WebObjects 5.2

com.webobjects.directtoweb
Class D2WQueryPage

java.lang.Object
  |
  +--com.webobjects.appserver.WOElement
        |
        +--com.webobjects.appserver.WOComponent
              |
              +--com.webobjects.directtoweb.D2WComponent
                    |
                    +--com.webobjects.directtoweb.D2WPage
                          |
                          +--com.webobjects.directtoweb.D2WQueryPage
All Implemented Interfaces:
Cloneable, com.webobjects.directtoweb.generation.DTWGeneration, NSKeyValueCoding, NSKeyValueCoding.ErrorHandling, NSKeyValueCodingAdditions, NSValidation, QueryPageInterface, Serializable, WOActionResults
Direct Known Subclasses:
BASQueryPage, NEUQueryPage, WOLQueryPage

public class D2WQueryPage
extends D2WPage
implements QueryPageInterface, com.webobjects.directtoweb.generation.DTWGeneration

The D2WQueryPage class provides the behavior for the query page Direct to Web templates: BASQueryPage, NEUQueryPage, and WOLQueryPage. The classes for these components inherit directly from D2WQueryPage and define no additional methods or variables.

Most of the methods in this class are accessed, via the EOKeyValueCoding interface defined in the EOControl framework, from the bindings (.wod) file of the Direct to Web template. If you create a Direct to Web template from a query page, you can invoke the methods in this class in the same way.

See Also:
Serialized Form

Inner classes inherited from class com.webobjects.appserver.WOComponent
WOComponent.Event
 
Inner classes inherited from class com.webobjects.foundation.NSKeyValueCoding
NSKeyValueCoding.DefaultImplementation, NSKeyValueCoding.ErrorHandling, NSKeyValueCoding.Null, NSKeyValueCoding.UnknownKeyException, NSKeyValueCoding.Utility, NSKeyValueCoding.ValueAccessor
 
Inner classes inherited from class com.webobjects.foundation.NSKeyValueCodingAdditions
NSKeyValueCodingAdditions.DefaultImplementation, NSKeyValueCodingAdditions.Utility
 
Inner classes inherited from class com.webobjects.foundation.NSValidation
NSValidation.DefaultImplementation, NSValidation.Utility, NSValidation.ValidationException
 
Field Summary
 WODisplayGroup displayGroup
          The WODisplayGroup object that performs the query.
 
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
D2WQueryPage(WOContext aContext)
          Creates an instance of D2WQueryPage with the specified context.
 
Method Summary
 int fetchLimit()
          Gets the maximum number of objects matching the query that the display group fetches.
 String fetchSpecOptions()
          Gets a String containing the state of the fetch specification options: isDeep, usesDistinct, refreshesRefetchedObjects, and fetchLimit.
 boolean isDeep()
          Indicates whether fetches should include sub-entities of the entity of the query fetch specification.
 EOQualifier qualifier()
          Gets the qualifier from query values of the display group.
 WOComponent queryAction()
          Is invoked when the user clicks Search in the query page.
 EODataSource queryDataSource()
          Returns the receiver's EODataSource (defined in the EOControl Framework).
 boolean refreshRefetchedObjects()
          Indicates whether existing objects are overwritten with fetched values when they have been updated or changed.
 WOAssociation replacementAssociationForAssociation(WOAssociation oldAssociation, String oldBinding, com.webobjects.directtoweb.generation.DTWTemplate aTemplate, WOContext aContext)
          Replace the binding queryAction.
 void setQueryDataSource(EODataSource newValue)
          Sets the query data source to the specified data source.
 boolean usesDistinct()
          Indicates whether duplicate objects or records are removed after fetching.
 
