Apache CXF example source code file (ClassResourceInfo.java)

This example Apache CXF source code file (ClassResourceInfo.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" ^TM.

Java - Apache CXF tags/keywords

annotation, annotation, arraylist, class, class, classresourceinfo, classresourceinfo, list, list, methoddispatcher, reflection, set, string, string, subresourcekey, threading, threads, uritemplate, util

The Apache CXF ClassResourceInfo.java source code

/**
 * 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.model;

import java.lang.annotation.Annotation;
import java.lang.reflect.Field;
import java.lang.reflect.Method;
import java.util.ArrayList;
import java.util.Collection;
import java.util.Collections;
import java.util.HashSet;
import java.util.List;
import java.util.Set;
import java.util.concurrent.ConcurrentHashMap;

import javax.ws.rs.Consumes;
import javax.ws.rs.Path;
import javax.ws.rs.Produces;
import javax.ws.rs.core.MediaType;

import org.apache.cxf.jaxrs.lifecycle.ResourceProvider;
import org.apache.cxf.jaxrs.utils.AnnotationUtils;
import org.apache.cxf.jaxrs.utils.InjectionUtils;
import org.apache.cxf.jaxrs.utils.JAXRSUtils;
import org.apache.cxf.jaxrs.utils.ResourceUtils;

public class ClassResourceInfo extends AbstractResourceInfo {
    
    private URITemplate uriTemplate;
    private MethodDispatcher methodDispatcher;
    private ResourceProvider resourceProvider;
    private ConcurrentHashMap<SubresourceKey, ClassResourceInfo> subResources 
        = new ConcurrentHashMap<SubresourceKey, ClassResourceInfo>();
   
    private List<Field> paramFields;
    private List<Method> paramMethods;
    private boolean enableStatic;
    private boolean createdFromModel; 
    private String consumesTypes;
    private String producesTypes;
    
    public ClassResourceInfo(Class<?> theResourceClass) {
        this(theResourceClass, false);
    }
    
    public ClassResourceInfo(ClassResourceInfo cri) {
        
        if (cri.isCreatedFromModel() && !InjectionUtils.isConcreteClass(cri.getServiceClass())) {
            this.root = cri.root;
            this.serviceClass = cri.serviceClass;
            this.uriTemplate = cri.uriTemplate;    
            this.methodDispatcher = new MethodDispatcher(cri.methodDispatcher, this);
            this.subResources = cri.subResources;
            this.paramFields = cri.paramFields;
            this.paramMethods = cri.paramMethods;
            this.enableStatic = true;
        } else {
            throw new IllegalArgumentException();
        }
        
    }
    
    public ClassResourceInfo(Class<?> theResourceClass, boolean theRoot) {
        this(theResourceClass, theResourceClass, theRoot);
    }
    
    public ClassResourceInfo(Class<?> theResourceClass, Class theServiceClass) {
        this(theResourceClass, theServiceClass, false);
    }
    
    public ClassResourceInfo(Class<?> theResourceClass, Class theServiceClass, boolean theRoot) {
        this(theResourceClass, theServiceClass, theRoot, false);
    }
    
    public ClassResourceInfo(Class<?> theResourceClass, Class theServiceClass, 
                             boolean theRoot, boolean enableStatic) {
        super(theResourceClass, theServiceClass, theRoot);
        this.enableStatic = enableStatic;
        if (root && resourceClass != null) {
            setParamField(serviceClass);
            setParamMethods(serviceClass);
        }
    }
    
    public ClassResourceInfo(Class<?> theResourceClass, Class theServiceClass, 
                             boolean theRoot, boolean enableStatic, boolean createdFromModel) {
        this(theResourceClass, theServiceClass, theRoot, enableStatic);
        this.createdFromModel = createdFromModel;
    }
    
    public ClassResourceInfo(Class<?> theResourceClass, Class c, 
                             boolean theRoot, boolean enableStatic,  boolean createdFromModel,
                             String consumesTypes, String producesTypes) {
        this(theResourceClass, theResourceClass, theRoot, enableStatic, createdFromModel);
        this.consumesTypes = consumesTypes;
        this.producesTypes = producesTypes;
    }
    
    public ClassResourceInfo findResource(Class<?> typedClass, Class instanceClass) {
        instanceClass = enableStatic ? typedClass : instanceClass;
        SubresourceKey key = new SubresourceKey(typedClass, instanceClass);
        return subResources.get(key);
    }
    
    public ClassResourceInfo getSubResource(Class<?> typedClass, Class instanceClass) {
        
        instanceClass = enableStatic ? typedClass : instanceClass;
        
