Mercurial > dive4elements > gnv-client
diff gnv-artifacts/src/main/java/de/intevation/gnv/state/profile/horizontal/HorizontalProfileMeshVectorOutputState.java @ 1074:649f564a5184
Implemented a new output state and chart type for horizontal profiles using vector data.
gnv-artifacts/trunk@1174 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author | Ingo Weinzierl <ingo.weinzierl@intevation.de> |
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date | Tue, 08 Jun 2010 13:00:58 +0000 |
parents | |
children | dc9727a67d41 |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/gnv-artifacts/src/main/java/de/intevation/gnv/state/profile/horizontal/HorizontalProfileMeshVectorOutputState.java Tue Jun 08 13:00:58 2010 +0000 @@ -0,0 +1,111 @@ +package de.intevation.gnv.state.profile.horizontal; + +import de.intevation.artifacts.CallContext; + +import de.intevation.gnv.artifacts.cache.CacheFactory; + +import de.intevation.gnv.chart.Chart; +import de.intevation.gnv.chart.ChartLabels; +import de.intevation.gnv.chart.HorizontalProfileVectorChart; + +import de.intevation.gnv.geobackend.base.Result; + +import de.intevation.gnv.utils.VectorDataProcessor; + +import java.util.Collection; +import java.util.Locale; + +import net.sf.ehcache.Cache; + +import org.apache.log4j.Logger; + +import org.jfree.chart.ChartTheme; + + +/** + * @author <a href="mailto:ingo.weinzierl@intevation.de">Ingo Weinzierl</a> + */ +public class HorizontalProfileMeshVectorOutputState +extends HorizontalProfileMeshOutputState +{ + private static Logger logger = + Logger.getLogger(HorizontalProfileMeshVectorOutputState.class); + + public static final String[] RESULT_COLUMNS = { + "YORDINATE", "SHAPE", + "GROUP1", "GROUP2", "GROUP3", + "IPOSITION", "JPOSITION", + "DATAID", "MESHID", + "SERIES" + }; + + + @Override + protected Object getChartResult(String uuid, CallContext callContext) { + logger.debug("Fetch data for horizontalprofile chart with vector data"); + CacheFactory factory = CacheFactory.getInstance(); + + if (factory.isInitialized()) { + // we use a cache + logger.info("Using cache."); + Cache cache = factory.getCache(); + String key = "chart_" + getHash(); + + net.sf.ehcache.Element value = cache.get(key); + if (value != null) { + logger.debug("Found element in cache."); + return value.getObjectValue(); + } + else { + logger.debug("Element not in cache, we ask the database"); + Collection<Result> res = (Collection<Result>)getData(queryID); + res = VectorDataProcessor.process(res, RESULT_COLUMNS); + logger.debug("Got " + res.size() + " elements from database."); + + cache.put(new net.sf.ehcache.Element(key, res)); + + return res; + } + } + else { + // we don't use a cache, so we have to query the database every + // single time + logger.info("Not using a cache."); + return VectorDataProcessor.process( + getData(queryID), RESULT_COLUMNS); + } + } + + + @Override + protected Chart getChart( + ChartLabels chartLables, + ChartTheme theme, + Collection parameters, + Collection measurements, + Collection dates, + Object result, + Locale locale, + String uuid, + boolean linesVisible, + boolean shapesVisible, + CallContext callContext + ) { + Chart chart = new HorizontalProfileVectorChart( + chartLables, + theme, + parameters, + measurements, + dates, + (Collection)result, + timeGapDefinitions, + locale, + linesVisible, + shapesVisible + ); + chart.generateChart(); + + return chart; + } +} +// vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :