com.bbn.openmap.dataAccess.shape.input
Class ShpInputStream

java.lang.Object
  |
  +--com.bbn.openmap.dataAccess.shape.input.ShpInputStream

All Implemented Interfaces:

ShapeConstants

public class ShpInputStream

extends java.lang.Object

implements ShapeConstants

Reads geometry data from a .shp file.

Author:

Doug Van Auken

Field Summary

protected DrawingAttributes

drawingAttributes

Fields inherited from interface com.bbn.openmap.dataAccess.shape.ShapeConstants

DBF_CHARACTER, DBF_DATE, DBF_LOGICAL, DBF_MEMO, DBF_NUMERIC, DBF_TYPE_CHARACTER, DBF_TYPE_DATE, DBF_TYPE_LOGICAL, DBF_TYPE_MEMO, DBF_TYPE_NUMERIC, PARAM_DBF, PARAM_SHP, PARAM_SHX, SHAPE_DBF_DASHPATTERN, SHAPE_DBF_DASHPHASE, SHAPE_DBF_DESCRIPTION, SHAPE_DBF_FILLCOLOR, SHAPE_DBF_LINECOLOR, SHAPE_DBF_LINEWIDTH, SHAPE_DBF_SELECTCOLOR, SHAPE_FILE_HEADER_LENGTH, 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

ShpInputStream(java.io.InputStream is)
Constructor

Method Summary

DrawingAttributes	getDrawingAttributes() Get the DrawingAttributes used for drawing the graphics.
EsriGraphicList	getGeometry(int[][] indexData) Reads geometry from a .shp file
EsriGraphicList	getPointGeometry(int[][] indexData) Iterates through the given input stream to contruct geometry objects
EsriGraphicList	getPolyGeometry(int[][] indexData, int shapeType) Iterates through the given input stream to contruct geometry objects
int	readHeader() Reads the header section of a .shp file
void	setDrawingAttributes(DrawingAttributes da) Set the DrawingAttributes to use for drawing the graphics.

Methods inherited from class java.lang.Object

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

Field Detail

drawingAttributes

protected DrawingAttributes drawingAttributes

Constructor Detail

ShpInputStream

public ShpInputStream(java.io.InputStream is)

Constructor

Parameters:

is - An inputstream to chain with LittleEndianInputStream

Method Detail

setDrawingAttributes

public void setDrawingAttributes(DrawingAttributes da)

Set the DrawingAttributes to use for drawing the graphics.

getDrawingAttributes

public DrawingAttributes getDrawingAttributes()

Get the DrawingAttributes used for drawing the graphics.

getGeometry

public EsriGraphicList getGeometry(int[][] indexData)
                            throws java.lang.Exception

Reads geometry from a .shp file

Parameters:

indexData - The index data retreived from the .shx file

Returns:

EsriGraphicList A list of geometry

java.lang.Exception

getPointGeometry

public EsriGraphicList getPointGeometry(int[][] indexData)
                                 throws java.lang.Exception

Iterates through the given input stream to contruct geometry objects

Parameters:

indexData - A list of offsets obtained by iterating through the associated SHX file

Returns:

list An OMGraphicList that contains the collection of objects created by iterating through this input stream

java.lang.Exception

getPolyGeometry

public EsriGraphicList getPolyGeometry(int[][] indexData,
                                       int shapeType)
                                throws java.lang.Exception

Iterates through the given input stream to contruct geometry objects

Parameters:

shapeType - the type of shape to read

indexData - A list of offsets obtained by iterating through the associated SHX file

Returns:

list An OMGraphicList that contains the collection of objects created by iterating through this input stream

java.lang.Exception

readHeader

public int readHeader()
               throws java.io.IOException

Reads the header section of a .shp file

Returns:

the shape type

java.io.IOException