[Dive4elements-commits] [PATCH 3 of 5] New client side service for sediment load infos
Wald Commits
scm-commit at wald.intevation.org
Mon Oct 29 13:18:53 CET 2012
# HG changeset patch
# User Raimund Renkert <rrenkert at intevation.de>
# Date 1351512803 -3600
# Node ID 1f98a3a89e130f632bc4ed2706d2f731b54de5c8
# Parent 6d44914b2dd4ee80138d30fec0f48b9e29400333
New client side service for sediment load infos.
The service requests an sediment load overview and creates info objects for the
received data.
diff -r 6d44914b2dd4 -r 1f98a3a89e13 flys-client/src/main/java/de/intevation/flys/client/client/services/SedimentLoadInfoService.java
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/flys-client/src/main/java/de/intevation/flys/client/client/services/SedimentLoadInfoService.java Mon Oct 29 13:13:23 2012 +0100
@@ -0,0 +1,30 @@
+package de.intevation.flys.client.client.services;
+
+import com.google.gwt.user.client.rpc.RemoteService;
+import com.google.gwt.user.client.rpc.RemoteServiceRelativePath;
+
+import de.intevation.flys.client.shared.exceptions.ServerException;
+import de.intevation.flys.client.shared.model.DischargeInfoObject;
+import de.intevation.flys.client.shared.model.SedimentLoadInfoObject;
+
+/**
+ * This service is used to fetch a list of SedimentLoadInfoObjects from artifact
+ * server for a specific river.
+ *
+ * @author <a href="mailto:raimund.renkert at intevation.de">Raimund Renkert</a>
+ */
+ at RemoteServiceRelativePath("sedimentloadinfo")
+public interface SedimentLoadInfoService extends RemoteService {
+
+ /**
+ * This method returns a list of SedimentLoadInfoObjects for a specific river.
+ */
+ SedimentLoadInfoObject[] getSedimentLoadInfo(
+ String locale,
+ String river,
+ String type,
+ double startKm,
+ double endKm)
+ throws ServerException;
+}
+// vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :
diff -r 6d44914b2dd4 -r 1f98a3a89e13 flys-client/src/main/java/de/intevation/flys/client/client/services/SedimentLoadInfoServiceAsync.java
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/flys-client/src/main/java/de/intevation/flys/client/client/services/SedimentLoadInfoServiceAsync.java Mon Oct 29 13:13:23 2012 +0100
@@ -0,0 +1,20 @@
+package de.intevation.flys.client.client.services;
+
+import com.google.gwt.user.client.rpc.AsyncCallback;
+
+import de.intevation.flys.client.shared.model.SedimentLoadInfoObject;
+
+/**
+ * @author <a href="mailto:raimund.renkert at intevation.de">Raimund Renkert</a>
+ */
+public interface SedimentLoadInfoServiceAsync {
+
+ void getSedimentLoadInfo(
+ String locale,
+ String river,
+ String type,
+ double startKm,
+ double endKm,
+ AsyncCallback<SedimentLoadInfoObject[]> cb);
+}
+// vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :
diff -r 6d44914b2dd4 -r 1f98a3a89e13 flys-client/src/main/java/de/intevation/flys/client/server/SedimentLoadInfoServiceImpl.java
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/flys-client/src/main/java/de/intevation/flys/client/server/SedimentLoadInfoServiceImpl.java Mon Oct 29 13:13:23 2012 +0100
@@ -0,0 +1,152 @@
+package de.intevation.flys.client.server;
+
+import java.util.ArrayList;
+import java.util.List;
+
+import org.apache.log4j.Logger;
+import org.w3c.dom.Document;
+import org.w3c.dom.Element;
+import org.w3c.dom.NodeList;
+
+import com.google.gwt.user.server.rpc.RemoteServiceServlet;
+
+import de.intevation.artifacts.common.ArtifactNamespaceContext;
+import de.intevation.artifacts.common.utils.XMLUtils;
+import de.intevation.artifacts.httpclient.exceptions.ConnectionException;
+import de.intevation.artifacts.httpclient.http.HttpClient;
+import de.intevation.artifacts.httpclient.http.HttpClientImpl;
+import de.intevation.flys.client.client.services.SedimentLoadInfoService;
+import de.intevation.flys.client.shared.exceptions.ServerException;
+import de.intevation.flys.client.shared.model.SedimentLoadInfoObject;
+import de.intevation.flys.client.shared.model.SedimentLoadInfoObjectImpl;
+
+
+public class SedimentLoadInfoServiceImpl
+extends RemoteServiceServlet
+implements SedimentLoadInfoService
+{
+ private static final Logger logger =
+ Logger.getLogger(SedimentLoadInfoServiceImpl.class);
+
+ public static final String ERROR_NO_SEDIMENTLOADINFO_FOUND =
+ "error_no_sedimentloadinfo_found";
+
+ @Override
+ public SedimentLoadInfoObject[] getSedimentLoadInfo(
+ String locale,
+ String river,
+ String type,
+ double startKm,
+ double endKm)
+ throws ServerException
+ {
+ logger.info("SedimentLoadInfoServiceImpl.getSedimentLoadInfo");
+
+ String url = getServletContext().getInitParameter("server-url");
+
+ Document doc = XMLUtils.newDocument();
+
+ XMLUtils.ElementCreator ec = new XMLUtils.ElementCreator(
+ doc,
+ ArtifactNamespaceContext.NAMESPACE_URI,
+ ArtifactNamespaceContext.NAMESPACE_PREFIX);
+
+ Element riverEl = ec.create("river");
+ Element location = ec.create("location");
+ Element from = ec.create("from");
+ Element to = ec.create("to");
+ Element typeEl = ec.create("type");
+ riverEl.setTextContent(river);
+ from.setTextContent(String.valueOf(startKm));
+ to.setTextContent(String.valueOf(endKm));
+ typeEl.setTextContent(type);
+
+ location.appendChild(from);
+ location.appendChild(to);
+ riverEl.appendChild(location);
+ riverEl.appendChild(typeEl);
+ doc.appendChild(riverEl);
+
+ HttpClient client = new HttpClientImpl(url, locale);
+
+ try {
+ Document result = client.callService(url, "sedimentloadinfo", doc);
+
+ logger.debug("Extract sedimentload info objects now.");
+ SedimentLoadInfoObject[] objects =
+ extractSedimentLoadInfoObjects(result);
+
+ if (objects != null && objects.length > 0) {
+ return objects;
+ }
+ }
+ catch (ConnectionException ce) {
+ logger.error(ce, ce);
+ }
+
+ throw new ServerException(ERROR_NO_SEDIMENTLOADINFO_FOUND);
+ }
+
+
+ /**
+ * Extracts all distance info objects from <i>result</i> document.
+ *
+ * @param result The document retrieved by the server.
+ *
+ * @return a list of DistanceInfoObjects.
+ */
+ protected SedimentLoadInfoObject[] extractSedimentLoadInfoObjects(
+ Document result)
+ throws ServerException
+ {
+ NodeList list = result.getElementsByTagName("sedimentload");
+
+ if (list == null || list.getLength() == 0) {
+ logger.warn("No sedimentload info found.");
+ throw new ServerException(ERROR_NO_SEDIMENTLOADINFO_FOUND);
+ }
+
+ int num = list.getLength();
+ logger.debug("Response contains " + num + " objects.");
+
+ List<SedimentLoadInfoObject> objects =
+ new ArrayList<SedimentLoadInfoObject>(num);
+
+ for (int i = 0; i < num; i++) {
+ SedimentLoadInfoObject obj = buildSedimentLoadInfoObject(
+ (Element)list.item(i));
+
+ if (obj != null) {
+ objects.add(obj);
+ }
+ }
+
+ logger.debug("Retrieved " + objects.size() + " sediment loads.");
+
+ return (SedimentLoadInfoObject[])
+ objects.toArray(new SedimentLoadInfoObject[num]);
+ }
+
+
+ /**
+ * Extracts information for a single distance info object and intializes an
+ * DistanceInfoObject with them.
+ *
+ * @param node The node that contains the information.
+ *
+ * @return a valid DistanceInfoObject.
+ */
+ protected SedimentLoadInfoObject buildSedimentLoadInfoObject(Element node) {
+
+ String desc = node.getAttribute("description").trim();
+ String date = node.getAttribute("date").trim();
+
+ if (desc.length() > 0 && date.length() > 0) {
+ return new SedimentLoadInfoObjectImpl(desc, date);
+ }
+
+ logger.warn("Invalid sediment load info object found.");
+
+ return null;
+ }
+}
diff -r 6d44914b2dd4 -r 1f98a3a89e13 flys-client/src/main/java/de/intevation/flys/client/shared/model/SedimentLoadInfoObject.java
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/flys-client/src/main/java/de/intevation/flys/client/shared/model/SedimentLoadInfoObject.java Mon Oct 29 13:13:23 2012 +0100
@@ -0,0 +1,15 @@
+package de.intevation.flys.client.shared.model;
+
+import java.io.Serializable;
+
+
+/**
+ * @author <a href="mailto:raimund.renkert at intevation.de">Raimund Renkert</a>
+ */
+public interface SedimentLoadInfoObject extends Serializable {
+
+ String getDescription();
+
+ String getDate();
+}
+// vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :
\ No newline at end of file
diff -r 6d44914b2dd4 -r 1f98a3a89e13 flys-client/src/main/java/de/intevation/flys/client/shared/model/SedimentLoadInfoObjectImpl.java
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/flys-client/src/main/java/de/intevation/flys/client/shared/model/SedimentLoadInfoObjectImpl.java Mon Oct 29 13:13:23 2012 +0100
@@ -0,0 +1,31 @@
+package de.intevation.flys.client.shared.model;
+
+
+/**
+ * @author <a href="mailto:raimund.renkert at intevation.de">Raimund Renkert</a>
+ */
+public class SedimentLoadInfoObjectImpl implements SedimentLoadInfoObject {
+
+ protected String description;
+ protected String dateString;
+
+ public SedimentLoadInfoObjectImpl() {
+ }
+
+ public SedimentLoadInfoObjectImpl(
+ String description,
+ String dateString
+ ) {
+ this.description = description;
+ this.dateString = dateString;
+ }
+
+ public String getDescription() {
+ return description;
+ }
+
+ public String getDate() {
+ return this.dateString;
+ }
+}
+// vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :
\ No newline at end of file
diff -r 6d44914b2dd4 -r 1f98a3a89e13 flys-client/src/main/webapp/WEB-INF/web.xml
--- a/flys-client/src/main/webapp/WEB-INF/web.xml Mon Oct 29 13:09:16 2012 +0100
+++ b/flys-client/src/main/webapp/WEB-INF/web.xml Mon Oct 29 13:13:23 2012 +0100
@@ -533,6 +533,16 @@
</servlet-mapping>
<servlet>
+ <servlet-name>SedimentLoadInfo</servlet-name>
+ <servlet-class>de.intevation.flys.client.server.SedimentLoadInfoServiceImpl</servlet-class>
+ </servlet>
+
+ <servlet-mapping>
+ <servlet-name>SedimentLoadInfo</servlet-name>
+ <url-pattern>/flys/sedimentloadinfo</url-pattern>
+ </servlet-mapping>
+
+ <servlet>
<servlet-name>login</servlet-name>
<servlet-class>de.intevation.flys.client.server.LoginServlet</servlet-class>
</servlet>
More information about the Dive4elements-commits
mailing list