de.lmu.ifi.dbs.elki.index.tree.spatial.rstarvariants.rstar

Class RStarTree

java.lang.Object

de.lmu.ifi.dbs.elki.index.tree.IndexTree<N,E>

de.lmu.ifi.dbs.elki.index.tree.spatial.SpatialIndexTree<N,E>

de.lmu.ifi.dbs.elki.index.tree.spatial.rstarvariants.AbstractRStarTree<N,E>

de.lmu.ifi.dbs.elki.index.tree.spatial.rstarvariants.NonFlatRStarTree<RStarTreeNode,SpatialEntry>

de.lmu.ifi.dbs.elki.index.tree.spatial.rstarvariants.rstar.RStarTree

Direct Known Subclasses:

RStarTreeIndex

@Title(value="R*-Tree")
@Description(value="Balanced index structure based on bounding rectangles.")
@Reference(authors="N. Beckmann, H.-P. Kriegel, R. Schneider, B. Seeger",
           title="The R*-tree: an efficient and robust access method for points and rectangles",
           booktitle="Proceedings of the 1990 ACM SIGMOD International Conference on Management of Data, Atlantic City, NJ, May 23-25, 1990",
           url="http://dx.doi.org/10.1145/93597.98741")
public class RStarTree
extends NonFlatRStarTree<RStarTreeNode,SpatialEntry>

RStarTree is a spatial index structure based on the concepts of the R*-Tree. Apart from organizing the objects it also provides several methods to search for certain object in the structure and ensures persistence.

Field Summary

Fields

Modifier and Type	Field and Description
private static Logging	logger The logger for this class.

Fields inherited from class de.lmu.ifi.dbs.elki.index.tree.spatial.rstarvariants.AbstractRStarTree

bulkSplitter, distanceCalcs, extraIntegrityChecks, height, insertionStrategy, nodeSplitter, reinsertions

Fields inherited from class de.lmu.ifi.dbs.elki.index.tree.IndexTree

dirCapacity, dirMinimum, initialized, leafCapacity, leafMinimum

Constructor Summary

Constructors

Constructor and Description
RStarTree(PageFile<RStarTreeNode> pagefile, BulkSplit bulkSplitter, InsertionStrategy insertionStrategy) Constructor.

Method Summary

Methods

Modifier and Type	Method and Description
protected SpatialEntry	createNewDirectoryEntry(RStarTreeNode node) Creates a new directory entry representing the specified node.
protected RStarTreeNode	createNewDirectoryNode() Creates a new directory node with the specified capacity.
protected RStarTreeNode	createNewLeafNode() Creates a new leaf node with the specified capacity.
protected SpatialEntry	createRootEntry() Creates an entry representing the root node.
protected Logging	getLogger() Get the (STATIC) logger for this class.

Methods inherited from class de.lmu.ifi.dbs.elki.index.tree.spatial.rstarvariants.NonFlatRStarTree

bulkLoad, computeHeight, createEmptyRoot, hasOverflow, hasUnderflow

Methods inherited from class de.lmu.ifi.dbs.elki.index.tree.spatial.rstarvariants.AbstractRStarTree

adjustTree, canBulkLoad, choosePath, clearReinsertions, containedTest, createBulkLeafNodes, createNewRoot, deletePath, doExtraIntegrityChecks, findPathToObject, getHeight, getLeaves, initializeCapacities, initializeFromFile, insertDirectoryEntry, insertLeaf, insertLeafEntry, reInsert, setHeight, toString

Methods inherited from class de.lmu.ifi.dbs.elki.index.tree.IndexTree

createHeader, deleteNode, getFile, getNode, getNode, getPageFileStatistics, getPageID, getPageSize, getRoot, getRootEntry, getRootID, getRootPath, initialize, initialize, isRoot, postDelete, preInsert, writeNode

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Field Detail

logger

private static final Logging logger

The logger for this class.

Constructor Detail

RStarTree

public RStarTree(PageFile<RStarTreeNode> pagefile,
         BulkSplit bulkSplitter,
         InsertionStrategy insertionStrategy)

Constructor.

Parameters:

pagefile - Page file

bulkSplitter - bulk load strategy

insertionStrategy - the strategy to find the insertion child

Method Detail

createRootEntry

protected SpatialEntry createRootEntry()

Description copied from class: IndexTree

Creates an entry representing the root node.

Specified by:

createRootEntry in class IndexTree<RStarTreeNode,SpatialEntry>

Returns:

an entry representing the root node

createNewDirectoryEntry

protected SpatialEntry createNewDirectoryEntry(RStarTreeNode node)

Description copied from class: AbstractRStarTree

Creates a new directory entry representing the specified node.

Specified by:

createNewDirectoryEntry in class AbstractRStarTree<RStarTreeNode,SpatialEntry>

Parameters:

node - the node to be represented by the new entry

Returns:

the newly created directory entry

createNewLeafNode

protected RStarTreeNode createNewLeafNode()

Creates a new leaf node with the specified capacity.

Specified by:

createNewLeafNode in class IndexTree<RStarTreeNode,SpatialEntry>

Returns:

a new leaf node

createNewDirectoryNode

protected RStarTreeNode createNewDirectoryNode()

Creates a new directory node with the specified capacity.

Specified by:

createNewDirectoryNode in class IndexTree<RStarTreeNode,SpatialEntry>

Returns:

a new directory node

getLogger

protected Logging getLogger()

Description copied from class: IndexTree

Get the (STATIC) logger for this class.

Specified by:

getLogger in class IndexTree<RStarTreeNode,SpatialEntry>

Returns:

the static logger