Mercurial > dive4elements > river
view flys-artifacts/src/main/java/de/intevation/flys/artifacts/AnnotationArtifact.java @ 1723:690037105542
Added new Artifact and Facet to access 'static' data via WKmsFactory.
flys-artifacts/trunk@3005 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author | Felix Wolfsteller <felix.wolfsteller@intevation.de> |
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date | Tue, 18 Oct 2011 12:56:12 +0000 |
parents | 19d0eb41e923 |
children | 5d8b3880a553 |
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package de.intevation.flys.artifacts; import java.util.ArrayList; import java.util.List; import org.w3c.dom.Document; import org.w3c.dom.Element; import org.apache.log4j.Logger; import net.sf.ehcache.Cache; import de.intevation.artifacts.Artifact; import de.intevation.artifacts.ArtifactNamespaceContext; import de.intevation.artifacts.CallContext; import de.intevation.artifacts.CallMeta; import de.intevation.artifactdatabase.ProtocolUtils; import de.intevation.artifactdatabase.state.Facet; import de.intevation.artifactdatabase.state.Output; import de.intevation.artifactdatabase.state.State; import de.intevation.artifactdatabase.state.StateEngine; import de.intevation.artifacts.common.utils.XMLUtils; import de.intevation.flys.artifacts.states.DefaultState; import de.intevation.flys.artifacts.cache.CacheFactory; import de.intevation.flys.artifacts.context.FLYSContext; import de.intevation.flys.artifacts.model.AnnotationsFactory; import de.intevation.flys.model.Annotation; import de.intevation.flys.utils.FLYSUtils; /** * Artifact to access names of Points Of Interest along a segment of a river. */ public class AnnotationArtifact extends StaticFLYSArtifact { /** The logger for this class. */ private static Logger logger = Logger.getLogger(AnnotationArtifact.class); /** The name of the artifact. */ public static final String ARTIFACT_NAME = "annotation"; /* Name of cache. */ public static final String CACHE_NAME = "annotations"; @Override protected void initialize(Artifact artifact, Object context, CallMeta meta) { logger.debug("AnnotationArtifact.initialize, id: " + artifact.identifier()); FLYSArtifact flys = (FLYSArtifact) artifact; addData("river", flys.getData("river")); List<Facet> fs = new ArrayList<Facet>(); // TODO Add CallMeta (duplicate TODO in RiverAxisArtifact.java). DefaultState state = (DefaultState) getCurrentState(context); state.computeInit(this, hash(), context, meta, fs); if (!fs.isEmpty()) { logger.debug("Facets to add in AnnotationsArtifact.initialize ."); facets.put(getCurrentStateId(), fs); } else { logger.debug("No facets to add in AnnotationsArtifact.initialize ."); } } public double[] getDistance() { /** TODO In initialize(), access maximal range of river (via * AnnotationFactory) instead of overriding getDistance, * important for diagram generation. */ return new double[] {0f, 1000f}; } /** * Create the description of this AnnotationArtifact-instance. * * @param data Some data. * @param context The CallContext. * * @return the description of this artifact. */ @Override public Document describe(Document data, CallContext context) { logger.debug("Describe: the current state is: " + getCurrentStateId()); if (logger.isDebugEnabled()) { dumpArtifact(); } FLYSContext flysContext = getFlysContext(context); StateEngine stateEngine = (StateEngine) flysContext.get( FLYSContext.STATE_ENGINE_KEY); Document description = XMLUtils.newDocument(); XMLUtils.ElementCreator creator = new XMLUtils.ElementCreator( description, ArtifactNamespaceContext.NAMESPACE_URI, ArtifactNamespaceContext.NAMESPACE_PREFIX); Element root = ProtocolUtils.createRootNode(creator); description.appendChild(root); State current = getCurrentState(context); ProtocolUtils.appendDescribeHeader(creator, root, identifier(), hash()); ProtocolUtils.appendState(creator, root, current); Element name = ProtocolUtils.createArtNode( creator, "name", new String[] { "value" }, new String[] { getName() }); Element outs = ProtocolUtils.createArtNode( creator, "outputmodes", null, null); appendOutputModes(description, outs, context); root.appendChild(name); root.appendChild(outs); return description; } /** * Returns the name of the concrete artifact. * * @return the name of the concrete artifact. */ public String getName() { return ARTIFACT_NAME; } /** * Append outputmode elements to given document. * * @param doc Document to add outputmodes to. * @param outs Element to add outputmode elements to. * @param context The given CallContext (mostly for internationalization). */ //@Override protected void appendOutputModes( Document doc, Element outs, CallContext context) { List<String> stateIds = getPreviousStateIds(); XMLUtils.ElementCreator creator = new XMLUtils.ElementCreator( doc, ArtifactNamespaceContext.NAMESPACE_URI, ArtifactNamespaceContext.NAMESPACE_PREFIX); FLYSContext flysContext = getFlysContext(context); StateEngine engine = (StateEngine) flysContext.get( FLYSContext.STATE_ENGINE_KEY); for (String stateId: stateIds) { logger.debug("Append output modes for state: " + stateId); DefaultState state = (DefaultState) engine.getState(stateId); List<Output> list = state.getOutputs(); if (list == null || list.size() == 0) { logger.debug("-> No output modes for this state."); continue; } List<Facet> fs = facets.get(stateId); if (fs == null || fs.size() == 0) { logger.debug("No facets found."); continue; } logger.debug("Found " + fs.size() + " facets in previous states."); List<Output> generated = generateOutputs(list, fs); ProtocolUtils.appendOutputModes(doc, outs, generated); } try { DefaultState cur = (DefaultState) getCurrentState(context); if (cur.validate(this)) { List<Output> list = cur.getOutputs(); if (list != null && list.size() > 0) { logger.debug( "Append output modes for state: " + cur.getID()); List<Facet> fs = facets.get(cur.getID()); if (fs != null && fs.size() > 0) { List<Output> generated = generateOutputs(list, fs); logger.debug("Found " + fs.size() + " current facets."); if (!generated.isEmpty()) { ProtocolUtils.appendOutputModes( doc, outs, generated); } else{ logger.debug("Cannot append output to generated document."); } } else { logger.debug("No facets found for the current state."); } } } } catch (IllegalArgumentException iae) { // state is not valid, so we do not append its outputs. } } /** * Get Annotations for Points (opposed to segments) in river in range. * * @return list of Annotations. */ public List<Annotation> getAnnotations() { String river = FLYSUtils.getRiver(this).getName(); logger.debug("Search annotations for river: " + river); Cache cache = CacheFactory.getCache(CACHE_NAME); String key = river; Object old = null; if (cache != null) { logger.debug("We are using a cache for annotations."); net.sf.ehcache.Element element = cache.get(key); if (element != null) { logger.info("Fetched annotations from cache."); old = element.getValue(); } } if (old == null) { old = getAnnotationsUncached(river); } if (cache != null && old != null) { cache.put(new net.sf.ehcache.Element(key, old)); } return old != null ? (List<Annotation>) old : new ArrayList<Annotation>(); } /** * Gets Annotations from Session/Database. * * @return List of Annotations fetched fresh from session/database. * @see DistanceInfoService to access cached documents. */ protected List<Annotation> getAnnotationsUncached(String river) { logger.info("Fetch annotations from database."); List<Annotation> annotations = new ArrayList<Annotation>(); annotations = AnnotationsFactory.getPointAnnotations(river); return annotations; } } // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :