Package com.vaadin.flow.component.virtuallist.paging

Class PagelessDataCommunicator<T>

java.lang.Object

com.vaadin.flow.data.provider.DataCommunicator<T>

com.vaadin.flow.component.virtuallist.paging.PagelessDataCommunicator<T>

Type Parameters:

T - item type

All Implemented Interfaces:

Serializable

public class PagelessDataCommunicator<T>
extends DataCommunicator<T>

DataCommunicator implementation which disables the paging and does not allow the user to set up the page for VirtualList.

See Also:

• Serialized Form

Nested Class Summary

Nested classes/interfaces inherited from class com.vaadin.flow.data.provider.DataCommunicator

DataCommunicator.EmptyDataProvider<T1>, DataCommunicator.Filter<F>

Field Summary

Fields inherited from class com.vaadin.flow.data.provider.DataCommunicator

DEFAULT_PAGE_INCREASE_COUNT

Constructor Summary

Constructors

Constructor	Description
PagelessDataCommunicator(DataGenerator<T> dataGenerator, ArrayUpdater arrayUpdater, SerializableConsumer<elemental.json.JsonArray> dataUpdater, StateNode stateNode)

Method Summary

Modifier and Type	Method	Description
boolean	isPagingEnabled()	Returns whether paged queries are enabled or not.
void	setPageSize(int pageSize)	Sets the page size that is used to fetch items.
void	setPagingEnabled(boolean pagingEnabled)	Sets whether paged queries or offset/limit queries will be used.

Methods inherited from class com.vaadin.flow.data.provider.DataCommunicator

buildQuery, confirmUpdate, enablePushUpdates, fetchFromProvider, getBackEndSorting, getDataProvider, getDataProviderSize, getFilter, getInMemorySorting, getItem, getItemCount, getItemCountEstimate, getItemCountEstimateIncrease, getKeyMapper, getPageSize, getPassivatedKeys, handleDataRefreshEvent, isDefinedSize, isFetchEnabled, isItemActive, refresh, reset, setBackEndSorting, setCountCallback, setDataProvider, setDataProvider, setDefinedSize, setFetchEnabled, setInMemorySorting, setItemCountEstimate, setItemCountEstimateIncrease, setKeyMapper, setRequestedRange

Methods inherited from class java.lang.Object

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

Constructor Details

PagelessDataCommunicator

public PagelessDataCommunicator(DataGenerator<T> dataGenerator,
 ArrayUpdater arrayUpdater,
 SerializableConsumer<elemental.json.JsonArray> dataUpdater,
 StateNode stateNode)

Method Details

setPageSize

public void setPageSize(int pageSize)

Description copied from class: DataCommunicator

Sets the page size that is used to fetch items. The queries to data provider are a multiple of the page size.

Overrides:

setPageSize in class DataCommunicator<T>

Parameters:

pageSize - the page size to set

setPagingEnabled

public void setPagingEnabled(boolean pagingEnabled)

Description copied from class: DataCommunicator

Sets whether paged queries or offset/limit queries will be used.

Overrides:

setPagingEnabled in class DataCommunicator<T>

Parameters:

pagingEnabled - true for paged queries, false for offset/limit queries

isPagingEnabled

public boolean isPagingEnabled()

Description copied from class: DataCommunicator

Returns whether paged queries are enabled or not.

When the paged queries are supported, the Query.getPage() and Query.getPageSize() can be used to fetch items from the paged repositories. Otherwise, one should use Query.getOffset() and Query.getLimit(). Paged queries are enabled by default.

Overrides:

isPagingEnabled in class DataCommunicator<T>

Returns:

true for paged queries, false for offset/limit queries

See Also:

• DataCommunicator.setPagingEnabled(boolean)