edu.lafayette.metadb.web.attributesman.UpdateAdminDescAttributes.java Source code

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Here is the source code for edu.lafayette.metadb.web.attributesman.UpdateAdminDescAttributes.java

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/*
  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 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.AdminDescAttributesDAO;
import edu.lafayette.metadb.model.attributes.AdminDescAttributesDAO.DuplicateAttributeException;
import edu.lafayette.metadb.model.commonops.Global;
import edu.lafayette.metadb.model.commonops.MetaDbHelper;

/**
 * Servlet to handle the updating of administrative/descriptive attributes.
 * 
* @author Long L. Ho
* @author Miguel Haruki Yamaguchi
* @version 1.0 
 * 
 */
public class UpdateAdminDescAttributes 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();
        JSONObject output = new JSONObject();
        String project = (String) request.getSession(false).getAttribute(Global.SESSION_PROJECT);
        String notification = "";
        boolean success = true;
        try {
            JSONObject inputs = new JSONObject(request.getParameter("data"));
            String type = inputs.getString("type");
            JSONArray data = (JSONArray) inputs.get("data");
            for (int i = 0; i < data.length(); i++) {
                JSONObject datum = (JSONObject) data.get(i);
                String element = datum.getString("elements");
                String label = datum.getString("label");
                int id = -1;
                try {
                    id = Integer.parseInt(datum.getString("id"));
                } catch (NumberFormatException e) {
                    id = -1;
                }
                boolean isSorted = datum.getString("sorted").equals("true");
                boolean isLarge = datum.getString("large").equals("true");
                boolean isControlled = datum.getString("controlled").equals("true");
                boolean isMultiple = datum.getString("multiple").equals("true");
                boolean isAdditions = datum.getString("additions").equals("true");
                boolean isReadableDate = datum.getString("display-date").equals("true");
                boolean isSearchableDate = datum.getString("search-date").equals("true");

                try {
                    AdminDescAttributesDAO.update(project, id, element, label, type, isLarge, isReadableDate,
                            isSearchableDate, isControlled, isMultiple, isAdditions, isSorted, i);
                } catch (DuplicateAttributeException e) {
                    // MetaDbHelper.note("DuplicateAttributeException caught in servlet");
                    success = false;
                    notification += "Duplicate element.qualifier fields are not permitted. The second instance of <b><i>"
                            + element + (label.equals("") ? "" : "." + label)
                            + "</b></i> could not be saved. <br/>";
                    //MetaDbHelper.note("Duplicate fields found.");    

                } catch (Exception e) {
                    success = false;
                    notification += "Attr " + i + " cannot be updated:<br/>";
                    notification += "Project " + project + ", field " + element + " " + label + " at index " + i
                            + "<br/>";
                    //MetaDbHelper.note("Cannot update: "+project+" "+element+" "+label+" "+type+" "+isLarge+" "+isControlled+" "+isSorted+" "+isMultiple+" "+isAdditions+" "+i);   
                }
            }
            output.put("success", success);
            output.put("message", notification);
            out.print(output);
        } catch (Exception e) {
            MetaDbHelper.logEvent(e);
        }
        out.close();
    }

}