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comparison flys-client/src/main/java/de/intevation/flys/client/server/ChartOutputServiceImpl.java @ 549:e74bf6bfeeb6

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Use the same code to create the attribute document for the chart creation in ChartOutputService and ChartInfoService. flys-client/trunk@2060 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author Ingo Weinzierl <ingo.weinzierl@intevation.de>
date Tue, 07 Jun 2011 10:03:19 +0000
parents 7c57149e8715
children 51d4b51a51ed
comparison
equal deleted inserted replaced
548:aff225e07720 549:e74bf6bfeeb6
1 package de.intevation.flys.client.server; 1 package de.intevation.flys.client.server;
2 2
3 import java.io.OutputStream; 3 import java.io.OutputStream;
4 import java.io.IOException; 4 import java.io.IOException;
5 import java.util.HashMap;
6 import java.util.Map;
5 7
6 import org.w3c.dom.Document; 8 import org.w3c.dom.Document;
7 import org.w3c.dom.Element;
8 9
9 import javax.servlet.http.HttpServlet; 10 import javax.servlet.http.HttpServlet;
10 import javax.servlet.http.HttpServletRequest; 11 import javax.servlet.http.HttpServletRequest;
11 import javax.servlet.http.HttpServletResponse; 12 import javax.servlet.http.HttpServletResponse;
12 13
13 import de.intevation.artifacts.common.ArtifactNamespaceContext;
14 import de.intevation.artifacts.common.utils.ClientProtocolUtils; 14 import de.intevation.artifacts.common.utils.ClientProtocolUtils;
15 import de.intevation.artifacts.common.utils.XMLUtils;
16 import de.intevation.artifacts.common.utils.XMLUtils.ElementCreator;
17 15
18 import de.intevation.artifacts.httpclient.http.HttpClient; 16 import de.intevation.artifacts.httpclient.http.HttpClient;
19 import de.intevation.artifacts.httpclient.http.HttpClientImpl; 17 import de.intevation.artifacts.httpclient.http.HttpClientImpl;
20 18
21 19
27 * @author <a href="mailto:ingo.weinzierl@intevation.de">Ingo Weinzierl</a> 25 * @author <a href="mailto:ingo.weinzierl@intevation.de">Ingo Weinzierl</a>
28 */ 26 */
29 public class ChartOutputServiceImpl 27 public class ChartOutputServiceImpl
30 extends HttpServlet 28 extends HttpServlet
31 { 29 {
32 /** The default chart width if no value is specified in the request.*/
33 public static final int DEFAULT_CHART_WIDTH = 600;
34
35 /** The default chart height if no value is specified in the request.*/
36 public static final int DEFAULT_CHART_HEIGHT = 400;
37
38
39 public void doGet(HttpServletRequest req, HttpServletResponse resp) { 30 public void doGet(HttpServletRequest req, HttpServletResponse resp) {
40 System.out.println("ChartOutputServiceImpl.doGet"); 31 System.out.println("ChartOutputServiceImpl.doGet");
41 32
42 try { 33 try {
43 OutputStream out = resp.getOutputStream(); 34 OutputStream out = resp.getOutputStream();
46 String uuid = req.getParameter("uuid"); 37 String uuid = req.getParameter("uuid");
47 String type = req.getParameter("type"); 38 String type = req.getParameter("type");
48 String locale = req.getParameter("locale"); 39 String locale = req.getParameter("locale");
49 40
50 Document request = ClientProtocolUtils.newOutCollectionDocument( 41 Document request = ClientProtocolUtils.newOutCollectionDocument(
51 uuid, type, type, getChartAttributes(req)); 42 uuid, type, type,
43 ChartServiceHelper.getChartAttributes(prepareChartAttributes(req)));
52 44
53 HttpClient client = new HttpClientImpl(serverUrl, locale); 45 HttpClient client = new HttpClientImpl(serverUrl, locale);
54 client.collectionOut(request, uuid, "chart", out); 46 client.collectionOut(request, uuid, "chart", out);
55 47
56 out.close(); 48 out.close();
57 out.flush(); 49 out.flush();
58 } 50 }
59 catch (IOException ioe) { 51 catch (IOException ioe) {
52 ioe.printStackTrace();
60 System.err.println(ioe.getMessage()); 53 System.err.println(ioe.getMessage());
61 } 54 }
62 catch (Exception e) { 55 catch (Exception e) {
56 e.printStackTrace();
63 System.err.println(e.getMessage()); 57 System.err.println(e.getMessage());
64 } 58 }
65 } 59 }
66 60
67 61
68 /** 62 protected Map<String, String> prepareChartAttributes(HttpServletRequest req) {
69 * This method returns a document which might contain parameters to adjust 63 Map<String, String> attr = new HashMap<String, String>();
70 * chart settings. The document is created using the information that are
71 * contained in the request object.
