Mercurial > dive4elements > river
annotate artifacts/src/main/java/org/dive4elements/river/artifacts/services/DynamicMainValuesTimeRangeDeterminationService.java @ 9588:c57caff9b00b
Punkt 10.6 CSV-Ausgabe Abflusszeitreihenlänge
| author | gernotbelger |
|---|---|
| date | Thu, 10 Jan 2019 11:56:39 +0100 |
| parents | 879c902c4a2d |
| children |
| rev | line source |
|---|---|
| 9404 | 1 /* Copyright (C) 2011, 2012, 2013 by Bundesanstalt für Gewässerkunde |
| 2 * Software engineering by Intevation GmbH | |
| 3 * | |
| 4 * This file is Free Software under the GNU AGPL (>=v3) | |
| 5 * and comes with ABSOLUTELY NO WARRANTY! Check out the | |
| 6 * documentation coming with Dive4Elements River for details. | |
| 7 */ | |
| 8 | |
| 9 package org.dive4elements.river.artifacts.services; | |
| 10 | |
| 11 import java.util.ArrayList; | |
| 12 import java.util.Calendar; | |
| 13 import java.util.Date; | |
| 14 import java.util.List; | |
| 15 | |
| 16 import javax.xml.xpath.XPathConstants; | |
| 17 | |
| 18 import org.dive4elements.artifacts.CallMeta; | |
| 19 import org.dive4elements.artifacts.GlobalContext; | |
| 20 import org.dive4elements.artifacts.common.ArtifactNamespaceContext; | |
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21 import org.dive4elements.artifacts.common.utils.DateUtils; |
| 9404 | 22 import org.dive4elements.artifacts.common.utils.XMLUtils; |
| 23 import org.dive4elements.artifacts.common.utils.XMLUtils.ElementCreator; | |
| 24 import org.dive4elements.river.artifacts.resources.Resources; | |
| 25 import org.dive4elements.river.artifacts.services.AbstractMainValuesService.MainValuesServiceException; | |
| 26 import org.dive4elements.river.model.Gauge; | |
| 27 import org.dive4elements.river.model.River; | |
| 28 import org.dive4elements.river.model.sinfo.DailyDischargeValue; | |
| 29 import org.w3c.dom.Document; | |
| 30 import org.w3c.dom.Element; | |
| 31 import org.w3c.dom.NodeList; | |
| 32 | |
| 33 /** | |
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34 * This service returns the list of gauges with daily discharge time periods and error messages |
| 9404 | 35 */ |
| 36 public class DynamicMainValuesTimeRangeDeterminationService extends D4EService { | |
| 37 | |
| 38 private static final long serialVersionUID = 1L; | |
| 39 | |
| 40 private static final String ROOT_NODE = "dynamic-mainvalues-input"; | |
| 41 | |
| 42 public static final class ServiceException extends Exception { | |
| 43 | |
| 44 private static final long serialVersionUID = 1L; | |
| 45 | |
| 46 public ServiceException(final String message) { | |
| 47 super(message); | |
| 48 } | |
| 49 } | |
| 50 | |
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51 public static class GaugeInfoResult { |
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52 protected final String globalErrorMsg; |
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53 protected final List<GaugeInfo> gaugeInfos; |
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54 private final Date globalStartDate; |
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55 private final Date globalEndDate; |
| 9404 | 56 |
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57 protected GaugeInfoResult(final List<GaugeInfo> gaugeInfos, final String globalErrorMsg, final Date min, final Date max) { |
| 9404 | 58 this.gaugeInfos = gaugeInfos; |
| 59 this.globalErrorMsg = globalErrorMsg; | |
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60 this.globalStartDate = min; |
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61 this.globalEndDate = max; |
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62 } |
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63 |
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64 public int getGlobalEndYear() { |
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65 return getYearFromDate(this.globalEndDate); |
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66 } |
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67 |
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68 public int getGlobalStartYear() { |
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69 return getYearFromDate(this.globalStartDate); |
| 9404 | 70 } |
| 71 | |
| 72 private static class GaugeInfo { | |
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73 protected final String errorMsg; |
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74 protected final Gauge gauge; |
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75 /** |