Methods inherited from class com.webobjects.directtoweb.D2WPage
alternateRowColor, dataSource, descriptionForResponse, extraBindings, finalize, nextPage, nextPageDelegate, pageWrapperName, setDataSource, setExtraBindings, setNextPage, setNextPageDelegate, showCancel
 
Methods inherited from class com.webobjects.directtoweb.D2WComponent
allEntities, allowCollapsing, applicationPort, assistantPort, attribute, backgroundColorForHeaderRow, backgroundColorForPage, backgroundColorForTable, backgroundColorForTableDark, backgroundColorForTableLight, color, currentSettings, currentUrl, d2wContext, 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, localContext, logout, object, 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, ensureAwakeInContext, frameworkName, generateResponse, handleQueryWithUnboundKey, handleTakeValueForUnboundKey, hasBinding, hasSession, invokeAction, isCachingEnabled, isEventLoggingEnabled, isStateless, logString, name, pageWithName, parent, path, performParentAction, pullValuesFromParent, pushValuesToParent, reset, 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, getClass, hashCode, notify, notifyAll, wait, wait, wait
 
Methods inherited from interface com.webobjects.directtoweb.QueryPageInterface
setNextPageDelegate
 

Field Detail

displayGroup

public WODisplayGroup displayGroup
The WODisplayGroup object that performs the query.
Constructor Detail

D2WQueryPage

public D2WQueryPage(WOContext aContext)
Creates an instance of D2WQueryPage with the specified context.
Parameters:
aContext - instance of WOContext
See Also:
D2WPage.D2WPage(WOContext)
Method Detail

fetchLimit

public int fetchLimit()
Gets the maximum number of objects matching the query that the display group fetches. The fetch limit is used by the fetch specification.
Returns:
the maximum number of objects fetched by the display group

fetchSpecOptions

public String fetchSpecOptions()
Gets a String containing the state of the fetch specification options: isDeep, usesDistinct, refreshesRefetchedObjects, and fetchLimit.
Returns:
a String containing the fetch specification options
See Also:
isDeep(), usesDistinct(), refreshRefetchedObjects(), fetchLimit()

isDeep

public boolean isDeep()
Indicates whether fetches should include sub-entities of the entity of the query fetch specification. Defaults to false. Is used by the fetch specification.
Returns:
true if fetches should include sub-entities; false otherwise

qualifier

public EOQualifier qualifier()
Gets the qualifier from query values of the display group.
See Also:
displayGroup, queryDataSource()

queryAction

public WOComponent queryAction()
Is invoked when the user clicks Search in the query page. Override nextPageDelegate to specify the search behavior.
Returns:
a list page
See Also:
D2WPage.nextPageDelegate()

queryDataSource

public EODataSource queryDataSource()
Description copied from interface: QueryPageInterface
Returns the receiver's EODataSource (defined in the EOControl Framework).
Specified by:
queryDataSource in interface QueryPageInterface
Following copied from interface: com.webobjects.directtoweb.QueryPageInterface
Returns:
a datasource initialized with a qualifier that matches the search criteria the user specified in the query page. This datasource, for example, could be passed on to a List page to display the results.

refreshRefetchedObjects

public boolean refreshRefetchedObjects()
Indicates whether existing objects are overwritten with fetched values when they have been updated or changed. Defaults to false. Is used by the fetch specification.
Returns:
true if existing objects are overwritten with fetched values when the values have been updated or changed; false otherwise

replacementAssociationForAssociation

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

The implementation is subject to change in future releases.

Specified by:
replacementAssociationForAssociation in interface com.webobjects.directtoweb.generation.DTWGeneration
Overrides:
replacementAssociationForAssociation in class D2WPage
Parameters:
oldAssociation - instance of WOAssociation
oldBinding - instance of String
aTemplate - instance of DTWTemplate
aContext - instance of WOContext
Returns:
instance of WOAssociation
See Also:
queryAction(), D2WPage.replacementAssociationForAssociation(WOAssociation, String, DTWTemplate, WOContext)

setQueryDataSource

public void setQueryDataSource(EODataSource newValue)
Sets the query data source to the specified data source.
Parameters:
newValue - instance of EODataSource
See Also:
queryDataSource(), D2WPage.setDataSource(EODataSource)

usesDistinct

public boolean usesDistinct()
Indicates whether duplicate objects or records are removed after fetching. Defaults to false. Is used by the fetch specification.
Returns:
true if duplicates are removed after fetching; false otherwise

Last updated Fri Feb 21 13:15:00 PST 2003.

Copyright © 2003 Apple Computer, Inc.