/*
 * Copyright 2005-2010 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.core;

/**
 * Represents a provided interface together with its implementation.
 * 
 * @author Erik Brakkee
 */
class ProvidedInterfaceImplementation {
    private ProvidedInterface _provided;

    private Object _implementation;

    /**
     * Constructs the object.
     * 
     * @param aProvided
     *            Provided interface.
     * @param aImplementation
     *            Implementation.
     */
    public ProvidedInterfaceImplementation(ProvidedInterface aProvided,
        Object aImplementation) {
        _provided = aProvided;
        _implementation = aImplementation;
    }

    /**
     * 
     * @return The provided interface.
     */
    public ProvidedInterface getProvided() {
        return _provided;
    }

    /**
     * 
     * @param <T>
     *            Expected type of the implementation.
     * @param aType
     *            Type of the implementation.
     * 
     * @return Implementation.
     */
    public <T> T getImplementation(Class<T> aType) {
        return (T) _implementation;
    }
}