O'Reilly logo

Getting Started with Oracle Event Processing 11g by Lloyd Williams, Robin J. Smith, Alexandre Alves

Stay ahead with the world's most comprehensive technology and business learning platform.

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, tutorials, and more.

Start Free Trial

No credit card required

Determining if geometries relate to each other

The spatial operations allow you to determine the relationship between two or more geometry objects. Some examples are:

  • Geometries are next to each other
  • Geometries are contained by one another
  • Geometries intersect boundaries

In the last chapter, you used the contain operation. Let's start by revisiting it:

boolean contain@spatial(
  Geometry containingGeometry, 
  Geometry containedGeometry, 
  double tolerance)

The contain() function returns true if the containedGeometry is contained by the containingGeometry, otherwise it returns false. A geometry is considered contained by another geometry if all the points that make up the former is completely within the shape of the latter. In particular, a geometry is ...

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, interactive tutorials, and more.

Start Free Trial

No credit card required