com.objectwave.persist.collectionAdapters
Class HashMapCollectionAdapter

java.lang.Object
  |
  +--com.objectwave.persist.collectionAdapters.HashMapCollectionAdapter

All Implemented Interfaces:

CollectionAdapter, java.io.Serializable

public class HashMapCollectionAdapter

extends java.lang.Object

implements CollectionAdapter

Collection Adapters were introduced to support multiple collection types within the JavaGrinder Framework.

Version:

1.0

See Also:

Serialized Form

Constructor Summary

HashMapCollectionAdapter()

Method Summary

void	addElement(java.lang.Object obj) Add the object to this collection.
java.lang.Object	firstElement()
java.lang.Object	getCollectionObject() Get the actual collection object.
CollectionAdapter	getNewInstance() Invoked when a new instance is needed.
void	preQuery(SQLQuery q) An entry point to tweak the query before issuing the find.
int	size() The number of elements in the collection.

Methods inherited from class java.lang.Object

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

Constructor Detail

HashMapCollectionAdapter

public HashMapCollectionAdapter()

Method Detail

firstElement

public java.lang.Object firstElement()

Specified by:

firstElement in interface CollectionAdapter

Returns:

preQuery

public void preQuery(SQLQuery q)

An entry point to tweak the query before issuing the find. This will be a noop for most CollectionAdapters.

Specified by:

preQuery in interface CollectionAdapter

Parameters:

q -

getCollectionObject

public java.lang.Object getCollectionObject()

Get the actual collection object.

Specified by:

getCollectionObject in interface CollectionAdapter

Returns:

java.util.Vector

addElement

public void addElement(java.lang.Object obj)

Add the object to this collection. Override this method if you define your own collection adapter.

Specified by:

addElement in interface CollectionAdapter

Parameters:

obj - The feature to be added to the Element attribute

size

public int size()

The number of elements in the collection.

Specified by:

size in interface CollectionAdapter

Returns:

getNewInstance

public CollectionAdapter getNewInstance()

Description copied from interface: CollectionAdapter

Invoked when a new instance is needed. This could simply return 'this'. This is called when creating the SQLQuery that will realize a collection attribute. Normally, this method is not invoked, only when a CollectionAdapter is associated with an AttributeTypeColumn.

Specified by:

getNewInstance in interface CollectionAdapter

Returns:

The NewInstance value