oracle.spatial.util
Class ShapefileReaderJGeom

java.lang.Object
oracle.spatial.util.ShapefileReaderJGeom

public class ShapefileReaderJGeom

extends java.lang.Object

Field Summary

static int	AV_MULTIPOINT
static int	AV_MULTIPOINTM
static int	AV_MULTIPOINTZ
static int	AV_NULL
static int	AV_POINT
static int	AV_POINTM
static int	AV_POINTZ
static int	AV_POLYGON
static int	AV_POLYGONM
static int	AV_POLYGONZ
static int	AV_POLYLINE
static int	AV_POLYLINEM
static int	AV_POLYLINEZ
protected int	bufferLen
protected int	cnt
protected oracle.spatial.util.ShapefileHdr	idxFileHdr
protected java.io.RandomAccessFile	idxFIS
protected static OracleConnection	m_conn
protected oracle.spatial.util.ShapefileHdr	mainFileHdr
protected java.io.RandomAccessFile	mainFIS
protected double	measureMax
protected double	measureMin
protected java.lang.String	namePrefix
protected int	nRecords
protected double[]	partBuffer
protected int	partBufferLen
protected byte[]	recBuffer
protected int	type
protected double	zMax
protected double	zMin

Constructor Summary

ShapefileReaderJGeom(java.lang.String name)
construct an object out of the specified shapefile name.

Method Summary

void	closeShapefile() close this shapefile.
static JGeometry	getGeometry(byte[] recBuffer, int srid)
protected static JGeometry	getGeometry(byte[] recBuffer, int type, int off, int srid)
byte[]	getGeometryBytes(int nth) retrieve nth shape record and return it as a byte array.
double	getMaxMeasure() return the maximum Measure value in file.
double	getMaxZ() return the maximum Z value in file.
double	getMinMeasure() return the minimum Measure value in file.
double	getMinZ() return the minimum Z value in file.
static int	getShpDims(int type, double maxM)
int	getShpFileType() return the Shape Type in the file.
protected long	idxRecordOffset(int nth) make an double out of the byte array starting at offset 'off'.
protected boolean	mainRecordOffset(int nth, oracle.spatial.util.IndexRecord idxRec)
protected static double	makeDoubleBigEndian(byte[] b, int off)
protected static double	makeDoubleLittleEndian(byte[] b, int off)
protected static int	makeIntBigEndian(byte[] b, int off)
protected static int	makeIntLittleEndian(byte[] b, int off)
protected static JGeometry	makeMPoint(byte[] b, int off, int srid)
protected static JGeometry	makeMPointZ(byte[] b, int off, int srid)
protected static JGeometry	makePoint(byte[] b, int off, int srid)
protected static JGeometry	makePointM(byte[] b, int off, int srid)
protected static JGeometry	makePointZ(byte[] b, int off, int srid)
protected static JGeometry	makePoly(byte[] b, int type, int off, int srid)
protected static JGeometry	makePolyM(byte[] b, int type, int off, int srid)
protected static JGeometry	makePolyZ(byte[] b, int type, int off, int srid)
protected static JGeometry	makePolyZM(byte[] b, int type, int off, int srid, int[] parts, int numParts, int numPoints, int zArrayOff, int mMaxOff)
int	numRecords() return the number of shape records in the file.
protected void	openShapefile(java.lang.String name) open a shapefile with the given name.
static void	setOracleConnection(OracleConnection _conn)
static double	signedArea2(JGeometry g)
static void	swapBytes(byte[] buf, int offset, int len)

Methods inherited from class java.lang.Object

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

Field Detail

m_conn

protected static OracleConnection m_conn

AV_NULL

public static final int AV_NULL

See Also:

Constant Field Values

AV_POINT

public static final int AV_POINT

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Constant Field Values

AV_POLYLINE

public static final int AV_POLYLINE

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Constant Field Values

AV_POLYGON

public static final int AV_POLYGON

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Constant Field Values

AV_MULTIPOINT

public static final int AV_MULTIPOINT

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Constant Field Values

AV_POINTZ

public static final int AV_POINTZ

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Constant Field Values

AV_POLYLINEZ

public static final int AV_POLYLINEZ

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Constant Field Values

AV_POLYGONZ

public static final int AV_POLYGONZ

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Constant Field Values

AV_MULTIPOINTZ

public static final int AV_MULTIPOINTZ

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Constant Field Values

AV_POINTM

public static final int AV_POINTM

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Constant Field Values

AV_POLYLINEM

public static final int AV_POLYLINEM

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Constant Field Values

AV_POLYGONM

public static final int AV_POLYGONM

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Constant Field Values

AV_MULTIPOINTM

public static final int AV_MULTIPOINTM

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Constant Field Values

nRecords

protected int nRecords

type

protected int type

zMax

protected double zMax

zMin

protected double zMin

measureMax

protected double measureMax

measureMin

protected double measureMin

recBuffer

protected byte[] recBuffer

partBuffer

protected double[] partBuffer

bufferLen

protected int bufferLen

partBufferLen

protected int partBufferLen

cnt

protected int cnt

namePrefix

protected java.lang.String namePrefix

mainFileHdr

protected oracle.spatial.util.ShapefileHdr mainFileHdr

idxFileHdr

protected oracle.spatial.util.ShapefileHdr idxFileHdr

mainFIS

protected java.io.RandomAccessFile mainFIS

idxFIS

protected java.io.RandomAccessFile idxFIS

Constructor Detail

ShapefileReaderJGeom

public ShapefileReaderJGeom(java.lang.String name)
                     throws java.io.IOException

