Mercurial > hg > IndexMetaContextualizer

comparison 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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5:7d231e4e86e5 7:bc57f2660b0f
1 package de.mpiwg.indexmeta.web.servlet.methods;
2
3 import java.io.IOException;
4 import java.io.PrintWriter;
5 import java.util.ArrayList;
6 import java.util.List;
7
8 import javax.servlet.ServletException;
9 import javax.servlet.http.HttpServletRequest;
10 import javax.servlet.http.HttpServletResponse;
11
12 import org.apache.commons.lang.StringUtils;
13 import org.json.JSONArray;
14 import org.json.JSONException;
15 import org.json.JSONObject;
16
17 import de.mpiwg.indexmeta.bo.Contextualization;
18 import de.mpiwg.indexmeta.services.DataProvider;
19 import de.mpiwg.indexmeta.web.utils.JSONUtils;
20
21 public class JSONGetCtxFromDB extends AbstractServletMethod {
22
23 public static void execute(DataProvider dp,
24 HttpServletRequest request, HttpServletResponse response)
25 throws ServletException, IOException, JSONException {
26
27 JSONObject json = new JSONObject();
28
29 long startExecution = System.currentTimeMillis();
30
31 String indexMetaId = getString(request, p_indexMetaId);
32 String type = getString(request, p_type);
33 String elementId = getString(request, p_elementId);
34 String remoteId = getString(request, p_remoteId);
35
36 List<Contextualization> rs = null;
37
38 if (StringUtils.isNotEmpty(indexMetaId)) {
39
40 rs = dp.getCtxByIndexMetaId(indexMetaId);
41 rs = filterByType(rs, type);
42 rs = filterByElementId(rs, elementId);
43 rs = filterByRemoteId(rs, remoteId);
44
45 } else if (StringUtils.isNotEmpty(type)) {
46
47 rs = dp.getCtxByType(type);
48 rs = filterByElementId(rs, elementId);
49 rs = filterByRemoteId(rs, remoteId);
50
51 } else {
52 response.sendError(HttpServletResponse.SC_BAD_REQUEST,
53 "Parameters 'indexMetaId' and 'type' are null. "
54 + "At least one of them must be not null.");
55 return;
56 }
57
58 JSONArray rsArray = new JSONArray();
59 for (Contextualization ctx : rs) {
60 rsArray.put(JSONUtils.ctx2JSON(ctx));
61 }
62
63 json.put("rs", rsArray);
64 json.put(RUNTIME, (System.currentTimeMillis() - startExecution));
65
66 PrintWriter out = response.getWriter();
67 out.print(json.toString());
68
69 }
70
71 }