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A tool to create Java marshallers to and from bson. Currently used in a data access layer serialize Json to Bson for MongoDB storage.

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package com.jrodeo.bson.marshallers;

import org.bson.BsonBinary;
import org.bson.BsonBinarySubType;
import org.bson.BsonReader;
import org.bson.BsonWriter;

import java.nio.ByteBuffer;
import java.util.UUID;

/**
 * A hand coded Marshaller to serialize java.util.UUID.
 * Note: the bson is setup to work with BsonBinarySubType.UUID_STANDARD
 * for MongoDB.
 */
public class UUIDMarshaller extends AbstractSimpleMarshaller {

    @Override
    public Class getForClass() {
        return UUID.class;
    }

    public void write(BsonWriter writer, UUID value) {
        byte[] bytes = new byte[16];
        ByteBuffer byteBuffer = ByteBuffer.wrap(bytes);
        byteBuffer.putLong(value.getMostSignificantBits());
        byteBuffer.putLong(value.getLeastSignificantBits());
        BsonBinary binary = new BsonBinary(BsonBinarySubType.UUID_STANDARD,
                bytes);
        writer.writeBinaryData(binary);
    }

    public UUID read(BsonReader reader) {
        BsonBinary binary = reader.readBinaryData();
        byte[] bytes = binary.getData();
        ByteBuffer byteBuffer = ByteBuffer.wrap(bytes);
        UUID uuid = new UUID(byteBuffer.getLong(), byteBuffer.getLong());
        return uuid;
    }

}