org.elasticsearch.common.geo.builders.PointCollection Maven / Gradle / Ivy
Go to download
Show more of this group Show more artifacts with this name
Show all versions of elasticsearch Show documentation
Show all versions of elasticsearch Show documentation
Elasticsearch subproject :server
/*
* 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.common.geo.builders;
import java.io.IOException;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collection;
import org.elasticsearch.common.xcontent.XContentBuilder;
import com.vividsolutions.jts.geom.Coordinate;
/**
* The {@link PointCollection} is an abstract base implementation for all GeoShapes. It simply handles a set of points.
*/
public abstract class PointCollection> extends ShapeBuilder {
protected final ArrayList points;
protected boolean translated = false;
protected PointCollection() {
this(new ArrayList());
}
protected PointCollection(ArrayList points) {
this.points = points;
}
@SuppressWarnings("unchecked")
private E thisRef() {
return (E)this;
}
/**
* Add a new point to the collection
* @param longitude longitude of the coordinate
* @param latitude latitude of the coordinate
* @return this
*/
public E point(double longitude, double latitude) {
return this.point(coordinate(longitude, latitude));
}
/**
* Add a new point to the collection
* @param coordinate coordinate of the point
* @return this
*/
public E point(Coordinate coordinate) {
this.points.add(coordinate);
return thisRef();
}
/**
* Add a array of points to the collection
*
* @param coordinates array of {@link Coordinate}s to add
* @return this
*/
public E points(Coordinate...coordinates) {
return this.points(Arrays.asList(coordinates));
}
/**
* Add a collection of points to the collection
*
* @param coordinates array of {@link Coordinate}s to add
* @return this
*/
public E points(Collection coordinates) {
this.points.addAll(coordinates);
return thisRef();
}
/**
* Copy all points to a new Array
*
* @param closed if set to true the first point of the array is repeated as last element
* @return Array of coordinates
*/
protected Coordinate[] coordinates(boolean closed) {
Coordinate[] result = points.toArray(new Coordinate[points.size() + (closed?1:0)]);
if(closed) {
result[result.length-1] = result[0];
}
return result;
}
/**
* builds an array of coordinates to a {@link XContentBuilder}
*
* @param builder builder to use
* @param closed repeat the first point at the end of the array if it's not already defines as last element of the array
* @return the builder
*/
protected XContentBuilder coordinatesToXcontent(XContentBuilder builder, boolean closed) throws IOException {
builder.startArray();
for(Coordinate point : points) {
toXContent(builder, point);
}
if(closed) {
Coordinate start = points.get(0);
Coordinate end = points.get(points.size()-1);
if(start.x != end.x || start.y != end.y) {
toXContent(builder, points.get(0));
}
}
builder.endArray();
return builder;
}
}