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com.vaadin.flow.data.provider.hierarchy.
Class AbstractHierarchicalDataProvider<T,F>
- java.lang.Object
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- com.vaadin.flow.data.provider.AbstractDataProvider<T,F>
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- com.vaadin.flow.data.provider.hierarchy.AbstractHierarchicalDataProvider<T,F>
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Type Parameters:
T- data typeF- filter typeAll Implemented Interfaces:
DataProvider<T,F>, HierarchicalDataProvider<T,F>, Serializable
Direct Known Subclasses:
public abstract class AbstractHierarchicalDataProvider<T,F> extends AbstractDataProvider<T,F> implements HierarchicalDataProvider<T,F>Abstract hierarchical data provider implementation which takes care of item refreshes and associated events.
Since:
1.2
Author:
Vaadin Ltd
See Also:
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Constructor Summary
Constructors Constructor and Description AbstractHierarchicalDataProvider()
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Method Summary
All Methods Modifier and Type Method and Description HierarchicalConfigurableFilterDataProvider<T,Void,F>withConfigurableFilter()Wraps this data provider to create a data provider that supports programmatically setting a filter but no filtering through the query.
<Q,C> HierarchicalConfigurableFilterDataProvider<T,Q,C>withConfigurableFilter(SerializableBiFunction<Q,C,F> filterCombiner)Wraps this data provider to create a data provider that supports programmatically setting a filter that will be combined with a filter provided through the query.
<C> HierarchicalDataProvider<T,C>withConvertedFilter(SerializableFunction<C,F> filterConverter)Wraps this data provider to create a data provider that uses a different filter type.
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Methods inherited from class com.vaadin.flow.data.provider.AbstractDataProvider
addDataProviderListener, addListener, fireEvent, refreshAll, refreshItem, refreshItem
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Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
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Methods inherited from interface com.vaadin.flow.data.provider.hierarchy.HierarchicalDataProvider
fetch, fetchChildren, getChildCount, hasChildren, size
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Methods inherited from interface com.vaadin.flow.data.provider.DataProvider
addDataProviderListener, fromCallbacks, fromFilteringCallbacks, fromStream, getId, isInMemory, ofCollection, ofItems, refreshAll, refreshItem, refreshItem
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Method Detail
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withConfigurableFilter
public <Q,C> HierarchicalConfigurableFilterDataProvider<T,Q,C> withConfigurableFilter(SerializableBiFunction<Q,C,F> filterCombiner)Description copied from interface:
DataProviderWraps this data provider to create a data provider that supports programmatically setting a filter that will be combined with a filter provided through the query.
Specified by:
withConfigurableFilterin interfaceDataProvider<T,F>Specified by:
withConfigurableFilterin interfaceHierarchicalDataProvider<T,F>Type Parameters:
Q- the query filter typeC- the configurable filter typeParameters:
filterCombiner- a callback for combining and the configured filter with the filter from the query to get a filter to pass to the wrapped provider. Either parameter might benull, but the callback will not be invoked at all if both would benull. Notnull.Returns:
a data provider with a configurable filter, not
nullSee Also:
DataProvider.withConfigurableFilter(),ConfigurableFilterDataProvider.setFilter(Object)
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withConvertedFilter
public <C> HierarchicalDataProvider<T,C> withConvertedFilter(SerializableFunction<C,F> filterConverter)Description copied from interface:
DataProviderWraps this data provider to create a data provider that uses a different filter type. This can be used for adapting this data provider to a filter type provided by a Component such as ComboBox.
For example receiving a String from ComboBox and making a Predicate based on it:
DataProvider<Person, Predicate<Person>> dataProvider; // ComboBox uses String as the filter type DataProvider<Person, String> wrappedProvider = dataProvider .withConvertedFilter(filterText -> { Predicate<Person> predicate = person -> person.getName() .startsWith(filterText); return predicate; }); comboBox.setDataProvider(wrappedProvider);Specified by:
withConvertedFilterin interfaceDataProvider<T,F>Specified by:
withConvertedFilterin interfaceHierarchicalDataProvider<T,F>Type Parameters:
C- the filter type that the wrapped data provider accepts; typically provided by a ComponentParameters:
filterConverter- callback that converts the filter in the query of the wrapped data provider into a filter supported by this data provider. Will only be called if the query contains a filter. NotnullReturns:
wrapped data provider, not
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withConfigurableFilter
public HierarchicalConfigurableFilterDataProvider<T,Void,F> withConfigurableFilter()Description copied from interface:
DataProviderWraps this data provider to create a data provider that supports programmatically setting a filter but no filtering through the query.
Specified by:
withConfigurableFilterin interfaceDataProvider<T,F>Specified by:
withConfigurableFilterin interfaceHierarchicalDataProvider<T,F>Returns:
a data provider with a configurable filter, not
nullSee Also:
DataProvider.withConfigurableFilter(SerializableBiFunction),ConfigurableFilterDataProvider.setFilter(Object)
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