futils
Class SerialUtils

java.lang.Object
  futils.SerialUtils

public class SerialUtils
extends java.lang.Object

Constructor Summary

SerialUtils()

Method Summary

static byte[]	getBytes(java.io.Serializable obj) Convert an object that is Serializable into an array of byte
static byte[]	getGzBytes(java.io.Serializable obj) This is the inverse of the getGZObject method
static java.lang.Object	getGzObject(byte[] b) A means of implementing persistance using gzipped byte arrays
static java.lang.Object	getObject(byte[] b) The inverse of the getBytes method, this reconstitutes and object
static void	main(java.lang.String[] args)
static void	print(Customer[] c) This will print all the customers in a list.
static java.lang.Object	readGzippedObject()
static java.lang.String	readGzipString() Takes file input that is compressed and uncompresses it.
static java.lang.Object	readObjectUncompressed()
static void	saveGzipObject(java.lang.Object o)
static void	saveObjectUncompressed(java.lang.Object o)
static void	saveReadGzipObjectTest()
static void	testReadGzipObject()
static void	testReadWriteGzipString()
static void	testSaveGzipString()
static void	testTheTest()
static void	writeGzipString(java.lang.String s)

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

SerialUtils

public SerialUtils()

Method Detail

testReadGzipObject

public static void testReadGzipObject()

readGzippedObject

public static java.lang.Object readGzippedObject()
                                          throws java.io.IOException,
                                                 java.io.FileNotFoundException,
                                                 java.lang.ClassNotFoundException

Throws:

java.io.IOException

java.io.FileNotFoundException

java.lang.ClassNotFoundException

readObjectUncompressed

public static java.lang.Object readObjectUncompressed()
                                               throws java.io.IOException,
                                                      java.io.FileNotFoundException,
                                                      java.lang.ClassNotFoundException

Throws:

java.io.IOException

java.io.FileNotFoundException

java.lang.ClassNotFoundException

saveGzipObject

public static void saveGzipObject(java.lang.Object o)
                           throws java.io.IOException

Throws:

java.io.IOException

saveReadGzipObjectTest

public static void saveReadGzipObjectTest()

testSaveGzipString

public static void testSaveGzipString()

testReadWriteGzipString

public static void testReadWriteGzipString()

readGzipString

public static java.lang.String readGzipString()
                                       throws java.io.IOException

Takes file input that is compressed and uncompresses it.

Returns:

a uncompressed string from a file

Throws:

java.io.IOException

writeGzipString

public static void writeGzipString(java.lang.String s)
                            throws java.io.IOException

Throws:

java.io.IOException

saveObjectUncompressed

public static void saveObjectUncompressed(java.lang.Object o)
                                   throws java.io.IOException

Throws:

java.io.IOException

print

public static void print(Customer[] c)

This will print all the customers in a list. Customers rule

Parameters:

c - a customer array

testTheTest

public static void testTheTest()

getGzBytes

public static byte[] getGzBytes(java.io.Serializable obj)
                         throws java.io.IOException

This is the inverse of the getGZObject method

Parameters:

obj - must be serializable

Returns:

and array of bytes, compressed using gzip.

Throws:

java.io.IOException - this should never happen

getGzObject

public static java.lang.Object getGzObject(byte[] b)
                                    throws java.io.IOException,
                                           java.lang.ClassNotFoundException

A means of implementing persistance using gzipped byte arrays

Parameters:

b - a byte array of a serializable, gzipped instance

Returns:

an instance that is serializable

Throws:

java.io.IOException - this should not happen

java.lang.ClassNotFoundException - this will happen if the class changes.

getBytes

public static byte[] getBytes(java.io.Serializable obj)
                       throws java.io.IOException

Convert an object that is Serializable into an array of byte

Parameters:

obj - must be serializable

Returns:

array of bytes

Throws:

java.io.IOException - this should never happen

getObject

public static java.lang.Object getObject(byte[] b)
                                  throws java.io.IOException,
                                         java.lang.ClassNotFoundException

The inverse of the getBytes method, this reconstitutes and object

Parameters:

b - the array of bytes containing an instance of a known class.

Returns:

an instance that is serializable

Throws:

java.io.IOException - this should never happen

java.lang.ClassNotFoundException - this will happen if the class is unknown

main

public static void main(java.lang.String[] args)
                 throws java.io.IOException,
                        java.lang.ClassNotFoundException

Throws:

java.io.IOException

java.lang.ClassNotFoundException