Package io.jmix.ui.component.datagrid

Class HierarchicalDataGridDataProvider<T>

java.lang.Object

com.vaadin.data.provider.AbstractDataProvider<T,com.vaadin.server.SerializablePredicate<T>>

io.jmix.ui.component.datagrid.DataGridDataProvider<T>

io.jmix.ui.component.datagrid.SortableDataGridDataProvider<T>

io.jmix.ui.component.datagrid.HierarchicalDataGridDataProvider<T>

All Implemented Interfaces:

com.vaadin.data.provider.DataProvider<T,com.vaadin.server.SerializablePredicate<T>>, com.vaadin.data.provider.HierarchicalDataProvider<T,com.vaadin.server.SerializablePredicate<T>>, EnhancedHierarchicalDataProvider<T>, SortableDataProvider<T>, Serializable

public class HierarchicalDataGridDataProvider<T>
extends SortableDataGridDataProvider<T>
implements com.vaadin.data.provider.HierarchicalDataProvider<T,com.vaadin.server.SerializablePredicate<T>>, EnhancedHierarchicalDataProvider<T>

See Also:

• Serialized Form

Field Summary

Fields inherited from class io.jmix.ui.component.datagrid.DataGridDataProvider

dataEventsDelegate, dataGridItems, itemSetChangeSubscription, selectedItemChangeSubscription, stateChangeSubscription, valueChangeSubscription

Constructor Summary

Constructors

Constructor	Description
HierarchicalDataGridDataProvider(TreeDataGridItems<T> dataGridSource, DataGridItemsEventsDelegate<T> dataEventsDelegate)

Method Summary

Modifier and Type	Method	Description
Stream<T>	fetchChildren(com.vaadin.data.provider.HierarchicalQuery<T,com.vaadin.server.SerializablePredicate<T>> query)
int	getChildCount(com.vaadin.data.provider.HierarchicalQuery<T,com.vaadin.server.SerializablePredicate<T>> query)
int	getLevel(T item)	Returns the hierarchy level of an item.
T	getParent(T item)	Returns the parent of given item.
TreeDataGridItems<T>	getTreeDataGridSource()
boolean	hasChildren(T item)

Methods inherited from class io.jmix.ui.component.datagrid.SortableDataGridDataProvider

getSortableDataGridSource, resetSortOrder, sort

Methods inherited from class io.jmix.ui.component.datagrid.DataGridDataProvider

datasourceItemSetChanged, datasourceSelectedItemChanged, datasourceStateChanged, datasourceValueChanged, fetch, getDataGridItems, getId, isInMemory, size, unbind

Methods inherited from class com.vaadin.data.provider.AbstractDataProvider

addDataProviderListener, addListener, fireEvent, refreshAll, refreshItem

Methods inherited from class java.lang.Object

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

Methods inherited from interface com.vaadin.data.provider.DataProvider

addDataProviderListener, getId, isInMemory, refreshAll, refreshItem, withConfigurableFilter, withConfigurableFilter, withConvertedFilter

Methods inherited from interface com.vaadin.data.provider.HierarchicalDataProvider

fetch, size

Constructor Details

HierarchicalDataGridDataProvider

public HierarchicalDataGridDataProvider(TreeDataGridItems<T> dataGridSource,
 DataGridItemsEventsDelegate<T> dataEventsDelegate)

Method Details

getTreeDataGridSource

public TreeDataGridItems<T> getTreeDataGridSource()

getChildCount

public int getChildCount(com.vaadin.data.provider.HierarchicalQuery<T,com.vaadin.server.SerializablePredicate<T>> query)

Specified by:

getChildCount in interface com.vaadin.data.provider.HierarchicalDataProvider<T,com.vaadin.server.SerializablePredicate<T>>

fetchChildren

public Stream<T> fetchChildren(com.vaadin.data.provider.HierarchicalQuery<T,com.vaadin.server.SerializablePredicate<T>> query)

Specified by:

fetchChildren in interface com.vaadin.data.provider.HierarchicalDataProvider<T,com.vaadin.server.SerializablePredicate<T>>

hasChildren

public boolean hasChildren(T item)

Specified by:

hasChildren in interface com.vaadin.data.provider.HierarchicalDataProvider<T,com.vaadin.server.SerializablePredicate<T>>

getLevel

public int getLevel(T item)

Description copied from interface: EnhancedHierarchicalDataProvider

Returns the hierarchy level of an item.

Specified by:

getLevel in interface EnhancedHierarchicalDataProvider<T>

Parameters:

item - the item to get level

Returns:

the level of the given item

getParent

@Nullable
public T getParent(T item)

Description copied from interface: EnhancedHierarchicalDataProvider

Returns the parent of given item.

Specified by:

getParent in interface EnhancedHierarchicalDataProvider<T>

Parameters:

item - the item to get parent

Returns:

the parent of given item or null if no parent