Module org.apache.wicket.extensions

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

Interface IDataExporter

All Superinterfaces:

org.apache.wicket.util.io.IClusterable, Serializable

All Known Implementing Classes:

AbstractDataExporter, CSVDataExporter

public interface IDataExporter
extends org.apache.wicket.util.io.IClusterable

Exports data provided by a IDataProvider as described by IExportableColumns. This interface is used by ExportToolbar to provide the export functionality.

Author:

Jesse Long

See Also:

• ExportToolbar
• IExportableColumn

Method Summary

Modifier and Type	Method	Description
<T> void	exportData(IDataProvider<T> dataProvider, List<IExportableColumn<T,?>> columns, OutputStream outputStream)	Exports the data provided by the IDataProvider to the OutputStream.
String	getContentType()	Returns the MIME content type of the export data type.
IModel<String>	getDataFormatNameModel()	Returns a model of the exported data format name.
String	getFileNameExtension()	Returns the file name extensions for the exported data, without the ".".

Method Details

getDataFormatNameModel

IModel<String> getDataFormatNameModel()

Returns a model of the exported data format name. This should be something like "CSV" or "Excel" etc. The value of the model returned is displayed as the export type in the ExportToolbar.

Returns:

a model of the exported data format name.

getContentType

String getContentType()

Returns the MIME content type of the export data type. This could be something like "text/csv". This is used to provide the correct content type when downloading the exported data.

Returns:

the MIME content type of the export data type.

getFileNameExtension

String getFileNameExtension()

Returns the file name extensions for the exported data, without the ".". For CSV, this should be "csv". For Excel exports, this should be "xls".

Returns:

the file name extensions for the exported data, without the ".".

exportData

<T> void exportData(IDataProvider<T> dataProvider,
 List<IExportableColumn<T,?>> columns,
 OutputStream outputStream)
             throws IOException

Exports the data provided by the IDataProvider to the OutputStream.

Type Parameters:

T - The type of each row of data provided by the IDataProvider.

Parameters:

dataProvider - The IDataProvider from which to retrieve the data.

columns - The IExportableColumn to use to describe the data.

outputStream - The OutputStream to which to write the exported data.

Throws:

IOException - If an error occurs.