| /* |
| * Copyright (c) 2009, Rickard Öberg. All Rights Reserved. |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at http://www.apache.org/licenses/LICENSE-2.0 |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| * |
| */ |
| |
| package org.qi4j.spi.entitystore.helpers; |
| |
| import java.util.Iterator; |
| import java.util.List; |
| import org.qi4j.api.entity.EntityReference; |
| import org.qi4j.spi.entity.ManyAssociationState; |
| |
| /** |
| * Default implementation of ManyAssociationState. Backed by ArrayList. |
| */ |
| public final class DefaultManyAssociationState |
| implements ManyAssociationState |
| { |
| private DefaultEntityState entityState; |
| private List<EntityReference> references; |
| |
| public DefaultManyAssociationState( DefaultEntityState entityState, List<EntityReference> references ) |
| { |
| this.entityState = entityState; |
| this.references = references; |
| } |
| |
| @Override |
| public int count() |
| { |
| return references.size(); |
| } |
| |
| @Override |
| public boolean contains( EntityReference entityReference ) |
| { |
| return references.contains( entityReference ); |
| } |
| |
| @Override |
| public boolean add( int i, EntityReference entityReference ) |
| { |
| if( references.contains( entityReference ) ) |
| { |
| return false; |
| } |
| |
| references.add( i, entityReference ); |
| entityState.markUpdated(); |
| return true; |
| } |
| |
| @Override |
| public boolean remove( EntityReference entity ) |
| { |
| boolean removed = references.remove( entity ); |
| entityState.markUpdated(); |
| return removed; |
| } |
| |
| @Override |
| public EntityReference get( int i ) |
| { |
| return references.get( i ); |
| } |
| |
| @Override |
| public Iterator<EntityReference> iterator() |
| { |
| final Iterator<EntityReference> iter = references.iterator(); |
| |
| return new Iterator<EntityReference>() |
| { |
| EntityReference current; |
| |
| @Override |
| public boolean hasNext() |
| { |
| return iter.hasNext(); |
| } |
| |
| @Override |
| public EntityReference next() |
| { |
| current = iter.next(); |
| return current; |
| } |
| |
| @Override |
| public void remove() |
| { |
| iter.remove(); |
| entityState.markUpdated(); |
| } |
| }; |
| } |
| } |