| /* |
| * Copyright (c) 2012, Kent Sølvsten. |
| * |
| * 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.runtime.composite; |
| |
| import java.util.List; |
| import java.util.Map; |
| import org.qi4j.api.association.AssociationDescriptor; |
| import org.qi4j.api.entity.EntityReference; |
| import org.qi4j.api.property.PropertyDescriptor; |
| import org.qi4j.functional.ForEach; |
| import org.qi4j.functional.Function; |
| import org.qi4j.functional.Iterables; |
| import org.qi4j.runtime.association.ManyAssociationModel; |
| import org.qi4j.runtime.association.NamedAssociationModel; |
| import org.qi4j.runtime.entity.EntityModel; |
| import org.qi4j.spi.entity.EntityState; |
| import org.qi4j.spi.entity.ManyAssociationState; |
| import org.qi4j.spi.entity.NamedAssociationState; |
| |
| /** |
| * Function based StateResolver. |
| */ |
| public class FunctionStateResolver |
| implements StateResolver |
| { |
| final Function<PropertyDescriptor, Object> propertyFunction; |
| final Function<AssociationDescriptor, EntityReference> associationFunction; |
| final Function<AssociationDescriptor, Iterable<EntityReference>> manyAssociationFunction; |
| final Function<AssociationDescriptor, Map<String, EntityReference>> namedAssociationFunction; |
| |
| public FunctionStateResolver( Function<PropertyDescriptor, Object> propertyFunction, |
| Function<AssociationDescriptor, EntityReference> associationFunction, |
| Function<AssociationDescriptor, Iterable<EntityReference>> manyAssociationFunction, |
| Function<AssociationDescriptor, Map<String, EntityReference>> namedAssociationFunction ) |
| { |
| this.propertyFunction = propertyFunction; |
| this.associationFunction = associationFunction; |
| this.manyAssociationFunction = manyAssociationFunction; |
| this.namedAssociationFunction = namedAssociationFunction; |
| } |
| |
| @Override |
| public Object getPropertyState( PropertyDescriptor propertyDescriptor ) |
| { |
| return propertyFunction.map( propertyDescriptor ); |
| } |
| |
| @Override |
| public EntityReference getAssociationState( AssociationDescriptor associationDescriptor ) |
| { |
| return associationFunction.map( associationDescriptor ); |
| } |
| |
| @Override |
| public List<EntityReference> getManyAssociationState( AssociationDescriptor associationDescriptor ) |
| { |
| return Iterables.toList( manyAssociationFunction.map( associationDescriptor ) ); |
| } |
| |
| @Override |
| public Map<String, EntityReference> getNamedAssociationState( AssociationDescriptor associationDescriptor ) |
| { |
| return namedAssociationFunction.map( associationDescriptor ); |
| } |
| |
| public void populateState( EntityModel model, EntityState state ) |
| { |
| for( PropertyDescriptor propDesc : model.state().properties() ) |
| { |
| Object value = getPropertyState( propDesc ); |
| state.setPropertyValue( propDesc.qualifiedName(), value ); |
| } |
| for( AssociationDescriptor assDesc : model.state().associations() ) |
| { |
| EntityReference ref = getAssociationState( assDesc ); |
| state.setAssociationValue( assDesc.qualifiedName(), ref ); |
| } |
| for( ManyAssociationModel manyAssDesc : model.state().manyAssociations() ) |
| { |
| ManyAssociationState associationState = state.manyAssociationValueOf( manyAssDesc.qualifiedName() ); |
| // First clear existing ones |
| for( EntityReference ref : associationState ) |
| { |
| associationState.remove( ref ); |
| } |
| // then add the new ones. |
| for( EntityReference ref : getManyAssociationState( manyAssDesc ) ) |
| { |
| associationState.add( 0, ref ); |
| } |
| } |
| for( NamedAssociationModel namedAssDesc : model.state().namedAssociations() ) |
| { |
| NamedAssociationState associationState = state.namedAssociationValueOf( namedAssDesc.qualifiedName() ); |
| // First clear existing ones |
| for( String name : associationState ) |
| { |
| associationState.remove( name ); |
| } |
| // then add the new ones. |
| for( Map.Entry<String, EntityReference> entry : getNamedAssociationState( namedAssDesc ).entrySet() ) |
| { |
| associationState.put( entry.getKey(), entry.getValue() ); |
| } |
| } |
| } |
| } |