xref: /aoo42x/main/offapi/com/sun/star/sdbc/XConnection.idl (revision d1766043)

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#ifndef __com_sun_star_sdbc_XConnection_idl__
#define __com_sun_star_sdbc_XConnection_idl__

#ifndef __com_sun_star_uno_XInterface_idl__
#include <com/sun/star/uno/XInterface.idl>
#endif

 module com {  module sun {  module star {  module container {
 published interface XNameAccess;
};};};};

#ifndef __com_sun_star_sdbc_SQLException_idl__
#include <com/sun/star/sdbc/SQLException.idl>
#endif

#ifndef __com_sun_star_sdbc_XCloseable_idl__
#include <com/sun/star/sdbc/XCloseable.idl>
#endif

 module com {  module sun {  module star {  module sdbc {

 published interface XStatement;
 published interface XPreparedStatement;
 published interface XDatabaseMetaData;


/** represents a connection (session) with a specific
	database. Within the context of a Connection, SQL statements are
	executed and results are returned.


	<p>
	A Connection's database is able to provide information
	describing its tables, its supported SQL grammar, its stored
	procedures, and the capabilities of this connection. This
	information is obtained with the
	<member scope="com::sun::star::sdbc">XDatabaseMetaData::getMetaData()</member>
	method.

	</p>
	@see com::sun::star::sdbc::XDriverManager
	@see com::sun::star::sdbc::XStatement
	@see com::sun::star::sdbc::XDatabaseMetaData
 */
published interface XConnection: com::sun::star::sdbc::XCloseable
{

	/** creates a new
		<type scope="com::sun::star::sdbc">Statement</type>
		object for sending SQL statements to the database.


		<p>
		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
		<type scope="com::sun::star::sdbc">PreparedStatement</type>
		.
		</p>
		<p>
		Result sets created using the returned Statement will have
		forward-only type, and read-only concurrency, by default.
		</p>
		<p>
		Escape processing for the SQL-Statement is enabled, by default.
		</p>

		@returns
			a new Statement object
		@throws SQLException
			if a database access error occurs.
	 */
	XStatement createStatement() raises (SQLException);
	//-------------------------------------------------------------------------

	/** creates a
		<type scope="com::sun::star::sdbc">PreparedStatement</type>
		object for sending parameterized SQL statements to the database.


		<p>
		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.

		</p>
		<p>
		<b>
		Note:
		</b>
		This method is optimized for handling
		parametric SQL statements that benefit from precompilation. If
		the driver supports precompilation,
		the method
		<code>prepareStatement</code>
		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
		<type scope="com::sun::star::sdbc">PreparedStatement</type>
		is executed.  This has no direct effect on users; however, it does
		affect which method throws certain SQLExceptions.
		</p>
		<p>
		Result sets created using the returned PreparedStatement will have
		forward-only type and read-only concurrency, by default.
		</p>
		<p>
		Escape processing for the SQL-Statement is enabled, by default.
		</p>

		@param sql
			a SQL statement that may contain one or more '?' IN parameter placeholders
		@returns
			a new PreparedStatement object containing the pre-compiled statement
		@throws SQLException
			if a database access error occurs.
	 */
	XPreparedStatement prepareStatement([in]string sql) raises (SQLException);
    //-------------------------------------------------------------------------

	/** creates a
		<type scope="com::sun::star::sdbc">CallableStatement</type>
		object for calling
		database stored procedures.


		<p>
		The CallableStatement provides methods for setting up its IN and OUT
		parameters, and methods for executing the call to a stored procedure.
		</p>
		<p>
		<b>
		Note:
		</b>
		This method is optimized for handling stored
		procedure call statements. Some drivers may send the call
		statement to the database when the method
		<code>prepareCall</code>
		is done;
		<br/>
		others may wait until the CallableStatement 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.
		</p>

		@param sql
			a SQL statement that may contain one or more '?' IN parameter placeholders
		@returns
			a new PreparedStatement object containing the pre-compiled statement
		@throws SQLException
			if a database access error occurs.
	 */
	XPreparedStatement prepareCall([in]string sql) raises (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.

		@param sql
			a SQL statement that may contain one or more '?' parameter placeholders
		@returns
			the native form of this statement
		@throws SQLException
			if a database access error occurs.
	 */
	string nativeSQL([in]string sql) raises (SQLException);
    //-------------------------------------------------------------------------

	/** sets this connection's auto-commit mode.


