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com.ibatis.sqlmap.engine.impl
Class SqlMapSessionImpl  view SqlMapSessionImpl download SqlMapSessionImpl.java

java.lang.Object
  extended bycom.ibatis.sqlmap.engine.impl.SqlMapSessionImpl
All Implemented Interfaces:
com.ibatis.sqlmap.client.SqlMapExecutor, com.ibatis.sqlmap.client.SqlMapSession, com.ibatis.sqlmap.client.SqlMapTransactionManager

public class SqlMapSessionImpl
extends java.lang.Object
implements com.ibatis.sqlmap.client.SqlMapSession

Implementation of SqlMapSession


Field Summary
protected  boolean closed
           
protected  SqlMapExecutorDelegate delegate
           
private static org.apache.commons.logging.Log log
           
protected  com.ibatis.sqlmap.engine.scope.SessionScope session
           
 
Constructor Summary
SqlMapSessionImpl(ExtendedSqlMapClient client)
          Constructor
 
Method Summary
 void close()
          Closes the session
 void commitTransaction()
          Commits the currently started transaction.
 int delete(java.lang.String id, java.lang.Object param)
          Executes a mapped SQL DELETE statement.
 void endTransaction()
          Ends a transaction and rolls back if necessary.
 int executeBatch()
          Executes (flushes) all statements currently batched.
 java.sql.Connection getCurrentConnection()
          Returns the current connection in use.
 javax.sql.DataSource getDataSource()
          Returns the DataSource instance currently being used by the SqlMapSession.
 SqlMapExecutorDelegate getDelegate()
          Get the delegate
 com.ibatis.sqlmap.engine.mapping.statement.MappedStatement getMappedStatement(java.lang.String id)
          Gets a mapped statement by ID
 com.ibatis.sqlmap.engine.execution.SqlExecutor getSqlExecutor()
          Get the SQL executor
 java.sql.Connection getUserConnection()
          Deprecated.  
 java.lang.Object insert(java.lang.String id, java.lang.Object param)
          Executes a mapped SQL INSERT statement.
 boolean isClosed()
          Getter to tell if the session is still open
 boolean isEnhancementEnabled()
          Get the status of CGLib enhancements
 boolean isLazyLoadingEnabled()
          Get the status of lazy loading
 void open()
          Start the session
 java.util.List queryForList(java.lang.String id, java.lang.Object paramObject)
          Executes a mapped SQL SELECT statement that returns data to populate a number of result objects.
 java.util.List queryForList(java.lang.String id, java.lang.Object paramObject, int skip, int max)
          Executes a mapped SQL SELECT statement that returns data to populate a number of result objects within a certain range.
 java.util.Map queryForMap(java.lang.String id, java.lang.Object paramObject, java.lang.String keyProp)
          Executes a mapped SQL SELECT statement that returns data to populate a number of result objects that will be keyed into a Map.
 java.util.Map queryForMap(java.lang.String id, java.lang.Object paramObject, java.lang.String keyProp, java.lang.String valueProp)
          Executes a mapped SQL SELECT statement that returns data to populate a number of result objects from which one property will be keyed into a Map.
 java.lang.Object queryForObject(java.lang.String id, java.lang.Object paramObject)
          Executes a mapped SQL SELECT statement that returns data to populate a single object instance.
 java.lang.Object queryForObject(java.lang.String id, java.lang.Object paramObject, java.lang.Object resultObject)
          Executes a mapped SQL SELECT statement that returns data to populate the supplied result object.
 com.ibatis.common.util.PaginatedList queryForPaginatedList(java.lang.String id, java.lang.Object paramObject, int pageSize)
          Executes a mapped SQL SELECT statement that returns data to populate a number of result objects a page at a time.
 void queryWithRowHandler(java.lang.String id, java.lang.Object paramObject, com.ibatis.sqlmap.client.event.RowHandler rowHandler)
          Executes a mapped SQL SELECT statement that returns a number of result objects that will be handled one at a time by a RowHandler.
 void setUserConnection(java.sql.Connection connection)
          Allows the developer to easily use an externally supplied connection when executing statements.
 void startBatch()
          Starts a batch in which update statements will be cached before being sent to the database all at once.
 void startTransaction()
          Demarcates the beginning of a transaction scope.
 void startTransaction(int transactionIsolation)
          Demarcates the beginning of a transaction scope using the specified transaction isolation.
 int update(java.lang.String id, java.lang.Object param)
          Executes a mapped SQL UPDATE statement.
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 

