Package org.apache.ibatis.session.defaults

Class DefaultSqlSession

java.lang.Object

org.apache.ibatis.session.defaults.DefaultSqlSession

All Implemented Interfaces:

Closeable, AutoCloseable, SqlSession

public class DefaultSqlSession
extends Object
implements SqlSession

The default implementation for SqlSession. Note that this class is not Thread-Safe.

Author:

Clinton Begin

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	DefaultSqlSession.StrictMap<V>	Deprecated. Since 3.5.5

Constructor Summary

Constructors

Constructor	Description
DefaultSqlSession(Configuration configuration, Executor executor)
DefaultSqlSession(Configuration configuration, Executor executor, boolean autoCommit)

Method Summary

Modifier and Type	Method	Description
void	clearCache()	Clears local session cache.
void	close()	Closes the session.
void	commit()	Flushes batch statements and commits database connection.
void	commit(boolean force)	Flushes batch statements and commits database connection.
int	delete(String statement)	Execute a delete statement.
int	delete(String statement, Object parameter)	Execute a delete statement.
List<BatchResult>	flushStatements()	Flushes batch statements.
Configuration	getConfiguration()	Retrieves current configuration.
Connection	getConnection()	Retrieves inner database connection.
<T> T	getMapper(Class<T> type)	Retrieves a mapper.
int	insert(String statement)	Execute an insert statement.
int	insert(String statement, Object parameter)	Execute an insert statement with the given parameter object.
void	rollback()	Discards pending batch statements and rolls database connection back.
void	rollback(boolean force)	Discards pending batch statements and rolls database connection back.
void	select(String statement, Object parameter, ResultHandler handler)	Retrieve a single row mapped from the statement key and parameter using a ResultHandler.
void	select(String statement, Object parameter, RowBounds rowBounds, ResultHandler handler)	Retrieve a single row mapped from the statement key and parameter using a ResultHandler and RowBounds.
void	select(String statement, ResultHandler handler)	Retrieve a single row mapped from the statement using a ResultHandler.
<T> Cursor<T>	selectCursor(String statement)	A Cursor offers the same results as a List, except it fetches data lazily using an Iterator.
<T> Cursor<T>	selectCursor(String statement, Object parameter)	A Cursor offers the same results as a List, except it fetches data lazily using an Iterator.
<T> Cursor<T>	selectCursor(String statement, Object parameter, RowBounds rowBounds)	A Cursor offers the same results as a List, except it fetches data lazily using an Iterator.
<E> List<E>	selectList(String statement)	Retrieve a list of mapped objects from the statement key.
<E> List<E>	selectList(String statement, Object parameter)	Retrieve a list of mapped objects from the statement key and parameter.
<E> List<E>	selectList(String statement, Object parameter, RowBounds rowBounds)	Retrieve a list of mapped objects from the statement key and parameter, within the specified row bounds.
<K, V> Map<K,V>	selectMap(String statement, Object parameter, String mapKey)	The selectMap is a special case in that it is designed to convert a list of results into a Map based on one of the properties in the resulting objects.
<K, V> Map<K,V>	selectMap(String statement, Object parameter, String mapKey, RowBounds rowBounds)	The selectMap is a special case in that it is designed to convert a list of results into a Map based on one of the properties in the resulting objects.
<K, V> Map<K,V>	selectMap(String statement, String mapKey)	The selectMap is a special case in that it is designed to convert a list of results into a Map based on one of the properties in the resulting objects.
<T> T	selectOne(String statement)	Retrieve a single row mapped from the statement key.
<T> T	selectOne(String statement, Object parameter)	Retrieve a single row mapped from the statement key and parameter.
int	update(String statement)	Execute an update statement.
int	update(String statement, Object parameter)	Execute an update statement.

Methods inherited from class java.lang.Object

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

Constructor Details

DefaultSqlSession

public DefaultSqlSession(Configuration configuration,
 Executor executor,
 boolean autoCommit)

DefaultSqlSession

public DefaultSqlSession(Configuration configuration,
 Executor executor)

Method Details

selectOne

public <T> T selectOne(String statement)

Description copied from interface: SqlSession

Retrieve a single row mapped from the statement key.

Specified by:

selectOne in interface SqlSession

Type Parameters:

T - the returned object type

Parameters:

statement - the statement

Returns:

Mapped object

selectOne

public <T> T selectOne(String statement,
 Object parameter)

Description copied from interface: SqlSession

Retrieve a single row mapped from the statement key and parameter.

Specified by:

selectOne in interface SqlSession

Type Parameters:

T - the returned object type

Parameters:

statement - Unique identifier matching the statement to use.

parameter - A parameter object to pass to the statement.

Returns:

Mapped object

selectMap

public <K,
V> Map<K,V> selectMap(String statement,
 String mapKey)

Description copied from interface: SqlSession

The selectMap is a special case in that it is designed to convert a list of results into a Map based on one of the properties in the resulting objects. Eg. Return a of Map[Integer,Author] for selectMap("selectAuthors","id")

Specified by:

selectMap in interface SqlSession

Type Parameters:

K - the returned Map keys type

V - the returned Map values type

Parameters:

statement - Unique identifier matching the statement to use.

mapKey - The property to use as key for each value in the list.

Returns:

Map containing key pair data.

selectMap

public <K,
V> Map<K,V> selectMap(String statement,
 Object parameter,
 String mapKey)

Description copied from interface: SqlSession

The selectMap is a special case in that it is designed to convert a list of results into a Map based on one of the properties in the resulting objects.

Specified by:

selectMap in interface SqlSession

Type Parameters:

K - the returned Map keys type

V - the returned Map values type

Parameters:

statement - Unique identifier matching the statement to use.

parameter - A parameter object to pass to the statement.

mapKey - The property to use as key for each value in the list.

Returns:

Map containing key pair data.

selectMap

public <K,
V> Map<K,V> selectMap(String statement,
 Object parameter,
 String mapKey,
 RowBounds rowBounds)

Description copied from interface: SqlSession

The selectMap is a special case in that it is designed to convert a list of results into a Map based on one of the properties in the resulting objects.

Specified by:

selectMap in interface SqlSession

Type Parameters:

K - the returned Map keys type

V - the returned Map values type

Parameters:

statement - Unique identifier matching the statement to use.

parameter - A parameter object to pass to the statement.

mapKey - The property to use as key for each value in the list.

rowBounds - Bounds to limit object retrieval

Returns:

Map containing key pair data.

selectCursor

public <T> Cursor<T> selectCursor(String statement)

Description copied from interface: SqlSession

A Cursor offers the same results as a List, except it fetches data lazily using an Iterator.

Specified by:

selectCursor in interface SqlSession

Type Parameters:

T - the returned cursor element type.

Parameters:

statement - Unique identifier matching the statement to use.

Returns:

Cursor of mapped objects

selectCursor

public <T> Cursor<T> selectCursor(String statement,
 Object parameter)

Description copied from interface: SqlSession

A Cursor offers the same results as a List, except it fetches data lazily using an Iterator.

Specified by:

selectCursor in interface SqlSession

Type Parameters:

T - the returned cursor element type.

Parameters:

statement - Unique identifier matching the statement to use.

parameter - A parameter object to pass to the statement.

Returns:

Cursor of mapped objects

selectCursor

public <T> Cursor<T> selectCursor(String statement,
 Object parameter,
 RowBounds rowBounds)

Description copied from interface: SqlSession

A Cursor offers the same results as a List, except it fetches data lazily using an Iterator.

Specified by:

selectCursor in interface SqlSession

Type Parameters:

T - the returned cursor element type.

Parameters:

statement - Unique identifier matching the statement to use.

parameter - A parameter object to pass to the statement.

rowBounds - Bounds to limit object retrieval

Returns:

Cursor of mapped objects

selectList

public <E> List<E> selectList(String statement)

Description copied from interface: SqlSession

Retrieve a list of mapped objects from the statement key.

Specified by:

selectList in interface SqlSession

Type Parameters:

E - the returned list element type

Parameters:

statement - Unique identifier matching the statement to use.

Returns:

List of mapped object

selectList

public <E> List<E> selectList(String statement,
 Object parameter)

Description copied from interface: SqlSession

Retrieve a list of mapped objects from the statement key and parameter.

Specified by:

selectList in interface SqlSession

Type Parameters:

E - the returned list element type

Parameters:

statement - Unique identifier matching the statement to use.

parameter - A parameter object to pass to the statement.

Returns:

List of mapped object

selectList

public <E> List<E> selectList(String statement,
 Object parameter,
 RowBounds rowBounds)

Description copied from interface: SqlSession

Retrieve a list of mapped objects from the statement key and parameter, within the specified row bounds.

Specified by:

selectList in interface SqlSession

Type Parameters:

E - the returned list element type

Parameters:

statement - Unique identifier matching the statement to use.

parameter - A parameter object to pass to the statement.

rowBounds - Bounds to limit object retrieval

Returns:

List of mapped object

select

public void select(String statement,
 Object parameter,
 ResultHandler handler)

Description copied from interface: SqlSession

Retrieve a single row mapped from the statement key and parameter using a ResultHandler.

Specified by:

select in interface SqlSession

Parameters:

statement - Unique identifier matching the statement to use.

parameter - A parameter object to pass to the statement.

handler - ResultHandler that will handle each retrieved row

select

public void select(String statement,
 ResultHandler handler)

Description copied from interface: SqlSession

Retrieve a single row mapped from the statement using a ResultHandler.

