org.apache.wicket.settings

Class ExceptionSettings

java.lang.Object

org.apache.wicket.settings.ExceptionSettings

public class ExceptionSettings
extends Object

Settings interface for configuring exception handling related settings.

unexpectedExceptionDisplay (defaults to SHOW_EXCEPTION_PAGE) - Determines how exceptions are displayed to the developer or user

throwExceptionOnMissingResource (defaults to true) - Set to true to throw a runtime exception if a required string resource is not found. Set to false to return the requested resource key surrounded by pairs of question mark characters (e.g. "??missingKey??")

Author:

Jonathan Locke, Chris Turner, Eelco Hillenius, Juergen Donnerstag, Johan Compagner, Igor Vaynberg (ivaynberg), Martijn Dashorst, James Carman

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	ExceptionSettings.AjaxErrorStrategy How to handle errors while processing an Ajax request
static class	ExceptionSettings.ThreadDumpStrategy Which threads' stacktrace to dump when a page lock timeout occurs
static class	ExceptionSettings.UnexpectedExceptionDisplay Enumerated type for different ways of displaying unexpected exceptions.

Field Summary

Fields

Modifier and Type	Field and Description
static ExceptionSettings.UnexpectedExceptionDisplay	SHOW_EXCEPTION_PAGE Indicates that an exception page appropriate to development should be shown when an unexpected exception is thrown.
static ExceptionSettings.UnexpectedExceptionDisplay	SHOW_INTERNAL_ERROR_PAGE Indicates a generic internal error page should be shown when an unexpected exception is thrown.
static ExceptionSettings.UnexpectedExceptionDisplay	SHOW_NO_EXCEPTION_PAGE Indicates that no exception page should be shown when an unexpected exception is thrown.

Constructor Summary

Constructors

Constructor and Description
ExceptionSettings()

Method Summary

Methods

Modifier and Type	Method and Description
ExceptionSettings.AjaxErrorStrategy	getAjaxErrorHandlingStrategy()
ExceptionSettings.ThreadDumpStrategy	getThreadDumpStrategy()
ExceptionSettings.UnexpectedExceptionDisplay	getUnexpectedExceptionDisplay()
ExceptionSettings	setAjaxErrorHandlingStrategy(ExceptionSettings.AjaxErrorStrategy errorHandlingStrategyDuringAjaxRequests) Sets strategy used to handle errors during Ajax request processing
ExceptionSettings	setThreadDumpStrategy(ExceptionSettings.ThreadDumpStrategy strategy) Sets the strategy to use for dumping stack traces of live threads in the JVM.
ExceptionSettings	setUnexpectedExceptionDisplay(ExceptionSettings.UnexpectedExceptionDisplay unexpectedExceptionDisplay) The exception display type determines how the framework displays exceptions to you as a developer or user.

Methods inherited from class java.lang.Object

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

Field Detail

SHOW_EXCEPTION_PAGE

public static final ExceptionSettings.UnexpectedExceptionDisplay SHOW_EXCEPTION_PAGE

Indicates that an exception page appropriate to development should be shown when an unexpected exception is thrown.

SHOW_INTERNAL_ERROR_PAGE

public static final ExceptionSettings.UnexpectedExceptionDisplay SHOW_INTERNAL_ERROR_PAGE

Indicates a generic internal error page should be shown when an unexpected exception is thrown.

SHOW_NO_EXCEPTION_PAGE

public static final ExceptionSettings.UnexpectedExceptionDisplay SHOW_NO_EXCEPTION_PAGE

Indicates that no exception page should be shown when an unexpected exception is thrown.

Constructor Detail

ExceptionSettings

public ExceptionSettings()

Method Detail

getUnexpectedExceptionDisplay

public ExceptionSettings.UnexpectedExceptionDisplay getUnexpectedExceptionDisplay()

Returns:

Returns the unexpectedExceptionDisplay.

setUnexpectedExceptionDisplay

public ExceptionSettings setUnexpectedExceptionDisplay(ExceptionSettings.UnexpectedExceptionDisplay unexpectedExceptionDisplay)

The exception display type determines how the framework displays exceptions to you as a developer or user.

The default value for exception display type is SHOW_EXCEPTION_PAGE. When this value is set and an unhandled runtime exception is thrown by a page, a redirect to a helpful exception display page will occur.

This is a developer feature, however, and you may want to instead show an internal error page without developer details that allows a user to start over at the application's home page. This can be accomplished by setting the exception display type to SHOW_INTERNAL_ERROR_PAGE.

Finally, if you are having trouble with the exception display pages themselves, you can disable exception displaying entirely with the value SHOW_NO_EXCEPTION_PAGE. This will cause the framework to re-throw any unhandled runtime exceptions after wrapping them in a ServletException wrapper.

Parameters:

unexpectedExceptionDisplay - The unexpectedExceptionDisplay to set.

Returns:

this object for chaining

getAjaxErrorHandlingStrategy

public ExceptionSettings.AjaxErrorStrategy getAjaxErrorHandlingStrategy()

Returns:

strategy used to handle errors during Ajax request processing

setAjaxErrorHandlingStrategy

public ExceptionSettings setAjaxErrorHandlingStrategy(ExceptionSettings.AjaxErrorStrategy errorHandlingStrategyDuringAjaxRequests)

Sets strategy used to handle errors during Ajax request processing

Parameters:

errorHandlingStrategyDuringAjaxRequests -

Returns:

this object for chaining

setThreadDumpStrategy

public ExceptionSettings setThreadDumpStrategy(ExceptionSettings.ThreadDumpStrategy strategy)

Sets the strategy to use for dumping stack traces of live threads in the JVM.

Parameters:

strategy -

Returns:

this object for chaining

getThreadDumpStrategy

public ExceptionSettings.ThreadDumpStrategy getThreadDumpStrategy()

Returns:

strategy to use for dumping stack traces of live threads in the JVM.