com.xdev.ui.paging

Class RequisitioningEntityQuery<E>

java.lang.Object

com.xdev.ui.paging.RequisitioningEntityQuery<E>

All Implemented Interfaces:

XdevEntityQuery, Serializable, org.vaadin.addons.lazyquerycontainer.Query

public class RequisitioningEntityQuery<E>
extends Object
implements XdevEntityQuery, Serializable

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
RequisitioningEntityQuery(org.vaadin.addons.lazyquerycontainer.EntityQueryDefinition entityQueryDefinition) Constructor for configuring the query.

Method Summary

Modifier and Type	Method and Description
Item	constructItem() Constructs new item based on QueryDefinition.
boolean	deleteAllItems() Removes all items.
Object[]	getRequiredProperties()
List<Item>	loadItems(int startIndex, int count) Load batch of items.
void	saveItems(List<Item> addedItems, List<Item> modifiedItems, List<Item> removedItems) Saves the modifications done by container to the query result.
void	setRequiredProperties(Object... propertyIDs)
int	size() Number of beans returned by query.

Methods inherited from class java.lang.Object

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

Constructor Detail

RequisitioningEntityQuery

public RequisitioningEntityQuery(org.vaadin.addons.lazyquerycontainer.EntityQueryDefinition entityQueryDefinition)

Constructor for configuring the query.

Parameters:

entityQueryDefinition - The entity query definition.

Method Detail

setRequiredProperties

public void setRequiredProperties(Object... propertyIDs)

Specified by:

setRequiredProperties in interface XdevEntityQuery

getRequiredProperties

public Object[] getRequiredProperties()

Specified by:

getRequiredProperties in interface XdevEntityQuery

constructItem

public final Item constructItem()

Constructs new item based on QueryDefinition.

Specified by:

constructItem in interface org.vaadin.addons.lazyquerycontainer.Query

Returns:

new item.

size

public final int size()

Number of beans returned by query.

Specified by:

size in interface org.vaadin.addons.lazyquerycontainer.Query

Returns:

number of beans.

loadItems

public final List<Item> loadItems(int startIndex,
                                  int count)

Load batch of items.

Specified by:

loadItems in interface org.vaadin.addons.lazyquerycontainer.Query

Parameters:

startIndex - Starting index of the item list.

count - Count of the items to be retrieved.

Returns:

List of items.

saveItems

public final void saveItems(List<Item> addedItems,
                            List<Item> modifiedItems,
                            List<Item> removedItems)

Saves the modifications done by container to the query result. Query will be discarded after changes have been saved and new query loaded so that changed items are sorted appropriately.

Specified by:

saveItems in interface org.vaadin.addons.lazyquerycontainer.Query

Parameters:

addedItems - Items to be inserted.

modifiedItems - Items to be updated.

removedItems - Items to be deleted.

deleteAllItems

public final boolean deleteAllItems()

Removes all items. Query will be discarded after delete all items has been called.

Specified by:

deleteAllItems in interface org.vaadin.addons.lazyquerycontainer.Query

Returns:

true if the operation succeeded or false in case of a failure.