Module org.apache.wicket.extensions

Package org.apache.wicket.extensions.markup.html.repeater.data.table

Class LambdaColumn<T,S>

java.lang.Object

org.apache.wicket.extensions.markup.html.repeater.data.table.AbstractColumn<T,S>

org.apache.wicket.extensions.markup.html.repeater.data.table.LambdaColumn<T,S>

Type Parameters:

T - The Model object type

S - the type of the sort property

All Implemented Interfaces:

Serializable, ICellPopulator<T>, IExportableColumn<T,S>, IColumn<T,S>, IStyledColumn<T,S>, IDetachable, org.apache.wicket.util.io.IClusterable

public class LambdaColumn<T,S>
extends AbstractColumn<T,S>
implements IExportableColumn<T,S>

An implementation of column that adds a label to the cell whose model is determined by the provided SerializableFunction that is evaluated against the current row's model object

Example for a table of Contacts:

 columns[0] = new LambdaColumn(new Model<String>("First Name"), Contact::getFirstName);
 

The above will attach a label to the cell which calls #getFirstName() for each displayed contact.

See Also:

• Serialized Form

Constructor Summary

Constructors

Constructor	Description
LambdaColumn(IModel<String> displayModel, org.danekja.java.util.function.serializable.SerializableFunction<T,?> function)	Creates a column that is not sortable.
LambdaColumn(IModel<String> displayModel, S sortProperty, org.danekja.java.util.function.serializable.SerializableFunction<T,?> function)	Creates a property column that is also sortable.

Method Summary

Modifier and Type	Method	Description
IModel<?>	getDataModel(IModel<T> rowModel)	Factory method for generating a model that will generated the displayed value.
void	populateItem(Item<ICellPopulator<T>> item, String componentId, IModel<T> rowModel)	Method used to populate a cell in the DataGridView Implementation MUST add a component to the cellItem using the component id provided by componentId argument, otherwise a WicketRuntimeException will be thrown

Methods inherited from class org.apache.wicket.extensions.markup.html.repeater.data.table.AbstractColumn

detach, getCssClass, getDisplayModel, getHeader, getSortProperty

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.wicket.extensions.markup.html.repeater.data.table.IColumn

getHeader, getHeaderColspan, getHeaderRowspan, getSortProperty, isSortable

Methods inherited from interface org.apache.wicket.model.IDetachable

detach

Methods inherited from interface org.apache.wicket.extensions.markup.html.repeater.data.table.export.IExportableColumn

getDisplayModel

Constructor Details

LambdaColumn

public LambdaColumn(IModel<String> displayModel,
 org.danekja.java.util.function.serializable.SerializableFunction<T,?> function)

Creates a column that is not sortable.

Parameters:

displayModel - display model

function - Wicket function to be applied to each row

LambdaColumn

public LambdaColumn(IModel<String> displayModel,
 S sortProperty,
 org.danekja.java.util.function.serializable.SerializableFunction<T,?> function)

Creates a property column that is also sortable.

Parameters:

displayModel - display model

sortProperty - sort property

function - Wicket function to be applied to each row

Method Details

populateItem

public void populateItem(Item<ICellPopulator<T>> item,
 String componentId,
 IModel<T> rowModel)

Description copied from interface: ICellPopulator

Method used to populate a cell in the DataGridView Implementation MUST add a component to the cellItem using the component id provided by componentId argument, otherwise a WicketRuntimeException will be thrown

Specified by:

populateItem in interface ICellPopulator<T>

Parameters:

item - the item representing the current table cell being rendered

componentId - the id of the component used to render the cell (only one component should be added to the cell)

rowModel - the model of the row item being rendered. this model usually contains the model provided by the data provider.

See Also:

• Item

getDataModel

public IModel<?> getDataModel(IModel<T> rowModel)

Factory method for generating a model that will generated the displayed value.

Specified by:

getDataModel in interface IExportableColumn<T,S>

Parameters:

rowModel -

Returns:

model