Mercurial > dive4elements > river

annotate flys-client/src/main/java/de/intevation/flys/client/server/BedloadKMChartServiceImpl.java @ 4697:52068f1231da

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Fixed NPE in empty style editor window.
author Raimund Renkert <rrenkert@intevation.de>
date Mon, 17 Dec 2012 17:54:26 +0100
parents f84ed73311f2
children
rev   line source
3705
f84ed73311f2 Added UI for minfo bed quality calculation and added new services for overview
Raimund Renkert <raimund.renkert@intevation.de>
parents:
diff changeset
1 package de.intevation.flys.client.server;
f84ed73311f2 Added UI for minfo bed quality calculation and added new services for overview
Raimund Renkert <raimund.renkert@intevation.de>
parents:
diff changeset
2
f84ed73311f2 Added UI for minfo bed quality calculation and added new services for overview
Raimund Renkert <raimund.renkert@intevation.de>
parents:
diff changeset
3 import java.io.IOException;
f84ed73311f2 Added UI for minfo bed quality calculation and added new services for overview
Raimund Renkert <raimund.renkert@intevation.de>
parents:
diff changeset
4 import java.io.InputStream;
f84ed73311f2 Added UI for minfo bed quality calculation and added new services for overview
Raimund Renkert <raimund.renkert@intevation.de>
parents:
diff changeset
5 import java.io.OutputStream;
f84ed73311f2 Added UI for minfo bed quality calculation and added new services for overview
Raimund Renkert <raimund.renkert@intevation.de>
parents:
diff changeset
6
f84ed73311f2 Added UI for minfo bed quality calculation and added new services for overview
Raimund Renkert <raimund.renkert@intevation.de>
parents:
diff changeset
7 import javax.servlet.http.HttpServlet;
f84ed73311f2 Added UI for minfo bed quality calculation and added new services for overview
Raimund Renkert <raimund.renkert@intevation.de>
parents:
diff changeset
8 import javax.servlet.http.HttpServletRequest;
f84ed73311f2 Added UI for minfo bed quality calculation and added new services for overview
Raimund Renkert <raimund.renkert@intevation.de>
parents:
diff changeset
9 import javax.servlet.http.HttpServletResponse;
f84ed73311f2 Added UI for minfo bed quality calculation and added new services for overview
Raimund Renkert <raimund.renkert@intevation.de>
parents:
diff changeset
10
f84ed73311f2 Added UI for minfo bed quality calculation and added new services for overview
Raimund Renkert <raimund.renkert@intevation.de>
parents:
diff changeset
11 import org.apache.log4j.Logger;
f84ed73311f2 Added UI for minfo bed quality calculation and added new services for overview
Raimund Renkert <raimund.renkert@intevation.de>
parents:
diff changeset
12 import org.w3c.dom.Document;
f84ed73311f2 Added UI for minfo bed quality calculation and added new services for overview
Raimund Renkert <raimund.renkert@intevation.de>
parents:
diff changeset
13 import org.w3c.dom.Element;
f84ed73311f2 Added UI for minfo bed quality calculation and added new services for overview
Raimund Renkert <raimund.renkert@intevation.de>
parents:
diff changeset
14 import org.w3c.dom.NodeList;
f84ed73311f2 Added UI for minfo bed quality calculation and added new services for overview
Raimund Renkert <raimund.renkert@intevation.de>
parents:
diff changeset
15
f84ed73311f2 Added UI for minfo bed quality calculation and added new services for overview
Raimund Renkert <raimund.renkert@intevation.de>
parents:
diff changeset
16 import de.intevation.artifacts.common.utils.XMLUtils;
f84ed73311f2 Added UI for minfo bed quality calculation and added new services for overview
Raimund Renkert <raimund.renkert@intevation.de>
parents:
diff changeset
17 import de.intevation.artifacts.httpclient.exceptions.ConnectionException;
f84ed73311f2 Added UI for minfo bed quality calculation and added new services for overview
Raimund Renkert <raimund.renkert@intevation.de>
parents:
diff changeset
18 import de.intevation.artifacts.httpclient.http.HttpClient;
f84ed73311f2 Added UI for minfo bed quality calculation and added new services for overview
