org.wkb4j.engine
Class WKBReader

java.lang.Object
  |
  +--org.wkb4j.engine.WKBReader

All Implemented Interfaces:

WKBGeometryTypes

public class WKBReader

extends java.lang.Object

implements WKBGeometryTypes

Creation date: 3 juil. 2002 00:16:50

Version:

$Revision: 1.8 $ $Date: 2003/07/08 21:49:16 $

Author:

David Garnier

Field Summary

protected java.lang.String[]	emptyStringArray
protected static org.apache.log4j.Logger	log

Fields inherited from interface org.wkb4j.engine.WKBGeometryTypes

linearRing, wkbGeometryCollection, wkbLineString, wkbMultiLineString, wkbMultiPoint, wkbMultiPolygon, wkbPoint, wkbPolygon

Constructor Summary

WKBReader()
Constructor for WKBReader.

Method Summary

private void	invertInt(byte[] record, int offset)
private void	invertLong(byte[] record, int offset)
private byte[]	parseNDRRecord(byte[] record)
void	readData(java.sql.Connection dbConn, java.lang.String completeSQLQuery, java.util.List wordList, org.wkb4j.engine.WKBParser parser) Fetches the binary data from the database and pass each record to the WKBParser with the submitted WKBFactory.
void	readData(java.sql.Connection dbConn, java.lang.String completeSQLQuery, org.wkb4j.engine.WKBParser parser) Fetches the binary data from the database and pass each record to the WKBParser with the submitted WKBFactory.
void	readDataWithPartialQuery(java.sql.Connection dbConn, java.lang.String geocolumn, java.lang.String partialSQLQuery, org.wkb4j.engine.WKBParser parser) Fetches the binary data from the database and pass each record to the submitted WKBParser.
void	readDataWithWhereClause(java.sql.Connection dbConn, java.lang.String geocolumn, java.lang.String geotable, java.lang.String whereClause, org.wkb4j.engine.WKBParser parser) Fetches the binary data from the database and pass each record to the submitted WKBParser.
protected java.lang.String[]	sanitizeWords(java.util.List words)

Methods inherited from class java.lang.Object

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

Field Detail

log

protected static org.apache.log4j.Logger log

emptyStringArray

protected java.lang.String[] emptyStringArray

Constructor Detail

WKBReader

public WKBReader()

Constructor for WKBReader.

Method Detail

sanitizeWords

protected java.lang.String[] sanitizeWords(java.util.List words)

readDataWithPartialQuery

public void readDataWithPartialQuery(java.sql.Connection dbConn,
                                     java.lang.String geocolumn,
                                     java.lang.String partialSQLQuery,
                                     org.wkb4j.engine.WKBParser parser)

Fetches the binary data from the database and pass each record to the submitted WKBParser. The partialSQLQuery should contain a partial SQL query. The data will be fetched from the geocolumn name.
Example of an correct value for partialSQLQuery: "FROM geotable WHERE id BETWEEN 125 AND 168"

Parameters:

dbConn -

partialSQLQuery -

parser -

readDataWithWhereClause

public void readDataWithWhereClause(java.sql.Connection dbConn,
                                    java.lang.String geocolumn,
                                    java.lang.String geotable,
                                    java.lang.String whereClause,
                                    org.wkb4j.engine.WKBParser parser)

Fetches the binary data from the database and pass each record to the submitted WKBParser. The whereClause should contain a valid SQL where clause, without the where at the beginning. If whereClause is null or empty, it is ignored, causing all the records in the specified geotable to be loaded. The data will be fetched from the geocolumn name.
Example of an correct value for partialSQLQuery: "FROM geotable WHERE id BETWEEN 125 AND 168"

Parameters:

dbConn -

parser -

readData

public void readData(java.sql.Connection dbConn,
                     java.lang.String completeSQLQuery,
                     java.util.List wordList,
                     org.wkb4j.engine.WKBParser parser)

Fetches the binary data from the database and pass each record to the WKBParser with the submitted WKBFactory. The submitted query must creates at least a column named "srid" holding the SRID and a column named "wkb" holding the WKB data.
Example of an correct value for completeSQLQuery: "SELECT srid(geocolumn) AS srid, asbinary(geocolumn,'XDR') AS wkb FROM geotable WHERE id BETWEEN 125 AND 168"

Parameters:

dbConn -

completeSQLQuery -

wordList -

parser -

readData

public void readData(java.sql.Connection dbConn,
                     java.lang.String completeSQLQuery,
                     org.wkb4j.engine.WKBParser parser)

Fetches the binary data from the database and pass each record to the WKBParser with the submitted WKBFactory. The submitted query must creates at least a column named "srid" holding the SRID and a column named "wkb" holding the WKB data.
Example: "SELECT srid(geocolumn) AS srid, asbinary(geocolumn,'XDR') AS wkb FROM geotable WHERE id BETWEEN 125 AND 168"

Parameters:

dbConn -

completeSQLQuery -

parser -

parseNDRRecord

private byte[] parseNDRRecord(byte[] record)

invertInt

private void invertInt(byte[] record,
                       int offset)

invertLong

private void invertLong(byte[] record,
                        int offset)