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/*
* 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.tuscany.sca.node;
import org.oasisopen.sca.ServiceReference;
/**
* Provides client access to the services in a domain.
*
* @version $Rev$ $Date$
*/
public interface Client {
/**
* Cast a type-safe reference to a CallableReference. Converts a type-safe
* reference to an equivalent CallableReference; if the target refers to a
* service then a ServiceReference will be returned, if the target refers to
* a callback then a CallableReference will be returned.
*
* @param target a reference proxy provided by the SCA runtime
* @param <B> the Java type of the business interface for the reference
* @param <R> the type of reference to be returned
* @return a CallableReference equivalent for the proxy
* @throws IllegalArgumentException if the supplied instance is not a
* reference supplied by the SCA runtime
*/
<B, R extends ServiceReference<B>> R cast(B target) throws IllegalArgumentException;
/**
* Returns a proxy for a service provided by a component in the SCA domain.
*
* @param businessInterface the interface that will be used to invoke the
* service
* @param serviceName the name of the service
* @param <B> the Java type of the business interface for the service
* @return an object that implements the business interface
*/
<B> B getService(Class<B> businessInterface, String serviceName);
/**
* Returns a ServiceReference for a service provided by a component in the
* SCA domain.
*
* @param businessInterface the interface that will be used to invoke the
* service
* @param serviceName the name of the service
* @param <B> the Java type of the business interface for the service
* @return a ServiceReference for the designated service
*/
<B> ServiceReference<B> getServiceReference(Class<B> businessInterface, String serviceName);
}
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