handlermethodmetaargsfactory.java

一个非常好的FRAMWRK!是一个外国组织做的!不!

/**
 * Copyright 2003-2005 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 com.jdon.model.handler;

import com.jdon.util.Debug;
import com.jdon.bussinessproxy.meta.MethodMetaArgs;
import com.jdon.controller.events.EventModel;

/**
 * Meta Method Factory. in jdonframework.xml:
 * 
 * <handler><service ref="accountService"> <initMethod name="initAccount" />
 * <getMethod name="getAccount" /> <createMethod name="insertAccount" />
 * <updateMethod name="updateAccount" /> <deleteMethod name="deleteAccount" />
 * </service> </handler>
 * 
 * 
 * 根据HandlerMetaDef生成相应的Mehtod和参数
 * 
 * 
 * @author banq
 */
public class HandlerMethodMetaArgsFactory {
    private final static String module = HandlerMethodMetaArgsFactory.class.getName();

    /**
     * create init method
     * 
     * @param handlerMetaDef
     * @return MethodMetaArgs instance
     */
    public MethodMetaArgs createinitMethod(HandlerMetaDef handlerMetaDef) {
        MethodMetaArgs methodMetaArgs = null;
        try {
            String p_methodName = handlerMetaDef.getInitMethod();
            if (p_methodName == null) return null;
            Class[] paramTypes = new Class[1];
            methodMetaArgs = new MethodMetaArgs(p_methodName, null, null);

        } catch (Exception ex) {
            Debug.logError(" getinitMethod error: " + ex, module);
        }
        return methodMetaArgs;
    }

    /**
     * create find method
     * the service's find method parameter type must be String type
     * 
     * @param handlerMetaDef
     * @param keyValue
     * @return MethodMetaArgs instance
     */
    public MethodMetaArgs createfindMethod(HandlerMetaDef handlerMetaDef,
            String keyValue) {
        MethodMetaArgs methodMetaArgs = null;
        try {
            String p_methodName = handlerMetaDef.getFindMethod();
            Class[] paramTypes = new Class[1];
            paramTypes[0] = String.class;
            Object[] p_args = new String[1];
            p_args[0] = keyValue;
            methodMetaArgs = new MethodMetaArgs(p_methodName, paramTypes,
                    p_args);

        } catch (Exception ex) {
            Debug.logError(" getfindMethod error: " + ex, module);
        }
        return methodMetaArgs;
    }

    /**
     * create insert/create method
     * the service/s method parameter type must be  EventModel type;
     * 
     * @param handlerMetaDef
     * @param em
     * @return MethodMetaArgs instance
     */
    public MethodMetaArgs createCreateMethod(HandlerMetaDef handlerMetaDef,
            EventModel em) {
        MethodMetaArgs methodMetaArgs = null;
        try {
            String p_methodName = handlerMetaDef.getCreateMethod();
            Class[] paramTypes = new Class[1];
            paramTypes[0] = EventModel.class;
            Object[] p_args = new EventModel[1];
            p_args[0] = em;
            methodMetaArgs = new MethodMetaArgs(p_methodName, paramTypes,
                    p_args);

        } catch (Exception ex) {
            Debug.logError(" createCreateMethod error: " + ex, module);
        }
        return methodMetaArgs;
    }

    /**
     * 
     * create update method
     * the service/s method parameter type must be  EventModel type;
     *  
     * @param handlerMetaDef
     * @param em
     * @return MethodMetaArgs instance
     */
    public MethodMetaArgs createUpdateMethod(HandlerMetaDef handlerMetaDef,
            EventModel em) {
        MethodMetaArgs methodMetaArgs = null;
        try {
            String p_methodName = handlerMetaDef.getUpdateMethod();
            Class[] paramTypes = new Class[1];
            paramTypes[0] = EventModel.class;
            Object[] p_args = new EventModel[1];
            p_args[0] = em;
            methodMetaArgs = new MethodMetaArgs(p_methodName, paramTypes,
                    p_args);

        } catch (Exception ex) {
            Debug.logError(" createUpdateMethod error: " + ex, module);
        }
        return methodMetaArgs;
    }

    /**
     * create update method
     * the service/s method parameter type must be  EventModel type;
     * 
     * @param handlerMetaDef
     * @param em EventModel 
     * @return MethodMetaArgs instance
     */
    public MethodMetaArgs createDeleteMethod(HandlerMetaDef handlerMetaDef,
            EventModel em) {
        MethodMetaArgs methodMetaArgs = null;
        try {
            String p_methodName = handlerMetaDef.getDeleteMethod();
            Class[] paramTypes = new Class[1];
            paramTypes[0] = EventModel.class;
            Object[] p_args = new EventModel[1];
            p_args[0] = em;
            methodMetaArgs = new MethodMetaArgs(p_methodName, paramTypes,
                    p_args);

        } catch (Exception ex) {
            Debug.logError(" createDeleteMethod error: " + ex, module);
        }
        return methodMetaArgs;
    }

}