1 files changed, 121 insertions, 0 deletions
diff --git a/src/de/lmu/ifi/dbs/elki/database/datastore/memory/ArrayDoubleStore.java b/src/de/lmu/ifi/dbs/elki/database/datastore/memory/ArrayDoubleStore.java
new file mode 100644
index 00000000..433547a5
--- /dev/null
+++ b/src/de/lmu/ifi/dbs/elki/database/datastore/memory/ArrayDoubleStore.java
@@ -0,0 +1,121 @@
+package de.lmu.ifi.dbs.elki.database.datastore.memory;
+
+/*
+ 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.database.datastore.DataStoreIDMap;
+import de.lmu.ifi.dbs.elki.database.datastore.WritableDoubleDataStore;
+import de.lmu.ifi.dbs.elki.database.ids.DBID;
+
+/**
+ * A class to answer representation queries using the stored Array.
+ * 
+ * @author Erich Schubert
+ * 
+ * @apiviz.composedOf de.lmu.ifi.dbs.elki.database.datastore.DataStoreIDMap
+ */
+public class ArrayDoubleStore implements WritableDoubleDataStore {
+  /**
+   * Data array
+   */
+  private double[] data;
+
+  /**
+   * DBID to index map
+   */
+  private DataStoreIDMap idmap;
+
+  /**
+   * Constructor.
+   * 
+   * @param size Size
+   * @param idmap ID map
+   */
+  public ArrayDoubleStore(int size, DataStoreIDMap idmap) {
+    super();
+    this.data = new double[size];
+    this.idmap = idmap;
+  }
+
+  @Override
+  @Deprecated
+  public Double get(DBID id) {
+    try {
+      return data[idmap.map(id)];
+    }
+    catch(ArrayIndexOutOfBoundsException e) {
+      return null;
+    }
+  }
+
+  @Override
+  @Deprecated
+  public Double put(DBID id, Double value) {
+    final int off = idmap.map(id);
+    double ret = data[off];
+    data[off] = value;
+    return ret;
+  }
+  
+  @Override
+  public double doubleValue(DBID id) {
+    return data[idmap.map(id)];
+  }
+
+  @Override
+  public double putDouble(DBID id, double value) {
+    final int off = idmap.map(id);
+    final double ret = data[off];
+    data[off] = value;
+    return ret;
+  }
+
+  @Override
+  public double put(DBID id, double value) {
+    final int off = idmap.map(id);
+    final double ret = data[off];
+    data[off] = value;
+    return ret;
+  }
+
+  @Override
+  public void destroy() {
+    data = null;
+    idmap = null;
+  }
+
+  @Override
+  public void delete(DBID id) {
+    throw new UnsupportedOperationException("Can't delete from a static array storage.");
+  }
+
+  @Override
+  public String getLongName() {
+    return "raw";
+  }
+
+  @Override
+  public String getShortName() {
+    return "raw";
+  }
+}
+\ No newline at end of file