Java Doc for DbTransactionUser.java in  » Web-Framework » rife-1.6.1 » com » uwyn » rife » database » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » Web Framework » rife 1.6.1 » com.uwyn.rife.database 
Source Cross Reference  Class Diagram Java Document (Java Doc) 


java.lang.Object
   com.uwyn.rife.database.DbTransactionUser

DbTransactionUser
abstract public class DbTransactionUser implements Cloneable(Code)
By extending this class it's possible to provide the logic that should be executed by the DbQueryManager.inTransaction(DbTransactionUser) inTransaction method in the DbQueryManager class.

This class has both a default constructor and one that can take a data object. This can be handy when using it as an extending anonymous inner class when you need to use variables inside the inner class that are cumbersome to change to final in the enclosing class.
author:
   Geert Bevin (gbevin[remove] at uwyn dot com)
version:
   $Revision: 3634 $
See Also:   DbQueryManager.inTransaction(DbTransactionUser)
since:
   1.0



Field Summary
protected  DataTypemData
    

Constructor Summary
public  DbTransactionUser()
    
public  DbTransactionUser(DataType data)
    

Method Summary
public  Objectclone()
     Simply clones the instance with the default clone method since this class contains no member variables.
public  DataTypegetData()
    
public  intgetTransactionIsolation()
     Should be overridden if the transaction has to be executed in another isolation level.
public  voidrollback()
     Should be used to roll back ongoing transactions, otherwise enclosing transaction users might not be interrupted and subsequent modification can still happen outside the transaction.
public  voidthrowException(Exception exception)
     Calling this method makes it possible to throw a checked exception from within this class.

To catch it you should surround the DbQueryManager.inTransaction(DbTransactionUser) inTransaction with a try-catch block that catching InnerClassException.

abstract public  ResultTypeuseTransaction()
     Should be implemented by all extending classes.

Field Detail
mData
protected DataType mData(Code)




Constructor Detail
DbTransactionUser
public DbTransactionUser()(Code)



DbTransactionUser
public DbTransactionUser(DataType data)(Code)




Method Detail
clone
public Object clone()(Code)
Simply clones the instance with the default clone method since this class contains no member variables.
since:
   1.0



getData
public DataType getData()(Code)



getTransactionIsolation
public int getTransactionIsolation()(Code)
Should be overridden if the transaction has to be executed in another isolation level. -1 when the active isolation level should bepreserved; or

a level constant from java.sql.Connection Connection if theisolation needs to be changed.
since:
   1.0




rollback
public void rollback() throws RollbackException(Code)
Should be used to roll back ongoing transactions, otherwise enclosing transaction users might not be interrupted and subsequent modification can still happen outside the transaction.
exception:
  RollbackException - indicates that a rollback should happenand all further transaction logic interrupted.
since:
   1.0



throwException
public void throwException(Exception exception) throws InnerClassException(Code)
Calling this method makes it possible to throw a checked exception from within this class.

To catch it you should surround the DbQueryManager.inTransaction(DbTransactionUser) inTransaction with a try-catch block that catching InnerClassException. The original exception is then available through getCause() and can for example be rethrown.
exception:
  InnerClassException - when a checked exception needs to bethrown from within this class and caught outside the caller.
since:
   1.0




useTransaction
abstract public ResultType useTransaction() throws InnerClassException(Code)
Should be implemented by all extending classes.
since:
   1.0



Methods inherited from java.lang.Object
native protected Object clone() throws CloneNotSupportedException(Code)(Java Doc)
public boolean equals(Object obj)(Code)(Java Doc)
protected void finalize() throws Throwable(Code)(Java Doc)
final native public Class getClass()(Code)(Java Doc)
native public int hashCode()(Code)(Java Doc)
final native public void notify()(Code)(Java Doc)
final native public void notifyAll()(Code)(Java Doc)
public String toString()(Code)(Java Doc)
final native public void wait(long timeout) throws InterruptedException(Code)(Java Doc)
final public void wait(long timeout, int nanos) throws InterruptedException(Code)(Java Doc)
final public void wait() throws InterruptedException(Code)(Java Doc)

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