com.webobjects.directtoweb
Class D2WQueryToOneField

java.lang.Object
  com.webobjects.appserver.WOElement
      com.webobjects.appserver.WOComponent
          com.webobjects.directtoweb.D2WComponent
              com.webobjects.directtoweb.D2WStatelessComponent
                  com.webobjects.directtoweb.QueryComponent
                      com.webobjects.directtoweb.D2WQueryToOneField

All Implemented Interfaces:

Cloneable, com.webobjects.directtoweb.generation.DTWGeneration, NSKeyValueCoding, NSKeyValueCoding.ErrorHandling, NSKeyValueCodingAdditions, NSValidation, Serializable, WOActionResults

public class D2WQueryToOneField

extends QueryComponent

The D2WQueryToOneField class is a property-level component that builds a query based on the value for a particular key of a destination object of a to-one relationship. It does not traverse the relationship.

Property-level components are not accessed programmatically. Instead, you use the Web Assistant or Rule Editor to choose the property-level component that Direct to Web uses to display a property on a particular entity and task page.

If you want to create a property-level component to query based on a property, use D2WCustomQueryComponent.

See Also:

D2WQueryToOneRelationship, D2WCustomQueryComponent, 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 class com.webobjects.directtoweb.D2WComponent

currentObjectKey

Fields inherited from interface com.webobjects.foundation.NSKeyValueCoding

NullValue

Fields inherited from interface com.webobjects.foundation.NSKeyValueCodingAdditions

KeyPathSeparator

Constructor Summary

D2WQueryToOneField(WOContext aContext)
Creates an instance of D2WQueryToOneField with the specified context.

Method Summary

WOAssociation	replacementAssociationForAssociation(WOAssociation oldAssociation, String oldBinding, com.webobjects.directtoweb.generation.DTWTemplate aTemplate, WOContext aContext) Replaces the binding value.
void	reset() Clears the local value.
void	setValue(Object newValue) Sets the value to the specified new value.
Object	value() Gets the value.

Methods inherited from class com.webobjects.directtoweb.QueryComponent

displayGroup

Methods inherited from class com.webobjects.directtoweb.D2WStatelessComponent

d2wContext, isStateless, localContext, object

Methods inherited from class com.webobjects.directtoweb.D2WComponent

allEntities, allowCollapsing, applicationPort, assistantPort, attribute, backgroundColorForHeaderRow, backgroundColorForPage, backgroundColorForTable, backgroundColorForTableDark, backgroundColorForTableLight, color, currentSettings, currentUrl, d2wContextVisibleEntityNamesCountPlus1, defaultRowspan, displayNameForKeyWhenRelationship, displayNameForProperty, displayPropertyKeys, dynamicPages, entity, entityName, formatter, generationReplacementFor, generationReplacementForCurrentObject, hasCustomKey, hasEntity, hasNoColor, homeClicked, homeHref, isEditing, isEntityReadOnly, isEntityReadOnly, isLiveAssistantEnabled, isNotBoldAsBoolean, isNotItalicAsBoolean, isPropertyAnAttribute, isWebAssistantActive, isWebAssistantConnected, isWebAssistantEnabled, keyForGenerationReplacementForVariableNamed, keyWhenRelationship, lastUrl, length, logout, objectPropertyValue, objectPropertyValueIsNonNull, pageTitle, property, propertyKey, propertyValueClassName, relationship, resourcePathURL, sessionID, setCurrentSettings, setDynamicPages, setEntities, setEntity, setEntityName, setLocalContext, setObject, setPropertyKey, setResourcePathURL, setTask, setTasks, showBanner, showWebAssistant, submitActionName, target, task, tasks, visibleEntityNames

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

D2WQueryToOneField

public D2WQueryToOneField(WOContext aContext)

Creates an instance of D2WQueryToOneField with the specified context.

Parameters:

aContext - instance of WOContext

See Also:

QueryComponent.QueryComponent(WOContext)

Method Detail

replacementAssociationForAssociation

public WOAssociation replacementAssociationForAssociation(WOAssociation oldAssociation,
                                                          String oldBinding,
                                                          com.webobjects.directtoweb.generation.DTWTemplate aTemplate,
                                                          WOContext aContext)

Replaces the binding value.

The implementation is subject to change in future releases.

Specified by:

replacementAssociationForAssociation in interface com.webobjects.directtoweb.generation.DTWGeneration

Overrides:

replacementAssociationForAssociation in class QueryComponent

Parameters:

oldAssociation - instance of WOAssociation

oldBinding - instance of String

aTemplate - instance of DTWTemplate

aContext - instance of WOContext

Returns:

instance of WOAssociation

See Also:

value(), QueryComponent.replacementAssociationForAssociation(WOAssociation, String, DTWTemplate, WOContext)

reset

public void reset()

Clears the local value.

Is needed because the current implementation uses lazy initialization to get the value in the value method.

The implementation is subject to change in future releases.

Overrides:

reset in class QueryComponent

See Also:

value(), QueryComponent.reset()

setValue

public void setValue(Object newValue)

Sets the value to the specified new value.

Overrides:

setValue in class QueryComponent

Parameters:

newValue - the new value

See Also:

value()

value

public Object value()

Gets the value.

Provides the value for a WOTextField. The current implementation invokes the valueForKey method on the query match of the display group.

The implementation is subject to change in future releases.

Overrides:

value in class QueryComponent

Returns:

the value

See Also:

setValue(Object)