| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you 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.polygene.runtime.injection; |
| |
| import java.lang.annotation.Annotation; |
| import java.lang.reflect.ParameterizedType; |
| import java.lang.reflect.Type; |
| import java.lang.reflect.TypeVariable; |
| import java.util.ArrayList; |
| import java.util.Arrays; |
| import java.util.List; |
| import java.util.Optional; |
| import java.util.stream.Stream; |
| import javax.annotation.PostConstruct; |
| import org.apache.polygene.api.injection.InjectionScope; |
| import org.apache.polygene.api.util.Classes; |
| import org.apache.polygene.api.util.Methods; |
| import org.apache.polygene.api.util.HierarchicalVisitor; |
| import org.apache.polygene.api.util.VisitableHierarchy; |
| |
| import static org.apache.polygene.api.util.Annotations.typeHasAnnotation; |
| |
| /** |
| * JAVADOC |
| */ |
| public final class InjectedMethodsModel |
| implements Dependencies, VisitableHierarchy<Object, Object> |
| { |
| // Model |
| private final List<InjectedMethodModel> methodModels = new ArrayList<>(); |
| |
| public InjectedMethodsModel( Class fragmentClass ) |
| { |
| Methods.methodsOf( fragmentClass ).forEach( method -> { |
| Annotation[][] parameterAnnotations = method.getParameterAnnotations(); |
| if( parameterAnnotations.length > 0 ) |
| { |
| InjectedParametersModel parametersModel = new InjectedParametersModel(); |
| final Type[] genericParameterTypes = method.getGenericParameterTypes(); |
| boolean found = true; |
| for( int i = 0; i < parameterAnnotations.length; i++ ) |
| { |
| Optional<Annotation> opt = Arrays.stream( parameterAnnotations[ i ] ) |
| .filter( typeHasAnnotation( InjectionScope.class ) ) |
| .findFirst(); |
| if( opt.isPresent() ) |
| { |
| Annotation injectionAnnotation = opt.get(); |
| Type genericType = genericParameterTypes[ i ]; |
| if( genericType instanceof ParameterizedType ) |
| { |
| genericType = createParameterizedTypeInstance( (ParameterizedType) genericType ); |
| |
| 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 ); |
| } |
| else |
| { |
| found = false; |
| break; |
| } |
| } |
| if( found ) |
| { |
| methodModels.add( new InjectedMethodModel( method, parametersModel ) ); |
| } |
| } |
| } ); |
| } |
| |
| @PostConstruct |
| private Type createParameterizedTypeInstance( ParameterizedType genericType ) |
| { |
| return new ParameterizedTypeInstance( |
| genericType.getActualTypeArguments(), genericType.getRawType(), genericType.getOwnerType() |
| ); |
| } |
| |
| @Override |
| public Stream<DependencyModel> dependencies() |
| { |
| return methodModels.stream().flatMap( InjectedMethodModel::dependencies ); |
| } |
| |
| // 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 ); |
| } |
| } |