/**
* Licensed to Apereo under one or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information regarding copyright ownership. Apereo
* licenses this file to you under the Apache License, Version 2.0 (the "License"); you may not use
* this file except in compliance with the License. You may obtain a copy of the License at the
* following location:
*
* <p>http://www.apache.org/licenses/LICENSE-2.0
*
* <p>Unless required by applicable law or agreed to in writing, software distributed under the
* License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either
* express or implied. See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apereo.portal.web.view;
import com.google.visualization.datasource.datatable.DataTable;
import com.google.visualization.datasource.render.CsvRenderer;
import com.ibm.icu.util.ULocale;
import java.io.IOException;
import java.io.PrintWriter;
import java.util.Map;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
/**
* Renders a google {@link DataTable} to a CSV
*
*/
public class GoogleCsvDataTableView extends AbstractGoogleDataTableView {
public static final String OUT_FILE_NAME_ATTRIBUTE = "outFileName";
protected void renderDataTable(
Map<String, Object> model,
DataTable data,
HttpServletRequest request,
HttpServletResponse response)
throws IOException {
final CharSequence csvDataTable =
CsvRenderer.renderDataTable(data, ULocale.forLocale(request.getLocale()), ",");
response.setContentType("text/csv; charset=UTF-8");
String outFileName = (String) model.get(OUT_FILE_NAME_ATTRIBUTE);
if (outFileName == null) {
outFileName = "dataTable.csv";
}
// For security reasons, make sure the file extension is ".csv".
else if (!outFileName.toLowerCase().endsWith(".csv")) {
outFileName = outFileName + ".csv";
}
response.setHeader("Content-Disposition", "attachment; filename=" + outFileName);
response.setContentLength(csvDataTable.length());
final PrintWriter writer = response.getWriter();
writer.append(csvDataTable);
}
}