DecoderFactory.java

/*
 * Copyright (c) www.bugull.com
 * 
 * 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 net.tooan.ynpay.third.mongodb.decoder;

import com.mongodb.DBObject;
import net.tooan.ynpay.third.mongodb.annotations.*;

import java.lang.reflect.Field;

/**
 * @author Frank Wen(xbwen@hotmail.com)
 */
public final class DecoderFactory {

    public static Decoder create(Field field, DBObject dbo) {
        Decoder decoder = null;
        if (field.getAnnotation(Id.class) != null) {
            decoder = new IdDecoder(field, dbo);
        } else if (field.getAnnotation(Embed.class) != null) {
            decoder = new EmbedDecoder(field, dbo);
        } else if (field.getAnnotation(EmbedList.class) != null) {
            decoder = new EmbedListDecoder(field, dbo);
        } else if (field.getAnnotation(Ref.class) != null) {
            decoder = new RefDecoder(field, dbo);
        } else if (field.getAnnotation(RefList.class) != null) {
            decoder = new RefListDecoder(field, dbo);
        } else if (field.getAnnotation(Ignore.class) != null) {
            decoder = null;
        } else {
            decoder = new PropertyDecoder(field, dbo);
        }
        return decoder;
    }

}