--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/artifacts/src/main/java/org/dive4elements/river/artifacts/access/BedDifferencesAccess.java	Thu Apr 25 15:23:37 2013 +0200
@@ -0,0 +1,53 @@
+package org.dive4elements.river.artifacts.access;
+
+import java.util.Arrays;
+
+import org.apache.log4j.Logger;
+
+import org.dive4elements.artifacts.CallContext;
+import org.dive4elements.river.artifacts.FLYSArtifact;
+import org.dive4elements.river.utils.FLYSUtils;
+import org.dive4elements.river.utils.StringUtil;
+
+
+public class BedDifferencesAccess
+extends RiverAccess
+{
+    private static Logger logger = Logger.getLogger(BedDifferencesAccess.class);
+    private String yearEpoch;
+    private String[] diffs;
+
+    private CallContext context;
+
+    public BedDifferencesAccess(FLYSArtifact artifact, CallContext context) {
+        super(artifact);
+        this.context = context;
+    }
+
+    public String getYearEpoch() {
+        yearEpoch = getString("ye_select");
+        return yearEpoch;
+    }
+
+    public FLYSArtifact[][] getDifferenceArtifacts() {
+        diffs = getString("diffids").split("#");
+        logger.debug("diffs: " + Arrays.toString(diffs));
+        FLYSArtifact[][] artifacts = new FLYSArtifact[diffs.length/2][2];
+        for (int i = 0; i < diffs.length; i += 2) {
+            String diff1 = StringUtil.unbracket(diffs[0 + 2*i]);
+            String diff2 = StringUtil.unbracket(diffs[1 + 2*i]);
+            String[] diff1parts = diff1.split(";");
+            String[] diff2parts = diff2.split(";");
+            logger.debug("creating 2 artifacts." + diff1parts[0] + "; " + diff2parts[0]);
+            artifacts[i][0] = FLYSUtils.getArtifact(diff1parts[0], context);
+            artifacts[i][1] = FLYSUtils.getArtifact(diff2parts[0], context);
+        }
+        return artifacts;
+    }
+
+    public static int getHeightId(FLYSArtifact artifact) {
+        Access a = new Access(artifact);
+        return a.getInteger("height_id");
+    }
+}
+// vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :