at.spardat.xma.serializer.BinaryDeserializer Maven / Gradle / Ivy
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/*******************************************************************************
* Copyright (c) 2003, 2007 s IT Solutions AT Spardat GmbH .
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* s IT Solutions AT Spardat GmbH - initial API and implementation
*******************************************************************************/
//@(#) $Id: BinaryDeserializer.java 2089 2007-11-28 13:56:13Z s3460 $
package at.spardat.xma.serializer;
import java.io.ByteArrayInputStream;
import java.io.IOException;
import java.io.ObjectInput;
import java.io.ObjectInputStream;
import at.spardat.enterprise.exc.SysException;
/**
* Deserializer implementation that uses the Java Serialization Mechanism
*
* @author YSD, 11.02.2005
*/
public class BinaryDeserializer implements Deserializer {
// used to read the construction time provided byte array
private ByteArrayInputStream bin_;
/**
* the instance variable seen by objects implementing Synchronization.internalize.
*/
public ObjectInput objIn_;
/**
* Constructor
*
* @param data serialized array of data
* @param length first length bytes in data are used.
*/
public BinaryDeserializer (byte[] data, int length) {
this (data, 0, length);
}
/**
* Constructor
*
* @param data serialized array of data
*/
public BinaryDeserializer (byte[] data) {
this (data, 0, data.length);
}
/**
* Constructor
*
* @param data input array
* @param offset offset in the array where data starts
* @param length number of bytes
*/
public BinaryDeserializer (byte[] data, int offset, int length) {
try {
bin_ = new ByteArrayInputStream (data, offset, length);
objIn_ = new ObjectInputStream (bin_);
} catch (IOException x) {
throw new SysException (x);
}
}
/**
* @see at.spardat.xma.serializer.XmaInput#readString()
*/
public String readString() throws IOException {
return objIn_.readUTF();
}
/**
* @see at.spardat.xma.serializer.XmaInput#readStringN()
*/
public String readStringN() throws IOException {
boolean isNull = objIn_.readBoolean();
if (!isNull) return objIn_.readUTF();
else return null;
}
/**
* @see at.spardat.xma.serializer.XmaInput#readInt()
*/
public int readInt() throws IOException {
return objIn_.readInt();
}
/**
* @see at.spardat.xma.serializer.XmaInput#readLong()
*/
public long readLong() throws IOException {
return objIn_.readLong();
}
/**
* @see at.spardat.xma.serializer.XmaInput#readShort()
*/
public short readShort() throws IOException {
return objIn_.readShort();
}
/**
* @see at.spardat.xma.serializer.XmaInput#readBoolean()
*/
public boolean readBoolean() throws IOException {
return objIn_.readBoolean();
}
/**
* @see at.spardat.xma.serializer.XmaInput#readByte()
*/
public byte readByte() throws IOException {
return objIn_.readByte();
}
/**
* @see at.spardat.xma.serializer.XmaInput#readSerializedBytes()
*/
public byte[] readSerializedBytes() throws IOException {
int len = objIn_.readInt();
byte[] result = new byte[len];
for (int i=0; i