Mercurial > dive4elements > river
changeset 4218:6ae99d996f79
flys/issue903: Display the discharge tables of the selected gauge as chart in historical discharge calculation.
There is a new class 'DischargeTablesChart' which is a Canvas and displays the chart using the new service
'DischargeTablesServiceImpl'.
author | Ingo Weinzierl <ingo.weinzierl@intevation.de> |
---|---|
date | Tue, 23 Oct 2012 12:01:19 +0200 |
parents | 08b6458909a9 |
children | b7535b66490e |
files | flys-client/src/main/java/de/intevation/flys/client/client/ui/WQSimpleArrayPanel.java flys-client/src/main/java/de/intevation/flys/client/client/widgets/DischargeTablesChart.java flys-client/src/main/java/de/intevation/flys/client/server/DischargeTablesServiceImpl.java flys-client/src/main/webapp/WEB-INF/web.xml |
diffstat | 4 files changed, 247 insertions(+), 1 deletions(-) [+] |
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--- a/flys-client/src/main/java/de/intevation/flys/client/client/ui/WQSimpleArrayPanel.java Tue Oct 23 11:58:47 2012 +0200 +++ b/flys-client/src/main/java/de/intevation/flys/client/client/ui/WQSimpleArrayPanel.java Tue Oct 23 12:01:19 2012 +0200 @@ -29,7 +29,7 @@ import de.intevation.flys.client.client.ui.wq.ClickableQDTable; import de.intevation.flys.client.client.ui.wq.ClickableWTable; import de.intevation.flys.client.client.ui.wq.ClickableWTable.ClickMode; -import de.intevation.flys.client.client.ui.wq.QDTable; +import de.intevation.flys.client.client.widgets.DischargeTablesChart; import de.intevation.flys.client.shared.model.ArtifactDescription; import de.intevation.flys.client.shared.model.Data; import de.intevation.flys.client.shared.model.DataItem; @@ -208,12 +208,15 @@ Tab w = new Tab(MSG.wq_table_w()); Tab q = new Tab(MSG.wq_table_q()); + Tab c = new Tab(MSG.chart()); w.setPane(wTable); q.setPane(qTable); + c.setPane(new DischargeTablesChart(this.artifact)); tabs.addTab(w, 0); tabs.addTab(q, 1); + tabs.addTab(c, 2); helperContainer.addMember(tabs); }
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/flys-client/src/main/java/de/intevation/flys/client/client/widgets/DischargeTablesChart.java Tue Oct 23 12:01:19 2012 +0200 @@ -0,0 +1,90 @@ +package de.intevation.flys.client.client.widgets; + +import com.google.gwt.core.client.GWT; +import com.smartgwt.client.widgets.Canvas; +import com.smartgwt.client.widgets.Img; +import com.smartgwt.client.widgets.events.ResizedEvent; +import com.smartgwt.client.widgets.events.ResizedHandler; + +import de.intevation.flys.client.shared.model.Artifact; +import de.intevation.flys.client.shared.model.ArtifactDescription; + + +public class DischargeTablesChart extends Canvas implements ResizedHandler { + + protected Artifact artifact; + + protected Img img; + + public DischargeTablesChart() { + super(); + } + + public DischargeTablesChart(Artifact artifact) { + super(); + this.artifact = artifact; + init(); + } + + private void init() { + addChild(createImage()); + addResizedHandler(this); + setSize("100%", "100%"); + } + + protected Img createImage() { + img = new Img(getUrl()); + img.setSize("100%", "100%"); + + return img; + } + + protected String getUrl() { + String url = GWT.getModuleBaseURL(); + url += "dischargetablesoverview"; + url += "?gauge=" + getGauge(); + url += "&format=png"; + + String[] timerange = getTimerange(); + url += "&lower=" + timerange[0]; + url += "&upper=" + timerange[1]; + + int width = 600; + int height = 400; + if (img != null) { + width = img.getWidth(); + height = img.getHeight(); + } + + url += "&width=" + String.valueOf(width); + url += "&height=" + String.valueOf(height); + + // add time millis to 'deactivate' caching + url += "&timemillis" + System.currentTimeMillis(); + + GWT.log("DischargeTablesService URL = '" + url + "'"); + return url; + } + + protected String getGauge() { + ArtifactDescription desc = artifact.getArtifactDescription(); + return desc.getReferenceGauge(); + } + + protected String[] getTimerange() { + ArtifactDescription desc = artifact.getArtifactDescription(); + String yearStr = desc.getDataValueAsString("year_range"); + + if (yearStr != null && yearStr.length() > 0) { + return yearStr.split(";"); + } + + return new String[2]; + } + + @Override + public void onResized(ResizedEvent event) { + GWT.log("resized discharge tables overview chart"); + img.setSrc(getUrl()); + } +}
