nl.javel.gisbeans.io
Interface DataSourceInterface

All Superinterfaces:

Serializable

All Known Implementing Classes:

ShapeFile

public interface DataSourceInterface
extends Serializable

Since:

JDK 1.2

Version:

1.0

Author:

Peter Jacobs
Paul Jacobs

Method Summary

String[][]	getAttributes() returns the attribute data
String[]	getColumnNames() returns the columnNames of the attribute data
URL	getDataSource() returns the URL of the datasource
int	getNumShapes() returns the number of shapes of the particular datasource
GisObject	getShape(int index) returns a GisObject
List	getShapes() returns all the shapes of the particular datasource
List	getShapes(Rectangle2D rectangle) returns the shapes of the particular datasource in a particular extent
List	getShapes(String attribute, String columnName) returns the shapes based on a particular value of the attributes
int	getType()

Method Detail

getColumnNames

String[] getColumnNames()

returns the columnNames of the attribute data

Returns:

String[]

getAttributes

String[][] getAttributes()
                         throws IOException

returns the attribute data

Returns:

the attributes

Throws:

IOException - on IOException

getDataSource

URL getDataSource()

returns the URL of the datasource

Returns:

URL the URL of the file

getNumShapes

int getNumShapes()
                 throws IOException

returns the number of shapes of the particular datasource

Returns:

int the number of shapes

Throws:

IOException - possible file IO or database connection failures.

getShape

GisObject getShape(int index)
                   throws IOException,
                          IndexOutOfBoundsException

returns a GisObject

Parameters:

index - the number of the shape to be returned

Returns:

GisObject returns a nl.javel.gisbeans.geom.GisObject

Throws:

IndexOutOfBoundsException - whenever index>numShapes

IOException - on IOFailure

getShapes

List getShapes()
               throws IOException

returns all the shapes of the particular datasource

Returns:

List the resulting ArrayList of nl.javel.gisbeans.geom.GisObject

Throws:

IOException - on IOFailure

getShapes

List getShapes(Rectangle2D rectangle)
               throws IOException

returns the shapes of the particular datasource in a particular extent

Parameters:

rectangle - the extent of the box (in geo-coordinates)

Returns:

List the resulting ArrayList of nl.javel.gisbeans.geom.GisObject

Throws:

IOException - on IOFailure

getShapes

List getShapes(String attribute,
               String columnName)
               throws IOException

returns the shapes based on a particular value of the attributes

Parameters:

attribute - the value of the attribute

columnName - the columnName

Returns:

List the resulting ArrayList of nl.javel.gisbeans.geom.GisObject

Throws:

IOException - on IOFailure

getType

int getType()
            throws IOException

Returns:

returns the type of this dataSouce

Throws:

IOException - on IOFailure