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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.spi.wire;
import java.lang.reflect.Method;
import java.util.List;
import java.util.Map;
import org.osoa.sca.CallableReference;
import org.apache.tuscany.spi.model.ServiceContract;
/**
* Creates proxies that implement Java interfaces and invocation handlers for fronting wires
*
* @version $$Rev$$ $$Date$$
*/
public interface ProxyService {
/**
* Creates a Java proxy for the given wire
*
* @param interfaze the interface the proxy implements
* @param wire the wire to proxy @return the proxy
* @throws ProxyCreationException
*/
<T> T createProxy(Class<T> interfaze, Wire wire) throws ProxyCreationException;
/**
* Creates a Java proxy for the given wire
*
* @param interfaze the interface the proxy implements
* @param wire the wire to proxy @return the proxy
* @param mapping the method to chain holder mapping to use in creating the proxy. Clients may cache and resuse
* this mapping for performance.
* @throws ProxyCreationException
*/
<T> T createProxy(Class<T> interfaze, Wire wire, Map<Method, ChainHolder> mapping)
throws ProxyCreationException;
/**
* Creates a Java proxy for the service contract callback
*
* @param interfaze the interface the proxy should implement
* @return the proxy
* @throws ProxyCreationException
*/
Object createCallbackProxy(Class<?> interfaze, List<Wire> wires) throws ProxyCreationException;
/**
* Cast a proxy to a CallableReference.
*
* @param target a proxy generated by this implementation
* @return a CallableReference (or subclass) equivalent to this prozy
* @throws IllegalArgumentException if the object supplied is not a proxy
*/
<B, R extends CallableReference<B>> R cast(B target) throws IllegalArgumentException;
/**
* Check the compatiblity of the source and the target service contracts.<p> A wire may only connect a source to a
* target if the target implements an interface that is compatible with the interface required by the source. The
* source and the target are compatible if:
* <p/>
* <ol> <li>the source interface and the target interface MUST either both be remotable or they are both local
* <li>the methods on the target interface MUST be the same as or be a superset of the methods in the interface
* specified on the source <li>compatibility for the individual method is defined as compatibility of the signature,
* that is method name, input types, and output types MUST BE the same. <li>the order of the input and output types
* also MUST BE the same. <li>the set of Faults and Exceptions expected by the source MUST BE the same or be a
* superset of those specified by the service. <li>other specified attributes of the two interfaces MUST match,
* including Scope and Callback interface </ol>
* <p/>
* <p>Please note this test is not symetric: the success of checkCompatibility(A, B) does NOT imply
* checkCompatibility(B, A)
*
* @param source The source service contract
* @param target The target service contract
* @param ignoreCallback Indicate the callback should be checked
* @param silent if true, errors will be thrown if the service contracts are not compatible
* @return true if the service contracts are compatible
* @throws IncompatibleServiceContractException
* If the source service contract is not compatible with the target one
* <p>
* TODO JFM this method should be moved from this interface to the allocator phase
*/
boolean checkCompatibility(ServiceContract<?> source,
ServiceContract<?> target,
boolean ignoreCallback,
boolean silent)
throws IncompatibleServiceContractException;
}
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