| /* |
| * 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.apache.zest.runtime.injection; |
| |
| import java.lang.annotation.Annotation; |
| import java.lang.reflect.Method; |
| 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.apache.zest.api.injection.InjectionScope; |
| import org.apache.zest.api.util.Annotations; |
| import org.apache.zest.api.util.Classes; |
| import org.apache.zest.api.util.Methods; |
| import org.apache.zest.functional.HierarchicalVisitor; |
| import org.apache.zest.functional.Specifications; |
| import org.apache.zest.functional.VisitableHierarchy; |
| |
| import static org.apache.zest.api.util.Annotations.hasAnnotation; |
| import static org.apache.zest.functional.Iterables.filter; |
| import static org.apache.zest.functional.Iterables.first; |
| import static org.apache.zest.functional.Iterables.flattenIterables; |
| import static org.apache.zest.functional.Iterables.iterable; |
| import static org.apache.zest.functional.Iterables.map; |
| |
| /** |
| * JAVADOC |
| */ |
| public final class InjectedMethodsModel |
| implements Dependencies, VisitableHierarchy<Object, Object> |
| { |
| // Model |
| private final List<InjectedMethodModel> methodModels = new ArrayList<InjectedMethodModel>(); |
| |
| public InjectedMethodsModel( Class fragmentClass ) |
| { |
| nextMethod: |
| for( Method method : Methods.METHODS_OF.map( fragmentClass ) ) |
| { |
| Annotation[][] parameterAnnotations = method.getParameterAnnotations(); |
| if( parameterAnnotations.length > 0 ) |
| { |
| InjectedParametersModel parametersModel = new InjectedParametersModel(); |
| final Type[] genericParameterTypes = method.getGenericParameterTypes(); |
| for( int i = 0; i < parameterAnnotations.length; i++ ) |
| { |
| Annotation injectionAnnotation = first( filter( Specifications.translate( Annotations.type(), hasAnnotation( InjectionScope.class ) ), iterable( parameterAnnotations[ i ] ) ) ); |
| if( injectionAnnotation == null ) |
| { |
| continue nextMethod; |
| } |
| |
| Type genericType = genericParameterTypes[ i ]; |
| if( genericType instanceof ParameterizedType ) |
| { |
| genericType = new ParameterizedTypeInstance( ( (ParameterizedType) genericType ).getActualTypeArguments(), ( (ParameterizedType) genericType ) |
| .getRawType(), ( (ParameterizedType) genericType ).getOwnerType() ); |
| |
| for( int j = 0; j < ( (ParameterizedType) genericType ).getActualTypeArguments().length; j++ ) |
| { |
| Type type = ( (ParameterizedType) genericType ).getActualTypeArguments()[ j ]; |
| if( type instanceof TypeVariable ) |
| { |
| type = Classes.resolveTypeVariable( (TypeVariable) type, method.getDeclaringClass(), fragmentClass ); |
| ( (ParameterizedType) genericType ).getActualTypeArguments()[ j ] = type; |
| } |
| } |
| } |
| |
| boolean optional = DependencyModel.isOptional( injectionAnnotation, parameterAnnotations[ i ] ); |
| DependencyModel dependencyModel = new DependencyModel( injectionAnnotation, genericType, fragmentClass, optional, parameterAnnotations[ i ] ); |
| parametersModel.addDependency( dependencyModel ); |
| } |
| InjectedMethodModel methodModel = new InjectedMethodModel( method, parametersModel ); |
| methodModels.add( methodModel ); |
| } |
| } |
| } |
| |
| @Override |
| public Iterable<DependencyModel> dependencies() |
| { |
| return flattenIterables( map( Dependencies.DEPENDENCIES_FUNCTION, methodModels ) ); |
| } |
| |
| // Context |
| public void inject( InjectionContext context, Object instance ) |
| { |
| for( InjectedMethodModel methodModel : methodModels ) |
| { |
| methodModel.inject( context, instance ); |
| } |
| } |
| |
| @Override |
| public <ThrowableType extends Throwable> boolean accept( HierarchicalVisitor<? super Object, ? super Object, ThrowableType> visitor ) |
| throws ThrowableType |
| { |
| if( visitor.visitEnter( this ) ) |
| { |
| for( InjectedMethodModel methodModel : methodModels ) |
| { |
| if( !methodModel.accept( visitor ) ) |
| { |
| break; |
| } |
| } |
| } |
| return visitor.visitLeave( this ); |
| } |
| } |