/*
* 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.felix.scr.impl.inject;
import java.util.Map;
import org.apache.felix.scr.impl.manager.ComponentContextImpl;
import org.apache.felix.scr.impl.manager.DependencyManager;
/**
* This object describes a constructor for a component.
* The name ConstructorMethod has been chosen to avoid a clash with the
* existing Constructor class.
*/
public interface ConstructorMethod<T> {
public class ReferencePair<S> {
public DependencyManager<S, ?> dependencyManager;
public DependencyManager.OpenStatus<S, ?> openStatus;
}
/**
* Create a new instance
* @param componentClass The implementation class of the component
* @param componentContext The component context
* @param logger A logger
* @return The instance
*/
<S> T newInstance(Class<T> componentClass,
ComponentContextImpl<T> componentContext,
Map<Integer, ReferencePair<S>> parameterMap)
throws Exception;
public ConstructorMethod<Object> DEFAULT = new ConstructorMethod<Object>() {
@Override
public <S> Object newInstance(Class<Object> componentClass,
ComponentContextImpl<Object> componentContext,
Map<Integer, ReferencePair<S>> parameterMap)
throws Exception
{
// 112.4.4 The class must be public and have a public constructor without arguments so component instances
// may be created by the SCR with the newInstance method on Class
return componentClass.newInstance();
}
};
}