com.webobjects.woextensions
Class WOKeyValueConditional

java.lang.Object
  com.webobjects.appserver.WOElement
      com.webobjects.appserver.WOComponent
          com.webobjects.woextensions.WOKeyValueConditional

All Implemented Interfaces:

Cloneable, NSKeyValueCoding, NSKeyValueCoding.ErrorHandling, NSKeyValueCodingAdditions, NSValidation, Serializable, WOActionResults

public class WOKeyValueConditional

extends WOComponent

See Also:

Serialized Form

Nested Class Summary

Nested classes inherited from class com.webobjects.appserver.WOComponent

WOComponent.Event

Nested classes inherited from class com.webobjects.foundation.NSKeyValueCoding

NSKeyValueCoding.DefaultImplementation, NSKeyValueCoding.ErrorHandling, NSKeyValueCoding.Null, NSKeyValueCoding.UnknownKeyException, NSKeyValueCoding.Utility, NSKeyValueCoding.ValueAccessor

Nested classes inherited from class com.webobjects.foundation.NSKeyValueCodingAdditions

NSKeyValueCodingAdditions.DefaultImplementation, NSKeyValueCodingAdditions.Utility

Nested classes inherited from class com.webobjects.foundation.NSValidation

NSValidation.DefaultImplementation, NSValidation.Utility, NSValidation.ValidationException

Field Summary

Fields inherited from interface com.webobjects.foundation.NSKeyValueCoding

NullValue

Fields inherited from interface com.webobjects.foundation.NSKeyValueCodingAdditions

KeyPathSeparator

Constructor Summary

WOKeyValueConditional(WOContext aContext)

Method Summary

boolean	condition()
boolean	isStateless() By default, this method returns false, indicating that state will be maintained for instances of the receiver.
String	key()
boolean	negate()
void	reset() Allows a stateless component to reset temporary references.

Methods inherited from class com.webobjects.appserver.WOComponent

appendToResponse, application, awake, baseURL, bindingKeys, canAccessFieldsDirectly, canGetValueForBinding, canSetValueForBinding, clone, context, debugString, descriptionForResponse, ensureAwakeInContext, frameworkName, generateResponse, handleQueryWithUnboundKey, handleTakeValueForUnboundKey, hasBinding, hasSession, invokeAction, isCachingEnabled, isEventLoggingEnabled, logString, name, pageWithName, parent, path, pathURL, performParentAction, pullValuesFromParent, pushValuesToParent, session, set_componentUnroll, set_unroll, setCachingEnabled, setValueForBinding, sleep, synchronizesVariablesWithBindings, takeValueForKey, takeValueForKeyPath, takeValuesFromRequest, template, templateWithHTMLString, templateWithName, toString, unableToSetNullForKey, validateTakeValueForKeyPath, validateValueForKey, validationFailedWithException, valueForBinding, valueForKey, valueForKeyPath

Methods inherited from class java.lang.Object

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

Constructor Detail

WOKeyValueConditional

public WOKeyValueConditional(WOContext aContext)

Method Detail

condition

public boolean condition()

isStateless

public boolean isStateless()

Description copied from class: WOComponent

By default, this method returns false, indicating that state will be maintained for instances of the receiver. Overriding this method to return true will make the component stateless. A single instance of each stateless component is shared between multiple sessions, reducing the application's memory footprint.

By default, stateless components don't synchronize. So, if you override this method to return true and you want the component to synchronize, you must also override synchronizesVariablesWithBindings and return true.

Overrides:

isStateless in class WOComponent

Returns:

true if this method is overidden, false otherwise

See Also:

WOComponent.reset(), WOComponent.synchronizesVariablesWithBindings()

key

public String key()

negate

public boolean negate()

reset

public void reset()

Description copied from class: WOComponent

Allows a stateless component to reset temporary references. This method -- which is only invoked if the component is stateless -- allows a component instance to reset or delete temporary references to objects that are specific to a given context. To ensure that when the shared instance of a component is reused by another session there are no side effects, implement this method so that it releases and sets to null each of the component's instance variables.

Overrides:

reset in class WOComponent

See Also:

WOComponent.isStateless()