Field Detail

log

private static final org.apache.commons.logging.Log log

delegate

protected SqlMapExecutorDelegate delegate

session

protected com.ibatis.sqlmap.engine.scope.SessionScope session

closed

protected boolean closed
Constructor Detail

SqlMapSessionImpl

public SqlMapSessionImpl(ExtendedSqlMapClient client)
Constructor

Method Detail

open

public void open()
Start the session


isClosed

public boolean isClosed()
Getter to tell if the session is still open


close

public void close()
Description copied from interface: com.ibatis.sqlmap.client.SqlMapSession
Closes the session

Specified by:
close in interface com.ibatis.sqlmap.client.SqlMapSession

insert

public java.lang.Object insert(java.lang.String id,
                               java.lang.Object param)
                        throws java.sql.SQLException
Description copied from interface: com.ibatis.sqlmap.client.SqlMapExecutor
Executes a mapped SQL INSERT statement. Insert is a bit different from other update methods, as it provides facilities for returning the primary key of the newly inserted row (rather than the effected rows). This functionality is of course optional.

The parameter object is generally used to supply the input data for the INSERT values.

Specified by:
insert in interface com.ibatis.sqlmap.client.SqlMapExecutor

update

public int update(java.lang.String id,
                  java.lang.Object param)
           throws java.sql.SQLException
Description copied from interface: com.ibatis.sqlmap.client.SqlMapExecutor
Executes a mapped SQL UPDATE statement. Update can also be used for any other update statement type, such as inserts and deletes. Update returns the number of rows effected.

The parameter object is generally used to supply the input data for the UPDATE values as well as the WHERE clause parameter(s).

Specified by:
update in interface com.ibatis.sqlmap.client.SqlMapExecutor

delete

public int delete(java.lang.String id,
                  java.lang.Object param)
           throws java.sql.SQLException
Description copied from interface: com.ibatis.sqlmap.client.SqlMapExecutor
Executes a mapped SQL DELETE statement. Delete returns the number of rows effected.

The parameter object is generally used to supply the input data for the WHERE clause parameter(s) of the DELETE statement.

Specified by:
delete in interface com.ibatis.sqlmap.client.SqlMapExecutor

queryForObject

public java.lang.Object queryForObject(java.lang.String id,
                                       java.lang.Object paramObject)
                                throws java.sql.SQLException
Description copied from interface: com.ibatis.sqlmap.client.SqlMapExecutor
Executes a mapped SQL SELECT statement that returns data to populate a single object instance.

The parameter object is generally used to supply the input data for the WHERE clause parameter(s) of the SELECT statement.

Specified by:
queryForObject in interface com.ibatis.sqlmap.client.SqlMapExecutor

queryForObject

public java.lang.Object queryForObject(java.lang.String id,
                                       java.lang.Object paramObject,
                                       java.lang.Object resultObject)
                                throws java.sql.SQLException
Description copied from interface: com.ibatis.sqlmap.client.SqlMapExecutor
Executes a mapped SQL SELECT statement that returns data to populate the supplied result object.

The parameter object is generally used to supply the input data for the WHERE clause parameter(s) of the SELECT statement.

Specified by:
queryForObject in interface com.ibatis.sqlmap.client.SqlMapExecutor

queryForList

public java.util.List queryForList(java.lang.String id,
                                   java.lang.Object paramObject)
                            throws java.sql.SQLException
Description copied from interface: com.ibatis.sqlmap.client.SqlMapExecutor
Executes a mapped SQL SELECT statement that returns data to populate a number of result objects.

The parameter object is generally used to supply the input data for the WHERE clause parameter(s) of the SELECT statement.

