/*
* 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.springframework.ws.server.endpoint.support;
import java.lang.reflect.AnnotatedElement;
import java.lang.reflect.Method;
import javax.xml.namespace.NamespaceContext;
import org.springframework.util.Assert;
import org.springframework.ws.server.endpoint.annotation.Namespace;
import org.springframework.ws.server.endpoint.annotation.Namespaces;
import org.springframework.xml.namespace.SimpleNamespaceContext;
/**
* Helper class for handling {@link Namespace @Namespace} annotations.
*
* @author Arjen Poutsma
* @since 2.0
*/
public abstract class NamespaceUtils {
private NamespaceUtils() {
}
/**
* Creates a {@code NamespaceContext} for the specified method, based on {@link Namespaces @Namespaces} and {@link
* Namespace @Namespace} annotations.
*
* <p>This method will search for {@link Namespaces @Namespaces} and {@link Namespace @Namespace} annotation in the
* given method, its class, and its package, in reverse order. That is: package-level annotations are overridden by
* class-level annotations, which again are overridden by method-level annotations.
*
* @param method the method to create the namespace context for
* @return the namespace context
*/
public static NamespaceContext getNamespaceContext(Method method) {
Assert.notNull(method, "'method' must not be null");
SimpleNamespaceContext namespaceContext = new SimpleNamespaceContext();
Class<?> endpointClass = method.getDeclaringClass();
Package endpointPackage = endpointClass.getPackage();
if (endpointPackage != null) {
addNamespaceAnnotations(endpointPackage, namespaceContext);
}
addNamespaceAnnotations(endpointClass, namespaceContext);
addNamespaceAnnotations(method, namespaceContext);
return namespaceContext;
}
private static void addNamespaceAnnotations(AnnotatedElement annotatedElement,
SimpleNamespaceContext namespaceContext) {
if (annotatedElement.isAnnotationPresent(Namespaces.class)) {
Namespaces namespacesAnn = annotatedElement.getAnnotation(Namespaces.class);
for (Namespace namespaceAnn : namespacesAnn.value()) {
namespaceContext.bindNamespaceUri(namespaceAnn.prefix(), namespaceAnn.uri());
}
}
if (annotatedElement.isAnnotationPresent(Namespace.class)) {
Namespace namespaceAnn = annotatedElement.getAnnotation(Namespace.class);
namespaceContext.bindNamespaceUri(namespaceAnn.prefix(), namespaceAnn.uri());
}
}
}