Raimund Renkert <raimund.renkert@intevation.de>
parents:
diff changeset
19 import de.intevation.artifacts.httpclient.http.HttpClientImpl;
f84ed73311f2 Added UI for minfo bed quality calculation and added new services for overview
Raimund Renkert <raimund.renkert@intevation.de>
parents:
diff changeset
20 import de.intevation.artifacts.httpclient.http.response.StreamResponseHandler;
f84ed73311f2 Added UI for minfo bed quality calculation and added new services for overview
Raimund Renkert <raimund.renkert@intevation.de>
parents:
diff changeset
21
f84ed73311f2 Added UI for minfo bed quality calculation and added new services for overview
Raimund Renkert <raimund.renkert@intevation.de>
parents:
diff changeset
22 public class BedloadKMChartServiceImpl extends HttpServlet {
f84ed73311f2 Added UI for minfo bed quality calculation and added new services for overview
Raimund Renkert <raimund.renkert@intevation.de>
parents:
diff changeset
23 private static final Logger log =
f84ed73311f2 Added UI for minfo bed quality calculation and added new services for overview
Raimund Renkert <raimund.renkert@intevation.de>
parents:
diff changeset
24 Logger.getLogger(FixingsKMChartServiceImpl.class);
f84ed73311f2 Added UI for minfo bed quality calculation and added new services for overview
Raimund Renkert <raimund.renkert@intevation.de>
parents:
diff changeset
25
f84ed73311f2 Added UI for minfo bed quality calculation and added new services for overview
Raimund Renkert <raimund.renkert@intevation.de>
parents:
diff changeset
26 public static final String SERVICE_NAME = "bedload-km-chart";
f84ed73311f2 Added UI for minfo bed quality calculation and added new services for overview
Raimund Renkert <raimund.renkert@intevation.de>
parents:
diff changeset
27
f84ed73311f2 Added UI for minfo bed quality calculation and added new services for overview
Raimund Renkert <raimund.renkert@intevation.de>
parents:
diff changeset
28 public BedloadKMChartServiceImpl() {
f84ed73311f2 Added UI for minfo bed quality calculation and added new services for overview
Raimund Renkert <raimund.renkert@intevation.de>
parents:
diff changeset
29 }
f84ed73311f2 Added UI for minfo bed quality calculation and added new services for overview
Raimund Renkert <raimund.renkert@intevation.de>
parents:
diff changeset
30
f84ed73311f2 Added UI for minfo bed quality calculation and added new services for overview
Raimund Renkert <raimund.renkert@intevation.de>
parents:
diff changeset
31 public void doGet(HttpServletRequest req, HttpServletResponse resp) {
f84ed73311f2 Added UI for minfo bed quality calculation and added new services for overview
Raimund Renkert <raimund.renkert@intevation.de>
parents:
diff changeset
32
f84ed73311f2 Added UI for minfo bed quality calculation and added new services for overview
Raimund Renkert <raimund.renkert@intevation.de>
parents:
diff changeset
33 log.info("BedloadKMChartServiceImpl.doGet");
f84ed73311f2 Added UI for minfo bed quality calculation and added new services for overview
Raimund Renkert <raimund.renkert@intevation.de>
parents:
diff changeset
34
f84ed73311f2 Added UI for minfo bed quality calculation and added new services for overview
Raimund Renkert <raimund.renkert@intevation.de>
parents:
diff changeset
35 String url = getServletContext().getInitParameter("server-url");
f84ed73311f2 Added UI for minfo bed quality calculation and added new services for overview
Raimund Renkert <raimund.renkert@intevation.de>
parents:
diff changeset
36 String locale = req.getParameter("locale");
f84ed73311f2 Added UI for minfo bed quality calculation and added new services for overview
Raimund Renkert <raimund.renkert@intevation.de>
parents:
diff changeset
37 String filter = req.getParameter("filter");
f84ed73311f2 Added UI for minfo bed quality calculation and added new services for overview
Raimund Renkert <raimund.renkert@intevation.de>
parents:
diff changeset
38
f84ed73311f2 Added UI for minfo bed quality calculation and added new services for overview
