ariba.ui.meta.persistence
Class ObjectContextDataSource

java.lang.Object
  ariba.ui.table.AWTDataSource
      ariba.ui.meta.persistence.ObjectContextDataSource

public class ObjectContextDataSource
extends AWTDataSource

Constructor Summary

ObjectContextDataSource(java.lang.Class entityClass)

Method Summary

static SortOrdering	createSortOrdering(AWTSortOrdering ordering)
static java.util.List<SortOrdering>	createSortOrderings(java.util.List<AWTSortOrdering> orderings)
boolean	dataSourceDoesSort() Apps that wish to sort in the database and *re-fetch* upon a user sort change should do so by implementing a AWTDataSource subclass and binding that to the AWTDisplayGroup for their table.
void	delete(java.lang.Object object)
boolean	doSortInQuery()
java.util.List	fetchObjects() Returns the list of objects.
java.lang.Class	getEntityClass()
QuerySpecification	getQuerySpecification()
boolean	hasChanges() Should return true when underlying changes in the datasource indicate that the DisplayGroup should automatcally call fetchObjects() as soon as possible to present the user with recent changes.
java.lang.Object	insert()
void	setDoSortInQuery(boolean doSortInQuery)
void	setEntityClass(java.lang.Class entityClass)
void	setQuerySpecification(QuerySpecification querySpecification)
void	setSortOrderings(java.util.List<AWTSortOrdering> orderings)

Methods inherited from class ariba.ui.table.AWTDataSource

entity

Methods inherited from class java.lang.Object

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

Constructor Detail

ObjectContextDataSource

public ObjectContextDataSource(java.lang.Class entityClass)

Method Detail

fetchObjects

public java.util.List fetchObjects()

Description copied from class: AWTDataSource

Returns the list of objects. Should list should be sorted if dataSourceDoesSort() has been overridden to return true

Specified by:

fetchObjects in class AWTDataSource

Returns:

array of fetched objects

setSortOrderings

public void setSortOrderings(java.util.List<AWTSortOrdering> orderings)

Overrides:

setSortOrderings in class AWTDataSource

doSortInQuery

public boolean doSortInQuery()

setDoSortInQuery

public void setDoSortInQuery(boolean doSortInQuery)

dataSourceDoesSort

public boolean dataSourceDoesSort()

Description copied from class: AWTDataSource

Apps that wish to sort in the database and *re-fetch* upon a user sort change should do so by implementing a AWTDataSource subclass and binding that to the AWTDisplayGroup for their table. When using a DataSource, the app should *not* assign objects directly to the DisplayGroup via setObjectArray(), *nor* should it use the DataTable's `list` binding. Instead, it should rely on the DataSource's fetch method to return the (sorted) list of objects.

Overrides:

dataSourceDoesSort in class AWTDataSource

Returns:

whether data source fetchObjects() method will return objects sorted according the most recent sort order set via setSortOrderings()

insert

public java.lang.Object insert()

Overrides:

insert in class AWTDataSource

delete

public void delete(java.lang.Object object)

Overrides:

delete in class AWTDataSource

hasChanges

public boolean hasChanges()

Description copied from class: AWTDataSource

Should return true when underlying changes in the datasource indicate that the DisplayGroup should automatcally call fetchObjects() as soon as possible to present the user with recent changes. Datasources for which fetching is not "free" should override this method to return false either always, or at least unless a special event has occured that indicates re-performing a fetch is warrented.

Overrides:

hasChanges in class AWTDataSource

Returns:

true if a fetch should be triggered immediately.

getEntityClass

public java.lang.Class getEntityClass()

setEntityClass

public void setEntityClass(java.lang.Class entityClass)

getQuerySpecification

public QuerySpecification getQuerySpecification()

setQuerySpecification

public void setQuerySpecification(QuerySpecification querySpecification)

createSortOrdering

public static SortOrdering createSortOrdering(AWTSortOrdering ordering)

createSortOrderings

public static java.util.List<SortOrdering> createSortOrderings(java.util.List<AWTSortOrdering> orderings)