2 * Copyright 2008 the original author or authors.
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
8 * http://www.apache.org/licenses/LICENSE-2.0
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
16 package org.wamblee.system.adapters;
18 import java.lang.reflect.Constructor;
19 import java.util.ArrayList;
20 import java.util.Arrays;
21 import java.util.List;
23 import org.wamblee.collections.CollectionFilter;
24 import org.wamblee.conditions.Condition;
25 import org.wamblee.system.core.DefaultProvidedInterface;
26 import org.wamblee.system.core.DefaultRequiredInterface;
27 import org.wamblee.system.core.ProvidedInterface;
28 import org.wamblee.system.core.RequiredInterface;
29 import org.wamblee.system.core.Scope;
30 import org.wamblee.system.core.SystemAssemblyException;
33 * The class configuration encapsulates the knowledge of how to wrap a class as a component.
34 * In particular, it provides:
36 * <li> Selection of a constructor using explicit selection
37 * {@link #select(Class...)} or using the most greedy constructor
41 * Selection of methods to invoke to inject other objects into the object.
43 * <li> Selection of fields to set.
47 * @author Erik Brakkee
50 public class ClassConfiguration {
53 private ConstructorConfiguration _constructorConfig;
56 * Constructs the configuration. By default no constructor is selected and
57 * one of {@link #select(Class...)} or
58 * {@link #greedy()} must be called.
59 * @param aClass Class to construct.
61 public ClassConfiguration(Class aClass) {
63 _constructorConfig = new ConstructorConfiguration(aClass);
66 public ConstructorConfiguration getConstructorConfig() {
67 return _constructorConfig;
71 * Creates the object in the given scope.
72 * @param aScope Scope containing required interfaces for this object.
75 public Object create(Scope aScope) {
76 return _constructorConfig.create(aScope);
79 public ProvidedInterface[] getProvidedInterfaces() {
80 return new ProvidedInterface[] {
81 new DefaultProvidedInterface("provided", _class)
85 public RequiredInterface[] getRequiredInterface() {
86 return _constructorConfig.getRequiredInterfaces().toArray(new RequiredInterface[0]);