edu.lafayette.metadb.web.controlledvocab.ShowVocab.java Source code

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Here is the source code for edu.lafayette.metadb.web.controlledvocab.ShowVocab.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.controlledvocab;

import java.io.IOException;
import java.io.OutputStreamWriter;
import java.io.PrintWriter;
import java.util.Iterator;
import java.util.Set;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.json.JSONArray;

import edu.lafayette.metadb.model.commonops.MetaDbHelper;
import edu.lafayette.metadb.model.controlledvocab.ControlledVocabDAO;

/**
 * Servlet implementation class ShowVocab
 */
public class ShowVocab extends HttpServlet {
    private static final long serialVersionUID = 1L;

    protected void doGet(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        doPost(request, response);
    }

    /**
    * @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse response)
    */
    protected void doPost(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        // TODO Auto-generated method stub
        String vocabName = request.getParameter("vocab-name");
        //MetaDbHelper.note("Vocab Name in Servlet: "+vocabName);
        PrintWriter out = new PrintWriter(new OutputStreamWriter(response.getOutputStream(), "UTF8"), true);
        response.setCharacterEncoding("utf-8");
        request.setCharacterEncoding("utf-8");
        JSONArray vocab = new JSONArray();
        try {
            Set<String> vocabList = ControlledVocabDAO.getControlledVocab(vocabName);
            Iterator<String> itr = vocabList.iterator();
            String[] term = request.getParameterValues("term");

            boolean autocomplete = term != null && !(term[0].equals(""));
            while (itr.hasNext()) {
                String entry = itr.next();
                if (autocomplete) {
                    //MetaDbHelper.note("Entry: "+entry+", query: "+term[0]);
                    if (entry.toLowerCase().startsWith(term[0].toLowerCase()))
                        vocab.put(entry);
                } else
                    vocab.put(entry);
            }
            out.print(vocab);
        } catch (Exception e) {
            MetaDbHelper.logEvent(e);
        }
        out.flush();
    }

}