Package org.apache.struts.config

Class ExceptionConfig

java.lang.Object

org.apache.struts.config.BaseConfig

org.apache.struts.config.ExceptionConfig

All Implemented Interfaces:

Serializable

public class ExceptionConfig
extends BaseConfig

A JavaBean representing the configuration information of an <exception> element from a Struts configuration file.

Since:

Struts 1.1

Version:

$Rev$ $Date: 2005-08-06 18:03:30 -0400 (Sat, 06 Aug 2005) $

See Also:

• Serialized Form

Field Summary

Fields

Modifier and Type	Field	Description
protected String	bundle	The servlet context attribute under which the message resources bundle to be used for this exception is located.
protected boolean	extensionProcessed	Have the inheritance values for this class been applied?
protected String	handler	The fully qualified Java class name of the exception handler class which should be instantiated to handle this exception.
protected String	inherit	The type of the ExceptionConfig that this object should inherit properties from.
protected String	key	The message resources key specifying the error message associated with this exception.
protected String	path	The module-relative path of the resource to forward to if this exception occurs during an Action.
protected String	scope	The scope in which we should expose the ActionMessage for this exception handler.
protected String	type	The fully qualified Java class name of the exception that is to be handled by this handler.

Fields inherited from class org.apache.struts.config.BaseConfig

configured

Constructor Summary

Constructors

Constructor	Description
ExceptionConfig()

Method Summary

Modifier and Type	Method	Description
protected boolean	checkCircularInheritance(ModuleConfig moduleConfig, ActionConfig actionConfig)	Traces the hierarchy of this object to check if any of the ancestors are extending this instance.
String	getBundle()
String	getExtends()
String	getHandler()
String	getKey()
String	getPath()
String	getScope()
String	getType()
void	inheritFrom(ExceptionConfig config)	Inherit values that have not been overridden from the provided config object.
boolean	isExtensionProcessed()
void	processExtends(ModuleConfig moduleConfig, ActionConfig actionConfig)	Inherit configuration information from the ExceptionConfig that this instance is extending.
void	setBundle(String bundle)
void	setExtends(String inherit)
void	setHandler(String handler)
void	setKey(String key)
void	setPath(String path)
void	setScope(String scope)
void	setType(String type)
String	toString()	Return a String representation of this object.

Methods inherited from class org.apache.struts.config.BaseConfig

copyProperties, freeze, getProperties, getProperty, inheritProperties, setProperties, setProperty, throwIfConfigured

Methods inherited from class java.lang.Object

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

Field Details

bundle

protected String bundle

The servlet context attribute under which the message resources bundle to be used for this exception is located. If not set, the default message resources for the current module is assumed.

inherit

protected String inherit

The type of the ExceptionConfig that this object should inherit properties from.

extensionProcessed

protected boolean extensionProcessed

Have the inheritance values for this class been applied?

handler

protected String handler

The fully qualified Java class name of the exception handler class which should be instantiated to handle this exception.

key

protected String key

The message resources key specifying the error message associated with this exception.

path

protected String path

The module-relative path of the resource to forward to if this exception occurs during an Action.

scope

protected String scope

The scope in which we should expose the ActionMessage for this exception handler.

type

protected String type

The fully qualified Java class name of the exception that is to be handled by this handler.

Constructor Details

ExceptionConfig

public ExceptionConfig()

Method Details

getBundle

public String getBundle()

setBundle

public void setBundle(String bundle)

getExtends

public String getExtends()

setExtends

public void setExtends(String inherit)

isExtensionProcessed

public boolean isExtensionProcessed()

getHandler

public String getHandler()

setHandler

public void setHandler(String handler)

getKey

public String getKey()

setKey

public void setKey(String key)

getPath

public String getPath()

setPath

public void setPath(String path)

getScope

public String getScope()

setScope

public void setScope(String scope)

getType

public String getType()

setType

public void setType(String type)

checkCircularInheritance

protected boolean checkCircularInheritance(ModuleConfig moduleConfig,
 ActionConfig actionConfig)

Traces the hierarchy of this object to check if any of the ancestors are extending this instance.

Parameters:

moduleConfig - The ModuleConfig that this config is from.

actionConfig - The ActionConfig that this config is from, if applicable. This parameter must be null if this is a global handler.

Returns:

true if circular inheritance was detected.

inheritFrom

public void inheritFrom(ExceptionConfig config)
                 throws ClassNotFoundException,
IllegalAccessException,
InstantiationException,
InvocationTargetException

Inherit values that have not been overridden from the provided config object. Subclasses overriding this method should verify that the given parameter is of a class that contains a property it is trying to inherit:

 if (config instanceof MyCustomConfig) {
     MyCustomConfig myConfig =
         (MyCustomConfig) config;

     if (getMyCustomProp() == null) {
         setMyCustomProp(myConfig.getMyCustomProp());
     }
 }
 

If the given config is extending another object, those extensions should be resolved before it's used as a parameter to this method.

Parameters:

config - The object that this instance will be inheriting its values from.

Throws:

ClassNotFoundException

IllegalAccessException

InstantiationException

InvocationTargetException

See Also:

• processExtends(ModuleConfig, ActionConfig)

processExtends

public void processExtends(ModuleConfig moduleConfig,
 ActionConfig actionConfig)
                    throws ClassNotFoundException,
IllegalAccessException,
InstantiationException,
InvocationTargetException

Inherit configuration information from the ExceptionConfig that this instance is extending. This method verifies that any exception config object that it inherits from has also had its processExtends() method called.

Parameters:

moduleConfig - The ModuleConfig that this config is from.

actionConfig - The ActionConfig that this config is from, if applicable. This must be null for global forwards.

Throws:

ClassNotFoundException

IllegalAccessException

InstantiationException

InvocationTargetException

See Also:

• inheritFrom(ExceptionConfig)

toString

public String toString()

Return a String representation of this object.

Overrides:

toString in class Object