Specified by:
queryForList in interface com.ibatis.sqlmap.client.SqlMapExecutor

queryForList

public java.util.List queryForList(java.lang.String id,
                                   java.lang.Object paramObject,
                                   int skip,
                                   int max)
                            throws java.sql.SQLException
Description copied from interface: com.ibatis.sqlmap.client.SqlMapExecutor
Executes a mapped SQL SELECT statement that returns data to populate a number of result objects within a certain range.

The parameter object is generally used to supply the input data for the WHERE clause parameter(s) of the SELECT statement.

Specified by:
queryForList in interface com.ibatis.sqlmap.client.SqlMapExecutor

queryForPaginatedList

public com.ibatis.common.util.PaginatedList queryForPaginatedList(java.lang.String id,
                                                                  java.lang.Object paramObject,
                                                                  int pageSize)
                                                           throws java.sql.SQLException
Description copied from interface: com.ibatis.sqlmap.client.SqlMapExecutor
Executes a mapped SQL SELECT statement that returns data to populate a number of result objects a page at a time.

The parameter object is generally used to supply the input data for the WHERE clause parameter(s) of the SELECT statement.

Specified by:
queryForPaginatedList in interface com.ibatis.sqlmap.client.SqlMapExecutor

queryForMap

public java.util.Map queryForMap(java.lang.String id,
                                 java.lang.Object paramObject,
                                 java.lang.String keyProp)
                          throws java.sql.SQLException
Description copied from interface: com.ibatis.sqlmap.client.SqlMapExecutor
Executes a mapped SQL SELECT statement that returns data to populate a number of result objects that will be keyed into a Map.

The parameter object is generally used to supply the input data for the WHERE clause parameter(s) of the SELECT statement.

Specified by:
queryForMap in interface com.ibatis.sqlmap.client.SqlMapExecutor

queryForMap

public java.util.Map queryForMap(java.lang.String id,
                                 java.lang.Object paramObject,
                                 java.lang.String keyProp,
                                 java.lang.String valueProp)
                          throws java.sql.SQLException
Description copied from interface: com.ibatis.sqlmap.client.SqlMapExecutor
Executes a mapped SQL SELECT statement that returns data to populate a number of result objects from which one property will be keyed into a Map.

The parameter object is generally used to supply the input data for the WHERE clause parameter(s) of the SELECT statement.

Specified by:
queryForMap in interface com.ibatis.sqlmap.client.SqlMapExecutor

queryWithRowHandler

public void queryWithRowHandler(java.lang.String id,
                                java.lang.Object paramObject,
                                com.ibatis.sqlmap.client.event.RowHandler rowHandler)
                         throws java.sql.SQLException
Description copied from interface: com.ibatis.sqlmap.client.SqlMapExecutor
Executes a mapped SQL SELECT statement that returns a number of result objects that will be handled one at a time by a RowHandler.

This is generally a good approach to take when dealing with large sets of records (i.e. hundreds, thousands...) that need to be processed without eating up all of the system resources.

The parameter object is generally used to supply the input data for the WHERE clause parameter(s) of the SELECT statement.

Specified by:
queryWithRowHandler in interface com.ibatis.sqlmap.client.SqlMapExecutor

startTransaction

public void startTransaction()
                      throws java.sql.SQLException
Description copied from interface: com.ibatis.sqlmap.client.SqlMapTransactionManager
Demarcates the beginning of a transaction scope. Transactions must be properly committed or rolled back to be effective. Use the following pattern when working with transactions:
 try {
   sqlMap.startTransaction();
   // do work
   sqlMap.commitTransaction();
 } finally {
   sqlMap.endTransaction();
 }
 

Always call endTransaction() once startTransaction() has been called.

Specified by:
startTransaction in interface com.ibatis.sqlmap.client.SqlMapTransactionManager

startTransaction

public void startTransaction(int transactionIsolation)
                      throws java.sql.SQLException
Description copied from interface: com.ibatis.sqlmap.client.SqlMapTransactionManager
Demarcates the beginning of a transaction scope using the specified transaction isolation. Transactions must be properly committed or rolled back to be effective. Use the following pattern when working with transactions:
 try {
   sqlMap.startTransaction(Connection.TRANSACTION_REPEATABLE_READ);
   // do work
   sqlMap.commitTransaction();
 } finally {
   sqlMap.endTransaction();
 }
 

Always call endTransaction() once startTransaction() has been called.

