Mercurial > hg > IndexMetaContextualizer

annotate src/main/java/de/mpiwg/indexmeta/web/servlet/methods/JSONGetCtxFromDB.java @ 7:bc57f2660b0f

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implementation of web service
author Jorge Urzua <jurzua@mpiwg-berlin.mpg.de>
date Fri, 12 Apr 2013 17:48:42 +0200
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1 package de.mpiwg.indexmeta.web.servlet.methods;
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2
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3 import java.io.IOException;
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4 import java.io.PrintWriter;
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5 import java.util.ArrayList;
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6 import java.util.List;
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8 import javax.servlet.ServletException;
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9 import javax.servlet.http.HttpServletRequest;
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10 import javax.servlet.http.HttpServletResponse;
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12 import org.apache.commons.lang.StringUtils;
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13 import org.json.JSONArray;
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14 import org.json.JSONException;
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15 import org.json.JSONObject;
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16
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17 import de.mpiwg.indexmeta.bo.Contextualization;
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18 import de.mpiwg.indexmeta.services.DataProvider;
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19 import de.mpiwg.indexmeta.web.utils.JSONUtils;
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20
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21 public class JSONGetCtxFromDB extends AbstractServletMethod {
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22
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23 public static void execute(DataProvider dp,
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24 HttpServletRequest request, HttpServletResponse response)
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25 throws ServletException, IOException, JSONException {
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27 JSONObject json = new JSONObject();
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29 long startExecution = System.currentTimeMillis();
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31 String indexMetaId = getString(request, p_indexMetaId);
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32 String type = getString(request, p_type);
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33 String elementId = getString(request, p_elementId);
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34 String remoteId = getString(request, p_remoteId);
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36 List<Contextualization> rs = null;
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37
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38 if (StringUtils.isNotEmpty(indexMetaId)) {
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39
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40 rs = dp.getCtxByIndexMetaId(indexMetaId);
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41 rs = filterByType(rs, type);
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42 rs = filterByElementId(rs, elementId);
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43 rs = filterByRemoteId(rs, remoteId);
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44
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45 } else if (StringUtils.isNotEmpty(type)) {
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47 rs = dp.getCtxByType(type);
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48 rs = filterByElementId(rs, elementId);
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49 rs = filterByRemoteId(rs, remoteId);
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50
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51 } else {
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52 response.sendError(HttpServletResponse.SC_BAD_REQUEST,
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53 "Parameters 'indexMetaId' and 'type' are null. "
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54 + "At least one of them must be not null.");
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55 return;
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56 }
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57
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58 JSONArray rsArray = new JSONArray();
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59 for (Contextualization ctx : rs) {
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60 rsArray.put(JSONUtils.ctx2JSON(ctx));
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61 }
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63 json.put("rs", rsArray);
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64 json.put(RUNTIME, (System.currentTimeMillis() - startExecution));
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65
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66 PrintWriter out = response.getWriter();
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67 out.print(json.toString());
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68
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69 }
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71 }