org.dice_research.topicmodeling.commons.io

Class StorageHelper

java.lang.Object

org.dice_research.topicmodeling.commons.io.StorageHelper

public class StorageHelper
extends Object

Constructor Summary

Constructors

Constructor and Description
StorageHelper()

Method Summary

Modifier and Type	Method and Description
static <T extends Serializable> T	readFromFile(String filename) Reads and deserializes the object from the file with the given name.
static <T extends Serializable> T	readFromFileSavely(String filename) Reads and deserializes the object from the file with the given name.
static <T extends Serializable> T	readFromStream(InputStream stream) Reads and deserializes the object from the given stream.
static <T extends Serializable> T	readFromStreamSavely(InputStream stream) Reads and deserializes the object from the given stream.
static <T extends Serializable> void	storeToFile(T object, String filename) Serializes and stores the given object in the file with the given filename.
static <T extends Serializable> boolean	storeToFileSavely(T object, String filename) Serializes and stores the given object in the file with the given filename.
static <T extends Serializable> void	storeToStream(T object, OutputStream out) Serializes and stores the given object in the given stream.
static <T extends Serializable> boolean	storeToStreamSavely(T object, OutputStream out) Serializes and stores the given object in the given stream.

Methods inherited from class java.lang.Object

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

Constructor Detail

StorageHelper

public StorageHelper()

Method Detail

readFromFile

public static <T extends Serializable> T readFromFile(String filename)
                                               throws IOException,
                                                      ClassNotFoundException

Reads and deserializes the object from the file with the given name. Note that only the first object will be read from file.

Parameters:

filename -

Returns:

The read object.

Throws:

IOException - if an IO error occurs

ClassNotFoundException - if the class inside the file can't be found

readFromStream

public static <T extends Serializable> T readFromStream(InputStream stream)
                                                 throws IOException,
                                                        ClassNotFoundException

Reads and deserializes the object from the given stream. Note that only the first object will be read from file.

Parameters:

stream -

Returns:

The read object.

Throws:

IOException - if an IO error occurs

ClassNotFoundException - if the class inside the file can't be found

readFromFileSavely

public static <T extends Serializable> T readFromFileSavely(String filename)

Reads and deserializes the object from the file with the given name. Note that only the first object will be read from file.

Parameters:

filename -

Returns:

The read object or null if an error occurred.

readFromStreamSavely

public static <T extends Serializable> T readFromStreamSavely(InputStream stream)

Reads and deserializes the object from the given stream. Note that only the first object will be read from file.

Parameters:

stream -

Returns:

The read object.

Throws:

IOException - if an IO error occurs

ClassNotFoundException - if the class inside the file can't be found

storeToFile

public static <T extends Serializable> void storeToFile(T object,
                                                        String filename)
                                                 throws IOException

Serializes and stores the given object in the file with the given filename.

Parameters:

object -

filename -

Throws:

IOException - if an IO error occurs

storeToStream

public static <T extends Serializable> void storeToStream(T object,
                                                          OutputStream out)
                                                   throws IOException

Serializes and stores the given object in the given stream.

Parameters:

object -

out -

Throws:

IOException - if an IO error occurs

storeToFileSavely

public static <T extends Serializable> boolean storeToFileSavely(T object,
                                                                 String filename)

Serializes and stores the given object in the file with the given filename.

Parameters:

object -

filename -

Returns:

false if an error occurred, else true

storeToStreamSavely

public static <T extends Serializable> boolean storeToStreamSavely(T object,
                                                                   OutputStream out)

Serializes and stores the given object in the given stream.

Parameters:

object -

out -

Returns:

false if an error occurred, else true