com.btoddb.trellis.common.serialization.JavaSerializer.java Source code

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Here is the source code for com.btoddb.trellis.common.serialization.JavaSerializer.java

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/*
 * Copyright 2013 B. Todd Burruss
 *
 * 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.btoddb.trellis.common.serialization;

import java.io.IOException;
import java.io.InputStream;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;
import java.io.OutputStream;
import java.io.Serializable;
import java.nio.ByteBuffer;

import org.apache.commons.io.output.ByteArrayOutputStream;

import com.btoddb.trellis.common.TrellisException;

public class JavaSerializer implements TrellisSerializer<Serializable> {

    public JavaSerializer() {
    }

    @Override
    public Serializable deserialize(final ByteBuffer bb) {
        try {
            ObjectInputStream ois;
            ois = new ObjectInputStream(new InputStream() {
                @Override
                public int read() throws IOException {
                    return bb.get();
                }
            });
            Object obj = ois.readObject();
            return (Serializable) obj;
        } catch (IOException e) {
            throw new TrellisException("exception while deserializing Java Serializable object", e);
        } catch (ClassNotFoundException e) {
            throw new TrellisException("exception while deserializing Java Serializable object", e);
        }
    }

    @Override
    public ByteBuffer serialize(final ByteBuffer bb, Serializable obj) {
        OutputStream os = new OutputStream() {
            @Override
            public void write(int oneByte) throws IOException {
                bb.put((byte) oneByte);
            }
        };

        serializeToOutputStream(obj, os);
        return bb;
    }

    private void serializeToOutputStream(Serializable obj, OutputStream os) {
        try {
            ObjectOutputStream oos = new ObjectOutputStream(os);
            oos.writeObject(obj);
            oos.close();
        } catch (IOException e) {
            throw new TrellisException("exception while serializing Java Serializable object", e);
        }
    }

    @Override
    public String getTypeId() {
        return "JSER";
    }

    @SuppressWarnings("rawtypes")
    @Override
    public Class getType() {
        // means to ignore when looking up serializers by class
        return null;
    }

    @Override
    public int calculateSerializedSize(Serializable obj) {
        ByteArrayOutputStream baos = new ByteArrayOutputStream();
        serializeToOutputStream(obj, baos);
        return baos.size();
    }

}