/*
* GeoTools - The Open Source Java GIS Toolkit
* http://geotools.org
*
* (C) 2005-2008, Open Source Geospatial Foundation (OSGeo)
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation;
* version 2.1 of the License.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*/
package org.geotools.referencing.factory.epsg;
import java.util.Iterator;
import java.util.logging.Level;
import junit.framework.Test;
import junit.framework.TestCase;
import junit.framework.TestSuite;
import org.opengis.referencing.FactoryException;
import org.opengis.referencing.IdentifiedObject;
import org.opengis.referencing.crs.CRSAuthorityFactory;
import org.opengis.referencing.crs.CoordinateReferenceSystem;
import org.opengis.referencing.operation.Conversion;
import org.opengis.referencing.operation.Transformation;
import org.opengis.referencing.operation.CoordinateOperation;
import org.opengis.referencing.operation.CoordinateOperationFactory;
import org.opengis.referencing.operation.ConcatenatedOperation;
import org.geotools.referencing.operation.BufferedCoordinateOperationFactory;
import org.geotools.referencing.operation.AbstractCoordinateOperation;
import org.geotools.referencing.operation.AuthorityBackedFactory;
import org.geotools.referencing.ReferencingFactoryFinder;
import org.geotools.factory.Hints;
import org.geotools.resources.Arguments;
import org.geotools.resources.Classes;
/**
* Tests the usage of {@link CoordinateOperationFactory} with the help of the
* EPSG database. Any EPSG plugin should fit. However, this test live in the
* {@code plugin/epsg-hsql} module since the HSQL plugin is the only one which
* is garantee to work on any machine running Maven.
*
*
*
* @source $URL$
* @version $Id$
* @author Martin Desruisseaux (IRD)
*/
public class OperationFactoryTest extends TestCase {
/**
* Run the suite from the command line. If {@code "-log"} flag is specified on the
* command-line, then the logger will be set to {@link Level#CONFIG}. This is usefull
* for tracking down which data source is actually used.
*/
public static void main(final String[] args) {
final Arguments arguments = new Arguments(args);
final boolean log = arguments.getFlag("-log");
arguments.getRemainingArguments(0);
org.geotools.util.logging.Logging.GEOTOOLS.forceMonolineConsoleOutput(log ? Level.CONFIG : null);
junit.textui.TestRunner.run(suite());
}
/**
* Returns the test suite.
*/
public static Test suite() {
return new TestSuite(OperationFactoryTest.class);
}
/**
* Constructs a test case with the given name.
*/
public OperationFactoryTest(final String name) {
super(name);
}
/**
* Returns the first identifier for the specified object.
*/
private static String getIdentifier(final IdentifiedObject object) {
return object.getIdentifiers().iterator().next().getCode();
}
/**
* Tests the creation of an operation from EPSG:4230 to EPSG:4326. They are the same
* CRS than the one tested in {@link DefaultDataSourceTest#testTransformations}.
*/
public void testCreate() throws FactoryException {
final CRSAuthorityFactory crsFactory;
final CoordinateOperationFactory opFactory;
CoordinateReferenceSystem sourceCRS;
CoordinateReferenceSystem targetCRS;
CoordinateOperation operation;
crsFactory = ReferencingFactoryFinder.getCRSAuthorityFactory("EPSG", null);
opFactory = ReferencingFactoryFinder.getCoordinateOperationFactory(null);
sourceCRS = crsFactory.createCoordinateReferenceSystem("4230");
targetCRS = crsFactory.createCoordinateReferenceSystem("4326");
operation = opFactory.createOperation(sourceCRS, targetCRS);
assertSame(sourceCRS, operation.getSourceCRS());
assertSame(targetCRS, operation.getTargetCRS());
assertSame(operation, opFactory.createOperation(sourceCRS, targetCRS));
assertTrue("Expected a buffered factory but got " + opFactory.getClass().getName(),
opFactory instanceof BufferedCoordinateOperationFactory);
assertTrue("EPSG authority factory not found.",
((BufferedCoordinateOperationFactory) opFactory).getImplementationHints().
get(Hints.COORDINATE_OPERATION_FACTORY) instanceof AuthorityBackedFactory);
assertEquals("1612", getIdentifier(operation)); // See comment in DefaultDataSourceTest.
assertEquals(1.0, AbstractCoordinateOperation.getAccuracy(operation), 1E-6);
assertTrue(operation instanceof Transformation);
/*
* Tests a transformation not backed directly by an authority factory.
* However, the inverse transform may exist in the authority factory.
*/
sourceCRS = crsFactory.createCoordinateReferenceSystem("4326");
targetCRS = crsFactory.createCoordinateReferenceSystem("2995");
operation = opFactory.createOperation(sourceCRS, targetCRS);
assertTrue("This test needs an operation not backed by the EPSG factory.",
operation.getIdentifiers().isEmpty());
// Should contains exactly one transformations and an arbitrary number of conversions.
assertTrue(operation instanceof ConcatenatedOperation);
int count = 0;
for (final Iterator it=((ConcatenatedOperation) operation).getOperations().iterator(); it.hasNext();) {
final CoordinateOperation op = (CoordinateOperation) it.next();
if (op instanceof Transformation) {
count++;
} else {
assertTrue("Expected Conversion but got " +
Classes.getShortName(AbstractCoordinateOperation.getType(op)) + ". ",
(op instanceof Conversion));
}
}
assertEquals("The coordinate operation should contains exactly 1 transformation", 1, count);
assertTrue(AbstractCoordinateOperation.getAccuracy(operation) <= 25);
}
}