Raimund Renkert <raimund.renkert@intevation.de>
parents:
diff changeset
39 if (filter == null || filter.length() == 0) {
f84ed73311f2 Added UI for minfo bed quality calculation and added new services for overview
Raimund Renkert <raimund.renkert@intevation.de>
parents:
diff changeset
40 log.warn("Missing 'filter' parameter.");
f84ed73311f2 Added UI for minfo bed quality calculation and added new services for overview
Raimund Renkert <raimund.renkert@intevation.de>
parents:
diff changeset
41 return;
f84ed73311f2 Added UI for minfo bed quality calculation and added new services for overview
Raimund Renkert <raimund.renkert@intevation.de>
parents:
diff changeset
42 }
f84ed73311f2 Added UI for minfo bed quality calculation and added new services for overview
Raimund Renkert <raimund.renkert@intevation.de>
parents:
diff changeset
43
f84ed73311f2 Added UI for minfo bed quality calculation and added new services for overview
Raimund Renkert <raimund.renkert@intevation.de>
parents:
diff changeset
44 if (locale == null || locale.length() == 0) {
f84ed73311f2 Added UI for minfo bed quality calculation and added new services for overview
Raimund Renkert <raimund.renkert@intevation.de>
parents:
diff changeset
45 locale = "de";
f84ed73311f2 Added UI for minfo bed quality calculation and added new services for overview
Raimund Renkert <raimund.renkert@intevation.de>
parents:
diff changeset
46 }
f84ed73311f2 Added UI for minfo bed quality calculation and added new services for overview
Raimund Renkert <raimund.renkert@intevation.de>
parents:
diff changeset
47
f84ed73311f2 Added UI for minfo bed quality calculation and added new services for overview
Raimund Renkert <raimund.renkert@intevation.de>
parents:
diff changeset
48 Document filterDoc = XMLUtils.jsonToXML(filter);
f84ed73311f2 Added UI for minfo bed quality calculation and added new services for overview
Raimund Renkert <raimund.renkert@intevation.de>
parents:
diff changeset
49
f84ed73311f2 Added UI for minfo bed quality calculation and added new services for overview
Raimund Renkert <raimund.renkert@intevation.de>
parents:
diff changeset
50 if (filterDoc == null) {
f84ed73311f2 Added UI for minfo bed quality calculation and added new services for overview
Raimund Renkert <raimund.renkert@intevation.de>
parents:
diff changeset
51 log.warn("Creating filter document failed.");
f84ed73311f2 Added UI for minfo bed quality calculation and added new services for overview
Raimund Renkert <raimund.renkert@intevation.de>
parents:
diff changeset
52 return;
f84ed73311f2 Added UI for minfo bed quality calculation and added new services for overview
Raimund Renkert <raimund.renkert@intevation.de>
parents:
diff changeset
53 }
f84ed73311f2 Added UI for minfo bed quality calculation and added new services for overview
Raimund Renkert <raimund.renkert@intevation.de>
parents:
diff changeset
54
f84ed73311f2 Added UI for minfo bed quality calculation and added new services for overview
Raimund Renkert <raimund.renkert@intevation.de>
parents:
diff changeset
55 InputStream in;
f84ed73311f2 Added UI for minfo bed quality calculation and added new services for overview
Raimund Renkert <raimund.renkert@intevation.de>
parents:
diff changeset
56
f84ed73311f2 Added UI for minfo bed quality calculation and added new services for overview
Raimund Renkert <raimund.renkert@intevation.de>
parents:
diff changeset
57 try {
f84ed73311f2 Added UI for minfo bed quality calculation and added new services for overview
Raimund Renkert <raimund.renkert@intevation.de>
parents:
diff changeset
58 HttpClient client = new HttpClientImpl(url, locale);
f84ed73311f2 Added UI for minfo bed quality calculation and added new services for overview
Raimund Renkert <raimund.renkert@intevation.de>
parents:
diff changeset
59 in = (InputStream)client.callService(
f84ed73311f2 Added UI for minfo bed quality calculation and added new services for overview
Raimund Renkert <raimund.renkert@intevation.de>
parents:
diff changeset
60 url, // XXX: Why? The URL is passed by construction already.
