com.webobjects.eointerface
Class EOPickTextAssociation

java.lang.Object
  com.webobjects.eocontrol.EODelayedObserver
      com.webobjects.eointerface.EOAssociation
          com.webobjects.eointerface.EOWidgetAssociation
              com.webobjects.eointerface.EOValueAssociation
                  com.webobjects.eointerface.EOPickTextAssociation

All Implemented Interfaces:

EOObserving, NSDisposable

public class EOPickTextAssociation

extends EOValueAssociation

An EOPickTextAssociation takes the value of its display object's plugin, a EOValueAssociation.ValuePlugin or subclass, and uses it's string value to form a qualifier with up to three LIKE operators, each compared to a different key of the EODisplayGroup. (Keys are specified in MatchKey1Aspect, MatchKey2Aspect, MatchKey3Aspect). It thereby acts as a filter on the display group. This allows the user to perform a similarity search based on whole or partial values.

Aspects:

EOAssociation.MatchKey1Aspect,

EOAssociation.MatchKey2Aspect,

EOAssociation.MatchKey3Aspect

Example

Make an EOPickTextAssociation between an NSTextField and an EODisplayGroup of People objects. Bind the matchKey1 and matchKey2 aspects to the "lastName" and "firstName" keys. If the user types "Bi" in the field, the EOPickTextAssociation applies the following qualifier to the EODisplayGroup:

(lastName like "*Bi*") OR (firstName like "*Bi*")

which matches names like "Bill Smith" and "Joe Biggs". The list of objects displayed in the display group is restricted to those that match the qualifier.

See Also:

EOAssociation

Nested Class Summary

Nested classes inherited from class com.webobjects.eointerface.EOValueAssociation

EOValueAssociation.ValuePlugin

Nested classes inherited from class com.webobjects.eointerface.EOWidgetAssociation

EOWidgetAssociation.WidgetPlugin

Field Summary

Fields inherited from class com.webobjects.eointerface.EOAssociation

ActionAspect, ArgumentAspect, AttributeAspectSignature, AttributeToManyAspectSignature, AttributeToOneAspectSignature, AttributeToOneToManyAspectSignature, BackgroundColorAspect, BoldAspect, ChildrenAspect, DestinationAspect, EnabledAspect, ExpandedIconAspect, IconAspect, IgnoreValue, IsLeafAspect, ItalicAspect, MatchKey1Aspect, MatchKey2Aspect, MatchKey3Aspect, NullAspectSignature, ParentAspect, RootAspect, SelectedIndexAspect, SelectedObjectAspect, SelectedTitleAspect, SetValue, SourceAspect, TextColorAspect, TitlesAspect, ToManyAspectSignature, ToOneAspectSignature, ToOneToManyAspectSignature, UnsetValue, URLAspect, ValueAspect

Fields inherited from class com.webobjects.eocontrol.EODelayedObserver

ObserverNumberOfPriorities, ObserverPriorityFifth, ObserverPriorityFirst, ObserverPriorityFourth, ObserverPriorityImmediate, ObserverPriorityLater, ObserverPrioritySecond, ObserverPrioritySixth, ObserverPriorityThird

Constructor Summary

EOPickTextAssociation(Object object)
Creates a new EOPickTextAssociation to monitor and update the row values of a display group according to the text widget 'object', which supplies a text (String) value.

Method Summary

protected String	displayValueAspect() This method returns null since the corresponding text widget is not used to display values, but to filter rows in a display group.
String	primaryAspect() This method returns this association's primary aspect, which is EOAssociation.MatchKey1Aspect.

Methods inherited from class com.webobjects.eointerface.EOValueAssociation

bindAspect, displayValueFromURL, endEditing, subjectChanged, widgetDidBeginEditing, widgetDidChange, widgetDidEndEditing, widgetPluginClass

Methods inherited from class com.webobjects.eointerface.EOWidgetAssociation

canSupportValueFormatter, defaultPrefersContinuousChangeNotification, dispose, isUsableWithObject, objectKeysTaken, prefersContinuousChangeNotification, setDefaultPrefersContinuousChangeNotification, setObject, setPrefersContinuousChangeNotification, setValueFormatter, valueFormatter, widgetPlugin

Methods inherited from class com.webobjects.eointerface.EOAssociation

aspects, aspectSignatures, associationClassesForObject, breakConnection, copyMatchingBindingsFromAssociation, displayGroupForAspect, displayGroupKeyForAspect, establishConnection, isConnected, isEnabled, isEnabledAtIndex, isExplicitlyDisabled, object, priority, registerAssociationClass, setExplicitlyDisabled, setValueForAspect, setValueForAspectAtIndex, shouldEndEditing, shouldEndEditingAtIndex, valueForAspect, valueForAspectAtIndex

Methods inherited from class com.webobjects.eocontrol.EODelayedObserver

discardPendingNotification, objectWillChange, observerQueue

Methods inherited from class java.lang.Object

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

Constructor Detail

EOPickTextAssociation

public EOPickTextAssociation(Object object)

Creates a new EOPickTextAssociation to monitor and update the row values of a display group according to the text widget 'object', which supplies a text (String) value. You normally set up associations with Interface Builder, in which case you don't need to create them programmatically. However, if you do create them up programmatically, setting them up is a multi-step process. After creating an association, you must bind its aspects and establish its connections.

Parameters:

object - the text widget which supplies the string value used as a filter on the display group

Method Detail

displayValueAspect

protected String displayValueAspect()

This method returns null since the corresponding text widget is not used to display values, but to filter rows in a display group.

Overrides:

displayValueAspect in class EOValueAssociation

Returns:

always null

primaryAspect

public String primaryAspect()

This method returns this association's primary aspect, which is EOAssociation.MatchKey1Aspect.

Overrides:

primaryAspect in class EOValueAssociation

Returns:

the name of the primary aspect (EOAssociation.MatchKey1Aspect)