Specified by:

select in interface SqlSession

Parameters:

statement - Unique identifier matching the statement to use.

handler - ResultHandler that will handle each retrieved row

select

public void select(String statement,
 Object parameter,
 RowBounds rowBounds,
 ResultHandler handler)

Description copied from interface: SqlSession

Retrieve a single row mapped from the statement key and parameter using a ResultHandler and RowBounds.

Specified by:

select in interface SqlSession

Parameters:

statement - Unique identifier matching the statement to use.

parameter - the parameter

rowBounds - RowBound instance to limit the query results

handler - ResultHandler that will handle each retrieved row

insert

public int insert(String statement)

Description copied from interface: SqlSession

Execute an insert statement.

Specified by:

insert in interface SqlSession

Parameters:

statement - Unique identifier matching the statement to execute.

Returns:

int The number of rows affected by the insert.

insert

public int insert(String statement,
 Object parameter)

Description copied from interface: SqlSession

Execute an insert statement with the given parameter object. Any generated autoincrement values or selectKey entries will modify the given parameter object properties. Only the number of rows affected will be returned.

Specified by:

insert in interface SqlSession

Parameters:

statement - Unique identifier matching the statement to execute.

parameter - A parameter object to pass to the statement.

Returns:

int The number of rows affected by the insert.

update

public int update(String statement)

Description copied from interface: SqlSession

Execute an update statement. The number of rows affected will be returned.

Specified by:

update in interface SqlSession

Parameters:

statement - Unique identifier matching the statement to execute.

Returns:

int The number of rows affected by the update.

update

public int update(String statement,
 Object parameter)

Description copied from interface: SqlSession

Execute an update statement. The number of rows affected will be returned.

Specified by:

update in interface SqlSession

Parameters:

statement - Unique identifier matching the statement to execute.

parameter - A parameter object to pass to the statement.

Returns:

int The number of rows affected by the update.

delete

public int delete(String statement)

Description copied from interface: SqlSession

Execute a delete statement. The number of rows affected will be returned.

Specified by:

delete in interface SqlSession

Parameters:

statement - Unique identifier matching the statement to execute.

Returns:

int The number of rows affected by the delete.

delete

public int delete(String statement,
 Object parameter)

Description copied from interface: SqlSession

Execute a delete statement. The number of rows affected will be returned.

Specified by:

delete in interface SqlSession

Parameters:

statement - Unique identifier matching the statement to execute.

parameter - A parameter object to pass to the statement.

Returns:

int The number of rows affected by the delete.

commit

public void commit()

Description copied from interface: SqlSession

Flushes batch statements and commits database connection. Note that database connection will not be committed if no updates/deletes/inserts were called. To force the commit call SqlSession.commit(boolean)

Specified by:

commit in interface SqlSession

commit

public void commit(boolean force)

Description copied from interface: SqlSession

Flushes batch statements and commits database connection.

Specified by:

commit in interface SqlSession

Parameters:

force - forces connection commit

rollback

public void rollback()

Description copied from interface: SqlSession

Discards pending batch statements and rolls database connection back. Note that database connection will not be rolled back if no updates/deletes/inserts were called. To force the rollback call SqlSession.rollback(boolean)

Specified by:

rollback in interface SqlSession

rollback

public void rollback(boolean force)

Description copied from interface: SqlSession

Discards pending batch statements and rolls database connection back. Note that database connection will not be rolled back if no updates/deletes/inserts were called.

Specified by:

rollback in interface SqlSession

Parameters:

force - forces connection rollback

flushStatements

public List<BatchResult> flushStatements()

Description copied from interface: SqlSession

Flushes batch statements.

Specified by:

flushStatements in interface SqlSession

Returns:

BatchResult list of updated records

close

public void close()

Description copied from interface: SqlSession

Closes the session.

Specified by:

close in interface AutoCloseable

Specified by:

close in interface Closeable

Specified by:

close in interface SqlSession

getConfiguration

public Configuration getConfiguration()

Description copied from interface: SqlSession

Retrieves current configuration.

Specified by:

getConfiguration in interface SqlSession

Returns:

Configuration

getMapper

public <T> T getMapper(Class<T> type)

Description copied from interface: SqlSession

Retrieves a mapper.

Specified by:

getMapper in interface SqlSession

Type Parameters:

T - the mapper type

Parameters:

type - Mapper interface class

Returns:

a mapper bound to this SqlSession

getConnection

public Connection getConnection()

Description copied from interface: SqlSession

Retrieves inner database connection.

Specified by:

getConnection in interface SqlSession

Returns:

Connection

clearCache

public void clearCache()

Description copied from interface: SqlSession

Clears local session cache.

Specified by:

clearCache in interface SqlSession