occurs accessing the database.

Since:

1.2

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object

See Also:

Object.toString()

unwrap

public <T> T unwrap(java.lang.Class<T> iface)
         throws java.sql.SQLException

Specified by:

unwrap in interface java.sql.Wrapper

Throws:

java.sql.SQLException

See Also:

Wrapper.unwrap(java.lang.Class)