net.sourceforge.jtds.jdbc

Class Messages

java.lang.Object

net.sourceforge.jtds.jdbc.Messages

public final class Messages
extends java.lang.Object

Support class for Messages.properties.

Version:

$Id: Messages.java,v 1.8 2005-04-20 16:49:22 alin_sinpalean Exp $

Author:

David D. Kilzer, Mike Hutchinson

Field Summary

Fields

Modifier and Type	Field and Description
private static java.lang.String	DEFAULT_RESOURCE Default name for resource bundle containing the messages.
private static java.util.ResourceBundle	defaultResource Cached resource bundle containing the messages.

Constructor Summary

Constructors

Modifier	Constructor and Description
private	Messages() Default constructor.

Method Summary

Methods

Modifier and Type	Method and Description
static java.lang.String	get(java.lang.String key) Get runtime message using supplied key.
static java.lang.String	get(java.lang.String key, java.lang.Object param1) Get runtime message using supplied key and substitute parameter into message.
private static java.lang.String	get(java.lang.String key, java.lang.Object[] arguments) Get runtime error using supplied key and substitute parameters into message.
(package private) static java.lang.String	get(java.lang.String key, java.lang.Object param1, java.lang.Object param2) Get runtime message using supplied key and substitute parameters into message.
(package private) static void	loadDriverProperties(java.util.Map propertyMap, java.util.Map descriptionMap) Retrieve the list of driver property names and driver property descriptions from Messages.properties and populate them into Map objects.
private static java.util.ResourceBundle	loadResourceBundle() Load the DEFAULT_RESOURCE resource bundle.

Methods inherited from class java.lang.Object

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

Field Detail

DEFAULT_RESOURCE

private static final java.lang.String DEFAULT_RESOURCE

Default name for resource bundle containing the messages.

See Also:

Constant Field Values

defaultResource

private static java.util.ResourceBundle defaultResource

Cached resource bundle containing the messages.

ResourceBundle does caching internally but this caching involves a lot of string operations to generate the keys used for caching, leading to a lot of StringBuffer reallocation. In one run through the complete jTDS test suite there were over 60000 allocations and reallocations (about one for each get() call).

Constructor Detail

Messages

private Messages()

Default constructor. Private to prevent instantiation.

Method Detail

get

public static java.lang.String get(java.lang.String key)

Get runtime message using supplied key.

Parameters:

key - The key of the message in Messages.properties

Returns:

The selected message as a String.

get

public static java.lang.String get(java.lang.String key,
                   java.lang.Object param1)

Get runtime message using supplied key and substitute parameter into message.

Parameters:

key - The key of the message in Messages.properties

param1 - The object to insert into message.

Returns:

The selected message as a String.

get

static java.lang.String get(java.lang.String key,
                   java.lang.Object param1,
                   java.lang.Object param2)

Get runtime message using supplied key and substitute parameters into message.

Parameters:

key - The key of the message in Messages.properties

param1 - The object to insert into message.

param2 - The object to insert into message.

Returns:

The selected message as a String.

get

private static java.lang.String get(java.lang.String key,
                   java.lang.Object[] arguments)

Get runtime error using supplied key and substitute parameters into message.

Parameters:

key - The key of the error message in Messages.properties

arguments - The objects to insert into the message.

Returns:

The selected error message as a String.

loadDriverProperties

static void loadDriverProperties(java.util.Map propertyMap,
                        java.util.Map descriptionMap)

Retrieve the list of driver property names and driver property descriptions from Messages.properties and populate them into Map objects.

The keys used to populate both propertyMap and descriptionMap are guaranteed to match up as long as the properties defined in Messages.properties are well-formed.

Parameters:

propertyMap - The map of property names to be populated.

descriptionMap - The map of property descriptions to be populated.

loadResourceBundle

private static java.util.ResourceBundle loadResourceBundle()

Load the DEFAULT_RESOURCE resource bundle.

Returns:

The resource bundle.