f84ed73311f2 Added UI for minfo bed quality calculation and added new services for overview
Raimund Renkert <raimund.renkert@intevation.de>
parents:
diff changeset
61 SERVICE_NAME,
f84ed73311f2 Added UI for minfo bed quality calculation and added new services for overview
Raimund Renkert <raimund.renkert@intevation.de>
parents:
diff changeset
62 filterDoc,
f84ed73311f2 Added UI for minfo bed quality calculation and added new services for overview
Raimund Renkert <raimund.renkert@intevation.de>
parents:
diff changeset
63 new StreamResponseHandler());
f84ed73311f2 Added UI for minfo bed quality calculation and added new services for overview
Raimund Renkert <raimund.renkert@intevation.de>
parents:
diff changeset
64 }
f84ed73311f2 Added UI for minfo bed quality calculation and added new services for overview
Raimund Renkert <raimund.renkert@intevation.de>
parents:
diff changeset
65 catch (ConnectionException ce) {
f84ed73311f2 Added UI for minfo bed quality calculation and added new services for overview
Raimund Renkert <raimund.renkert@intevation.de>
parents:
diff changeset
66 log.error(ce);
f84ed73311f2 Added UI for minfo bed quality calculation and added new services for overview
Raimund Renkert <raimund.renkert@intevation.de>
parents:
diff changeset
67 return;
f84ed73311f2 Added UI for minfo bed quality calculation and added new services for overview
Raimund Renkert <raimund.renkert@intevation.de>
parents:
diff changeset
68 }
f84ed73311f2 Added UI for minfo bed quality calculation and added new services for overview
Raimund Renkert <raimund.renkert@intevation.de>
parents:
diff changeset
69
f84ed73311f2 Added UI for minfo bed quality calculation and added new services for overview
Raimund Renkert <raimund.renkert@intevation.de>
parents:
diff changeset
70 resp.setHeader("Content-Type", guessMIMEType(filterDoc));
f84ed73311f2 Added UI for minfo bed quality calculation and added new services for overview
Raimund Renkert <raimund.renkert@intevation.de>
parents:
diff changeset
71
f84ed73311f2 Added UI for minfo bed quality calculation and added new services for overview
Raimund Renkert <raimund.renkert@intevation.de>
parents:
diff changeset
72 try {
f84ed73311f2 Added UI for minfo bed quality calculation and added new services for overview
Raimund Renkert <raimund.renkert@intevation.de>
parents:
diff changeset
73 OutputStream out = resp.getOutputStream();
f84ed73311f2 Added UI for minfo bed quality calculation and added new services for overview
Raimund Renkert <raimund.renkert@intevation.de>
parents:
diff changeset
74
f84ed73311f2 Added UI for minfo bed quality calculation and added new services for overview
Raimund Renkert <raimund.renkert@intevation.de>
parents:
diff changeset
75 byte [] buf = new byte[4096];
f84ed73311f2 Added UI for minfo bed quality calculation and added new services for overview
Raimund Renkert <raimund.renkert@intevation.de>
parents:
diff changeset
76 int i = -1;
f84ed73311f2 Added UI for minfo bed quality calculation and added new services for overview
Raimund Renkert <raimund.renkert@intevation.de>
parents:
diff changeset
77 while ((i = in.read(buf)) >= 0) {
f84ed73311f2 Added UI for minfo bed quality calculation and added new services for overview
Raimund Renkert <raimund.renkert@intevation.de>
parents:
diff changeset
78 out.write(buf, 0, i);
f84ed73311f2 Added UI for minfo bed quality calculation and added new services for overview
Raimund Renkert <raimund.renkert@intevation.de>
parents:
diff changeset
79 }
f84ed73311f2 Added UI for minfo bed quality calculation and added new services for overview
Raimund Renkert <raimund.renkert@intevation.de>
parents:
diff changeset
80 out.flush();
f84ed73311f2 Added UI for minfo bed quality calculation and added new services for overview
Raimund Renkert <raimund.renkert@intevation.de>
parents:
diff changeset
81 }
f84ed73311f2 Added UI for minfo bed quality calculation and added new services for overview
Raimund Renkert <raimund.renkert@intevation.de>
parents:
diff changeset
82 catch (IOException ioe) {
f84ed73311f2 Added UI for minfo bed quality calculation and added new services for overview
Raimund Renkert <raimund.renkert@intevation.de>
parents:
diff changeset
83 log.error(ioe);