        SubresourceKey key = new SubresourceKey(typedClass, instanceClass);
        ClassResourceInfo cri = subResources.get(key);
        if (cri == null && !enableStatic) {
            cri = ResourceUtils.createClassResourceInfo(typedClass, instanceClass, false, enableStatic);
            if (cri != null) {
                subResources.putIfAbsent(key, cri);
            }
        }
        return cri;
    }
    
    public Collection<ClassResourceInfo> getSubResources() {
        return Collections.unmodifiableCollection(subResources.values());
    }
    
    public Set<String> getAllowedMethods() {
        Set<String> methods = new HashSet();
        for (OperationResourceInfo o : methodDispatcher.getOperationResourceInfos()) {
            String method = o.getHttpMethod();
            if (method != null) {
                methods.add(method);
            }
        }
        return methods;
    }
    
    private void setParamField(Class<?> cls) {
        if (Object.class == cls || cls == null) {
            return;
        }
        for (Field f : cls.getDeclaredFields()) {
            for (Annotation a : f.getAnnotations()) {
                if (AnnotationUtils.isParamAnnotationClass(a.annotationType())) {
                    if (paramFields == null) {
                        paramFields = new ArrayList<Field>();
                    }
                    paramFields.add(f);
                }
            }
        }
        setParamField(cls.getSuperclass());
    }
    
    private void setParamMethods(Class<?> cls) {
        
        for (Method m : cls.getMethods()) {
        
            if (!m.getName().startsWith("set") || m.getParameterTypes().length != 1) {
                continue;
            }
            for (Annotation a : m.getAnnotations()) {
                if (AnnotationUtils.isParamAnnotationClass(a.annotationType())) {
                    checkParamMethod(m, AnnotationUtils.getAnnotationValue(a));
                    break;
                }
            }
        }
        Class<?>[] interfaces = cls.getInterfaces();
        for (Class<?> i : interfaces) {
            setParamMethods(i);
        }
    }

    public URITemplate getURITemplate() {
        return uriTemplate;
    }

    public void setURITemplate(URITemplate u) {
        uriTemplate = u;
    }

    public MethodDispatcher getMethodDispatcher() {
        return methodDispatcher;
    }

    public void setMethodDispatcher(MethodDispatcher md) {
        methodDispatcher = md;
    }

    public boolean hasSubResources() {
        return !subResources.isEmpty();
    }
    
    public void addSubClassResourceInfo(ClassResourceInfo cri) {
        subResources.putIfAbsent(new SubresourceKey(cri.getResourceClass(), 
                                            cri.getServiceClass()),
                                 cri);
    }
    
    public boolean isCreatedFromModel() {
        return createdFromModel;
    }
    
    public ResourceProvider getResourceProvider() {
        return resourceProvider;
    }

    public void setResourceProvider(ResourceProvider rp) {
        resourceProvider = rp;
    }
    
    public List<MediaType> getProduceMime() {
        if (producesTypes != null) {
            return JAXRSUtils.parseMediaTypes(producesTypes);
        }
        return JAXRSUtils.getProduceTypes(
             (Produces)AnnotationUtils.getClassAnnotation(getServiceClass(), Produces.class));
    }
    
    public List<MediaType> getConsumeMime() {
        if (consumesTypes != null) {
            return JAXRSUtils.parseMediaTypes(consumesTypes);
        }
        return JAXRSUtils.getConsumeTypes(
             (Consumes)AnnotationUtils.getClassAnnotation(getServiceClass(), Consumes.class));
    }
    
    public Path getPath() {
        return (Path)AnnotationUtils.getClassAnnotation(getServiceClass(), Path.class);
    }
    
    private void addParamMethod(Method m) {
        if (paramMethods == null) {
            paramMethods = new ArrayList<Method>();
        }
        paramMethods.add(m);
    }
    
    @SuppressWarnings("unchecked")
    public List<Method> getParameterMethods() {
        return paramMethods == null ? Collections.EMPTY_LIST 
                                    : Collections.unmodifiableList(paramMethods);
    }
    
    @SuppressWarnings("unchecked")
    public List<Field> getParameterFields() {
        return paramFields == null ? Collections.EMPTY_LIST 
                                    : Collections.unmodifiableList(paramFields);
    }
    
    private void checkParamMethod(Method m, String value) {
        if (m.getName().equalsIgnoreCase("set" + value)) {
            addParamMethod(m);
        }
    }
    
    @Override
    public boolean isSingleton() {
        return resourceProvider != null && resourceProvider.isSingleton();
    }
}