		<p>
		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
		<member scope="com::sun::star::sdbc">XConnection::commit()</member>
		or the method
		<member scope="com::sun::star::sdbc">XConnection::rollback()</member>
		.
		By default, new connections are in auto-commit mode.
		</p>
		<p>
		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.
		</p>

		@param autoCommit
			<TRUE/> enables auto-commit; <FALSE/> disables auto-commit.
		@throws SQLException
			if a database access error occurs.
	 */
	void setAutoCommit([in] boolean autoCommit) raises (SQLException);
    //-------------------------------------------------------------------------

	/** gets the current auto-commit state.

		@returns
			the current state of auto-commit mode.
		@throws SQLException
			if a database access error occurs.

		@see setAutoCommit
	 */
	boolean getAutoCommit() raises (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.

		@throws SQLException
			if a database access error occurs.

		@see setAutoCommit
	 */
	void commit() raises (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.

		@throws SQLException
			if a database access error occurs.

		@see setAutoCommit
	 */
	void rollback() raises (SQLException);
    //-------------------------------------------------------------------------

	/** tests to see if a connection is closed.


		<p>
		<b>
		Note:
		</b>
		A Connection is automatically closed if no one references it
		anymore. Certain fatal errors also result in a closed Connection.
		</p>

		@returns
			<TRUE/> if the connection is closed; <FALSE/> if it's still open.
		@throws SQLException
			if a database access error occurs.
	 */
	boolean isClosed() raises (SQLException);
	//-------------------------------------------------------------------------

	/** gets the metadata regarding this connection's database.


		<p>
		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.
		</p>

		@returns
			a DatabaseMetaData object for this Connection.
		@throws SQLException
			if a database access error occurs.
	 */
	XDatabaseMetaData getMetaData() raises (SQLException);
    //-------------------------------------------------------------------------

	/** puts this connection in read-only mode as a hint to enable
		database optimizations.


		<p>
		<b>
		Note:
		</b>
		This method cannot be called while in the
		middle of a transaction. Calling setReadOnly with
		<TRUE/>
		does not
		necessarily cause writes to be prohibited.
		</p>

		@param readONly
			<TRUE/> enables read-only mode; <FALSE/> disables read-only mode.
		@throws SQLException
			if a database access error occurs.
	 */
	void setReadOnly([in]boolean readOnly) raises (SQLException);
    //-------------------------------------------------------------------------

	/** tests to see if the connection is in read-only mode.
		@returns
			<TRUE/> if connection is read-only and <FALSE/> otherwise.
		@throws SQLException
			if a database access error occurs.
	 */
	boolean isReadOnly() raises (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.
		@param catalog
			the name of the catalog.
		@throws SQLException
			if a database access error occurs.
	 */
	void setCatalog([in]string catalog) raises (SQLException);
    //-------------------------------------------------------------------------

	/** returns the Connection's current catalog name.
		@returns
			the current catalog name or an empty string.
		@throws SQLException
			if a database access error occurs.
	 */
	string getCatalog() raises (SQLException);
	//-------------------------------------------------------------------------

	/** attempts to change the transaction isolation level to the one given.


		<p>
		The constants defined in
		<type scope="com::sun::star::sdbc">TransactionIsolation</type>
		are the possible transaction isolation levels.
		</p>
		<p>
		<b>
		Note:
		</b>
		This method cannot be called while
		in the middle of a transaction.
		</p>
		@param level
			one of the TransactionIsolation values with the exception of NONE; some databases may not support other values.
		@throws SQLException
			if a database access error occurs.

		@see com::sun::star::sdbc::XDatabaseMetaData::supportsTransactionIsolationLevel()
	 */
	void setTransactionIsolation([in]long level) raises (SQLException);
    //-------------------------------------------------------------------------

	/** gets this Connection's current transaction isolation level.
		@returns
			the current TransactionIsolation mode value.
		@throws SQLException
			if a database access error occurs.
	 */
	long getTransactionIsolation() raises (SQLException);
	//-------------------------------------------------------------------------

	/** gets the type map object associated with this connection. Only drivers
		which implement the custom type mapping facility will return an object otherwise
		NULL could be returned.

		<p>
		Unless the application has added an entry to the type map, the map
		returned will be empty.
		</p>
		@returns
		    the XNameAccess object associated with this Connection object.

		@throws SQLException
			if a database access error occurs.
	 */
	com::sun::star::container::XNameAccess getTypeMap() raises (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.


		<p>
		Only if the driver supports custom type mapping is the setting of a map allowed.
		</p>

		@param typeMap
			set the XNameAccess object associated with this Connection object.
		@throws SQLException
			if a database access error occurs.
	 */
	void setTypeMap([in]com::sun::star::container::XNameAccess typeMap)
		raises (SQLException);
};

//=============================================================================

}; }; }; };

/*===========================================================================
===========================================================================*/
#endif