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GeographyValidator.java
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GeographyValidator.java
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/*
* Licensed to Elasticsearch under one or more contributor
* license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright
* ownership. Elasticsearch licenses this file to you under
* the Apache License, Version 2.0 (the "License"); you may
* not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*/
package org.elasticsearch.geometry.utils;
import org.elasticsearch.geometry.Circle;
import org.elasticsearch.geometry.Geometry;
import org.elasticsearch.geometry.GeometryCollection;
import org.elasticsearch.geometry.GeometryVisitor;
import org.elasticsearch.geometry.Line;
import org.elasticsearch.geometry.LinearRing;
import org.elasticsearch.geometry.MultiLine;
import org.elasticsearch.geometry.MultiPoint;
import org.elasticsearch.geometry.MultiPolygon;
import org.elasticsearch.geometry.Point;
import org.elasticsearch.geometry.Polygon;
import org.elasticsearch.geometry.Rectangle;
/**
* Validator that checks that lats are between -90 and +90 and lons are between -180 and +180 and altitude is present only if
* ignoreZValue is set to true
*/
public class GeographyValidator implements GeometryValidator {
/**
* Minimum longitude value.
*/
private static final double MIN_LON_INCL = -180.0D;
/**
* Maximum longitude value.
*/
private static final double MAX_LON_INCL = 180.0D;
/**
* Minimum latitude value.
*/
private static final double MIN_LAT_INCL = -90.0D;
/**
* Maximum latitude value.
*/
private static final double MAX_LAT_INCL = 90.0D;
private final boolean ignoreZValue;
public GeographyValidator(boolean ignoreZValue) {
this.ignoreZValue = ignoreZValue;
}
/**
* validates latitude value is within standard +/-90 coordinate bounds
*/
protected void checkLatitude(double latitude) {
if (Double.isNaN(latitude) || latitude < MIN_LAT_INCL || latitude > MAX_LAT_INCL) {
throw new IllegalArgumentException(
"invalid latitude " + latitude + "; must be between " + MIN_LAT_INCL + " and " + MAX_LAT_INCL);
}
}
/**
* validates longitude value is within standard +/-180 coordinate bounds
*/
protected void checkLongitude(double longitude) {
if (Double.isNaN(longitude) || longitude < MIN_LON_INCL || longitude > MAX_LON_INCL) {
throw new IllegalArgumentException(
"invalid longitude " + longitude + "; must be between " + MIN_LON_INCL + " and " + MAX_LON_INCL);
}
}
protected void checkAltitude(double zValue) {
if (ignoreZValue == false && Double.isNaN(zValue) == false) {
throw new IllegalArgumentException("found Z value [" + zValue + "] but [ignore_z_value] "
+ "parameter is [" + ignoreZValue + "]");
}
}
@Override
public void validate(Geometry geometry) {
geometry.visit(new GeometryVisitor<Void, RuntimeException>() {
@Override
public Void visit(Circle circle) throws RuntimeException {
checkLatitude(circle.getY());
checkLongitude(circle.getX());
checkAltitude(circle.getZ());
return null;
}
@Override
public Void visit(GeometryCollection<?> collection) throws RuntimeException {
for (Geometry g : collection) {
g.visit(this);
}
return null;
}
@Override
public Void visit(Line line) throws RuntimeException {
for (int i = 0; i < line.length(); i++) {
checkLatitude(line.getY(i));
checkLongitude(line.getX(i));
checkAltitude(line.getZ(i));
}
return null;
}
@Override
public Void visit(LinearRing ring) throws RuntimeException {
for (int i = 0; i < ring.length(); i++) {
checkLatitude(ring.getY(i));
checkLongitude(ring.getX(i));
checkAltitude(ring.getZ(i));
}
return null;
}
@Override
public Void visit(MultiLine multiLine) throws RuntimeException {
return visit((GeometryCollection<?>) multiLine);
}
@Override
public Void visit(MultiPoint multiPoint) throws RuntimeException {
return visit((GeometryCollection<?>) multiPoint);
}
@Override
public Void visit(MultiPolygon multiPolygon) throws RuntimeException {
return visit((GeometryCollection<?>) multiPolygon);
}
@Override
public Void visit(Point point) throws RuntimeException {
checkLatitude(point.getY());
checkLongitude(point.getX());
checkAltitude(point.getZ());
return null;
}
@Override
public Void visit(Polygon polygon) throws RuntimeException {
polygon.getPolygon().visit(this);
for (int i = 0; i < polygon.getNumberOfHoles(); i++) {
polygon.getHole(i).visit(this);
}
return null;
}
@Override
public Void visit(Rectangle rectangle) throws RuntimeException {
checkLatitude(rectangle.getMinY());
checkLatitude(rectangle.getMaxY());
checkLongitude(rectangle.getMinX());
checkLongitude(rectangle.getMaxX());
checkAltitude(rectangle.getMinZ());
checkAltitude(rectangle.getMaxZ());
return null;
}
});
}
}