Package com.vaadin.flow.data.provider

Class ConfigurableFilterDataProviderWrapper<T,Q,C,F>

java.lang.Object
com.vaadin.flow.data.provider.DataProviderWrapper<T,Q,F>
com.vaadin.flow.data.provider.ConfigurableFilterDataProviderWrapper<T,Q,C,F>
Type Parameters:
T - the data provider item type
Q - the query filter type
C - the configurable filter type
F - the filter type of the wrapped data provider
All Implemented Interfaces:
ConfigurableFilterDataProvider<T,Q,C>, DataProvider<T,Q>, Serializable
public abstract class ConfigurableFilterDataProviderWrapper<T,Q,C,F> extends DataProviderWrapper<T,Q,F> implements ConfigurableFilterDataProvider<T,Q,C>
A configurable data provider that wraps another data provider by combining any filter from the component with the configured filter and passing that to the wrapped provider through the query.
Since:
1.0
Author:
Vaadin Ltd
See Also:

  • Constructor Details

    • ConfigurableFilterDataProviderWrapper

      public ConfigurableFilterDataProviderWrapper(DataProvider<T,F> dataProvider)
      Creates a new configurable filter data provider by wrapping an existing data provider.
      Parameters:
      dataProvider - the data provider to wrap, not null

  • Method Details

    • getFilter

      protected F getFilter(Query<T,Q> query)
      Description copied from class: DataProviderWrapper
      Gets the filter that should be used in the modified Query.
      Specified by:
      getFilter in class DataProviderWrapper<T,Q,F>
      Parameters:
      query - the current query
      Returns:
      filter for the modified Query

    • combineFilters

      protected abstract F combineFilters(Q queryFilter, C configuredFilter)
      Combines the configured filter and the filter from the query into one filter instance that can be passed to the wrapped data provider. Will not be called if the configured filter is null and the query has no filter.
      Parameters:
      queryFilter - the filter received through the query, or null if no filter was provided in the query
      configuredFilter - the filter that this data provider is configured to use, or null if no filter has been configured
      Returns:
      a filter that combines the two provided queries, or null to not pass any filter to the wrapped data provider

    • setFilter

      public void setFilter(C filter)
      Description copied from interface: ConfigurableFilterDataProvider
      Sets the filter to use for all queries handled by this data provider.
      Specified by:
      setFilter in interface ConfigurableFilterDataProvider<T,Q,C>
      Parameters:
      filter - the filter to set, or null to clear any previously set filter

    • toString

      public String toString()
      Overrides:
      toString in class DataProviderWrapper<T,Q,F>