uk.org.ogsadai.activity.xmldb.commands
Class PropertiesCommandFactory

java.lang.Object
  |
  +--uk.org.ogsadai.activity.xmldb.commands.PropertiesCommandFactory

All Implemented Interfaces:

CommandFactory

public class PropertiesCommandFactory

extends java.lang.Object

implements CommandFactory

A CommandFactory that creates Command instances based on a properties file where the keys are command element names and the values command implementation class names.

Author:

The OGSA-DAI Project Team

Field Summary

private static java.lang.String	COPYRIGHT_NOTICE Copyright statement
private java.util.Properties	mCommands Maps command element names to their implementation class.

Constructor Summary

PropertiesCommandFactory(java.util.Properties properties)
Constructs the CommandFactory using the specified properties.

Method Summary

Command

createCommand(org.w3c.dom.Element element) Creates and instantiates the Command that corresponds to the specified element.

Methods inherited from class java.lang.Object

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

Field Detail

COPYRIGHT_NOTICE

private static final java.lang.String COPYRIGHT_NOTICE

Copyright statement

See Also:

Constant Field Values

mCommands

private java.util.Properties mCommands

Maps command element names to their implementation class.

Constructor Detail

PropertiesCommandFactory

public PropertiesCommandFactory(java.util.Properties properties)

Constructs the CommandFactory using the specified properties.

Parameters:

properties - A Properties object where each key represents a command element name and its corresponding value the class name for the command implementation.

Method Detail

createCommand

public Command createCommand(org.w3c.dom.Element element)
                      throws XMLDBCommandCreationException,
                             XMLDBUnsupportedCommandException,
                             XMLDBCommandSpecificationException,
                             XMLDBCommandExecutionException

Description copied from interface: CommandFactory

Creates and instantiates the Command that corresponds to the specified element.

Specified by:

createCommand in interface CommandFactory

Parameters:

element - The element to map to a corresponding Command implementation.

Returns:

the newly created Command

Throws:

XMLDBCommandExecutionException - If there is an internal problem

XMLDBCommandSpecificationException - If there is a problem parsing element or initialising the command due to incorrect values in the command provided by a client.

XMLDBCommandCreationException - If there is a problem when creating the Command.

XMLDBUnsupportedCommandException - If the Command is not known to the factory.