--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/artifact-database/src/main/java/org/dive4elements/artifactdatabase/DefaultArtifactFactory.java	Thu Apr 25 10:57:18 2013 +0200
@@ -0,0 +1,172 @@
+/*
+ * Copyright (c) 2010 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 de.intevation.artifacts.common.utils.Config;
+
+import de.intevation.artifacts.Artifact;
+import de.intevation.artifacts.ArtifactFactory;
+import de.intevation.artifacts.ArtifactSerializer;
+import de.intevation.artifacts.CallMeta;
+import de.intevation.artifacts.GlobalContext;
+
+import org.apache.log4j.Logger;
+
+import org.w3c.dom.Document;
+import org.w3c.dom.Node;
+
+/**
+ * Trivial implementation of the ArtifactFactory interface.
+ * Time to live (ttl), name and description are configured
+ * via the Node given to #setup(Document, Node) with attributes
+ * of same name. The class name of the artifacts to be build by this
+ * factory is configures with the attribute 'artifact'.
+ *
+ * @author <a href="mailto:sascha.teichmann@intevation.de">Sascha L. Teichmann</a>
+ */
+public class DefaultArtifactFactory
+implements   ArtifactFactory
+{
+    private static Logger logger =
+        Logger.getLogger(DefaultArtifactFactory.class);
+
+    /**
+     * XPath to access the TTL of this artifact.
+     */
+    public static final String XPATH_TTL         = "@ttl";
+    /**
+     * XPath to access the name of this factory.
+     */
+    public static final String XPATH_NAME        = "@name";
+    /**
+     * XPath to access the description of this artifact factory.
+     */
+    public static final String XPATH_DESCRIPTION = "@description";
+    /**
+     * XPath to access the class name of the artifacts to be build
+     * by this factory.
+     */
+    public static final String XPATH_ARTIFACT    = "@artifact";
+
+    /**
+     * Default description of this factory if none is given by the
+     * configuration.
+     */
+    public static final String DEFAULT_DESCRIPTION =
+        "No description available";
+
+    /**
+     * Class to load if no artifact class is given in the configuration.
+     */
+    public static final String DEFAULT_ARTIFACT =
+        "de.intevation.artifactdatabase.DefaultArtifact";
+
+    /**
+     * The Time to live of the artifacts build by this factory.
+     */
+    protected Long   ttl;
+
+    /**
+     * The name of this factory.
+     */
+    protected String name;
+
+    /**
+     * The description of this factory.
+     */
+    protected String description;
+
+    /**
+     * The class of the artifacts to be build by this factory.
+     */
+    protected Class  artifactClass;
+
+    /**
+     * Default constructor.
+     */
+    public DefaultArtifactFactory() {
+    }
+
+    public String getName() {
+        return name;
+    }
+
+    public String getDescription() {
+        return description;
+    }
+
+    public Artifact createArtifact(
+        String        identifier,
+        GlobalContext context,
+        CallMeta      callMeta,
+        Document      data
+    ) {
+        try {
+            Artifact artifact =
+                (Artifact)artifactClass.newInstance();
+
+            artifact.setup(identifier, this, context, callMeta, data);
+
+            return artifact;
+        }
+        catch (InstantiationException ie) {
+            logger.error(ie.getLocalizedMessage(), ie);
+        }
+        catch (IllegalAccessException iae) {
+            logger.error(iae.getLocalizedMessage(), iae);
+        }
+        catch (ClassCastException cce) {
+            logger.error(cce.getLocalizedMessage(), cce);
+        }
+
+        return null;
+    }
+
+    public void setup(Document document, Node factoryNode) {
+
+        String ttlString = Config.getStringXPath(factoryNode, XPATH_TTL);
+        if (ttlString != null) {
+            try {
+                ttl = Long.valueOf(ttlString);
+            }
+            catch (NumberFormatException nfe) {
+                logger.warn("'" + ttlString + "' is not an integer.");
+            }
+        }
+
+        description = Config.getStringXPath(
+            factoryNode, XPATH_DESCRIPTION, DEFAULT_DESCRIPTION);
+
+        name = Config.getStringXPath(
+            factoryNode, XPATH_NAME, toString());
+
+        String artifact = Config.getStringXPath(
+            factoryNode, XPATH_ARTIFACT, DEFAULT_ARTIFACT);
+
+        try {
+            artifactClass = Class.forName(artifact);
+        }
+        catch (ClassNotFoundException cnfe) {
+            logger.error(cnfe.getLocalizedMessage(), cnfe);
+        }
+
+        if (artifactClass == null) {
+            artifactClass = DefaultArtifact.class;
+        }
+    }
+
+    public Long timeToLiveUntouched(Artifact artifact, Object context) {
+        return ttl;
+    }
+
+    public ArtifactSerializer getSerializer() {
+        return DefaultArtifactSerializer.INSTANCE;
+    }
+}
+// vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :