com.alachisoft.ncache.serialization.standard.io.surrogates.StringSerializationSurrogate Maven / Gradle / Ivy

Go to download
Show more of this group Show more artifacts with this name
Show all versions of nc-serialization Show documentation
Internal package of Alachisoft.
There is a newer version: 5.3.3
/*
 * @(#)StringSerializationSurrogate.java	1.0
 *
 * Created on September 18, 2008, 12:59 PM
 *
 * Copyright 2008 NeXtreme Innovations, Inc. All rights reserved.
 * "NeXtreme Innovations" PROPRIETARY/CONFIDENTIAL. Use is subject
 * to license terms.
 */
package com.alachisoft.ncache.serialization.standard.io.surrogates;

import com.alachisoft.ncache.serialization.core.io.BlockDataInputStream;
import com.alachisoft.ncache.serialization.core.io.BlockDataOutputStream;
import com.alachisoft.ncache.serialization.core.io.NCacheObjectInput;
import com.alachisoft.ncache.serialization.core.io.NCacheObjectOutput;
import com.alachisoft.ncache.serialization.core.io.surrogates.*;

import java.io.IOException;

/**
 * StringSerializationSurrogate is responsible for writing and reading
 * instances of String class.
 *
 * @version 1.0, September 18, 2008
 */
public class StringSerializationSurrogate
        extends SerializationSurrogateBase
        implements SerializationSurrogate, BuiltinSerializationSurrogate {

    /**
     * Creates a new instance of StringSerializationSurrogate
     */
    public StringSerializationSurrogate() {
        super(String.class);
    }

    /**
     * Read and return an object. The class that implements this interface
     * defines where the object is "read" from.
     *
     * @param input the stream to read data from in order to restore the object.
     * @return the object read from the stream
     * @throws java.lang.ClassNotFoundException If the class of a serialized
     *                                          object cannot be found.
     * @throws NCacheIOException                If any of the usual Input/Output
     *                                          related exceptions occur.
     */
    public Object readObject(NCacheObjectInput input)
            throws NCacheInstantiationException, NCacheIOException {
        BlockDataInputStream bin = (BlockDataInputStream) input.getContext().getUserItem("__bin");
        try {
            if (bin != null) {
                return bin.readUTF();
            } else {
                return input.readUTF();
            }
        } catch (IOException ex) {
            throw new NCacheIOException(ex);
        }
    }

    /**
     * Write an object to the underlying storage or stream.  The
     * class that implements this interface defines how the object is
     * written.
     *
     * @param output the stream to write the object to.
     * @param graph  the object to write .
     * @throws NCacheIOException Any of the usual Input/Output related exceptions.
     */
    public void writeObject(NCacheObjectOutput output, Object graph)
            throws NCacheIOException {
        BlockDataOutputStream bout = (BlockDataOutputStream) output.getContext().getUserItem("__bout");
        try {
            if (bout != null) {
                bout.writeUTF((String) graph);
            } else {
                output.writeUTF((String) graph);
            }
        } catch (IOException ex) {
            throw new NCacheIOException(ex);
        }
    }

    public void skipObject(NCacheObjectInput input) throws NCacheInstantiationException, NCacheIOException {
        try {
            input.skipUTF();
        } catch (IOException ex) {
            throw new NCacheIOException(ex);
        }
    }
}