Package org.h2gis.functions.spatial.create

Class GridRowSet

java.lang.Object

org.h2gis.functions.spatial.create.GridRowSet

All Implemented Interfaces:

org.h2.tools.SimpleRowSource

public class GridRowSet
extends Object
implements org.h2.tools.SimpleRowSource

GridRowSet is used to populate a result set with all grid cells. A cell could be represented as a polygon or its center point.

Author:

Erwan Bocher

Constructor Summary

Constructors

Constructor	Description
GridRowSet(Connection connection, double deltaX, double deltaY, String tableName)	The grid will be computed according a table stored in the database
GridRowSet(Connection connection, double deltaX, double deltaY, org.locationtech.jts.geom.Geometry geometry)	The grid will be computed according the envelope of a geometry

Method Summary

Modifier and Type	Method	Description
void	close()
ResultSet	getResultSet()	Give the regular grid
boolean	isCenterCell()	Return true is cell is represented as point, false as a polygon
boolean	isRowColumnNumber()	Return if the delta x and y must be expressed as number of columns and rows
Object[]	readRow()
void	reset()
void	setCenterCell(boolean isCenterCell)	Set if the cell must be represented as a point or a polygon
void	setIsRowColumnNumber(boolean isRowColumnNumber)	Set true to define the delta x and y as number of columns and rows

Methods inherited from class java.lang.Object

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

Constructor Details

GridRowSet

public GridRowSet(Connection connection,
 double deltaX,
 double deltaY,
 String tableName)

The grid will be computed according a table stored in the database

Parameters:

connection -

deltaX -

deltaY -

tableName -

GridRowSet

public GridRowSet(Connection connection,
 double deltaX,
 double deltaY,
 org.locationtech.jts.geom.Geometry geometry)

The grid will be computed according the envelope of a geometry

Parameters:

connection -

deltaX -

deltaY -

geometry -

Method Details

readRow

public Object[] readRow()
                 throws SQLException

Specified by:

readRow in interface org.h2.tools.SimpleRowSource

Throws:

SQLException

close

public void close()

Specified by:

close in interface org.h2.tools.SimpleRowSource

reset

public void reset()
           throws SQLException

Specified by:

reset in interface org.h2.tools.SimpleRowSource

Throws:

SQLException

isCenterCell

public boolean isCenterCell()

Return true is cell is represented as point, false as a polygon

Returns:

setCenterCell

public void setCenterCell(boolean isCenterCell)

Set if the cell must be represented as a point or a polygon

Parameters:

isCenterCell -

setIsRowColumnNumber

public void setIsRowColumnNumber(boolean isRowColumnNumber)

Set true to define the delta x and y as number of columns and rows

Parameters:

isRowColumnNumber -

isRowColumnNumber

public boolean isRowColumnNumber()

Return if the delta x and y must be expressed as number of columns and rows

Returns:

getResultSet

public ResultSet getResultSet()
                       throws SQLException

Give the regular grid

Returns:

ResultSet

Throws:

SQLException