Interface LineStringExpression<T>

All Superinterfaces:

ComparableExpression<T>, Expression<T>, GeometryExpression<T>

public interface LineStringExpression<T>
extends GeometryExpression<T>

Representation of a LineString expression. Note that this is not part of the JDO spec, but a vendor extension to allow JDOQLTyped handling for geometry types.

Method Summary

Modifier and Type	Method	Description
GeometryExpression	getEndPoint()	Returns the last point of the Curve
GeometryExpression	getPointN(NumericExpression position)	Returns the nth Point in the LineString.
GeometryExpression	getStartPoint()	Returns the first point of the Curve
BooleanExpression	isClosed()	Returns TRUE if Curve/MultiCurve is closed, i.e., if StartPoint(Curve) = EndPoint(Curve).
BooleanExpression	isRing()	Returns TRUE if Curve/MultiCurve is closed and simple.

Methods inherited from interface ComparableExpression

asc, desc, gt, gt, gteq, gteq, lt, lt, lteq, lteq, max, min

Methods inherited from interface Expression

as, cast, count, countDistinct, eq, eq, instanceOf, ne, ne

Methods inherited from interface GeometryExpression

buffer, contains, convexHull, crosses, difference, disjoint, distance, equals, getArea, getBoundary, getCentroid, getDimension, getEnvelope, getGeometryN, getGeometryType, getLength, getNumGeometries, getNumPoints, getPointOnSurface, getSRID, intersection, intersects, isEmpty, isSimple, overlaps, relate, symDifference, toBinary, toText, touches, union, within

Method Details

isRing

BooleanExpression isRing()

Returns TRUE if Curve/MultiCurve is closed and simple.

Returns:

Whether it is closed and simple

getStartPoint

GeometryExpression getStartPoint()

Returns the first point of the Curve

Returns:

The first point

getPointN

GeometryExpression getPointN(NumericExpression position)

Returns the nth Point in the LineString.

Parameters:

position - The "n"

Returns:

The nth Point of the LineString

getEndPoint

GeometryExpression getEndPoint()

Returns the last point of the Curve

Returns:

The last point

isClosed

BooleanExpression isClosed()

Returns TRUE if Curve/MultiCurve is closed, i.e., if StartPoint(Curve) = EndPoint(Curve).

Returns:

Whether it is closed