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76 * New year of the first year for which the gauge has complete discharge data, including november+december of the year |
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77 * before |
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78 */ |
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79 protected final Date startdate; |
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80 protected final Date enddate; |
| 9404 | 81 |
| 82 public GaugeInfo(final String errorMsg, final Gauge gauge, final Date startdate, final Date enddate) { | |
| 83 this.errorMsg = errorMsg; | |
| 84 this.gauge = gauge; | |
| 85 this.startdate = startdate; | |
| 86 this.enddate = enddate; | |
| 87 } | |
| 88 } | |
| 89 } | |
| 90 | |
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91 /** |
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92 * Queries the available daily discharge time periods of a list of gauges from the database and checks the overlapping |
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93 * |
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94 * @throws ServiceException |
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95 */ |
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96 public static GaugeInfoResult getCommonTimeRangeForGauges(final List<Gauge> gauges, final int startYear, final int endYear, final CallMeta meta) { |
| 9404 | 97 |
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98 final Date startTime = getStartDateFromYear(startYear); |
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99 final Date endTime = getEndDateFromYear(endYear); |
| 9404 | 100 // Query the gauge's daily Q values |
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101 String globalErrorMsg = ""; |
| 9404 | 102 final List<GaugeInfoResult.GaugeInfo> gaugeResults = new ArrayList<>(); |
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103 final Date qStartTime = DateUtils.getAbflussYear(startTime)[0]; |
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104 Date min = qStartTime; |
| 9404 | 105 Date max = endTime; |
| 106 | |
| 107 for (final Gauge gauge : gauges) { | |
| 108 | |
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109 final Date[] gaugeDates = DailyDischargeValue.getTimePeriod(gauge, qStartTime, endTime); |
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110 if (gaugeDates[0] == null) { |
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111 final String msg = Resources.getMsg(meta, "bundu.wst_no_data_at_all", "bundu.wst_no_data_at_all", gauge.getName()); |
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112 final GaugeInfoResult.GaugeInfo gi = new GaugeInfoResult.GaugeInfo(msg, gauge, null, null); |
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113 gaugeResults.add(gi); |
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114 if (globalErrorMsg.isEmpty()) |
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115 globalErrorMsg = msg; |
| 9404 | 116 continue; |
| 117 } | |
| 118 | |
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119 final Date gaugeCalcStartDate = DateUtils.getNextAbflussYear(gaugeDates[0])[0]; |
| 9410 | 120 if (gaugeDates[0].getTime() > min.getTime()) |
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121 min = gaugeCalcStartDate; |
| 9404 | 122 |
| 9410 | 123 if (gaugeDates[1].getTime() < max.getTime()) |
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124 max = gaugeDates[1]; |
| 9404 | 125 |
| 126 String errormsg = null; | |
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127 if ((gaugeDates[1].getTime() < endTime.getTime()) || (gaugeDates[0].getTime() > qStartTime.getTime())) |
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128 errormsg = makeDoesNotCoverErrorMsg(DateUtils.getAbflussYearFromDate(gaugeCalcStartDate), DateUtils.getYearFromDate(gaugeDates[1]), meta); |
| 9404 | 129 |
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130 gaugeResults.add(new GaugeInfoResult.GaugeInfo(errormsg, gauge, DateUtils.getNextNewYear(gaugeCalcStartDate), gaugeDates[1])); |
| 9404 | 131 } |
| 132 | |
| 133 // common Range and correct errorMsg | |
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134 min = DateUtils.getNextNewYear(min); |
| 9404 | 135 final List<GaugeInfoResult.GaugeInfo> gaugeResultsSecondTurn = new ArrayList<>(); |
| 136 for (final GaugeInfoResult.GaugeInfo gi : gaugeResults) { | |
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137 gaugeResultsSecondTurn |
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138 .add(new GaugeInfoResult.GaugeInfo(gi.errorMsg, gi.gauge, gi.startdate != null ? min : null, gi.enddate != null ? max : null)); |
