Mercurial > dive4elements > river
comparison flys-artifacts/src/main/java/de/intevation/flys/artifacts/services/DischargeTablesOverview.java @ 4213:0674d89210f5
Added a new service to query a diagram with discharge tables.
This service takes a gauge (required) and a timerange (optional) as input parameters.
author | Ingo Weinzierl <ingo.weinzierl@intevation.de> |
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date | Tue, 23 Oct 2012 07:39:09 +0200 |
parents | |
children | 08b6458909a9 |
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4212:fbaba8e1a3a2 | 4213:0674d89210f5 |
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1 package de.intevation.flys.artifacts.services; | |
2 | |
3 import java.awt.Color; | |
4 import java.text.DateFormat; | |
5 import java.text.ParseException; | |
6 import java.util.ArrayList; | |
7 import java.util.Collections; | |
8 import java.util.Date; | |
9 import java.util.List; | |
10 import java.util.Locale; | |
11 | |
12 import org.apache.log4j.Logger; | |
13 import org.hibernate.Session; | |
14 import org.jfree.chart.ChartFactory; | |
15 import org.jfree.chart.JFreeChart; | |
16 import org.jfree.chart.plot.PlotOrientation; | |
17 import org.jfree.chart.plot.XYPlot; | |
18 import org.jfree.data.xy.XYSeries; | |
19 import org.jfree.data.xy.XYSeriesCollection; | |
20 import org.w3c.dom.Document; | |
21 import org.w3c.dom.Element; | |
22 import org.w3c.dom.NodeList; | |
23 | |
24 import de.intevation.artifacts.CallMeta; | |
25 import de.intevation.artifacts.GlobalContext; | |
26 import de.intevation.flys.artifacts.model.DischargeTables; | |
27 import de.intevation.flys.artifacts.model.GaugesFactory; | |
28 import de.intevation.flys.artifacts.resources.Resources; | |
29 import de.intevation.flys.backend.SessionHolder; | |
30 import de.intevation.flys.model.DischargeTable; | |
31 import de.intevation.flys.model.Gauge; | |
32 import de.intevation.flys.model.TimeInterval; | |
33 | |
34 | |
35 public class DischargeTablesOverview extends AbstractChartService { | |
36 | |
37 private static final Logger log = Logger | |
38 .getLogger(DischargeTablesOverview.class); | |
39 | |
40 private static final long serialVersionUID = 1L; | |
41 | |
42 public static final String I18N_CHART_TITLE = "gauge.discharge.service.chart.title"; | |
43 public static final String DEFAULT_CHART_TITLE = "Pegel: XXX"; | |
44 | |
45 public static final String I18N_CHART_X_AXIS_TITLE = "gauge.discharge.service.chart.x.title"; | |
46 public static final String DEFAULT_X_AXIS_TITLE = "Q [m^3/s]"; | |
47 | |
48 public static final String I18N_CHART_Y_AXIS_TITLE = "gauge.discharge.service.chart.y.title"; | |
49 public static final String DEFAULT_Y_AXIS_TITLE = "W [cm]"; | |
50 | |
51 public static final String I18N_CHART_SERIES_TITLE = "gauge.discharge.service.chart.series.title"; | |
52 public static final String DEFAULT_CHART_SERIES_TITLE = "Abflusskurve"; | |
53 | |
54 public static final String I18N_CHART_SERIES_TITLE_MASTER = "gauge.discharge.service.chart.series.title.master"; | |
55 public static final String DEFAULT_CHART_SERIES_TITLE_MASTER = "Aktuelle Abflusskurve"; | |
56 | |
57 public static final DateFormat DATE_FORMAT = DateFormat.getDateInstance( | |
58 DateFormat.SHORT, Locale.GERMANY); | |
59 | |
60 private Session session; | |
61 | |
62 @Override | |
63 protected void init() { | |
64 session = SessionHolder.acquire(); | |
65 } | |
66 | |
67 @Override | |
68 protected void finish() { | |
69 if (session != null) { | |
70 session.close(); | |
71 SessionHolder.release(); | |
72 } | |
73 } | |
74 | |
75 protected JFreeChart createChart(Document data, | |
76 GlobalContext globalContext, CallMeta callMeta) { | |
77 | |
78 Gauge gauge = extractGauge(data); | |
79 | |
80 if (gauge == null) { | |
81 log.warn("Could not determine Gauge from request!"); | |
82 return null; | |
83 } | |
84 | |
85 log.info("create discharge chart for gauge '" + gauge.getName() + "'"); | |
86 TimeInterval timerange = extractTimeInterval(data); | |
87 | |
88 List<DischargeTable> dts = getDischargeTables(gauge, timerange); | |
89 XYSeriesCollection dataset = new XYSeriesCollection(); | |
90 | |
91 for (DischargeTable dt : dts) { | |
92 try { | |
93 XYSeries series = createSeries(callMeta, dt); | |
94 if (series != null) { | |
95 dataset.addSeries(series); | |
96 } | |
97 } | |
98 catch (IllegalArgumentException iae) { | |
99 log.warn("unable to create discharge curve: " | |
100 + iae.getMessage()); | |
101 } | |
102 } | |
103 | |
