Mercurial > dive4elements > river
comparison flys-client/src/main/java/org/dive4elements/river/client/server/RiverServiceImpl.java @ 5834:f507086aa94b
Repaired internal references.
| author | Sascha L. Teichmann <teichmann@intevation.de> |
|---|---|
| date | Thu, 25 Apr 2013 12:31:32 +0200 |
| parents | flys-client/src/main/java/de/intevation/flys/client/server/RiverServiceImpl.java@fed914a42a10 |
| children | 821a02bbfb4e |
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| 5833:a2bdc0f524e8 | 5834:f507086aa94b |
|---|---|
| 1 package de.intevation.flys.client.server; | |
| 2 | |
| 3 import de.intevation.artifacts.common.ArtifactNamespaceContext; | |
| 4 import de.intevation.artifacts.common.utils.XMLUtils; | |
| 5 import de.intevation.artifacts.httpclient.exceptions.ConnectionException; | |
| 6 import de.intevation.artifacts.httpclient.http.HttpClient; | |
| 7 import de.intevation.artifacts.httpclient.http.HttpClientImpl; | |
| 8 import de.intevation.flys.client.client.services.RiverService; | |
| 9 import de.intevation.flys.client.server.auth.User; | |
| 10 import de.intevation.flys.client.shared.exceptions.ServerException; | |
| 11 import de.intevation.flys.client.shared.model.DefaultRiver; | |
| 12 import de.intevation.flys.client.shared.model.River; | |
| 13 | |
| 14 import java.util.ArrayList; | |
| 15 import java.util.List; | |
| 16 | |
| 17 import javax.xml.xpath.XPathConstants; | |
| 18 | |
| 19 import org.apache.log4j.Logger; | |
| 20 import org.w3c.dom.Document; | |
| 21 import org.w3c.dom.Element; | |
| 22 import org.w3c.dom.NodeList; | |
| 23 | |
| 24 | |
| 25 /** | |
| 26 * This interface provides a method to list the supported rivers of the artifact | |
| 27 * server. | |
| 28 * | |
| 29 * @author <a href="mailto:ingo.weinzierl@intevation.de">Ingo Weinzierl</a> | |
| 30 */ | |
| 31 public class RiverServiceImpl | |
| 32 extends RemoteServiceServlet | |
| 33 implements RiverService | |
| 34 { | |
| 35 /** Private logger. */ | |
| 36 private static final Logger logger = | |
| 37 Logger.getLogger(RiverServiceImpl.class); | |
| 38 | |
| 39 /** The XPath string that points to the rivers in the resulting document.*/ | |
| 40 public static final String XPATH_RIVERS = "/art:rivers/art:river"; | |
| 41 | |
| 42 /** The error message key that is thrown if an error occured while reading | |
| 43 * the supported rivers from server.*/ | |
| 44 public static final String ERROR_NO_RIVERS_FOUND = "error_no_rivers_found"; | |
| 45 | |
| 46 | |
| 47 /** Get river list. */ | |
| 48 @Override | |
| 49 public River[] list(String locale) | |
| 50 throws ServerException | |
| 51 { | |
| 52 String url = getServletContext().getInitParameter("server-url"); | |
| 53 | |
| 54 Document doc = XMLUtils.newDocument(); | |
| 55 | |
| 56 XMLUtils.ElementCreator ec = new XMLUtils.ElementCreator( | |
| 57 doc, | |
| 58 ArtifactNamespaceContext.NAMESPACE_URI, | |
| 59 ArtifactNamespaceContext.NAMESPACE_PREFIX); | |
| 60 | |
| 61 doc.appendChild(ec.create("action")); | |
| 62 | |
| 63 HttpClient client = new HttpClientImpl(url, locale); | |
| 64 | |
| 65 try { | |
| 66 Document res = client.callService(url, "rivers", doc); | |
| 67 | |
| 68 NodeList rivers = (NodeList) XMLUtils.xpath( | |
| 69 res, | |
| 70 XPATH_RIVERS, | |
| 71 XPathConstants.NODESET, | |
| 72 ArtifactNamespaceContext.INSTANCE); | |
| 73 | |
| 74 if (rivers == null || rivers.getLength() == 0) { | |
| 75 throw new ServerException(ERROR_NO_RIVERS_FOUND); | |
| 76 } | |
| 77 | |
| 78 int count = rivers.getLength(); | |
| 79 | |
| 80 List<River> theRivers = new ArrayList<River>(count); | |
| 81 User user = this.getUser(); | |
| 82 | |
| 83 for (int i = 0; i < count; i++) { | |
| 84 Element tmp = (Element)rivers.item(i); | |
| 85 | |
| 86 String name = tmp.getAttributeNS( | |
| 87 ArtifactNamespaceContext.NAMESPACE_URI, "name"); | |
| 88 | |
| 89 if (name.length() > 0 | |
| 90 && (user == null || user.canUseFeature("river:" + name))) { | |
| 91 theRivers.add(new DefaultRiver(name)); | |
| 92 } | |
| 93 } | |
| 94 | |
| 95 return theRivers.toArray(new River[theRivers.size()]); | |
| 96 } | |
| 97 catch (ConnectionException ce) { | |
| 98 logger.error(ce, ce); | |
| 99 } | |
| 100 | |
| 101 throw new ServerException(ERROR_NO_RIVERS_FOUND); | |
| 102 } | |
| 103 } | |
| 104 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 : |