org.deegree.io.rtree

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Java Source Code / Java Documentation » GIS » deegree » org.deegree.io.rtree 
org.deegree.io.rtree
Java Source File NameTypeComment
HyperBoundingBox.javaClass

HyperBoundingBox implementing a bounding box object in the multidimensional space.

HyperPoint.javaClass

Point in multidimensional space.

LeafNode.javaClass

Implementation of a LeafNode.

MemoryPageFile.javaClass

A memory based implementation of a PageFile.
Implemented as a Hashtable with keys representing the page file numbers of the saved nodes.

Node.javaClass

Abstract class for common implementation and definition of abstract methods for both concrete classes LeafNode and NoneLeafNode.

NoneLeafNode.javaClass

Implementation of a NoneLeafNode.

PageFile.javaClass

Abstract class implementing general methods of a PageFile.

PageFileException.javaClass
PersistentPageFile.javaClass

A persistent implementation of a PageFile implemented based on a RandomAccesFile.

Structure of the File


-- Header --
int pageFileVersion
int dimension
int capacity = maxLoad + 1 for Overflow
int minimum


-- Body --
a sequence of page one after another with:
int typ - 1 LeafNode 2 NoneLeafNode
int place - index of entry of this node in father node
int counter - current used space in the node
int parentNode - page number of father node
int pageNumber - own page number
- for(i = 0; i < capacity; i++)
int data Entry i - page number of childnode or object ID of data entry
- always dependend on dimension = x
double pMin x.Dimension - pMin of the common HyperBoundingBox
double pMax x.Dimension - pMax of the common HyperBoundingBox
- for(i = 0; i < capacity; i++)
double pMin x.Dimension - pMin HyperBoundingBox for Entry i
double pMax x.Dimension - pMax HyperBoundingBox for Entry i


int entspr.

RTree.javaClass
Implementation of a R-Tree after the algorithms of Antonio Guttman.
RTreeException.javaClass

The common exception thrown by problems during the rtree methods.

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