1 files changed, 51 insertions, 0 deletions
diff --git a/src/de/lmu/ifi/dbs/elki/distance/distancefunction/external/DistanceCacheWriter.java b/src/de/lmu/ifi/dbs/elki/distance/distancefunction/external/DistanceCacheWriter.java
new file mode 100644
index 00000000..3457d335
--- /dev/null
+++ b/src/de/lmu/ifi/dbs/elki/distance/distancefunction/external/DistanceCacheWriter.java
@@ -0,0 +1,51 @@
+package de.lmu.ifi.dbs.elki.distance.distancefunction.external;
+
+/*
+ This file is part of ELKI:
+ Environment for Developing KDD-Applications Supported by Index-Structures
+
+ Copyright (C) 2014
+ Ludwig-Maximilians-Universität München
+ Lehr- und Forschungseinheit für Datenbanksysteme
+ ELKI Development Team
+
+ This program is free software: you can redistribute it and/or modify
+ it under the terms of the GNU Affero General Public License as published by
+ the Free Software Foundation, either version 3 of the License, or
+ (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ GNU Affero General Public License for more details.
+
+ You should have received a copy of the GNU Affero General Public License
+ along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+/**
+ * Interface to plug in the cache storage into the parser.
+ * 
+ * @author Erich Schubert
+ */
+public interface DistanceCacheWriter {
+  /**
+   * Puts the specified distance value for the given ids to the distance cache.
+   * 
+   * @param id1 the first id offset
+   * @param id2 the second id offset
+   * @param distance the distance value
+   */
+  void put(int id1, int id2, double distance);
+
+  /**
+   * Returns <tt>true</tt> if the specified distance cache contains a distance
+   * value for the specified ids.
+   * 
+   * @param id1 the first id offset
+   * @param id2 the second id offset
+   * @return <tt>true</tt> if this cache contains a distance value for the
+   *         specified ids, false otherwise
+   */
+  boolean containsKey(int id1, int id2);
+}
+\ No newline at end of file