72 *
73 * @param req The request document.
74 *
75 * @return a document to adjust chart settings.
76 */
77 protected Document getChartAttributes(HttpServletRequest req) {
78 Document doc = XMLUtils.newDocument();
79 64
80 ElementCreator ec = new ElementCreator( 65 Map params = req.getParameterMap();
81 doc,
82 ArtifactNamespaceContext.NAMESPACE_URI,
83 ArtifactNamespaceContext.NAMESPACE_PREFIX);
84 66
85 Element attributes = ec.create("attributes"); 67 attr.put("width", req.getParameter("width"));
68 attr.put("height", req.getParameter("height"));
69 attr.put("minx", req.getParameter("minx"));
70 attr.put("maxx", req.getParameter("maxx"));
71 attr.put("miny", req.getParameter("miny"));
72 attr.put("maxy", req.getParameter("maxy"));
86 73
87 appendChartSize(req, attributes, ec); 74 return attr;
88 appendXRange(req, attributes, ec);
89 appendYRange(req, attributes, ec);
90
91 doc.appendChild(attributes);
92
93 return doc;
94 }
95
96
97 /**
98 * This method extracts the size (width/height) of a chart from request
99 * object and append those values - if they exist - to the attribute
100 * document used to adjust chart settings.
101 *
102 * @param req The request object that might contain the chart size.
103 * @param attributes The attributes element used to adjust chart settings.
104 * @param ec The ElementCreator that might be used to create new Elements.
105 */
106 protected void appendChartSize(
107 HttpServletRequest req,
108 Element attributes,
109 ElementCreator ec)
110 {
111 Element size = ec.create("size");
112
113 String width = req.getParameter("width");
114 String height = req.getParameter("height");
115
116 if (width == null || height == null) {
117 width = Integer.toString(DEFAULT_CHART_WIDTH);
118 height = Integer.toString(DEFAULT_CHART_HEIGHT);
119 }
120
121 ec.addAttr(size, "width", width, true);
122 ec.addAttr(size, "height", height, true);
123
124 attributes.appendChild(size);
125 }
126
127
128 /**
129 * This method extracts the x range for the chart from request object and
130 * appends those range - if it exists - to the attribute document used to
131 * adjust the chart settings.
132 *
133 * @param req The request object that might contain the chart size.
134 * @param doc The attribute document used to adjust chart settings.
135 * @param ec The ElementCreator that might be used to create new Elements.
136 */
137 protected void appendXRange(
138 HttpServletRequest req,
139 Element attributes,
140 ElementCreator ec)
141 {
142 Element range = ec.create("xrange");
143
144 String from = req.getParameter("minx");
145 String to = req.getParameter("maxx");
146
147 if (from != null && to != null) {
148 ec.addAttr(range, "from", from, true);
149 ec.addAttr(range, "to", to, true);
150
151 attributes.appendChild(range);
152 }
153 }
154
155
156 /**
157 * This method extracts the x range for the chart from request object and
158 * appends those range - if it exists - to the attribute document used to
159 * adjust the chart settings.
160 *
161 * @param req The request object that might contain the chart size.
162 * @param doc The attribute document used to adjust chart settings.
163 * @param ec The ElementCreator that might be used to create new Elements.
164 */
165 protected void appendYRange(
166 HttpServletRequest req,
167 Element attributes,
168 ElementCreator ec)
169 {
170 Element range = ec.create("yrange");
171
172 String from = req.getParameter("miny");
173 String to = req.getParameter("maxy");
174
175 if (from != null && to != null) {
176 ec.addAttr(range, "from", from, true);
177 ec.addAttr(range, "to", to, true);
178
179 attributes.appendChild(range);
180 }
181 } 75 }
182 } 76 }
183 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 : 77 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :
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