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/*
 * Copyright (C) 2011 Benoit GUEROUT  and Yves AMSELLEM 
 *
 * 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 org.jongo.bson;

import com.mongodb.*;
import org.bson.BSONObject;
import org.bson.io.OutputBuffer;

import java.io.IOException;

public class BsonDBEncoder implements DBEncoder {

    public final static DBEncoderFactory FACTORY = new BsonDBEncoderFactory();

    private BsonDBEncoder() {
    }

    public int writeObject(final OutputBuffer buf, BSONObject o) {

        if (!(o instanceof LazyDBObject)) {
            return DefaultDBEncoder.FACTORY.create().writeObject(buf, o);
        }

        try {
            return ((LazyDBObject) o).pipe(buf);
        } catch (IOException e) {
            throw new MongoException("Exception serializing a LazyDBObject", e);
        }
    }

    private static class BsonDBEncoderFactory implements DBEncoderFactory {
        public DBEncoder create() {
            return new BsonDBEncoder();
        }

    }
}