/**
* 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.cxf.jaxrs.utils;
import java.lang.annotation.Annotation;
import java.lang.reflect.Constructor;
import java.lang.reflect.Method;
import java.util.Collections;
import java.util.Comparator;
import java.util.LinkedList;
import java.util.List;
import java.util.ResourceBundle;
import java.util.logging.Logger;
import javax.ws.rs.Path;
import javax.ws.rs.core.Context;
import org.apache.cxf.common.i18n.BundleUtils;
import org.apache.cxf.common.logging.LogUtils;
import org.apache.cxf.jaxrs.model.ClassResourceInfo;
import org.apache.cxf.jaxrs.model.MethodDispatcher;
import org.apache.cxf.jaxrs.model.OperationResourceInfo;
import org.apache.cxf.jaxrs.model.URITemplate;
public final class ResourceUtils {
private static final Logger LOG = LogUtils.getL7dLogger(ResourceUtils.class);
private static final ResourceBundle BUNDLE = BundleUtils.getBundle(ResourceUtils.class);
private ResourceUtils() {
}
public static ClassResourceInfo createClassResourceInfo(
final Class<?> rClass, final Class<?> sClass, boolean root, boolean enableStatic) {
ClassResourceInfo cri = new ClassResourceInfo(rClass, sClass, root, enableStatic);
if (root) {
URITemplate t = URITemplate.createTemplate(cri, cri.getPath());
cri.setURITemplate(t);
}
evaluateResourceClass(cri, enableStatic);
return checkMethodDispatcher(cri) ? cri : null;
}
private static void evaluateResourceClass(ClassResourceInfo cri, boolean enableStatic) {
MethodDispatcher md = new MethodDispatcher();
for (Method m : cri.getServiceClass().getMethods()) {
Method annotatedMethod = AnnotationUtils.getAnnotatedMethod(m);
String httpMethod = AnnotationUtils.getHttpMethodValue(annotatedMethod);
Path path = (Path)AnnotationUtils.getMethodAnnotation(annotatedMethod, Path.class);
if (httpMethod != null || path != null) {
md.bind(createOperationInfo(m, annotatedMethod, cri, path, httpMethod), m);
if (httpMethod == null) {
// subresource locator
Class<?> subClass = m.getReturnType();
if (enableStatic) {
ClassResourceInfo subCri = cri.findResource(subClass, subClass);
if (subCri == null) {
subCri = subClass == cri.getServiceClass() ? cri
: createClassResourceInfo(subClass, subClass, false, enableStatic);
}
if (subCri != null) {
cri.addSubClassResourceInfo(subCri);
}
}
}
}
}
cri.setMethodDispatcher(md);
}
public static Constructor findResourceConstructor(Class<?> resourceClass, boolean perRequest) {
List<Constructor> cs = new LinkedList<Constructor>();
for (Constructor c : resourceClass.getConstructors()) {
Class<?>[] params = c.getParameterTypes();
Annotation[][] anns = c.getParameterAnnotations();
boolean match = true;
for (int i = 0; i < params.length; i++) {
if (!perRequest) {
if (AnnotationUtils.getAnnotation(anns[i], Context.class) == null
|| !AnnotationUtils.isContextClass(params[i])) {
match = false;
break;
}
} else if (!AnnotationUtils.isValidParamAnnotations(anns[i])) {
match = false;
break;
}
}
if (match) {
cs.add(c);
}
}
Collections.sort(cs, new Comparator<Constructor>() {
public int compare(Constructor c1, Constructor c2) {
int p1 = c1.getParameterTypes().length;
int p2 = c2.getParameterTypes().length;
return p1 > p2 ? -1 : p1 < p2 ? 1 : 0;
}
});
return cs.size() == 0 ? null : cs.get(0);
}
private static OperationResourceInfo createOperationInfo(Method m, Method annotatedMethod,
ClassResourceInfo cri, Path path, String httpMethod) {
OperationResourceInfo ori = new OperationResourceInfo(m, cri);
URITemplate t =
URITemplate.createTemplate(cri, path);
ori.setURITemplate(t);
ori.setHttpMethod(httpMethod);
ori.setAnnotatedMethod(annotatedMethod);
return ori;
}
private static boolean checkMethodDispatcher(ClassResourceInfo cr) {
if (cr.getMethodDispatcher().getOperationResourceInfos().isEmpty()) {
LOG.warning(new org.apache.cxf.common.i18n.Message("NO_RESOURCE_OP_EXC",
BUNDLE,
cr.getServiceClass().getName()).toString());
return false;
}
return true;
}
}