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The main module contains the GeoTools public interfaces that are used by
other GeoTools modules (and GeoTools applications). Where possible we make
use industry standard terms as provided by OGC and ISO standards.
The formal GeoTools public api consists of gt-metadata, jts and the gt-main module.
The main module contains the default implementations that are available provided
to other GeoTools modules using our factory system. Factories are obtained from
an appropriate FactoryFinder, giving applications a chance configure the factory
used using the Factory Hints facilities.
FilterFactory ff = CommonFactoryFinder.getFilterFactory();
Expression expr = ff.add( expression1, expression2 );
If you find yourself using implementation specific classes chances are you doing it wrong:
Expression expr = new AddImpl( expression1, expressiom2 );
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/*
* GeoTools - The Open Source Java GIS Toolkit
* http://geotools.org
*
* (C) 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.temporal.object;
import java.util.logging.Level;
import java.util.logging.Logger;
import org.opengis.temporal.Duration;
import org.opengis.temporal.Instant;
import org.opengis.temporal.OrdinalReferenceSystem;
import org.opengis.temporal.Period;
import org.opengis.temporal.RelativePosition;
import org.opengis.temporal.Separation;
import org.opengis.temporal.TemporalGeometricPrimitive;
/**
* An abstract class with two subclasses for representing a temporal instant and a temporal period.
*
* @author Mehdi Sidhoum (Geomatys)
*/
public abstract class DefaultTemporalGeometricPrimitive extends DefaultTemporalPrimitive
implements TemporalGeometricPrimitive, Separation {
/**
* Returns the distance from this TM_GeometricPrimitive to another TM_GeometricPrimitive, i.e.
* the absolute value of the difference between their temporal positions.
*/
public Duration distance(TemporalGeometricPrimitive other) {
Duration response = null;
long diff = 0L;
if (this instanceof Instant && other instanceof Instant) {
if (((Instant) this).getPosition().anyOther() != null
&& ((Instant) other).getPosition().anyOther() != null) {
if (!((DefaultTemporalPosition) ((Instant) this).getPosition().anyOther())
.getFrame()
.equals(
((DefaultTemporalPosition)
((Instant) other).getPosition().anyOther())
.getFrame())) {
try {
throw new Exception(
"the TM_TemporalPositions are not both associated with the same TM_ReferenceSystem !");
} catch (Exception ex) {
Logger.getLogger(DefaultTemporalGeometricPrimitive.class.getName())
.log(Level.SEVERE, null, ex);
}
}
} else if (((Instant) this).getPosition().anyOther() != null) {
if (((Instant) this).getPosition().anyOther().getIndeterminatePosition() != null
|| ((DefaultTemporalPosition) ((Instant) this).getPosition().anyOther())
.getFrame()
instanceof OrdinalReferenceSystem) {
try {
throw new Exception(
"either of the two TM_TemporalPositions is indeterminate or is associated with a TM_OrdianlReferenceSystem !");
} catch (Exception ex) {
Logger.getLogger(DefaultTemporalGeometricPrimitive.class.getName())
.log(Level.SEVERE, null, ex);
}
}
} else if (((Instant) other).getPosition().anyOther() != null) {
if (((Instant) other).getPosition().anyOther().getIndeterminatePosition() != null
|| ((DefaultTemporalPosition) ((Instant) other).getPosition().anyOther())
.getFrame()
instanceof OrdinalReferenceSystem) {
try {
throw new Exception(
"either of the two TM_TemporalPositions is indeterminate or is associated with a TM_OrdianlReferenceSystem !");
} catch (Exception ex) {
Logger.getLogger(DefaultTemporalGeometricPrimitive.class.getName())
.log(Level.SEVERE, null, ex);
}
}
}
}
if (this.relativePosition(other).equals(RelativePosition.BEFORE)
|| this.relativePosition(other).equals(RelativePosition.AFTER)) {
if (this instanceof Instant && other instanceof Instant) {
diff =
Math.min(
Math.abs(
((Instant) other).getPosition().getDate().getTime()
- ((Instant) this)
.getPosition()
.getDate()
.getTime()),
Math.abs(
((Instant) this).getPosition().getDate().getTime()
- ((Instant) other)
.getPosition()
.getDate()
.getTime()));
} else {
if (this instanceof Instant && other instanceof Period) {
diff =
Math.min(
Math.abs(
((Period) other)
.getBeginning()
.getPosition()
.getDate()
.getTime()
- ((Instant) this)
.getPosition()
.getDate()
.getTime()),
Math.abs(
((Period) other)
.getEnding()
.getPosition()
.getDate()
.getTime()
- ((Instant) this)
.getPosition()
.getDate()
.getTime()));
} else {
if (this instanceof Period && other instanceof Instant) {
diff =
Math.min(
Math.abs(
((Instant) other).getPosition().getDate().getTime()
- ((Period) this)
.getEnding()
.getPosition()
.getDate()
.getTime()),
Math.abs(
((Instant) other).getPosition().getDate().getTime()
- ((Period) this)
.getBeginning()
.getPosition()
.getDate()
.getTime()));
} else {
if (this instanceof Period && other instanceof Period) {
diff =
Math.min(
Math.abs(
((Period) other)
.getEnding()
.getPosition()
.getDate()
.getTime()
- ((Period) this)
.getBeginning()
.getPosition()
.getDate()
.getTime()),
Math.abs(
((Period) other)
.getBeginning()
.getPosition()
.getDate()
.getTime()
- ((Period) this)
.getEnding()
.getPosition()
.getDate()
.getTime()));
}
}
}
}
} else {
if (this.relativePosition(other).equals(RelativePosition.BEGINS)
|| this.relativePosition(other).equals(RelativePosition.BEGUN_BY)
|| this.relativePosition(other).equals(RelativePosition.CONTAINS)
|| this.relativePosition(other).equals(RelativePosition.DURING)
|| this.relativePosition(other).equals(RelativePosition.ENDED_BY)
|| this.relativePosition(other).equals(RelativePosition.ENDS)
|| this.relativePosition(other).equals(RelativePosition.EQUALS)
|| this.relativePosition(other).equals(RelativePosition.MEETS)
|| this.relativePosition(other).equals(RelativePosition.MET_BY)
|| this.relativePosition(other).equals(RelativePosition.OVERLAPPED_BY)
|| this.relativePosition(other).equals(RelativePosition.OVERLAPS)) {
diff = 0L;
}
}
response = new DefaultPeriodDuration(Math.abs(diff));
return response;
}
/** Returns the length of this TM_GeometricPrimitive */
public Duration length() {
Duration response = null;
long diff = 0L;
if (this instanceof Instant) {
response = new DefaultPeriodDuration(Math.abs(diff));
return response;
} else {
if (this instanceof Period) {
if (((Period) this).getBeginning() != null && ((Period) this).getEnding() != null) {
response =
((DefaultInstant) ((Period) this).getBeginning())
.distance(((DefaultInstant) ((Period) this).getEnding()));
return response;
}
}
return null;
}
}
}
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