FloatArrayCodec.java

/**
 * Copyright 2014 Duan Bingnan
 * 
 * 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.pinus4j.serializer.codec.impl;

import org.pinus4j.serializer.codec.Codec;
import org.pinus4j.serializer.codec.CodecConfig;
import org.pinus4j.serializer.codec.CodecType;
import org.pinus4j.serializer.io.DataInput;
import org.pinus4j.serializer.io.DataOutput;

public class FloatArrayCodec implements Codec<float[]>
{

    public void encode(DataOutput output, float[] v, CodecConfig config)
    {
        // write type
        output.writeByte(CodecType.TYPE_ARRAY_FLOAT);

        // write is null
        if (v == null) {
            output.writeByte(CodecType.NULL);
            return;
        }
        output.writeByte(CodecType.NOT_NULL);

        // write length
        int length = v.length;
        output.writeVInt(length);

        // write value
        for (int i=0; i<length; i++) {
            output.writeFloat(v[i]);
        }
    }

    public float[] decode(DataInput input, CodecConfig config)
    {
        // read is null
        if (input.readByte() == CodecType.NULL) {
            return null;
        }

        // read length
        int length = input.readVInt();
        float[] array = new float[length];
        for (int i=0; i<length; i++) {
            array[i] = input.readFloat();
        }
        return array;
    }

}