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java.lang.Objectcom.vaadin.data.util.filter.IsNull
public final class IsNull
Simple container filter checking whether an item property value is null. This filter also directly supports in-memory filtering.
| Constructor Summary | |
|---|---|
IsNull(Object propertyId)
Constructor for a filter that compares the value of an item property with null. |
|
| Method Summary | |
|---|---|
boolean |
appliesToProperty(Object propertyId)
Check if a change in the value of a property can affect the filtering result. |
boolean |
equals(Object obj)
|
Object |
getPropertyId()
Returns the property id of the property tested by the filter, not null for valid filters. |
int |
hashCode()
|
boolean |
passesFilter(Object itemId,
Item item)
Check if an item passes the filter (in-memory filtering). |
| Methods inherited from class java.lang.Object |
|---|
clone, finalize, getClass, notify, notifyAll, toString, wait, wait, wait |
| Constructor Detail |
|---|
public IsNull(Object propertyId)
propertyId - the identifier (not null) of the property whose value to check| Method Detail |
|---|
public boolean passesFilter(Object itemId,
Item item)
throws UnsupportedOperationException
Container.Filter
passesFilter in interface Container.FilteritemId - identifier of the item being filtered; may be null when
the item is being added to the containeritem - the item being filtered
UnsupportedOperationException - if the filter cannot be used for in-memory filteringpublic boolean appliesToProperty(Object propertyId)
Container.Filter
appliesToProperty in interface Container.Filterpublic boolean equals(Object obj)
equals in class Objectpublic int hashCode()
hashCode in class Objectpublic Object getPropertyId()
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