org.apache.cxf.jaxrs.utils.AnnotationUtils Maven / Gradle / Ivy
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* Licensed to the Apache Software Foundation (ASF) under one
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* 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
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* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
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*/
package org.apache.cxf.jaxrs.utils;
import java.lang.annotation.Annotation;
import java.lang.reflect.Method;
import java.util.HashSet;
import java.util.ResourceBundle;
import java.util.Set;
import java.util.logging.Logger;
import javax.servlet.ServletConfig;
import javax.servlet.ServletContext;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.ws.rs.Consumes;
import javax.ws.rs.CookieParam;
import javax.ws.rs.DefaultValue;
import javax.ws.rs.FormParam;
import javax.ws.rs.HeaderParam;
import javax.ws.rs.HttpMethod;
import javax.ws.rs.MatrixParam;
import javax.ws.rs.Path;
import javax.ws.rs.PathParam;
import javax.ws.rs.Produces;
import javax.ws.rs.QueryParam;
import javax.ws.rs.core.Application;
import javax.ws.rs.core.Context;
import javax.ws.rs.core.HttpHeaders;
import javax.ws.rs.core.Request;
import javax.ws.rs.core.SecurityContext;
import javax.ws.rs.core.UriInfo;
import javax.ws.rs.ext.ContextResolver;
import javax.ws.rs.ext.Providers;
import org.apache.cxf.common.i18n.BundleUtils;
import org.apache.cxf.common.logging.LogUtils;
import org.apache.cxf.jaxrs.ext.MessageContext;
public final class AnnotationUtils {
private static final Logger LOG = LogUtils.getL7dLogger(AnnotationUtils.class);
private static final ResourceBundle BUNDLE = BundleUtils.getBundle(AnnotationUtils.class);
private static final Set CONTEXT_CLASSES;
private static final Set PARAM_ANNOTATION_CLASSES;
private static final Set METHOD_ANNOTATION_CLASSES;
static {
CONTEXT_CLASSES = initContextClasses();
PARAM_ANNOTATION_CLASSES = initParamAnnotationClasses();
METHOD_ANNOTATION_CLASSES = initMethodAnnotationClasses();
}
private AnnotationUtils() {
}
private static Set initContextClasses() {
Set classes = new HashSet();
classes.add(UriInfo.class);
classes.add(SecurityContext.class);
classes.add(HttpHeaders.class);
classes.add(ContextResolver.class);
classes.add(Providers.class);
classes.add(Request.class);
classes.add(Application.class);
// Servlet API
try {
classes.add(HttpServletRequest.class);
classes.add(HttpServletResponse.class);
classes.add(ServletConfig.class);
classes.add(ServletContext.class);
} catch (Throwable ex) {
// it is not a problem on the client side and the exception will be
// thrown later on if the injection of one of these contexts will be
// attempted on the server side
LOG.fine(new org.apache.cxf.common.i18n.Message("NO_SERVLET_API", BUNDLE).toString());
}
// CXF-specific
classes.add(MessageContext.class);
return classes;
}
private static Set initParamAnnotationClasses() {
Set classes = new HashSet();
classes.add(PathParam.class);
classes.add(QueryParam.class);
classes.add(MatrixParam.class);
classes.add(HeaderParam.class);
classes.add(CookieParam.class);
classes.add(FormParam.class);
return classes;
}
private static Set initMethodAnnotationClasses() {
Set classes = new HashSet();
classes.add(HttpMethod.class);
classes.add(Path.class);
classes.add(Produces.class);
classes.add(Consumes.class);
return classes;
}
public static boolean isContextClass(Class contextClass) {
return CONTEXT_CLASSES.contains(contextClass);
}
public static boolean isParamAnnotationClass(Class annotationClass) {
return PARAM_ANNOTATION_CLASSES.contains(annotationClass);
}
public static boolean isValidParamAnnotationClass(Class annotationClass) {
return PARAM_ANNOTATION_CLASSES.contains(annotationClass) || Context.class == annotationClass;
}
public static boolean isValidParamAnnotations(Annotation[] paramAnnotations) {
for (Annotation a : paramAnnotations) {
if (AnnotationUtils.isValidParamAnnotationClass(a.annotationType())) {
return true;
}
}
return false;
}
public static boolean isMethodAnnotation(Annotation a) {
return METHOD_ANNOTATION_CLASSES.contains(a.annotationType())
|| a.annotationType().getAnnotation(HttpMethod.class) != null;
}
public static String getAnnotationValue(Annotation a) {
String value = null;
if (a.annotationType() == PathParam.class) {
value = ((PathParam)a).value();
} else if (a.annotationType() == QueryParam.class) {
value = ((QueryParam)a).value();
} else if (a.annotationType() == MatrixParam.class) {
value = ((MatrixParam)a).value();
} else if (a.annotationType() == HeaderParam.class) {
value = ((HeaderParam)a).value();
} else if (a.annotationType() == CookieParam.class) {
value = ((CookieParam)a).value();
} else if (a.annotationType() == FormParam.class) {
value = ((FormParam)a).value();
}
return value;
}
public static T getAnnotation(Annotation[] anns, Class type) {
if (anns == null) {
return null;
}
for (Annotation a : anns) {
if (a.annotationType() == type) {
return type.cast(a);
}
}
return null;
}
public static Method getAnnotatedMethod(Method m) {
Method annotatedMethod = doGetAnnotatedMethod(m);
return annotatedMethod == null ? m : annotatedMethod;
}
private static Method doGetAnnotatedMethod(Method m) {
if (m == null) {
return m;
}
for (Annotation a : m.getAnnotations()) {
if (AnnotationUtils.isMethodAnnotation(a)) {
return m;
}
}
for (Annotation[] paramAnnotations : m.getParameterAnnotations()) {
if (isValidParamAnnotations(paramAnnotations)) {
return m;
}
}
Class superC = m.getDeclaringClass().getSuperclass();
if (superC != null && Object.class != superC) {
try {
Method method = doGetAnnotatedMethod(superC.getMethod(m.getName(), m.getParameterTypes()));
if (method != null) {
return method;
}
} catch (NoSuchMethodException ex) {
// ignore
}
}
for (Class i : m.getDeclaringClass().getInterfaces()) {
try {
Method method = doGetAnnotatedMethod(i.getMethod(m.getName(), m.getParameterTypes()));
if (method != null) {
return method;
}
} catch (NoSuchMethodException ex) {
// ignore
}
}
return null;
}
public static String getHttpMethodValue(Method m) {
for (Annotation a : m.getAnnotations()) {
HttpMethod httpM = a.annotationType().getAnnotation(HttpMethod.class);
if (httpM != null) {
return httpM.value();
}
}
return null;
}
public static A getMethodAnnotation(Method m, Class aClass) {
return m == null ? null : m.getAnnotation(aClass);
}
public static A getClassAnnotation(Class c, Class aClass) {
if (c == null) {
return null;
}
A p = c.getAnnotation(aClass);
if (p != null) {
return p;
}
p = getClassAnnotation(c.getSuperclass(), aClass);
if (p != null) {
return p;
}
// finally try the first one on the interface
for (Class i : c.getInterfaces()) {
p = getClassAnnotation(i, aClass);
if (p != null) {
return p;
}
}
return null;
}
public static String getDefaultParameterValue(Annotation[] anns) {
DefaultValue dv = AnnotationUtils.getAnnotation(anns, DefaultValue.class);
return dv != null ? dv.value() : null;
}
}