Mercurial > dive4elements > framework
diff artifact-database/src/main/java/de/intevation/artifactdatabase/ArtifactCallContext.java @ 219:cabe4c02ab64
Refactored the CallContextImpl - there are two concrete classes for Artifacts and ArtifactCollections now.
artifacts/trunk@1559 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author | Ingo Weinzierl <ingo.weinzierl@intevation.de> |
---|---|
date | Thu, 24 Mar 2011 16:16:51 +0000 |
parents | |
children | a8a06bbe306c |
line wrap: on
line diff
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/artifact-database/src/main/java/de/intevation/artifactdatabase/ArtifactCallContext.java Thu Mar 24 16:16:51 2011 +0000 @@ -0,0 +1,107 @@ +/* + * Copyright (c) 2010, 2011 by Intevation GmbH + * + * This program is free software under the LGPL (>=v2.1) + * Read the file LGPL.txt coming with the software for details + * or visit http://www.gnu.org/licenses/ if it does not exist. + */ +package de.intevation.artifactdatabase; + +import org.apache.log4j.Logger; + +import de.intevation.artifacts.CallMeta; + +import de.intevation.artifactdatabase.Backend.PersistentArtifact; + + +/** + * Class that implements the call context handed to the methods calls + * describe(), feed(), etc. of the artifact. + * + * @author <a href="mailto:sascha.teichmann@intevation.de">Sascha L. Teichmann</a> + */ +public class ArtifactCallContext extends AbstractCallContext { + + private static Logger logger = Logger.getLogger(ArtifactCallContext.class); + + + /** + * Error message issued if an artifact wants to translate itself + * into a none valid persistent state. + */ + public static final String INVALID_CALL_STATE = "Invalid after call state"; + + /** + * Error message issued if one tries to remove a requested artifact + * from the list of artifacts running in background which is + * not in this list. + */ + public static final String NOT_IN_BACKGROUND = "Not in background"; + + + /** + * The persistence wrapper around the living artifact + */ + protected PersistentArtifact artifact; + + + public ArtifactCallContext( + ArtifactDatabaseImpl artifactDatabase, + int action, + CallMeta callMeta, + Object context, + PersistentArtifact artifact) + { + super(artifactDatabase, action, callMeta, context); + + this.artifact = artifact; + } + + + public void afterCall(int action) { + this.action = action; + if (action == BACKGROUND) { + database.addIdToBackground(artifact.getId()); + } + } + + + public void afterBackground(int action) { + if (this.action != BACKGROUND) { + throw new IllegalStateException(NOT_IN_BACKGROUND); + } + database.fromBackground(artifact, action); + } + + + public Long getTimeToLive() { + return artifact.getTTL(); + } + + + /** + * Dispatches and executes the persistence action after + * the return of the concrete artifact call. + */ + public void postCall() { + switch (action) { + case NOTHING: + break; + case TOUCH: + artifact.touch(); + break; + case STORE: + artifact.store(); + break; + case BACKGROUND: + logger.warn( + "BACKGROUND processing is not fully implemented, yet!"); + artifact.store(); + break; + default: + logger.error(INVALID_CALL_STATE + ": " + action); + throw new IllegalStateException(INVALID_CALL_STATE); + } + } +} +// vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :