# HG changeset patch # User Felix Wolfsteller # Date 1314967705 0 # Node ID aa83a6a864b4a01fd4af889c3ce75dc0a5caf548 # Parent d02c3835df2899161e4d76fbcce117ace8965825 Added FeedService Implementation. flys-client/trunk@2636 c6561f87-3c4e-4783-a992-168aeb5c3f6f diff -r d02c3835df28 -r aa83a6a864b4 flys-client/ChangeLog --- a/flys-client/ChangeLog Thu Sep 01 12:49:12 2011 +0000 +++ b/flys-client/ChangeLog Fri Sep 02 12:48:25 2011 +0000 @@ -1,3 +1,16 @@ +2011-09-02 Felix Wolfsteller + + Added implementation of a FeedService. + + * src/main/java/de/intevation/flys/client/client/services/FeedServiceAsync.java, + src/main/java/de/intevation/flys/client/client/services/FeedService.java, + src/main/java/de/intevation/flys/client/server/FeedServiceImpl.java: + Added implementation of a FeedService (shamelessly copied from + ~AdvanceService) + + * src/main/webapp/WEB-INF/web.xml: + Added configuration of feedService. + 2011-09-01 Ingo Weinzierl * src/main/java/de/intevation/flys/client/client/ui/map/DrawControl.java: diff -r d02c3835df28 -r aa83a6a864b4 flys-client/src/main/java/de/intevation/flys/client/client/services/FeedService.java --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/flys-client/src/main/java/de/intevation/flys/client/client/services/FeedService.java Fri Sep 02 12:48:25 2011 +0000 @@ -0,0 +1,33 @@ +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.Artifact; +import de.intevation.flys.client.shared.model.Data; + +/** + * This interface provides artifact specific operation FEED. + */ +@RemoteServiceRelativePath("feed") +public interface FeedService extends RemoteService { + + /** + * This method inserts new data into the an existing artifact. + * + * @param serverUrl The url of the artifact server. + * @param locale The locale used for the request. + * @param artifact The artifact. + * @param data The data that should be inserted. + * + * @return the artifact which description might have been changed. + */ + public Artifact feed( + String serverUrl, + String locale, + Artifact artifact, + Data[] data) + throws ServerException; +} +// vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 : diff -r d02c3835df28 -r aa83a6a864b4 flys-client/src/main/java/de/intevation/flys/client/client/services/FeedServiceAsync.java --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/flys-client/src/main/java/de/intevation/flys/client/client/services/FeedServiceAsync.java Fri Sep 02 12:48:25 2011 +0000 @@ -0,0 +1,21 @@ +package de.intevation.flys.client.client.services; + +import com.google.gwt.user.client.rpc.AsyncCallback; + +import de.intevation.flys.client.shared.model.Artifact; +import de.intevation.flys.client.shared.model.Data; + + +/** + * This interface provides artifact specific operation FEED. + */ +public interface FeedServiceAsync { + + public void feed( + String serverUrl, + String locale, + Artifact artifact, + Data[] data, + AsyncCallback callback); +} +// vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 : diff -r d02c3835df28 -r aa83a6a864b4 flys-client/src/main/java/de/intevation/flys/client/server/FeedServiceImpl.java --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/flys-client/src/main/java/de/intevation/flys/client/server/FeedServiceImpl.java Fri Sep 02 12:48:25 2011 +0000 @@ -0,0 +1,134 @@ +package de.intevation.flys.client.server; + +import org.w3c.dom.Document; + +import com.google.gwt.user.server.rpc.RemoteServiceServlet; + +import de.intevation.artifacts.common.ArtifactNamespaceContext; +import de.intevation.artifacts.common.utils.ClientProtocolUtils; +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.artifacts.httpclient.http.response.DocumentResponseHandler; + +import de.intevation.flys.client.shared.exceptions.ServerException; +import de.intevation.flys.client.shared.model.Artifact; +import de.intevation.flys.client.shared.model.ArtifactDescription; +import de.intevation.flys.client.shared.model.Data; +import de.intevation.flys.client.shared.model.DataItem; +import de.intevation.flys.client.client.services.FeedService; + +/** + * This interface provides a method that bundles the artifact specific + * operation FEED. + */ +public class FeedServiceImpl +extends RemoteServiceServlet +implements FeedService +{ + /** XPath that points to the result type of a feed or advance operation.*/ + public static final String XPATH_RESULT = "/art:result/@art:type"; + + /** XPath that points to the result type of a feed or advance operation.*/ + public static final String XPATH_RESULT_MSG = "/art:result/text()"; + + /** A constant that marks errors.*/ + public static final String OPERATION_FAILURE = "FAILURE"; + + /** The error message key that is thrown if an error occured while feeding + * new data.*/ + public static final String ERROR_FEED_DATA = "error_feed_data"; + + + /** + * This method triggers the FEED operation. + * + * @param url The url of the artifact server. + * @param artifact The artifact that needs to be fed. + * @param data An array of Data objects that contain the information that + * are used for the FEED operation. + * + * @return a new artifact parsed from the description of FEED. + */ + public Artifact feed( + String url, + String locale, + Artifact artifact, + Data[] data) + throws ServerException + { + System.out.println("StepForwardServiceImpl.feed"); + + Document feed = ClientProtocolUtils.newFeedDocument( + artifact.getUuid(), + artifact.getHash(), + createKVP(data)); + + HttpClient client = new HttpClientImpl(url, locale); + + try { + Document description = (Document) client.feed( + new de.intevation.artifacts.httpclient.objects.Artifact( + artifact.getUuid(), + artifact.getHash()), + feed, + new DocumentResponseHandler()); + + if (description == null) { + System.err.println("StepForwardService.feed() - FAILED"); + throw new ServerException(ERROR_FEED_DATA); + } + + String result = XMLUtils.xpathString( + description, + XPATH_RESULT, + ArtifactNamespaceContext.INSTANCE); + + if (result == null || !result.equals(OPERATION_FAILURE)) { + System.out.println("StepForwardService.feed() - SUCCESS"); + return (Artifact) new FLYSArtifactCreator().create(description); + } + else if (result != null && result.equals(OPERATION_FAILURE)) { + String msg = XMLUtils.xpathString( + description, + XPATH_RESULT_MSG, + ArtifactNamespaceContext.INSTANCE); + throw new ServerException(msg); + } + } + catch (ConnectionException ce) { + System.err.println(ce.getLocalizedMessage()); + } + + System.err.println("StepForwardService.feed() - FAILED"); + throw new ServerException(ERROR_FEED_DATA); + } + + + /** + * This method creates an array of key/value pairs from an array of Data + * objects. The string array is used as parameter for the feed() operation. + * + * @param data The data that should be transformed into the string array. + * + * @return a string array that contains key/value pairs. + */ + protected String[][] createKVP(Data[] data) { + String[][] kvp = new String[data.length][]; + + int i = 0; + + for (Data d: data) { + DataItem[] items = d.getItems(); + String key = d.getLabel(); + String value = items[0].getStringValue(); + + kvp[i++] = new String[] { key, value }; + } + + return kvp; + } +} +// vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 : diff -r d02c3835df28 -r aa83a6a864b4 flys-client/src/main/webapp/WEB-INF/web.xml --- a/flys-client/src/main/webapp/WEB-INF/web.xml Thu Sep 01 12:49:12 2011 +0000 +++ b/flys-client/src/main/webapp/WEB-INF/web.xml Fri Sep 02 12:48:25 2011 +0000 @@ -68,6 +68,16 @@ + feed + de.intevation.flys.client.server.FeedServiceImpl + + + + feed + /flys/feed + + + advance de.intevation.flys.client.server.AdvanceServiceImpl