com.vividsolutions.jts.index.strtree

Class SIRtree

java.lang.Object

com.vividsolutions.jts.index.strtree.AbstractSTRtree

com.vividsolutions.jts.index.strtree.SIRtree

All Implemented Interfaces:

Serializable

public class SIRtree
extends AbstractSTRtree

One-dimensional version of an STR-packed R-tree. SIR stands for "Sort-Interval-Recursive". STR-packed R-trees are described in: P. Rigaux, Michel Scholl and Agnes Voisard. Spatial Databases With Application To GIS. Morgan Kaufmann, San Francisco, 2002.

This class is thread-safe. Building the tree is synchronized, and querying is stateless.

Version:

1.7

See Also:

STRtree, Serialized Form

Nested Class Summary

Nested classes/interfaces inherited from class com.vividsolutions.jts.index.strtree.AbstractSTRtree

AbstractSTRtree.IntersectsOp

Field Summary

Fields inherited from class com.vividsolutions.jts.index.strtree.AbstractSTRtree

root

Constructor Summary

Constructors

Constructor and Description
SIRtree() Constructs an SIRtree with the default node capacity.
SIRtree(int nodeCapacity) Constructs an SIRtree with the given maximum number of child nodes that a node may have

Method Summary

Methods

Modifier and Type	Method and Description
protected AbstractNode	createNode(int level)
protected Comparator	getComparator()
protected AbstractSTRtree.IntersectsOp	getIntersectsOp()
void	insert(double x1, double x2, Object item) Inserts an item having the given bounds into the tree.
List	query(double x) Returns items whose bounds intersect the given value.
List	query(double x1, double x2) Returns items whose bounds intersect the given bounds.

Methods inherited from class com.vividsolutions.jts.index.strtree.AbstractSTRtree

boundablesAtLevel, build, compareDoubles, createParentBoundables, depth, depth, getNodeCapacity, getRoot, insert, isEmpty, itemsTree, lastNode, query, query, remove, size, size

Methods inherited from class java.lang.Object

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

Constructor Detail

SIRtree

public SIRtree()

Constructs an SIRtree with the default node capacity.

SIRtree

public SIRtree(int nodeCapacity)

Constructs an SIRtree with the given maximum number of child nodes that a node may have

Method Detail

createNode

protected AbstractNode createNode(int level)

Specified by:

createNode in class AbstractSTRtree

insert

public void insert(double x1,
          double x2,
          Object item)

Inserts an item having the given bounds into the tree.

query

public List query(double x)

Returns items whose bounds intersect the given value.

query

public List query(double x1,
         double x2)

Returns items whose bounds intersect the given bounds.

Parameters:

x1 - possibly equal to x2

getIntersectsOp

protected AbstractSTRtree.IntersectsOp getIntersectsOp()

Specified by:

getIntersectsOp in class AbstractSTRtree

Returns:

a test for intersection between two bounds, necessary because subclasses of AbstractSTRtree have different implementations of bounds.

See Also:

AbstractSTRtree.IntersectsOp

getComparator

protected Comparator getComparator()

Specified by:

getComparator in class AbstractSTRtree