--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/gnv-artifacts/src/main/java/de/intevation/gnv/timeseries/gap/TimeGap.java	Fri Sep 28 12:14:00 2012 +0200
@@ -0,0 +1,57 @@
+/*
+ * 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.gnv.timeseries.gap;
+
+import java.io.Serializable;
+
+/**
+ * A class representing a timegap. <code>TimeGap</code>s are used in timeseries
+ * charts to identify gaps taking account for the resolution of the x-axis
+ * range.
+ *
+ * @author <a href="mailto:tim.englich@intevation.de">Tim Englich</a>
+ */
+public interface TimeGap extends Serializable {
+
+    public final static String TIME_UNIT_MINUTE = "m";
+    public final static String TIME_UNIT_HOUR = "h";
+    public final static String TIME_UNIT_DAY = "D";
+    public final static String TIME_UNIT_WEEK = "W";
+    public final static String TIME_UNIT_MONTH = "M";
+    public final static String TIME_UNIT_YEAR = "Y";
+
+    public final static long  MINUTE_IN_MILLIS = 60 * 1000;
+    public final static long  HOUR_IN_MILLIS = 60 * MINUTE_IN_MILLIS;
+    public final static long  DAY_IN_MILLIS = 24 * HOUR_IN_MILLIS;
+    public final static long  WEEK_IN_MILLIS = 7 * DAY_IN_MILLIS;
+
+
+    /**
+     * Returns the Lookup-Key for the TimeGap
+     *
+     * @return the timegap key.
+     */
+    int getKey();
+
+    /**
+     * Returns the Value of the TimeValue in the Unit which is also given.
+     *
+     * @return the timegap value.
+     */
+    int getValue();
+
+    /**
+     * Returns the Unit of the Timegap (e.g. Minutes, Hours, Days, Weeks, Months, Years)
+     *
+     * @return the timegap unit.
+     */
+    String getUnit();
+
+}
+// vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :