org.nakedobjects.utility
Class ComponentLoader

java.lang.Object
  org.nakedobjects.utility.ComponentLoader

public class ComponentLoader

extends java.lang.Object

Constructor Summary

ComponentLoader()

Method Summary

static java.lang.Object	loadComponent(java.lang.String paramName, java.lang.Class requiredClass) Loads a component required by the system, as specfied in the configuration file.
static java.lang.Object	loadComponent(java.lang.String paramName, java.lang.String defaultType, java.lang.Class requiredClass) Loads a component required by the system, as specfied in the configuration file.
static java.lang.Object	loadComponentIfRequired(java.lang.String paramName, java.lang.Class requiredClass)
static java.lang.Object	loadComponentIfRequired(java.lang.String paramName, java.lang.String defaultType, java.lang.Class requiredClass)

Methods inherited from class java.lang.Object

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

Constructor Detail

ComponentLoader

public ComponentLoader()

Method Detail

loadComponent

public static java.lang.Object loadComponent(java.lang.String paramName,
                                             java.lang.Class requiredClass)
                                      throws ConfigurationException

Loads a component required by the system, as specfied in the configuration file. If there is no class specified in the configuration file then the default class is used.

Parameters:

paramName - the parameter name to match with the configuration file

requiredClass - the type of component that must be specified

Returns:

Object the loaded component

Throws:

ConfigurationException - thrown if there is no component specified, the class cannot be found, the class is of the wrong type, or there is a problem loading or accessing it.

loadComponentIfRequired

public static java.lang.Object loadComponentIfRequired(java.lang.String paramName,
                                                       java.lang.Class requiredClass)
                                                throws ConfigurationException

Throws:

ConfigurationException

loadComponent

public static java.lang.Object loadComponent(java.lang.String paramName,
                                             java.lang.String defaultType,
                                             java.lang.Class requiredClass)
                                      throws ConfigurationException

Loads a component required by the system, as specfied in the configuration file. If there is no class specified in the configuration file then the default class is used.

Parameters:

paramName - the parameter name to match with the configuration file

defaultType - the name of the class to use for the default component

requiredClass - the type of component that must be specified

Returns:

Object the loaded component

Throws:

ConfigurationException - thrown if there is no component specified, the class cannot be found, the class is of the wrong type, or there is a problem loading or accessing it.

loadComponentIfRequired

public static java.lang.Object loadComponentIfRequired(java.lang.String paramName,
                                                       java.lang.String defaultType,
                                                       java.lang.Class requiredClass)
                                                throws ConfigurationException

Throws:

ConfigurationException