1 files changed, 70 insertions, 0 deletions
diff --git a/src/de/lmu/ifi/dbs/elki/database/ids/DoubleDBIDListIter.java b/src/de/lmu/ifi/dbs/elki/database/ids/DoubleDBIDListIter.java
new file mode 100644
index 00000000..d5b0e4f7
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+++ b/src/de/lmu/ifi/dbs/elki/database/ids/DoubleDBIDListIter.java
@@ -0,0 +1,70 @@
+package de.lmu.ifi.dbs.elki.database.ids;
+
+
+/*
+ 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/>.
+ */
+
+/**
+ * Iterator over double-DBID pairs results.
+ * 
+ * There is no getter for the DBID, as this implements
+ * {@link de.lmu.ifi.dbs.elki.database.ids.DBIDRef}.
+ * 
+ * @author Erich Schubert
+ * 
+ * @apiviz.landmark
+ * 
+ * @apiviz.has DoubleDBIDPair
+ */
+public interface DoubleDBIDListIter extends DBIDArrayIter {
+  /**
+   * Get the double value
+   * 
+   * @return double value
+   */
+  public double doubleValue();
+
+  /**
+   * Materialize an object pair.
+   * 
+   * Note: currently, this will create a <em>new object</em>. In order to avoid
+   * the garbage collection overhead, it is preferable to use
+   * {@code #doubleValue()} and exploit that the iterator itself is a
+   * {@code DBIDRef} reference.
+   * 
+   * @return object pair
+   */
+  public DoubleDBIDPair getPair();
+
+  @Override
+  DoubleDBIDListIter advance();
+
+  @Override
+  DoubleDBIDListIter advance(int count);
+
+  @Override
+  DoubleDBIDListIter retract();
+
+  @Override
+  DoubleDBIDListIter seek(int off);
+}
+\ No newline at end of file