org.opensubsystems.core.persist.db
Class DatabaseOperation

java.lang.Object
  org.opensubsystems.core.persist.db.DatabaseOperation

Direct Known Subclasses:

DatabaseReadOperation, DatabaseUpdateOperation

public abstract class DatabaseOperation
extends java.lang.Object

Base class for adapter to simplify writing of database operations, which should take care of requesting and returning connections, transaction management and exception handling.

Version:

$Id: DatabaseOperation.java,v 1.5 2007/01/07 06:14:18 bastafidli Exp $

Author:

Miro Halas

Code reviewer:

Miro Halas

Code reviewed:

1.1 2005/08/24 06:55:27 bastafidli

Field Summary

protected java.lang.Object	m_data Data used for this operation.
protected DatabaseSchema	m_dbschema Schema which is executing this operation.
protected DatabaseFactoryImpl	m_factory Factory which is executing this operation.
protected int	m_iDataType Data type the operation is used for.
protected java.lang.Object	m_returnData Attribute to store data to return from executeUpdate.
protected java.lang.String	m_strQuery Query specified by the caller to prepare if any.

Constructor Summary

DatabaseOperation(DatabaseFactoryImpl factory)
Constructor to use when the database operation doesn't require any prepared statement.

DatabaseOperation(DatabaseFactoryImpl factory, java.lang.String strQueryToPrepare)
Constructor to use when database operation doesn't require any prepared statement.

DatabaseOperation(DatabaseFactoryImpl factory, java.lang.String strQueryToPrepare, DatabaseSchema schema, java.lang.Object data, int dataType)
Full constructor to use when database operation doesn't require any prepared statement.

Method Summary

java.lang.Object	getReturnData() Get data which should be returned from method which actuall implements database operation
void	setReturnData(java.lang.Object returnData) Set data which should be returned from method which actuall implements database operation

Methods inherited from class java.lang.Object

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

Field Detail

m_factory

protected DatabaseFactoryImpl m_factory

Factory which is executing this operation.

m_returnData

protected java.lang.Object m_returnData

Attribute to store data to return from executeUpdate.

m_strQuery

protected java.lang.String m_strQuery

Query specified by the caller to prepare if any.

m_dbschema

protected DatabaseSchema m_dbschema

Schema which is executing this operation.

m_iDataType

protected int m_iDataType

Data type the operation is used for.

m_data

protected java.lang.Object m_data

Data used for this operation.

Constructor Detail

DatabaseOperation

public DatabaseOperation(DatabaseFactoryImpl factory)

Constructor to use when the database operation doesn't require any prepared statement.

Parameters:

factory - - factory which is executing this operation

DatabaseOperation

public DatabaseOperation(DatabaseFactoryImpl factory,
                         java.lang.String strQueryToPrepare)

Constructor to use when database operation doesn't require any prepared statement.

Parameters:

factory - - factory which is executing this operation

strQueryToPrepare - - query which should be used to construct prepared statement which will be passed in to executeUpdate

DatabaseOperation

public DatabaseOperation(DatabaseFactoryImpl factory,
                         java.lang.String strQueryToPrepare,
                         DatabaseSchema schema,
                         java.lang.Object data,
                         int dataType)

Full constructor to use when database operation doesn't require any prepared statement.

Parameters:

factory - - factory which is executing this operation

strQueryToPrepare - - query which should be used to construct prepared statement which will be passed in to executeUpdate

schema - - database schema used with this operation

data - - data used for operation

dataType - - data type used with operation

Method Detail

getReturnData

public java.lang.Object getReturnData()

Get data which should be returned from method which actuall implements database operation

Returns:

Object - data set by executeUpdate using set method

setReturnData

public void setReturnData(java.lang.Object returnData)

Set data which should be returned from method which actuall implements database operation

Parameters:

returnData - - data set by executeUpdate using set method