de.zib.gndms.model.common.repository.TransientDao< K, M, D > Class Reference

Inheritance diagram for de.zib.gndms.model.common.repository.TransientDao< K, M, D >:

List of all members.

Public Member Functions
K	create (D descriptor)
	Creates a fresh instance of M matching descriptor.
void	add (M model, K key)
	Addes a model to the dao.
M	get (K key) throws NoSuchElementException
	Used to retrive an model object form the dao.
void	deleteByKey (K key)
	Deletes a model matching the given key.
void	delete (M model)
	This is expensive, so don't lose your key.
Protected Member Functions
M	cacheGet (K key)
Map< K, M >	getModels ()
void	setModels (Cache< K, M > models)
Private Attributes
Cache< K, M >	models

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Detailed Description

Author:

try ma ik jo rr a zib

Version:

$Id$

Date: 23.12.2010, Time: 12:32:07

Transient dao uses a hashmap to store key model associations.

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Member Function Documentation

void de.zib.gndms.model.common.repository.TransientDao< K, M, D >.add	(	M	model,
		K	key
	)

Addes a model to the dao.

Parameters:

model

The model to add, with the key to use.

Implements de.zib.gndms.model.common.repository.Dao< K, M, D >.

                                      {
        models.asMap().put( key, model );
    }

K de.zib.gndms.model.common.repository.TransientDao< K, M, D >.create

(

D

descriptor

)

Creates a fresh instance of M matching descriptor.

This can be used fine grained construction, i.e. if M is a base class.

Parameters:

descriptor

The descriptor of the object, i.e. class.

Returns:

The key of the new instance.

Implements de.zib.gndms.model.common.repository.Dao< K, M, D >.

                                    {
        return create( );
    }

void de.zib.gndms.model.common.repository.TransientDao< K, M, D >.delete

(

M

model

)

This is expensive, so don't lose your key.

Parameters:

model

The model to delete.

Implements de.zib.gndms.model.common.repository.Dao< K, M, D >.

                                  {
        for ( K key: models.asMap().keySet() ) {
            try {
                if( models.get( key ).equals( model ) ) {
                    deleteByKey( key );
                    return;
                }
            } catch ( ExecutionException e ) {
                // intentionally
            }
        }
    }

void de.zib.gndms.model.common.repository.TransientDao< K, M, D >.deleteByKey

(

K

key

)

Deletes a model matching the given key.

Parameters:

key

The key.

NOTE: Stupid type erasure.

Implements de.zib.gndms.model.common.repository.Dao< K, M, D >.

                                     {
        models.invalidate( key );
    }

M de.zib.gndms.model.common.repository.TransientDao< K, M, D >.get

(

K

key

)

throws NoSuchElementException

Used to retrive an model object form the dao.

Parameters:

key	The key of the object.

Returns:

Implements de.zib.gndms.model.common.repository.Dao< K, M, D >.

                                                        {

        if( models.asMap().containsKey( key ) )
            try {
                return models.get( key );
            } catch ( ExecutionException e ) {
                throw new NoSuchElementException( key.toString() );
            }

        throw new NoSuchElementException( key.toString() );
    }

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The documentation for this class was generated from the following file:

• model/src/de/zib/gndms/model/common/repository/TransientDao.java