1 files changed, 27 insertions, 7 deletions
diff --git a/src/de/lmu/ifi/dbs/elki/index/tree/spatial/SpatialDirectoryEntry.java b/src/de/lmu/ifi/dbs/elki/index/tree/spatial/SpatialDirectoryEntry.java
index cf83a1a2..9833e5b5 100644
--- a/src/de/lmu/ifi/dbs/elki/index/tree/spatial/SpatialDirectoryEntry.java
+++ b/src/de/lmu/ifi/dbs/elki/index/tree/spatial/SpatialDirectoryEntry.java
@@ -4,7 +4,7 @@ package de.lmu.ifi.dbs.elki.index.tree.spatial;
  This file is part of ELKI:
  Environment for Developing KDD-Applications Supported by Index-Structures
 
- Copyright (C) 2011
+ Copyright (C) 2012
  Ludwig-Maximilians-Universität München
  Lehr- und Forschungseinheit für Datenbanksysteme
  ELKI Development Team
@@ -27,7 +27,8 @@ import java.io.IOException;
 import java.io.ObjectInput;
 import java.io.ObjectOutput;
 
-import de.lmu.ifi.dbs.elki.data.HyperBoundingBox;
+import de.lmu.ifi.dbs.elki.data.ModifiableHyperBoundingBox;
+import de.lmu.ifi.dbs.elki.data.spatial.SpatialComparable;
 import de.lmu.ifi.dbs.elki.index.tree.AbstractDirectoryEntry;
 
 /**
@@ -45,7 +46,7 @@ public class SpatialDirectoryEntry extends AbstractDirectoryEntry implements Spa
   /**
    * The minimum bounding rectangle of the underlying spatial node.
    */
-  private HyperBoundingBox mbr;
+  private ModifiableHyperBoundingBox mbr;
 
   /**
    * Empty constructor for serialization purposes.
@@ -60,7 +61,7 @@ public class SpatialDirectoryEntry extends AbstractDirectoryEntry implements Spa
    * @param id the unique id of the underlying spatial node
    * @param mbr the minimum bounding rectangle of the underlying spatial node
    */
-  public SpatialDirectoryEntry(int id, HyperBoundingBox mbr) {
+  public SpatialDirectoryEntry(int id, ModifiableHyperBoundingBox mbr) {
     super(id);
     this.mbr = mbr;
   }
@@ -89,11 +90,20 @@ public class SpatialDirectoryEntry extends AbstractDirectoryEntry implements Spa
   }
 
   /**
+   * Test whether this entry already has an MBR.
+   * 
+   * @return True when an MBR exists.
+   */
+  public boolean hasMBR() {
+    return (this.mbr != null);
+  }
+
+  /**
    * Sets the MBR of this entry.
    * 
    * @param mbr the MBR to be set
    */
-  public void setMBR(HyperBoundingBox mbr) {
+  public void setMBR(ModifiableHyperBoundingBox mbr) {
     this.mbr = mbr;
   }
 
@@ -122,7 +132,17 @@ public class SpatialDirectoryEntry extends AbstractDirectoryEntry implements Spa
   @Override
   public void readExternal(ObjectInput in) throws IOException, ClassNotFoundException {
     super.readExternal(in);
-    this.mbr = new HyperBoundingBox();
+    this.mbr = new ModifiableHyperBoundingBox();
     this.mbr.readExternal(in);
   }
-}
+
+  /**
+   * Extend the MBR of this node.
+   * 
+   * @param responsibleMBR
+   * @return true when the MBR changed
+   */
+  public boolean extendMBR(SpatialComparable responsibleMBR) {
+    return this.mbr.extend(responsibleMBR);
+  }
+}
+\ No newline at end of file