| 9404 | 139 } |
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140 if (globalErrorMsg.isEmpty() && (min.getTime() > max.getTime())) |
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141 globalErrorMsg = getMsg(meta, "bundu.wst.gauge_timeranges_disjoint"); |
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142 |
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143 // add "cannot calculate UD" to globalErrorMsg |
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144 // Eine Berechnung der UD ist nicht möglich. |
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145 if (!globalErrorMsg.isEmpty()) |
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146 globalErrorMsg = new StringBuilder().append(globalErrorMsg).append("\n").append(getMsg(meta, "bundu.wst.gauge_no_ud_calc_available")).toString(); |
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147 |
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148 final GaugeInfoResult result = new GaugeInfoResult(gaugeResultsSecondTurn, globalErrorMsg, min, max); |
| 9404 | 149 |
| 150 return result; | |
| 151 } | |
| 152 | |
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153 private static String makeDoesNotCoverErrorMsg(final int startYear, final int endYear, final CallMeta meta) { |
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154 final String msgkey = "bundu.wst.range_does_not_cover"; |
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155 return Resources.getMsg(meta, msgkey, msgkey, startYear, endYear); |
| 9404 | 156 } |
| 157 | |
| 158 @Override | |
| 159 public Document doProcess(final Document data, final GlobalContext context, final CallMeta callMeta) { | |
| 160 try { | |
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161 final River river = AbstractMainValuesService.getRequestedRiver(data, "/art:" + ROOT_NODE + "/art:river/text()"); |
| 9404 | 162 final List<Gauge> gauges = getRequestedGauges(data, river, callMeta); |
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163 final int start = getRequestedStartYear(data, "/art:" + ROOT_NODE + "/art:startYear/text()"); |
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164 final int end = getRequestedEndYear(data, "/art:" + ROOT_NODE + "/art:endYear/text()"); |
| 9404 | 165 |
| 166 final GaugeInfoResult result = getCommonTimeRangeForGauges(gauges, start, end, callMeta); | |
| 167 | |
| 168 return buildDocument(result, context, callMeta); | |
| 169 } | |
| 170 catch (final ServiceException | MainValuesServiceException e) { | |
| 171 e.printStackTrace(); | |
| 172 return AbstractMainValuesService.error(e.getMessage()); | |
| 173 } | |
| 174 } | |
| 175 | |
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176 public static final int getRequestedEndYear(final Document data, final String XPATH_END_YEAR) throws MainValuesServiceException { |
| 9404 | 177 |
| 178 final String endStr = XMLUtils.xpathString(data, XPATH_END_YEAR, ArtifactNamespaceContext.INSTANCE); | |
| 179 | |
| 180 if (endStr == null) | |
| 181 throw new MainValuesServiceException("no end year"); // should not happen | |
| 182 | |
| 183 try { | |
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184 return Integer.parseInt(endStr); |
| 9404 | 185 } |
| 186 catch (final NumberFormatException e) { | |
| 187 e.printStackTrace(); | |
| 188 throw new MainValuesServiceException("invalid end year"); // should not happen | |
| 189 } | |
| 190 } | |
| 191 | |
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192 public static final int getRequestedStartYear(final Document data, final String XPATH_START_YEAR) throws MainValuesServiceException { |
| 9404 | 193 |
| 194 final String startStr = XMLUtils.xpathString(data, XPATH_START_YEAR, ArtifactNamespaceContext.INSTANCE); | |
| 195 | |
| 196 if (startStr == null) | |
| 197 throw new MainValuesServiceException("no start year");// should not happen | |
| 198 | |
| 199 try { | |
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200 return Integer.parseInt(startStr); |
| 9404 | 201 } |
| 202 catch (final NumberFormatException e) { | |
| 203 e.printStackTrace(); | |
| 204 throw new MainValuesServiceException("invalid start year"); // should not happen | |
| 205 } | |
| 206 } | |
| 207 | |
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208 private static Integer getYearFromDate(final Date date) { |
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209 // FIXME: timezone? probably must match timezone of database |
