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Diffstat (limited to 'src/de/lmu/ifi/dbs/elki/utilities/iterator/ArrayIter.java')
-rw-r--r-- | src/de/lmu/ifi/dbs/elki/utilities/iterator/ArrayIter.java | 59 |
1 files changed, 59 insertions, 0 deletions
diff --git a/src/de/lmu/ifi/dbs/elki/utilities/iterator/ArrayIter.java b/src/de/lmu/ifi/dbs/elki/utilities/iterator/ArrayIter.java new file mode 100644 index 00000000..fb6601d1 --- /dev/null +++ b/src/de/lmu/ifi/dbs/elki/utilities/iterator/ArrayIter.java @@ -0,0 +1,59 @@ +package de.lmu.ifi.dbs.elki.utilities.iterator; + +/* + This file is part of ELKI: + Environment for Developing KDD-Applications Supported by Index-Structures + + Copyright (C) 2012 + 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/>. + */ + +/** + * Array iterators can also go backwards and seek. + * + * @author Erich Schubert + * + * @apiviz.landmark + */ +public interface ArrayIter extends Iter { + /** + * Get current iterator offset. + * + * @return Iterator position + */ + public int getOffset(); + + /** + * Moves the iterator forward or backward by the given offset. + * + * @param count offset to move forward or backwards + */ + public void advance(int count); + + /** + * Moves the iterator backward to the previous entry. + */ + public void retract(); + + /** + * Moves the iterator to the given position + * + * @param off Seek offset + */ + public void seek(int off); +}
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