org.h2.util.geometry

类 EWKBUtils.EWKBTarget

java.lang.Object

org.h2.util.geometry.GeometryUtils.Target

org.h2.util.geometry.EWKBUtils.EWKBTarget

封闭类:

EWKBUtils

public static final class EWKBUtils.EWKBTarget
extends GeometryUtils.Target

Converter output target that writes a EWKB.

构造器概要

构造器

构造器和说明
EWKBTarget(ByteArrayOutputStream output, int dimensionSystem) Creates a new EWKB output target.

方法概要

限定符和类型	方法和说明
protected void	addCoordinate(double x, double y, double z, double m, int index, int total) Invoked to add a coordinate to a geometry.
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.

从类继承的方法 org.h2.util.geometry.GeometryUtils.Target

dimensionSystem, endCollectionItem, endNonEmptyPolygon, endObject

从类继承的方法 java.lang.Object

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

构造器详细资料

EWKBTarget

public EWKBTarget(ByteArrayOutputStream output,
                  int dimensionSystem)

Creates a new EWKB output target.

参数:

output - output stream

dimensionSystem - dimension system to use

方法详细资料

init

protected void init(int srid)

从类复制的说明: GeometryUtils.Target

Initializes top-level target.

覆盖:

init 在类中 GeometryUtils.Target

参数:

srid - SRID

startPoint

protected void startPoint()

从类复制的说明: GeometryUtils.Target

Invoked before writing a POINT.

覆盖:

startPoint 在类中 GeometryUtils.Target

startLineString

protected void startLineString(int numPoints)

从类复制的说明: GeometryUtils.Target

Invoked before writing a LINESTRING.

覆盖:

startLineString 在类中 GeometryUtils.Target

参数:

numPoints - number of points in line string

startPolygon

protected void startPolygon(int numInner,
                            int numPoints)

从类复制的说明: GeometryUtils.Target

Invoked before writing a POLYGON. If polygon is empty, both parameters are 0.

覆盖:

startPolygon 在类中 GeometryUtils.Target

参数:

numInner - number of inner polygons

numPoints - number of points in outer polygon

startPolygonInner

protected void startPolygonInner(int numInner)

从类复制的说明: GeometryUtils.Target

Invoked before writing an inner polygon in POLYGON.

覆盖:

startPolygonInner 在类中 GeometryUtils.Target

参数:

numInner - number of points in inner polygon

startCollection

protected void startCollection(int type,
                               int numItems)

从类复制的说明: GeometryUtils.Target

Invoked before writing of a collection.

覆盖:

startCollection 在类中 GeometryUtils.Target

参数:

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)

从类复制的说明: GeometryUtils.Target

Invoked before writing of a collection item.

覆盖:

startCollectionItem 在类中 GeometryUtils.Target

参数:

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

total - total number of items in the collection

返回:

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

addCoordinate

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

从类复制的说明: GeometryUtils.Target

Invoked to add a coordinate to a geometry.

指定者:

addCoordinate 在类中 GeometryUtils.Target

参数:

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