prajna.geo

Class EsriReader

java.lang.Object

prajna.geo.GeoReader

prajna.geo.EsriReader

public class EsriReader
extends GeoReader

Reads ESRI shape files and associated files to construct geographic layers of data. This class can read shape files and the associated feature files from a file system or accessible URL. It uses these to construct the geographic shapes which can then be used for a variety of tasks, such as map displays or geographic filtering.

Author:

Edward Swing

Constructor Summary

Constructors

Constructor and Description
EsriReader(java.io.File shapeFile) Instantiates a new EsriReader.
EsriReader(java.net.URL shapeUrl) Instantiates a new EsriReader.
EsriReader(java.net.URL baseDir, java.lang.String name) Instantiates a new EsriReader.

Method Summary

Methods

Modifier and Type	Method and Description
java.util.Map<java.lang.String,DataType>	getFields() Return a map of the fields for this shapefile, along with data types.
java.lang.String	getName() Gets the name associated with this reader.

Methods inherited from class prajna.geo.GeoReader

addShape, createLayer, findShape, findShape, getShapes, matchShapes

Methods inherited from class java.lang.Object

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

Constructor Detail

EsriReader

public EsriReader(java.io.File shapeFile)

Instantiates a new EsriReader. This class initializes the reader to point to the specified file. Any extensions of the name are stripped internally, so that this reader can access ESRI files with different extensions.

Parameters:

shapeFile - the URL of the shape file

EsriReader

public EsriReader(java.net.URL shapeUrl)

Instantiates a new EsriReader. This class initializes the reader to point to the specified file. Any extensions of the name are stripped internally, so that this reader can access ESRI files with different extensions. The URL may specify a local file or an accessible URL on a remote system

Parameters:

shapeUrl - the URL of the shape file

EsriReader

public EsriReader(java.net.URL baseDir,
          java.lang.String name)

Instantiates a new EsriReader. This class initializes the reader to point to the specified base directory and file name. Any extensions of the name are stripped internally, so that this reader can access ESRI files with different extensions. The directory and files can be either on a local file system or an accessible URL.

Parameters:

baseDir - the base directory.

name - the shape file name.

Method Detail

getFields

public java.util.Map<java.lang.String,DataType> getFields()

Return a map of the fields for this shapefile, along with data types.

Returns:

a field map including field names and types

getName

public java.lang.String getName()

Gets the name associated with this reader. For an ESRI reader, this method returns the base name. The base name is the base file name for this reader, without extensions.

Specified by:

getName in class GeoReader

Returns:

the base file name