ariba.util.core
Class TableUtil

java.lang.Object
  ariba.util.core.TableUtil

public final class TableUtil
extends Object

Table file Utilities. These are helper functions for dealing with table files.

Method Summary

static Map	loadMap(File file) Load a serialized Map from the given file.
static Map	loadMap(File file, boolean displayError) Load a serialized Map from the given url.
static Map	loadMap(String s, boolean displayError) Load a serialized Map from the given String.
static Map	loadMap(URL url) Load a serialized Map from the given url.
static Map	loadMap(URL url, boolean displayError) Load a serialized Map from the given url.
static Object	loadObject(File file) Load an object from a file using loadObject(Reader)
static Object	loadObject(Reader reader) Load an object from a stream.
static Object	loadObject(URL url) Load an object from a URL using loadObject(Reader)
static void	main(String[] args)
static boolean	safeWriteObject(File file, Object object) Writes an object to a file in safe way.
static boolean	writeObject(File file, Object object) Write an object to a file.
static boolean	writeObject(OutputStream outputStream, Object object) Write an object to an OutputStream.
static boolean	writeObject(PrintWriter printWriter, Object object) Write an object to a printWriter.

Methods inherited from class java.lang.Object

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

Method Detail

loadMap

public static Map loadMap(File file)

Load a serialized Map from the given file. The format of the file should be that of calling a Map's toString() method.

Parameters:

file - the File to load the serialized Map from

Returns:

the Map loaded from the file

loadMap

public static Map loadMap(File file,
                          boolean displayError)

Load a serialized Map from the given url. The format of the contents should be that of calling a Map's toString() method.

Parameters:

file - the File to load the serialized Map from

displayError - if true and there are errors deserializing the Map, an error will be printed.

Returns:

the Map loaded from the url, null if the map cannot be loaded.

loadMap

public static Map loadMap(URL url)

Load a serialized Map from the given url. The format of the contents should be that of calling a Map's toString() method.

Parameters:

url - the URL to load the serialized Map from

Returns:

the Map loaded from the url

loadMap

public static Map loadMap(URL url,
                          boolean displayError)

Load a serialized Map from the given url. The format of the contents should be that of calling a Map's toString() method.

Parameters:

url - the URL to load the serialized Map from

displayError - if true and there are errors deserializing the Map, an error will be printed.

Returns:

the Map loaded from the url

loadMap

public static Map loadMap(String s,
                          boolean displayError)

Load a serialized Map from the given String. The format of the contents should be that of calling a Map's toString() method.

Parameters:

s - the String to load the serialized Map from

displayError - if true and there are errors deserializing the Map, an error will be printed.

Returns:

the Map loaded from the url

loadObject

public static Object loadObject(URL url)

Load an object from a URL using loadObject(Reader)

Parameters:

url - the URL to load the object from

Returns:

the deserialized object, or null if there was an IOException.

See Also:

loadObject(Reader)

loadObject

public static Object loadObject(File file)

Load an object from a file using loadObject(Reader)

Parameters:

file - the path for the file to load the object from

Returns:

the deserialized object, or null if there was an IOException.

See Also:

loadObject(Reader)

loadObject

public static Object loadObject(Reader reader)
                         throws IOException

Load an object from a stream. Uses the Deserializer class from ariba.util.io to decode the data.

Parameters:

reader - the source for the Object's data

Returns:

the deserialized Object.

Throws:

IOException - if there was an error deserializing the object.

safeWriteObject

public static boolean safeWriteObject(File file,
                                      Object object)

Writes an object to a file in safe way. This method is similar to writeObject but it actually uses the FileReplacer to be more robust.

Parameters:

file - the path for a file to write the object to

object - the Object to serialize into the file

Returns:

true if the object was written successfully false otherwise

writeObject

public static boolean writeObject(File file,
                                  Object object)

Write an object to a file.

Parameters:

file - the path for a file to write the object to

object - the Object to serialize into the file

Returns:

true if the object was written successfully false otherwise

writeObject

public static boolean writeObject(OutputStream outputStream,
                                  Object object)

Write an object to an OutputStream.

Parameters:

outputStream - the OutputStream to write the object to

object - the Object to serialize into the file

Returns:

true if the object was written successfully false otherwise

writeObject

public static boolean writeObject(PrintWriter printWriter,
                                  Object object)

Write an object to a printWriter.

Parameters:

printWriter - the PrintWriter to write the object to

object - the Object to serialize into the file

Returns:

true if the object was written successfully false otherwise

main

public static void main(String[] args)