104 String title = Resources.format(callMeta, I18N_CHART_TITLE, | |
105 DEFAULT_CHART_TITLE, gauge.getName()); | |
106 | |
107 String xAxis = Resources.getMsg(callMeta, I18N_CHART_X_AXIS_TITLE, | |
108 DEFAULT_X_AXIS_TITLE); | |
109 | |
110 String yAxis = Resources.format(callMeta, I18N_CHART_Y_AXIS_TITLE, | |
111 DEFAULT_Y_AXIS_TITLE); | |
112 | |
113 JFreeChart chart = ChartFactory.createXYLineChart(title, xAxis, yAxis, | |
114 null, PlotOrientation.VERTICAL, true, true, false); | |
115 | |
116 chart.setBackgroundPaint(Color.white); | |
117 | |
118 XYPlot plot = (XYPlot) chart.getPlot(); | |
119 plot.setDataset(0, dataset); | |
120 plot.setBackgroundPaint(Color.white); | |
121 plot.setDomainGridlinePaint(Color.gray); | |
122 plot.setRangeGridlinePaint(Color.gray); | |
123 plot.setDomainGridlinesVisible(true); | |
124 plot.setRangeGridlinesVisible(true); | |
125 | |
126 return chart; | |
127 } | |
128 | |
129 protected XYSeries createSeries(CallMeta callMeta, DischargeTable dt) | |
130 throws IllegalArgumentException { | |
131 | |
132 double[][] xy = null; | |
133 | |
134 if (dt.getKind() == DischargeTables.MASTER) { | |
135 xy = DischargeTables.loadDischargeTableValues(dt, | |
136 DischargeTables.MASTER_SCALE); | |
137 } | |
138 else { | |
139 xy = DischargeTables.loadDischargeTableValues(dt, | |
140 DischargeTables.HISTORICAL_SCALE); | |
141 } | |
142 | |
143 XYSeries series = new XYSeries(createSeriesTitle(callMeta, dt), false); | |
144 for (int i = 0, n = xy[0].length; i < n; i++) { | |
145 series.add(xy[0][i], xy[1][i]); | |
146 } | |
147 | |
148 return series; | |
149 } | |
150 | |
151 protected String createSeriesTitle(CallMeta callMeta, DischargeTable dt) | |
152 throws IllegalArgumentException { | |
153 TimeInterval timeInterval = dt.getTimeInterval(); | |
154 Date start = timeInterval.getStartTime(); | |
155 Date end = timeInterval.getStopTime(); | |
156 | |
157 if (start != null && end != null) { | |
158 return Resources.format(callMeta, I18N_CHART_SERIES_TITLE, | |
159 DEFAULT_CHART_SERIES_TITLE, start, end); | |
160 } | |
161 else if (start != null) { | |
162 return Resources.format(callMeta, I18N_CHART_SERIES_TITLE_MASTER, | |
163 DEFAULT_CHART_SERIES_TITLE, start); | |
164 } | |
165 else { | |
166 throw new IllegalArgumentException( | |
167 "Missing start date of DischargeTable " + dt.getId()); | |
168 } | |
169 } | |
170 | |
171 protected Gauge extractGauge(Document data) { | |
172 NodeList gauges = data.getElementsByTagName("gauge"); | |
173 | |
174 if (gauges.getLength() > 0) { | |
175 String name = ((Element) gauges.item(0)).getAttribute("name"); | |
176 if (name != null && name.length() > 0) { | |
177 return GaugesFactory.getGauge(name); | |
178 } | |
179 } | |
180 | |
181 return null; | |
182 } | |
183 | |
184 protected TimeInterval extractTimeInterval(Document data) { | |
185 NodeList timeranges = data.getElementsByTagName("timerange"); | |
186 | |
187 if (timeranges != null && timeranges.getLength() > 0) { | |
188 Element timerange = (Element) timeranges.item(0); | |
189 | |
190 String lower = timerange.getAttribute("lower"); | |
191 String upper = timerange.getAttribute("upper"); | |
192 | |
193 if (lower != null && upper != null) { | |
194 try { | |
195 Date d1 = DATE_FORMAT.parse(lower); | |
196 Date d2 = DATE_FORMAT.parse(upper); | |
197 | |
198 return new TimeInterval(d1, d2); | |
199 } | |
200 catch (ParseException pe) { | |
201 log.warn("Wrong time format: " + pe.getMessage()); | |
202 } | |
203 } | |
204 } | |
205 | |
206 return null; | |
207 } | |
208 | |
209 protected List<DischargeTable> getDischargeTables(Gauge gauge, | |
210 TimeInterval timerange) { | |
211 List<DischargeTable> all = gauge.getDischargeTables(); | |
212 Collections.sort(all); | |
213 | |
214 if (timerange == null) { | |
215 return all; | |
216 } | |
217 | |
218 List<DischargeTable> dts = new ArrayList<DischargeTable>(all.size()); | |
219 long startDate = timerange.getStartTime().getTime(); | |
220 long stopDate = timerange.getStopTime().getTime(); | |
221 | |
222 for (DischargeTable dt : all) { | |
223 TimeInterval tmp = dt.getTimeInterval(); | |
224 Date start = tmp.getStartTime(); | |
225 Date stop = tmp.getStartTime(); | |
226 | |
227 if (start.getTime() > startDate && start.getTime() < stopDate) { | |
228 dts.add(dt); | |
229 continue; | |
230 } | |
231 else if (stop != null && stop.getTime() < stopDate | |
232 && stop.getTime() > startDate) { | |
233 dts.add(dt); | |
234 continue; | |
235 } | |
236 } | |
237 | |
238 return dts; | |
239 } | |
240 } |