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[utils] / system / general / src / main / java / org / wamblee / system / adapters / ClassConfiguration.java

diff --git a/system/general/src/main/java/org/wamblee/system/adapters/ClassConfiguration.java b/system/general/src/main/java/org/wamblee/system/adapters/ClassConfiguration.java
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+/*
+ * Copyright 2008 the original author or authors.
+ * 
+ * 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.wamblee.system.adapters;
+
+import java.lang.reflect.Constructor;
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.List;
+
+import org.wamblee.collections.CollectionFilter;
+import org.wamblee.conditions.Condition;
+import org.wamblee.system.core.DefaultProvidedInterface;
+import org.wamblee.system.core.DefaultRequiredInterface;
+import org.wamblee.system.core.ProvidedInterface;
+import org.wamblee.system.core.RequiredInterface;
+import org.wamblee.system.core.Scope;
+import org.wamblee.system.core.SystemAssemblyException;
+
+/**
+ * The class configuration encapsulates the knowledge of how to wrap a class as a component.
+ * In particular, it provides:
+ * <ul>
+ *   <li> Selection of a constructor using explicit selection 
+ *      {@link #select(Class...)} or using the most greedy constructor 
+ *      {@link #greedy()}.
+ *   </li>
+ *   <li>
+ *      Selection of methods to invoke to inject other objects into the object.  
+ *   </li>
+ *   <li> Selection of fields to set. 
+ *   </li>
+ * </ul>
+ * 
+ * @author Erik Brakkee
+ *
+ */
+public class ClassConfiguration {
+
+       private Class _class; 
+       private ConstructorConfiguration _constructorConfig; 
+       
+       /**
+        * Constructs the configuration. By default no constructor is selected and 
+        * one of {@link #select(Class...)} or 
+        * {@link #greedy()} must be called.  
+        * @param aClass Class to construct. 
+        */
+       public ClassConfiguration(Class aClass) {
+               _class = aClass; 
+               _constructorConfig = new ConstructorConfiguration(aClass);  
+       }
+       
+       public ConstructorConfiguration getConstructorConfig() {
+               return _constructorConfig;
+       }
+
+       /**
+        * Creates the object in the given scope. 
+        * @param aScope Scope containing required interfaces for this object. 
+        * @return object. 
+        */
+       public Object create(Scope aScope) {
+               return _constructorConfig.create(aScope);
+       }
+       
+       public ProvidedInterface[] getProvidedInterfaces() { 
+               return new ProvidedInterface[] { 
+                       new DefaultProvidedInterface("provided", _class)        
+               };
+       }
+       
+       public RequiredInterface[] getRequiredInterface() { 
+               return _constructorConfig.getRequiredInterfaces().toArray(new RequiredInterface[0]);
+       }
+}