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210 final Calendar cal = Calendar.getInstance(); |
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211 cal.clear(); |
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212 cal.setTime(date); |
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213 return cal.get(Calendar.YEAR); |
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214 } |
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215 |
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216 private static Date getEndDateFromYear(final int year) { |
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217 // FIXME: timezone? probably must match timezone of database |
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218 final Calendar cal = Calendar.getInstance(); |
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219 cal.clear(); |
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220 cal.set(year, 11, 31); |
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221 return cal.getTime(); |
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222 } |
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223 |
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224 private static Date getStartDateFromYear(final int year) { |
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225 // FIXME: timezone? probably must match timezone of database |
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226 final Calendar cal = Calendar.getInstance(); |
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227 cal.clear(); |
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228 cal.set(year, 0, 1); |
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229 return cal.getTime(); |
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230 } |
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231 |
| 9404 | 232 private Document buildDocument(final GaugeInfoResult result, final GlobalContext context, final CallMeta meta) { |
| 233 | |
| 234 final Document doc = XMLUtils.newDocument(); | |
| 235 | |
| 236 final ElementCreator cr = new ElementCreator(doc, ArtifactNamespaceContext.NAMESPACE_URI, ArtifactNamespaceContext.NAMESPACE_PREFIX); | |
| 237 | |
| 238 final Element rootEl = cr.create(ROOT_NODE); | |
| 239 | |
| 240 doc.appendChild(rootEl); | |
| 241 | |
| 242 final Element globalErrElement = cr.create("global-error-msg"); | |
| 243 globalErrElement.setTextContent(result.globalErrorMsg); | |
| 244 rootEl.appendChild(globalErrElement); | |
| 245 | |
| 246 final List<GaugeInfoResult.GaugeInfo> values = result.gaugeInfos; | |
| 247 | |
| 248 for (final GaugeInfoResult.GaugeInfo gauge : values) { | |
| 249 final Element gaugeElement = cr.create("gauge"); | |
| 250 cr.addAttr(gaugeElement, "name", gauge.gauge.getName()); | |
| 251 if (gauge.startdate != null) | |
| 252 cr.addAttr(gaugeElement, "date-from", String.valueOf(gauge.startdate.getTime())); | |
| 253 | |
| 254 if (gauge.enddate != null) | |
| 255 cr.addAttr(gaugeElement, "date-to", String.valueOf(gauge.enddate.getTime())); | |
| 256 | |
| 257 if (gauge.errorMsg != null) | |
| 258 cr.addAttr(gaugeElement, "error-message", gauge.errorMsg); | |
| 259 | |
| 260 rootEl.appendChild(gaugeElement); | |
| 261 } | |
| 262 | |
| 263 return doc; | |
| 264 | |
| 265 } | |
| 266 | |
| 267 final Element buildElement(final ElementCreator cr, final String type, final Date date) { | |
| 268 final Element el = cr.create(type); | |
| 269 cr.addAttr(el, "value", String.valueOf(date.getTime())); | |
| 270 return el; | |
| 271 } | |
| 272 | |
| 273 private static final List<Gauge> getRequestedGauges(final Document data, final River river, final CallMeta meta) throws ServiceException { | |
| 274 | |
| 275 final NodeList gaugeNodes = data.getElementsByTagNameNS(ArtifactNamespaceContext.NAMESPACE_URI, "gauge"); | |
| 276 | |
| 277 final List<Gauge> gauges = new ArrayList<>(); | |
| 278 | |
| 279 for (int i = 0; i < gaugeNodes.getLength(); i++) { | |
| 280 final Element gaugeElt = (Element) gaugeNodes.item(i); | |
| 281 | |
| 282 final String gaugeName = (String) XMLUtils.xpath(gaugeElt, "text()", XPathConstants.STRING); | |
| 283 final Gauge gauge = Gauge.getGaugeByNameAndRiver(gaugeName, river); | |
| 284 if (gauge != null) | |
| 285 gauges.add(gauge); | |
| 286 else { | |
| 287 throw new ServiceException("bundu_wst_error_reading_gauges"); | |
| 288 } | |
| 289 } | |
| 290 | |
| 291 return gauges; | |
| 292 } | |
| 293 | |
| 294 private static String getMsg(final CallMeta meta, final String key) { | |
| 295 return Resources.getMsg(meta, key); | |
| 296 } | |
| 297 } |