f84ed73311f2 Added UI for minfo bed quality calculation and added new services for overview
Raimund Renkert <raimund.renkert@intevation.de>
parents:
diff changeset
84 }
f84ed73311f2 Added UI for minfo bed quality calculation and added new services for overview
Raimund Renkert <raimund.renkert@intevation.de>
parents:
diff changeset
85 finally {
f84ed73311f2 Added UI for minfo bed quality calculation and added new services for overview
Raimund Renkert <raimund.renkert@intevation.de>
parents:
diff changeset
86 try { in.close(); }
f84ed73311f2 Added UI for minfo bed quality calculation and added new services for overview
Raimund Renkert <raimund.renkert@intevation.de>
parents:
diff changeset
87 catch (IOException ioe) { /* ignored */ }
f84ed73311f2 Added UI for minfo bed quality calculation and added new services for overview
Raimund Renkert <raimund.renkert@intevation.de>
parents:
diff changeset
88 }
f84ed73311f2 Added UI for minfo bed quality calculation and added new services for overview
Raimund Renkert <raimund.renkert@intevation.de>
parents:
diff changeset
89 }
f84ed73311f2 Added UI for minfo bed quality calculation and added new services for overview
Raimund Renkert <raimund.renkert@intevation.de>
parents:
diff changeset
90
f84ed73311f2 Added UI for minfo bed quality calculation and added new services for overview
Raimund Renkert <raimund.renkert@intevation.de>
parents:
diff changeset
91 protected static String guessMIMEType(Document document) {
f84ed73311f2 Added UI for minfo bed quality calculation and added new services for overview
Raimund Renkert <raimund.renkert@intevation.de>
parents:
diff changeset
92
f84ed73311f2 Added UI for minfo bed quality calculation and added new services for overview
Raimund Renkert <raimund.renkert@intevation.de>
parents:
diff changeset
93 NodeList formats = document.getElementsByTagName("format");
f84ed73311f2 Added UI for minfo bed quality calculation and added new services for overview
Raimund Renkert <raimund.renkert@intevation.de>
parents:
diff changeset
94
f84ed73311f2 Added UI for minfo bed quality calculation and added new services for overview
Raimund Renkert <raimund.renkert@intevation.de>
parents:
diff changeset
95 String format = "png";
f84ed73311f2 Added UI for minfo bed quality calculation and added new services for overview
Raimund Renkert <raimund.renkert@intevation.de>
parents:
diff changeset
96
f84ed73311f2 Added UI for minfo bed quality calculation and added new services for overview
Raimund Renkert <raimund.renkert@intevation.de>
parents:
diff changeset
97 if (formats.getLength() > 0) {
f84ed73311f2 Added UI for minfo bed quality calculation and added new services for overview
Raimund Renkert <raimund.renkert@intevation.de>
parents:
diff changeset
98 String type = ((Element)formats.item(0)).getAttribute("type");
f84ed73311f2 Added UI for minfo bed quality calculation and added new services for overview
Raimund Renkert <raimund.renkert@intevation.de>
parents:
diff changeset
99 if (type.length() > 0) {
f84ed73311f2 Added UI for minfo bed quality calculation and added new services for overview
Raimund Renkert <raimund.renkert@intevation.de>
parents:
diff changeset
100 format = type;
f84ed73311f2 Added UI for minfo bed quality calculation and added new services for overview
Raimund Renkert <raimund.renkert@intevation.de>
parents:
diff changeset
101 }
f84ed73311f2 Added UI for minfo bed quality calculation and added new services for overview
Raimund Renkert <raimund.renkert@intevation.de>
parents:
diff changeset
102 }
f84ed73311f2 Added UI for minfo bed quality calculation and added new services for overview
Raimund Renkert <raimund.renkert@intevation.de>
parents:
diff changeset
103
f84ed73311f2 Added UI for minfo bed quality calculation and added new services for overview
Raimund Renkert <raimund.renkert@intevation.de>
parents:
diff changeset
104 return "image/" + format;
f84ed73311f2 Added UI for minfo bed quality calculation and added new services for overview
Raimund Renkert <raimund.renkert@intevation.de>
parents:
diff changeset
105 }
f84ed73311f2 Added UI for minfo bed quality calculation and added new services for overview
Raimund Renkert <raimund.renkert@intevation.de>
parents:
diff changeset
106 }
http://dive4elements.wald.intevation.org