construct an object out of the specified shapefile name.

Method Detail

getShpDims

public static int getShpDims(int type,
                             double maxM)
                      throws java.lang.Exception

Throws:

java.lang.Exception

setOracleConnection

public static void setOracleConnection(OracleConnection _conn)

getGeometry

public static JGeometry getGeometry(byte[] recBuffer,
                                    int srid)
                             throws java.lang.Exception

Throws:

java.lang.Exception

getGeometry

protected static JGeometry getGeometry(byte[] recBuffer,
                                       int type,
                                       int off,
                                       int srid)
                                throws java.lang.Exception

Throws:

java.lang.Exception

makePoint

protected static JGeometry makePoint(byte[] b,
                                     int off,
                                     int srid)
                              throws java.io.IOException

Throws:

java.io.IOException

makePointZ

protected static JGeometry makePointZ(byte[] b,
                                      int off,
                                      int srid)
                               throws java.io.IOException

Throws:

java.io.IOException

makePointM

protected static JGeometry makePointM(byte[] b,
                                      int off,
                                      int srid)
                               throws java.io.IOException

Throws:

java.io.IOException

makeMPoint

protected static JGeometry makeMPoint(byte[] b,
                                      int off,
                                      int srid)
                               throws java.io.IOException

Throws:

java.io.IOException

makeMPointZ

protected static JGeometry makeMPointZ(byte[] b,
                                       int off,
                                       int srid)
                                throws java.io.IOException

Throws:

java.io.IOException

signedArea2

public static double signedArea2(JGeometry g)

makePoly

protected static JGeometry makePoly(byte[] b,
                                    int type,
                                    int off,
                                    int srid)
                             throws java.io.IOException

Throws:

java.io.IOException

makePolyZ

protected static JGeometry makePolyZ(byte[] b,
                                     int type,
                                     int off,
                                     int srid)
                              throws java.io.IOException

Throws:

java.io.IOException

makePolyZM

protected static JGeometry makePolyZM(byte[] b,
                                      int type,
                                      int off,
                                      int srid,
                                      int[] parts,
                                      int numParts,
                                      int numPoints,
                                      int zArrayOff,
                                      int mMaxOff)
                               throws java.io.IOException

Throws:

java.io.IOException

makePolyM

protected static JGeometry makePolyM(byte[] b,
                                     int type,
                                     int off,
                                     int srid)
                              throws java.io.IOException

Throws:

java.io.IOException

swapBytes

public static void swapBytes(byte[] buf,
                             int offset,
                             int len)

makeIntBigEndian

protected static int makeIntBigEndian(byte[] b,
                                      int off)

makeIntLittleEndian

protected static int makeIntLittleEndian(byte[] b,
                                         int off)

makeDoubleBigEndian

protected static double makeDoubleBigEndian(byte[] b,
                                            int off)

makeDoubleLittleEndian

protected static double makeDoubleLittleEndian(byte[] b,
                                               int off)

openShapefile

protected void openShapefile(java.lang.String name)
                      throws java.io.IOException

open a shapefile with the given name. ready to fetch individual shape records upon success return.

Throws:

java.io.IOException

closeShapefile

public void closeShapefile()
                    throws java.io.IOException

close this shapefile.

Throws:

java.io.IOException

getGeometryBytes

public byte[] getGeometryBytes(int nth)
                        throws java.io.IOException

retrieve nth shape record and return it as a byte array.

Throws:

java.io.IOException

idxRecordOffset

protected long idxRecordOffset(int nth)

make an double out of the byte array starting at offset 'off'. Assumming the bytes are laid out in big-endian order.

mainRecordOffset

protected boolean mainRecordOffset(int nth,
                                   oracle.spatial.util.IndexRecord idxRec)

numRecords

public int numRecords()

return the number of shape records in the file.

getShpFileType

public int getShpFileType()

return the Shape Type in the file.

getMaxMeasure

public double getMaxMeasure()

return the maximum Measure value in file.

getMinMeasure

public double getMinMeasure()

return the minimum Measure value in file.

getMaxZ

public double getMaxZ()

return the maximum Z value in file.

getMinZ

public double getMinZ()

return the minimum Z value in file.