org.opengis.cite.iso19136.data.spatial

Class EnvelopeTests

java.lang.Object

org.opengis.cite.iso19136.data.DataFixture

org.opengis.cite.iso19136.data.spatial.EnvelopeTests

public class EnvelopeTests
extends DataFixture

Validates the content of a gml:Envelope element, which implements the GM_Envelope class from ISO 19107.

The "lowerCorner" represents a coordinate position consisting of all the minimal ordinates for each dimension for all points within the envelope. The "upperCorner" is a coordinate position consisting of all the maximal ordinates for each dimension for all points within the envelope.

Sources

• ISO 19136, cl. 10.1.4.6: EnvelopeType, Envelope
• ISO 19136, cl. 9.10: Spatial reference system used in a feature or feature collection
• ISO 19107, cl. 6.4.3: GM_Envelope

Field Summary

Fields

Modifier and Type	Field and Description
(package private) List<org.opengis.geometry.Envelope>	envelopes

Fields inherited from class org.opengis.cite.iso19136.data.DataFixture

dataFile, model

Constructor Summary

Constructors

Constructor and Description
EnvelopeTests()

Method Summary

Modifier and Type	Method and Description
void	checkEnvelopePositions() [Test] The coordinates of the lower corner must be less than the coordinates of the upper corner, where the coordinate tuples are compared item by item.
void	envelopeHasValidCRS() [Test] An envelope must refer to a coordinate reference system using the srsName attribute.
void	findEnvelopes() A configuration method (BeforeClass) that finds gml:Envelope elements in the GML document under test.

Methods inherited from class org.opengis.cite.iso19136.data.DataFixture

generateXPathExpression, initDataFixture, setDataFile, setSchemaModel

Methods inherited from class java.lang.Object

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

Field Detail

envelopes

List<org.opengis.geometry.Envelope> envelopes

Constructor Detail

EnvelopeTests

public EnvelopeTests()

Method Detail

findEnvelopes

public void findEnvelopes()

A configuration method (BeforeClass) that finds gml:Envelope elements in the GML document under test. If none are found all test methods defined in the class will be skipped.

envelopeHasValidCRS

public void envelopeHasValidCRS()

[Test] An envelope must refer to a coordinate reference system using the srsName attribute. The alternative is to specify the CRS separately for each corner position but this is very uncommon.

The value of the srsName attribute must be an absolute URI, but it need not be dereferenceable for well-known CRS identifiers. The 'urn' or 'http' URI schemes may be used to identify a CRS as described in OGC 09-048r3, Name type specification -- definitions -- part 1 -- basic name. For example, the following URIs identify the WGS 84 (geographic 2D) coordinate reference system:

• urn:ogc:def:crs:EPSG::4326
• http://www.opengis.net/def/crs/EPSG/0/4326

Note: Since gml:Envelope is not a geometry object, the CRS reference cannot be inherited from some larger spatial context according to ISO 19136, cl. 9.10.

See Also:

OGC 09-048r3

checkEnvelopePositions

public void checkEnvelopePositions()

[Test] The coordinates of the lower corner must be less than the coordinates of the upper corner, where the coordinate tuples are compared item by item. Furthermore, the dimension of the corner positions must be identical and equal to that of the CRS.

See Also:

"ISO 19107: cl. 6.4.3.2, 6.4.3.3"