Package org.apache.cxf.tools.java2wsdl.processor

Source Code of org.apache.cxf.tools.java2wsdl.processor.FrontendFactory

/**
* 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.tools.java2wsdl.processor;

import java.lang.reflect.Method;
import java.lang.reflect.Modifier;
import java.util.ArrayList;
import java.util.List;

import javax.jws.WebMethod;
import javax.jws.WebResult;
import javax.jws.WebService;
import javax.jws.soap.SOAPBinding;
import javax.xml.ws.WebServiceProvider;

import org.apache.cxf.tools.java2wsdl.processor.internal.jaxws.WrapperUtil;
import org.apache.cxf.tools.util.AnnotationUtil;

public final class FrontendFactory {
    private static FrontendFactory instance;
    private Class serviceClass;
    private List<Method> wsMethods;
    private Class[] annotations = new Class[] {SOAPBinding.class,
                                               WebService.class,
                                               WebServiceProvider.class};

    public enum Style {
        Jaxws,
        Simple
    }

    private FrontendFactory() {
    }

    public static FrontendFactory getInstance() {
        if (instance == null) {
            instance = new FrontendFactory();
        }
        return instance;
    }

    @SuppressWarnings("unchecked")
    private boolean isJaxws() {
        if (serviceClass == null) {
            return true;
        }
        for (Class annotation : annotations) {
            if (serviceClass.getAnnotation(annotation) != null) {
                return true;
            }
        }
        if (isJAXWSAnnotationExists()) {
            return true;
        }
        return false;
    }

    private boolean isJAXWSAnnotationExists() {
        for (Method method : wsMethods) {
            if (WrapperUtil.isWrapperClassExists(method)) {
                return true;
            }
            WebMethod m = AnnotationUtil.getPrivMethodAnnotation(method, WebMethod.class);
            if (m != null) {
                return true;
            }
            WebResult res = AnnotationUtil.getPrivMethodAnnotation(method, WebResult.class);
            if (res != null) {
                return true;
            }
        }
        return false;
    }

    private List<Method> getWSMethods() {
        List<Method> methods = new ArrayList<Method>();
        for (Method method : serviceClass.getMethods()) {
            if (method.getDeclaringClass().equals(Object.class)
                || !Modifier.isPublic(method.getModifiers())
                || isExcluced(method)) {
                continue;
            }
            methods.add(method);
        }
        return methods;
    }

    private boolean isExcluced(Method method) {
        WebMethod webMethod = AnnotationUtil.getPrivMethodAnnotation(method, WebMethod.class);
        if (webMethod != null && webMethod.exclude()) {
            return true;
        }
        return false;
    }

    public Style discoverStyle() {
        if (isJaxws()) {
            return Style.Jaxws;
        }
        return Style.Simple;
    }

    public void setServiceClass(Class c) {
        this.serviceClass = c;
        if (c != null) {
            this.wsMethods = getWSMethods();
        }
    }
}
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