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com.vaadin.data.
Interface HasDataProvider<T>
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Type Parameters:
T- the item data typeAll Superinterfaces:
ClientConnector,Component,Connector,HasItems<T>,Serializable,SizeableAll Known Subinterfaces:
All Known Implementing Classes:
CheckBoxGroup,Grid,ListSelect,NativeSelect,RadioButtonGroup,Tree,TreeGrid,TwinColSelectpublic interface HasDataProvider<T> extends HasItems<T>A generic interface for listing components that use a data provider for showing data.
A listing component should implement either this interface or
HasFilterableDataProvider, but not both.Since:
8.0
Author:
Vaadin Ltd.
See Also:
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Nested Class Summary
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Nested classes/interfaces inherited from interface com.vaadin.server.ClientConnector
ClientConnector.AttachEvent, ClientConnector.AttachListener, ClientConnector.ConnectorErrorEvent, ClientConnector.DetachEvent, ClientConnector.DetachListener
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Nested classes/interfaces inherited from interface com.vaadin.ui.Component
Component.ErrorEvent, Component.Event, Component.Focusable, Component.Listener
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Nested classes/interfaces inherited from interface com.vaadin.server.Sizeable
Sizeable.Unit
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Field Summary
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Fields inherited from interface com.vaadin.server.Sizeable
SIZE_UNDEFINED, UNITS_CM, UNITS_EM, UNITS_EX, UNITS_INCH, UNITS_MM, UNITS_PERCENTAGE, UNITS_PICAS, UNITS_PIXELS, UNITS_POINTS
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Method Summary
All Methods Modifier and Type Method Description voidsetDataProvider(DataProvider<T,?> dataProvider)Sets the data provider for this listing.
default voidsetItems(Collection<T> items)Sets the data items of this component provided as a collection.
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Methods inherited from interface com.vaadin.server.ClientConnector
addAttachListener, addDetachListener, beforeClientResponse, detach, encodeState, getErrorHandler, getExtensions, getRpcManager, getStateType, handleConnectorRequest, isAttached, isConnectorEnabled, markAsDirty, markAsDirtyRecursive, removeAttachListener, removeDetachListener, removeExtension, requestRepaint, requestRepaintAll, retrievePendingRpcCalls, setErrorHandler
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Methods inherited from interface com.vaadin.ui.Component
addListener, addStyleName, addStyleNames, attach, getCaption, getDescription, getIcon, getId, getLocale, getParent, getPrimaryStyleName, getStyleName, getUI, isEnabled, isVisible, readDesign, removeListener, removeStyleName, removeStyleNames, setCaption, setEnabled, setIcon, setId, setParent, setPrimaryStyleName, setStyleName, setStyleName, setVisible, writeDesign
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Methods inherited from interface com.vaadin.shared.Connector
getConnectorId
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Methods inherited from interface com.vaadin.data.HasItems
getDataProvider, setItems, setItems
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Methods inherited from interface com.vaadin.server.Sizeable
getHeight, getHeightUnits, getWidth, getWidthUnits, setHeight, setHeight, setHeightFull, setHeightUndefined, setSizeFull, setSizeUndefined, setWidth, setWidth, setWidthFull, setWidthUndefined
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Method Detail
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setDataProvider
void setDataProvider(DataProvider<T,?> dataProvider)Sets the data provider for this listing. The data provider is queried for displayed items as needed.
Parameters:
dataProvider- the data provider, not null
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setItems
default void setItems(Collection<T> items)Description copied from interface:
HasItemsSets the data items of this component provided as a collection.
The provided items are wrapped into a
ListDataProviderand this instance is used as a data provider for thesetDataProvider(DataProvider)method. It means that the items collection can be accessed later on viaListDataProvider.getItems():HasDataProvider<String> listing = new CheckBoxGroup<>(); listing.setItems(Arrays.asList("a","b")); ... Collection<String> collection = ((ListDataProvider<String>)listing.getDataProvider()).getItems();The provided collection instance may be used as-is. Subsequent modification of the collection might cause inconsistent data to be shown in the component unless it is explicitly instructed to read the data again.
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