de.fhg.igd.earth.model.input.shapefile
Class ESRIRecord

java.lang.Object
  de.fhg.igd.earth.model.input.shapefile.ShapeUtils
      de.fhg.igd.earth.model.input.shapefile.ESRIRecord

Direct Known Subclasses:

ESRIMultiPointRecord, ESRIPointRecord, ESRIPolygonRecord

public abstract class ESRIRecord

extends ShapeUtils

Title : Earth Copyright : Copyright (c) 2001 Organisation : IGD FhG

Version:

: 1.0

Author:

: Werner Beutel

Field Summary

int	contentLength The length of the data portion of this record.
int	recordNumber The ordinal of this record.

Fields inherited from class de.fhg.igd.earth.model.input.shapefile.ShapeUtils

SHAPE_FILE_HEADER_LENGTH, SHAPE_FILE_HEADER_LENGTH_DB, SHAPE_FILE_RECORD_HEADER_LENGTH, SHAPE_TYPE_ARC, SHAPE_TYPE_MULTIPOINT, SHAPE_TYPE_NULL, SHAPE_TYPE_POINT, SHAPE_TYPE_POLYGON, SHAPE_TYPE_POLYLINE

Constructor Summary

ESRIRecord()
Initialize an empty record.

ESRIRecord(byte[] b, int off)
Initialize a record from a buffer.

Method Summary

int	getBinaryStoreSize() Returns the number of bytes needed to store the record header and record data.
abstract ESRIBoundingBox	getBoundingBox() Gets this record's bounding box.
int	getContentLength() Accessor for the content length of this record.
abstract int	getRecordLength() Yields the length of this record's data portion.
int	getRecordNumber() Accessor for record number field.
abstract int	getShapeType() Gets this record's shape type as an int.
int	write(byte[] b, int off) Writes this record to the given buffer at the given offset.

Methods inherited from class de.fhg.igd.earth.model.input.shapefile.ShapeUtils

readBEInt, readBox, readLEDouble, readLEInt, readLEInt, readLELong, readPoint, writeBEInt, writeBox, writeLEDouble, writeLEInt, writeLELong, writePoint

Methods inherited from class java.lang.Object

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

Field Detail

recordNumber

public int recordNumber

The ordinal of this record.

contentLength

public int contentLength

The length of the data portion of this record.

Constructor Detail

ESRIRecord

public ESRIRecord()

Initialize an empty record. Used when constructing a record to be written to a shape file.

ESRIRecord

public ESRIRecord(byte[] b,
                  int off)

Initialize a record from a buffer. Reads the record header fields from the given buffer at the given offset.

Parameters:

b - the buffer

off - the offset

Method Detail

getBoundingBox

public abstract ESRIBoundingBox getBoundingBox()

Gets this record's bounding box.

Returns:

a bounding box

getShapeType

public abstract int getShapeType()

Gets this record's shape type as an int. Shape types are enumerated on the ShapeUtils class.

Returns:

the shape type as an int

getRecordLength

public abstract int getRecordLength()

Yields the length of this record's data portion.

Returns:

number of bytes equal to the size of this record's data

getBinaryStoreSize

public int getBinaryStoreSize()

Returns the number of bytes needed to store the record header and record data.

Returns:

number of bytes equal to the size of this record

write

public int write(byte[] b,
                 int off)

Writes this record to the given buffer at the given offset.

Parameters:

b - the buffer

off - the offset

Returns:

the number of bytes written

getRecordNumber

public int getRecordNumber()

Accessor for record number field.

Returns:

the ordinal of this record in the file

getContentLength

public int getContentLength()

Accessor for the content length of this record. That's the size of this record in 16 bit words.

Returns:

the number of 16 bit words that this record takes up