com.qumoon.commons.BeanMapper.java Source code

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Here is the source code for com.qumoon.commons.BeanMapper.java

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/*
 * Copyright (c) 2013 Raycloud.
 *
 * 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.qumoon.commons;

import com.google.common.collect.Lists;
import com.google.protobuf.Descriptors;

import org.apache.commons.beanutils.PropertyUtils;
import org.dozer.DozerBeanMapper;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import java.lang.reflect.Field;
import java.math.BigDecimal;
import java.util.Collection;
import java.util.Date;
import java.util.List;

/**
 * ??Dozer, ?Bean<->BeanMapper.: <p/> <ul> <li>?Mapper?.</li> <li>?.</li>
 * <li>??Collection.</li> <li>BA?B?.</li> </ul>
 *
 * @author kevin
 */
public class BeanMapper {

    private static Logger logger = LoggerFactory.getLogger(BeanMapper.class);
    /**
     * ?Dozer?, ????DozerMapper?.
     */
    private static DozerBeanMapper dozer = new DozerBeanMapper();

    /**
     * Dozer?.
     */
    public static <T> T map(Object source, Class<T> destinationClass) {
        return dozer.map(source, destinationClass);
    }

    /**
     * Dozer?Collection.
     */
    public static <T> List<T> mapList(Collection sourceList, Class<T> destinationClass) {
        List<T> destinationList = Lists.newArrayList();
        for (Object sourceObject : sourceList) {
            T destinationObject = dozer.map(sourceObject, destinationClass);
            destinationList.add(destinationObject);
        }
        return destinationList;
    }

    /**
     * DozerA?B.
     */
    public static void copy(Object source, Object destinationObject) {
        dozer.map(source, destinationObject);
    }

    public static <T extends com.google.protobuf.GeneratedMessage> T convertBean2Proto(
            com.google.protobuf.GeneratedMessage.Builder message, Object srcObject) throws Exception {
        for (Field srcField : srcObject.getClass().getDeclaredFields()) {
            Object value = PropertyUtils.getProperty(srcObject, srcField.getName());
            if (value == null) {
                continue;
            }
            Descriptors.FieldDescriptor fd = message.getDescriptorForType().findFieldByName(srcField.getName());
            if (null == fd) {
                continue;
            }
            if (srcField.getType() == BigDecimal.class) {
                message.setField(fd, ((BigDecimal) value).toString());
                continue;
            } else {
                if (srcField.getType() == Date.class) {
                    message.setField(fd, ((Date) value).getTime());
                    continue;
                } else {
                    message.setField(fd, value);
                }
            }
        }
        return (T) message.build();
    }

    public static <T> T convertProto2Bean(com.google.protobuf.GeneratedMessage message, T descObject,
            Class srcClass) {
        for (Field srcField : srcClass.getDeclaredFields()) {
            Descriptors.FieldDescriptor fd = message.getDescriptorForType().findFieldByName(srcField.getName());
            if (null == fd) {
                continue;
            }
            try {
                String fieldStrValue = String.valueOf(message.getField(fd));
                if (fieldStrValue.isEmpty()) {
                    continue;
                }
                if (srcField.getType() == BigDecimal.class) {
                    PropertyUtils.setProperty(descObject, srcField.getName(), new BigDecimal(fieldStrValue));
                } else {
                    if (srcField.getType() == Date.class) {
                        PropertyUtils.setProperty(descObject, srcField.getName(),
                                new Date((Long) (message.getField(fd))));
                    } else {
                        if (srcField.getType() == Byte.class) {
                            PropertyUtils.setProperty(descObject, srcField.getName(), Byte.valueOf(fieldStrValue));
                        } else {
                            PropertyUtils.setProperty(descObject, srcField.getName(), message.getField(fd));
                        }
                    }
                }
            } catch (Exception e) {
                logger.error(e.getMessage());
            } finally {
                continue;
            }
        }
        return descObject;
    }
}