Java tutorial
/* MetaDB: A Distributed Metadata Collection Tool Copyright 2011, Lafayette College, Eric Luhrs, Haruki Yamaguchi, Long Ho. This file is part of MetaDB. MetaDB is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version. MetaDB is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with MetaDB. If not, see <http://www.gnu.org/licenses/>. */ package edu.lafayette.metadb.web.attributesman; import java.io.IOException; import java.io.PrintWriter; import java.util.ArrayList; import javax.servlet.ServletException; import javax.servlet.http.HttpServlet; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import org.json.JSONArray; import org.json.JSONObject; import edu.lafayette.metadb.model.attributes.AdminDescAttribute; import edu.lafayette.metadb.model.attributes.AdminDescAttributesDAO; import edu.lafayette.metadb.model.commonops.Global; import edu.lafayette.metadb.model.commonops.MetaDbHelper; import edu.lafayette.metadb.model.elements.ElementsDAO; /** * Servlet to display the list of administrative/descriptive attributes for a project. * * @author Long L. Ho * @author Miguel Haruki Yamaguchi * @version 1.0 * */ public class ShowAdminDescAttributes extends HttpServlet { private static final long serialVersionUID = 1L; /** * @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse * response) */ protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { PrintWriter out = response.getWriter(); try { String projname = (String) request.getSession(false).getAttribute(Global.SESSION_PROJECT); String type = request.getParameter("type"); //MetaDbHelper.note("Trying to get "+type+" attributes for "+projname+"..."); ArrayList<AdminDescAttribute> mdList = AdminDescAttributesDAO.getAdminDescAttributes(projname, type); JSONObject output = new JSONObject(); JSONArray attrList = new JSONArray(); output.put("elements", ElementsDAO.getElementList()); output.put("type", type); if (mdList != null) { //if (mdList.isEmpty()) //mdList.add(new AdminDescAttribute(projname, (type.equals("administrative") ? "identifier" : "title"), "", // type, false, false, false, false, false, false, false, 0)); for (int i = 0; i < mdList.size(); i++) { JSONObject attribute = new JSONObject(); AdminDescAttribute t = mdList.get(i); attribute.put("element", t.getElement()); attribute.put("label", t.getLabel()); attribute.put("id", t.getId()); attribute.put("displayDate", t.isReadableDate()); attribute.put("searchDate", t.isSearchableDate()); attribute.put("large", t.isLarge()); attribute.put("controlled", t.isControlled()); attribute.put("multiple", t.isMultiple()); attribute.put("additions", t.isAdditions()); attribute.put("sorted", t.isSorted()); attribute.put("error", t.isError()); attribute.put("vocab", AdminDescAttributesDAO.getControlledVocab(t.getId())); attrList.put(attribute); } output.put("data", attrList); } out.print(output); } catch (Exception e) { MetaDbHelper.logEvent(e); } out.close(); } }