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/flys-client/src/main/java/de/intevation/flys/client/server/DischargeTablesServiceImpl.java Tue Oct 23 12:01:19 2012 +0200 @@ -0,0 +1,143 @@ +package de.intevation.flys.client.server; + +import java.io.IOException; +import java.io.InputStream; +import java.io.OutputStream; +import java.text.DateFormat; +import java.util.Date; +import java.util.Locale; + +import javax.servlet.http.HttpServlet; +import javax.servlet.http.HttpServletRequest; +import javax.servlet.http.HttpServletResponse; + +import org.apache.log4j.Logger; +import org.w3c.dom.Document; +import org.w3c.dom.Element; + +import de.intevation.artifacts.common.utils.XMLUtils; +import de.intevation.artifacts.httpclient.http.HttpClient; +import de.intevation.artifacts.httpclient.http.HttpClientImpl; +import de.intevation.artifacts.httpclient.http.response.StreamResponseHandler; + + +public class DischargeTablesServiceImpl extends HttpServlet { + + private static final Logger logger = Logger + .getLogger(DischargeInfoServiceImpl.class); + + private static final DateFormat DATE_FORMAT = DateFormat.getDateInstance( + DateFormat.MEDIUM, Locale.GERMANY); + + public void doGet(HttpServletRequest req, HttpServletResponse resp) { + logger.info("ChartOutputServiceImpl.doGet"); + + String url = getServletContext().getInitParameter("server-url"); + String locale = req.getParameter("locale"); + + prepareHeader(req, resp); + + Document requestDoc = createRequestDoc(req); + + HttpClient client = new HttpClientImpl(url, locale); + + try { + OutputStream out = resp.getOutputStream(); + InputStream stream = (InputStream) client.callService(url, + "dischargetablesoverview", requestDoc, + new StreamResponseHandler()); + + byte[] b = new byte[4096]; + try { + int i; + while ((i = stream.read(b)) >= 0) { + out.write(b, 0, i); + } + } + finally { + stream.close(); + } + } + catch (IOException ioe) { + logger.error("Error while fetching discharge tables chart!", ioe); + } + } + + protected void prepareHeader(HttpServletRequest req, + HttpServletResponse resp) { + resp.setHeader("Content-Type", "image/png"); + } + + protected Document createRequestDoc(HttpServletRequest req) { + Document request = XMLUtils.newDocument(); + XMLUtils.ElementCreator creator = new XMLUtils.ElementCreator(request, + null, null); + + Element service = creator.create("service"); + Element gauge = creator.create("gauge"); + Element extent = creator.create("extent"); + Element format = creator.create("format"); + Element timerange = creator.create("timerange"); + + creator.addAttr(gauge, "name", extractRequestGauge(req)); + creator.addAttr(extent, "width", extractRequestWidth(req)); + creator.addAttr(extent, "height", extractRequestHeight(req)); + creator.addAttr(format, "type", extractRequestFormat(req)); + creator.addAttr(timerange, "lower", extractRequestLowerTime(req)); + creator.addAttr(timerange, "upper", extractRequestUpperTime(req)); + + request.appendChild(service); + service.appendChild(gauge); + service.appendChild(extent); + service.appendChild(format); + service.appendChild(timerange); + + return request; + } + + protected String extractRequestGauge(HttpServletRequest req) { + return req.getParameter("gauge"); + } + + protected String extractRequestWidth(HttpServletRequest req) { + return req.getParameter("width"); + } + + protected String extractRequestHeight(HttpServletRequest req) { + return req.getParameter("height"); + } + + protected String extractRequestFormat(HttpServletRequest req) { + return req.getParameter("format"); + } + + protected String extractRequestLowerTime(HttpServletRequest req) { + String lowerStr = req.getParameter("lower"); + try { + long lowerMillis = Long.parseLong(lowerStr); + Date lower = new Date(lowerMillis); + + return DATE_FORMAT.format(lower); + } + catch (NumberFormatException nfe) { + logger.warn("Cannot parse time millies.", nfe); + } + + return null; + } + + protected String extractRequestUpperTime(HttpServletRequest req) { + String upperStr = req.getParameter("upper"); + try { + long upperMillis = Long.parseLong(upperStr); + Date upper = new Date(upperMillis); + + return DATE_FORMAT.format(upper); + } + catch (NumberFormatException nfe) { + logger.warn("Cannot parse time millies.", nfe); + } + + return null; + } +}
--- a/flys-client/src/main/webapp/WEB-INF/web.xml Tue Oct 23 11:58:47 2012 +0200 +++ b/flys-client/src/main/webapp/WEB-INF/web.xml Tue Oct 23 12:01:19 2012 +0200 @@ -267,6 +267,16 @@ <url-pattern>/flys/chart</url-pattern> </servlet-mapping> + <servlet> + <servlet-name>DischargeTablesOverviewService</servlet-name> + <servlet-class>de.intevation.flys.client.server.DischargeTablesServiceImpl</servlet-class> + </servlet> + + <servlet-mapping> + <servlet-name>DischargeTablesOverviewService</servlet-name> + <url-pattern>/flys/dischargetablesoverview</url-pattern> + </servlet-mapping> + <!-- MapFish Print --> <servlet> <servlet-name>MapOutputService</servlet-name>