de.must.dataobj

Class DataObjectHolder

java.lang.Object

de.must.dataobj.DataObjectWrapper

de.must.dataobj.DataObjectHolder

public class DataObjectHolder
extends DataObjectWrapper

A wrapper around a data object with creation option when instance of this object is needed. Preserves resources, e.g. SQL connections until function is explicitly used.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	DataObjectHolder.Creator

Field Summary

Fields inherited from class de.must.dataobj.DataObjectWrapper

dataObject

Constructor Summary

Constructors

Constructor and Description
DataObjectHolder(DataObjectHolder.Creator creator) Constructs an new data object holder.

Method Summary

Modifier and Type	Method and Description
DataObject	createDataObject(java.sql.Connection connection) Creates and returns the data object instance.

Methods inherited from class de.must.dataobj.DataObjectWrapper

getDataObject

Methods inherited from class java.lang.Object

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

Constructor Detail

DataObjectHolder

public DataObjectHolder(DataObjectHolder.Creator creator)

Constructs an new data object holder.

Parameters:

creator - the creator which has to implement the create function to build an instance of the data object

Method Detail

createDataObject

public DataObject createDataObject(java.sql.Connection connection)

Creates and returns the data object instance. Should only be called if getDataObject() returns null.

Parameters:

connection - the connection to be used by the data object.

Returns:

a new instance of the data object