org.h2.util.geometry

Class GeometryUtils.Target

java.lang.Object

org.h2.util.geometry.GeometryUtils.Target

Direct Known Subclasses:

EWKBUtils.EWKBTarget, EWKTUtils.EWKTTarget, GeoJsonUtils.GeoJsonTarget, GeometryUtils.DimensionSystemTarget, GeometryUtils.EnvelopeAndDimensionSystemTarget, GeometryUtils.EnvelopeTarget, JTSUtils.GeometryTarget

Enclosing class:

GeometryUtils

public abstract static class GeometryUtils.Target
extends java.lang.Object

Converter output target.

Constructor Summary

Constructors

Constructor and Description
GeometryUtils.Target()

Method Summary

Methods

Modifier and Type	Method and Description
protected abstract void	addCoordinate(double x, double y, double z, double m, int index, int total) Invoked to add a coordinate to a geometry.
protected void	dimensionSystem(int dimensionSystem) Invoked to add dimension system requirement.
protected void	endCollectionItem(GeometryUtils.Target target, int type, int index, int total) Invoked after writing of a collection item.
protected void	endNonEmptyPolygon() Invoked after writing of non-empty POLYGON.
protected void	endObject(int type) Invoked after writing of the object.
protected void	init(int srid) Initializes top-level target.
protected void	startCollection(int type, int numItems) Invoked before writing of a collection.
protected GeometryUtils.Target	startCollectionItem(int index, int total) Invoked before writing of a collection item.
protected void	startLineString(int numPoints) Invoked before writing a LINESTRING.
protected void	startPoint() Invoked before writing a POINT.
protected void	startPolygon(int numInner, int numPoints) Invoked before writing a POLYGON.
protected void	startPolygonInner(int numInner) Invoked before writing an inner polygon in POLYGON.

Methods inherited from class java.lang.Object

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

Constructor Detail

GeometryUtils.Target

public GeometryUtils.Target()

Method Detail

init

protected void init(int srid)

Initializes top-level target.

Parameters:

srid - SRID

dimensionSystem

protected void dimensionSystem(int dimensionSystem)

Invoked to add dimension system requirement.

Parameters:

dimensionSystem - dimension system

startPoint

protected void startPoint()

Invoked before writing a POINT.

startLineString

protected void startLineString(int numPoints)

Invoked before writing a LINESTRING.

Parameters:

numPoints - number of points in line string

startPolygon

protected void startPolygon(int numInner,
                int numPoints)

Invoked before writing a POLYGON.

Parameters:

numInner - number of inner polygons

numPoints - number of points in outer polygon

startPolygonInner

protected void startPolygonInner(int numInner)

Invoked before writing an inner polygon in POLYGON.

Parameters:

numInner - number of points in inner polygon

endNonEmptyPolygon

protected void endNonEmptyPolygon()

Invoked after writing of non-empty POLYGON.

startCollection

protected void startCollection(int type,
                   int numItems)

Invoked before writing of a collection.

Parameters:

type - type of collection, one of GeometryUtils.MULTI_POINT, GeometryUtils.MULTI_LINE_STRING, GeometryUtils.MULTI_POLYGON, GeometryUtils.GEOMETRY_COLLECTION

numItems - number of items in this collection

startCollectionItem

protected GeometryUtils.Target startCollectionItem(int index,
                                       int total)

Invoked before writing of a collection item.

Parameters:

index - 0-based index of this item in the collection

total - total number of items in the collection

Returns:

output target that should be used for processing of this collection item. May return this target or an custom sub-target.

endCollectionItem

protected void endCollectionItem(GeometryUtils.Target target,
                     int type,
                     int index,
                     int total)

Invoked after writing of a collection item. This method is invoked on the same target that was used for startCollectionItem(int, int).

Parameters:

target - the result of startCollectionItem(int, int)

type - type of collection

index - 0-based index of this item in the collection

total - total number of items in the collection

endObject

protected void endObject(int type)

Invoked after writing of the object.

Parameters:

type - type of the object

addCoordinate

protected abstract void addCoordinate(double x,
                 double y,
                 double z,
                 double m,
                 int index,
                 int total)

Invoked to add a coordinate to a geometry.

Parameters:

x - X coordinate

y - Y coordinate

z - Z coordinate (NaN if not used)

m - M coordinate (NaN if not used)

index - 0-based index of coordinate in the current sequence

total - total number of coordinates in the current sequence