/*
* 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.interfacedef.java.impl;
import java.lang.reflect.Method;
import java.lang.reflect.Type;
import java.util.Collection;
import java.util.List;
import org.apache.tuscany.sca.interfacedef.DataType;
import org.apache.tuscany.sca.interfacedef.Interface;
import org.apache.tuscany.sca.interfacedef.Operation;
/**
* Contains methods for mapping between an operation in a
* {@link org.apache.tuscany.spi.model.ServiceContract} and a method defined by
* a Java interface
*
* @version $Rev: 583524 $ $Date: 2007-10-10 17:00:43 +0100 (Wed, 10 Oct 2007) $
*/
public final class JavaInterfaceUtil {
private JavaInterfaceUtil() {
}
/**
* Return the method on the implementation class that matches the operation.
*
* @param implClass the implementation class or interface
* @param operation the operation to match
* @return the method described by the operation
* @throws NoSuchMethodException if no such method exists
* @Deprecated
*/
public static Method findMethod(Class<?> implClass, Operation operation) throws NoSuchMethodException {
String name = operation.getName();
Interface interface1 = operation.getInterface();
if (interface1 != null && interface1.isRemotable()) {
for (Method m : implClass.getMethods()) {
if (m.getName().equals(name)) {
return m;
}
}
throw new NoSuchMethodException("No matching method for operation " + operation.getName()
+ " is found on "
+ implClass);
}
Class<?>[] paramTypes = getPhysicalTypes(operation);
return implClass.getMethod(name, paramTypes);
}
/**
* @Deprecated
*/
private static Class<?>[] getPhysicalTypes(Operation operation) {
DataType<List<DataType>> inputType = operation.getInputType();
if (inputType == null) {
return new Class<?>[] {};
}
List<DataType> types = inputType.getLogical();
Class<?>[] javaTypes = new Class<?>[types.size()];
for (int i = 0; i < javaTypes.length; i++) {
Type physical = types.get(i).getPhysical();
if (physical instanceof Class<?>) {
javaTypes[i] = (Class<?>)physical;
} else {
throw new UnsupportedOperationException();
}
}
return javaTypes;
}
/**
* Searches a collection of operations for a match against the given method
*
* @param method the method to match
* @param operations the operations to match against
* @return a matching operation or null
* @Deprecated
*/
public static Operation findOperation(Method method, Collection<Operation> operations) {
for (Operation operation : operations) {
if (match(operation, method)) {
return operation;
}
}
return null;
}
/**
* Determines if the given operation matches the given method
*
* @return true if the operation matches, false if does not
*/
private static boolean match(Operation operation, Method method) {
Class<?>[] params = method.getParameterTypes();
DataType<List<DataType>> inputType = operation.getInputType();
List<DataType> types = inputType.getLogical();
boolean found = true;
if (types.size() == params.length && method.getName().equals(operation.getName())) {
for (int i = 0; i < params.length; i++) {
Class<?> clazz = params[i];
if (!clazz.equals(operation.getInputType().getLogical().get(i).getPhysical())) {
found = false;
}
}
} else {
found = false;
}
return found;
}
public static String getNamespace(Class<?> cls) {
Package pkg = cls.getPackage();
if (pkg == null) {
return "";
}
StringBuffer ns = new StringBuffer("http://");
String[] names = pkg.getName().split("\\.");
for (int i = names.length - 1; i >= 0; i--) {
ns.append(names[i]);
if (i != 0) {
ns.append('.');
}
}
ns.append('/');
return ns.toString();
}
}