| /* |
| * Copyright (c) 2008, 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.runtime.injection; |
| |
| import java.lang.annotation.Annotation; |
| import java.lang.reflect.Field; |
| import java.lang.reflect.ParameterizedType; |
| import java.lang.reflect.Type; |
| import java.lang.reflect.TypeVariable; |
| import java.util.ArrayList; |
| import java.util.List; |
| import org.qi4j.api.injection.InjectionScope; |
| import org.qi4j.api.util.Classes; |
| import org.qi4j.api.util.Fields; |
| import org.qi4j.functional.Function; |
| import org.qi4j.functional.HierarchicalVisitor; |
| import org.qi4j.functional.Iterables; |
| import org.qi4j.functional.VisitableHierarchy; |
| |
| import static org.qi4j.api.util.Annotations.hasAnnotation; |
| import static org.qi4j.api.util.Annotations.type; |
| import static org.qi4j.functional.Iterables.filter; |
| import static org.qi4j.functional.Iterables.first; |
| import static org.qi4j.functional.Iterables.iterable; |
| import static org.qi4j.functional.Specifications.translate; |
| |
| /** |
| * JAVADOC |
| */ |
| public final class InjectedFieldsModel |
| implements Dependencies, VisitableHierarchy<Object, Object> |
| { |
| private final List<InjectedFieldModel> fields = new ArrayList<InjectedFieldModel>(); |
| |
| public InjectedFieldsModel( Class fragmentClass ) |
| { |
| Iterable<Field> mappedFields = Fields.FIELDS_OF.map( fragmentClass ); |
| for( Field field : mappedFields ) |
| { |
| Annotation injectionAnnotation = first( filter( translate( type(), hasAnnotation( InjectionScope.class ) ), iterable( field |
| .getAnnotations() ) ) ); |
| if( injectionAnnotation != null ) |
| { |
| addModel( fragmentClass, field, injectionAnnotation ); |
| } |
| } |
| } |
| |
| private void addModel( Class fragmentClass, Field field, Annotation injectionAnnotation ) |
| { |
| Type genericType = field.getGenericType(); |
| if( genericType instanceof ParameterizedType ) |
| { |
| genericType = new ParameterizedTypeInstance( ( (ParameterizedType) genericType ).getActualTypeArguments(), ( (ParameterizedType) genericType ) |
| .getRawType(), ( (ParameterizedType) genericType ).getOwnerType() ); |
| |
| for( int i = 0; i < ( (ParameterizedType) genericType ).getActualTypeArguments().length; i++ ) |
| { |
| Type type = ( (ParameterizedType) genericType ).getActualTypeArguments()[ i ]; |
| if( type instanceof TypeVariable ) |
| { |
| type = Classes.resolveTypeVariable( (TypeVariable) type, field.getDeclaringClass(), fragmentClass ); |
| ( (ParameterizedType) genericType ).getActualTypeArguments()[ i ] = type; |
| } |
| } |
| } |
| |
| boolean optional = DependencyModel.isOptional( injectionAnnotation, field.getAnnotations() ); |
| DependencyModel dependencyModel = new DependencyModel( injectionAnnotation, genericType, fragmentClass, optional, field |
| .getAnnotations() ); |
| InjectedFieldModel injectedFieldModel = new InjectedFieldModel( field, dependencyModel ); |
| this.fields.add( injectedFieldModel ); |
| } |
| |
| @Override |
| public Iterable<DependencyModel> dependencies() |
| { |
| return Iterables.map( new Function<InjectedFieldModel, DependencyModel>() |
| { |
| @Override |
| public DependencyModel map( InjectedFieldModel injectedFieldModel ) |
| { |
| return injectedFieldModel.dependency(); |
| } |
| }, fields ); |
| } |
| |
| @Override |
| public <ThrowableType extends Throwable> boolean accept( HierarchicalVisitor<? super Object, ? super Object, ThrowableType> modelVisitor ) |
| throws ThrowableType |
| { |
| if( modelVisitor.visitEnter( this ) ) |
| { |
| for( InjectedFieldModel field : fields ) |
| { |
| if( !field.accept( modelVisitor ) ) |
| { |
| break; |
| } |
| } |
| } |
| return modelVisitor.visitLeave( this ); |
| } |
| |
| public void inject( InjectionContext context, Object instance ) |
| { |
| for( InjectedFieldModel field : fields ) |
| { |
| field.inject( context, instance ); |
| } |
| } |
| } |