/**
*
*/
package org.molgenis.framework.ui.commands;
import java.io.OutputStream;
import java.util.List;
import org.molgenis.framework.db.Database;
import org.molgenis.framework.db.DatabaseException;
import org.molgenis.framework.server.MolgenisRequest;
import org.molgenis.framework.ui.FormController;
import org.molgenis.framework.ui.FormModel;
import org.molgenis.framework.ui.ScreenController;
import org.molgenis.framework.ui.ScreenModel;
import org.molgenis.framework.ui.html.ActionInput;
import org.molgenis.framework.ui.html.HtmlInput;
import org.molgenis.io.csv.CsvWriter;
import org.molgenis.util.Entity;
import org.molgenis.util.tuple.EntityTuple;
/**
* This command downloads the records currently shown as csv.
*
* @author Morris Swertz
*
* @param <E>
*/
public class DownloadVisibleCommand extends SimpleCommand
{
private static final long serialVersionUID = -6279819301321361448L;
public DownloadVisibleCommand(String name, ScreenController<?> parentScreen)
{
super(name, parentScreen);
this.setDownload(true);
this.setLabel("Download visible (.txt)");
this.setIcon("generated-res/img/download.png");
this.setMenu("File");
}
@Override
public ScreenModel.Show handleRequest(Database db, MolgenisRequest request, OutputStream csvDownload)
throws Exception
{
FormModel<?> view = this.getFormScreen();
List<String> fieldsToExport = ((FormController<?>) this.getController()).getVisibleColumnNames();
CsvWriter csvWriter = new CsvWriter(csvDownload);
try
{
csvWriter.writeColNames(fieldsToExport);
for (Entity e : view.getRecords())
csvWriter.write(new EntityTuple(e));
}
finally
{
csvWriter.close();
}
return ScreenModel.Show.SHOW_MAIN;
}
@Override
public List<ActionInput> getActions()
{
return null;
}
@Override
public List<HtmlInput<?>> getInputs() throws DatabaseException
{
return null;
}
}