Specified by:
startTransaction in interface com.ibatis.sqlmap.client.SqlMapTransactionManager

commitTransaction

public void commitTransaction()
                       throws java.sql.SQLException
Description copied from interface: com.ibatis.sqlmap.client.SqlMapTransactionManager
Commits the currently started transaction.

Specified by:
commitTransaction in interface com.ibatis.sqlmap.client.SqlMapTransactionManager

endTransaction

public void endTransaction()
                    throws java.sql.SQLException
Description copied from interface: com.ibatis.sqlmap.client.SqlMapTransactionManager
Ends a transaction and rolls back if necessary. If the transaction has been started, but not committed, it will be rolled back upon calling endTransaction().

Specified by:
endTransaction in interface com.ibatis.sqlmap.client.SqlMapTransactionManager

startBatch

public void startBatch()
                throws java.sql.SQLException
Description copied from interface: com.ibatis.sqlmap.client.SqlMapExecutor
Starts a batch in which update statements will be cached before being sent to the database all at once. This can improve overall performance of updates update when dealing with numerous updates (e.g. inserting 1:M related data).

Specified by:
startBatch in interface com.ibatis.sqlmap.client.SqlMapExecutor

executeBatch

public int executeBatch()
                 throws java.sql.SQLException
Description copied from interface: com.ibatis.sqlmap.client.SqlMapExecutor
Executes (flushes) all statements currently batched.

Specified by:
executeBatch in interface com.ibatis.sqlmap.client.SqlMapExecutor

setUserConnection

public void setUserConnection(java.sql.Connection connection)
                       throws java.sql.SQLException
Description copied from interface: com.ibatis.sqlmap.client.SqlMapTransactionManager
Allows the developer to easily use an externally supplied connection when executing statements.

Important: Using a user supplied connection basically sidesteps the transaction manager, so you are responsible for appropriately. Here's a (very) simple example (throws SQLException):

 try {
   Connection connection = dataSource.getConnection();
   sqlMap.setUserConnection(connection);
   // do work
   connection.commit();
 } catch (SQLException e) {
     try {
       if (connection != null) commit.rollback();
     } catch (SQLException ignored) {
       // generally ignored
     }
     throw e;  // rethrow the exception
 } finally {
   try {
     if (connection != null) connection.close();
   } catch (SQLException ignored) {
     // generally ignored
   }
 }
 

Specified by:
setUserConnection in interface com.ibatis.sqlmap.client.SqlMapTransactionManager

getUserConnection

public java.sql.Connection getUserConnection()
                                      throws java.sql.SQLException
Deprecated.  

TODO Deprecated

Specified by:
getUserConnection in interface com.ibatis.sqlmap.client.SqlMapTransactionManager

getCurrentConnection

public java.sql.Connection getCurrentConnection()
                                         throws java.sql.SQLException
Description copied from interface: com.ibatis.sqlmap.client.SqlMapTransactionManager
Returns the current connection in use. If no connection exists null will be returned. There may be no connection if no transaction has been started, and if no user provided connection has been set.

Specified by:
getCurrentConnection in interface com.ibatis.sqlmap.client.SqlMapTransactionManager

getDataSource

public javax.sql.DataSource getDataSource()
Description copied from interface: com.ibatis.sqlmap.client.SqlMapTransactionManager
Returns the DataSource instance currently being used by the SqlMapSession.

Specified by:
getDataSource in interface com.ibatis.sqlmap.client.SqlMapTransactionManager

getMappedStatement

public com.ibatis.sqlmap.engine.mapping.statement.MappedStatement getMappedStatement(java.lang.String id)
Gets a mapped statement by ID


isLazyLoadingEnabled

public boolean isLazyLoadingEnabled()
Get the status of lazy loading


isEnhancementEnabled

public boolean isEnhancementEnabled()
Get the status of CGLib enhancements


getSqlExecutor

public com.ibatis.sqlmap.engine.execution.SqlExecutor getSqlExecutor()
Get the SQL executor


getDelegate

public SqlMapExecutorDelegate getDelegate()
Get the delegate