Import Debian changes 0.5.0~beta2-1

elki (0.5.0~beta2-1) unstable; urgency=low

  * New upstream beta release.
  * Needs GNU Trove 3, in NEW.
  * Build with OpenJDK7, as OpenJDK6 complains.

elki (0.5.0~beta1-1) unstable; urgency=low

  * New upstream beta release.
  * Needs GNU Trove 3, not yet in Debian (private package)
  * Build with OpenJDK7, as OpenJDK6 complains.

1 files changed, 75 insertions, 0 deletions

diff --git a/src/de/lmu/ifi/dbs/elki/datasource/filter/SparseVectorFieldFilter.java b/src/de/lmu/ifi/dbs/elki/datasource/filter/SparseVectorFieldFilter.java
new file mode 100644
index 00000000..482fc498
--- /dev/null
+++ b/src/de/lmu/ifi/dbs/elki/datasource/filter/SparseVectorFieldFilter.java
@@ -0,0 +1,75 @@
+package de.lmu.ifi.dbs.elki.datasource.filter;
+/*
+ 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/>.
+ */
+
+import de.lmu.ifi.dbs.elki.data.SparseFloatVector;
+import de.lmu.ifi.dbs.elki.data.type.SimpleTypeInformation;
+import de.lmu.ifi.dbs.elki.data.type.TypeUtil;
+import de.lmu.ifi.dbs.elki.data.type.VectorFieldTypeInformation;
+
+/**
+ * Class that turns sparse float vectors into a proper vector field, by setting
+ * the maximum dimensionality for each vector.
+ * 
+ * @author Erich Schubert
+ */
+public class SparseVectorFieldFilter extends AbstractConversionFilter<SparseFloatVector, SparseFloatVector> {
+  /**
+   * Maximum dimension
+   */
+  int maxdim = -1;
+
+  /**
+   * Constructor.
+   */
+  public SparseVectorFieldFilter() {
+    super();
+  }
+
+  @Override
+  protected boolean prepareStart(SimpleTypeInformation<SparseFloatVector> in) {
+    return true;
+  }
+
+  @Override
+  protected void prepareProcessInstance(SparseFloatVector obj) {
+    maxdim = Math.max(maxdim, obj.getDimensionality());
+  }
+
+  @Override
+  protected SparseFloatVector filterSingleObject(SparseFloatVector obj) {
+    assert(maxdim > 0);
+    obj.setDimensionality(maxdim);
+    return obj;
+  }
+
+  @Override
+  protected SimpleTypeInformation<? super SparseFloatVector> getInputTypeRestriction() {
+    return TypeUtil.SPARSE_FLOAT_FIELD;
+  }
+
+  @Override
+  protected SimpleTypeInformation<? super SparseFloatVector> convertedType(SimpleTypeInformation<SparseFloatVector> in) {
+    return new VectorFieldTypeInformation<SparseFloatVector>(SparseFloatVector.class, maxdim, SparseFloatVector.STATIC);
+  }
+}
\ No newline at end of file