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BAEL-1334 Guide to Hibernate Spatial (#3211) 

* BAEL-1334 Guide to Hibernate Spatial

* BAEL-1334 Guide to Hibernate Spatial

Moving the files to hibernate5 from libraries

* Reverting the pom file

* BAEL-1334 Guide to Hibernate Spatial

* BAEL-1334 Guide to Hibernate Spatial

Moving the files to hibernate5 from libraries

* Reverting the pom file

* BAEL-1334 Guide to Hibernate Spatial

Improved assertions

* Add examples related to circle
This commit is contained in:
YasinBhojawala 2017-12-10 13:47:49 +05:30 committed by Grzegorz Piwowarek
parent 763f0d59c5
commit f9f5a82cf4
3 changed files with 87 additions and 0 deletions
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2
hibernate5/src/main/java/com/baeldung/hibernate/HibernateUtil.java
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@ -6,6 +6,7 @@ import com.baeldung.hibernate.pojo.OrderEntry;
import com.baeldung.hibernate.pojo.OrderEntryIdClass;
import com.baeldung.hibernate.pojo.OrderEntryPK;
import com.baeldung.hibernate.pojo.PointEntity;
import com.baeldung.hibernate.pojo.PolygonEntity;
import com.baeldung.hibernate.pojo.Product;
import com.baeldung.hibernate.pojo.Phone;
import com.baeldung.hibernate.pojo.TemporalValues;
@ -79,6 +80,7 @@ public class HibernateUtil {
metadataSources.addAnnotatedClass(Car.class);
metadataSources.addAnnotatedClass(Bag.class);
metadataSources.addAnnotatedClass(PointEntity.class);
metadataSources.addAnnotatedClass(PolygonEntity.class);
Metadata metadata = metadataSources.buildMetadata();
return metadata.getSessionFactoryBuilder()

38
hibernate5/src/main/java/com/baeldung/hibernate/pojo/PolygonEntity.java Normal file
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@ -0,0 +1,38 @@
package com.baeldung.hibernate.pojo;
import com.vividsolutions.jts.geom.Polygon;
import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.Id;
@Entity
public class PolygonEntity {
@Id
@GeneratedValue
private Long id;
private Polygon polygon;
public Long getId() {
return id;
}
public void setId(Long id) {
this.id = id;
}
public Polygon getPolygon() {
return polygon;
}
public void setPolygon(Polygon polygon) {
this.polygon = polygon;
}
@Override
public String toString() {
return "PolygonEntity{" + "id=" + id + ", polygon=" + polygon + '}';
}
}

47
hibernate5/src/test/java/com/baeldung/hibernate/HibernateSpatialTest.java
View File

@ -1,10 +1,14 @@
package com.baeldung.hibernate;
import com.baeldung.hibernate.pojo.PointEntity;
import com.baeldung.hibernate.pojo.PolygonEntity;
import com.vividsolutions.jts.geom.Coordinate;
import com.vividsolutions.jts.geom.Geometry;
import com.vividsolutions.jts.geom.Point;
import com.vividsolutions.jts.geom.Polygon;
import com.vividsolutions.jts.io.ParseException;
import com.vividsolutions.jts.io.WKTReader;
import com.vividsolutions.jts.util.GeometricShapeFactory;
import org.hibernate.Session;
import org.hibernate.Transaction;
import org.junit.After;
@ -13,6 +17,7 @@ import org.junit.Test;
import javax.persistence.Query;
import java.io.IOException;
import java.util.List;
import static org.assertj.core.api.Assertions.assertThat;
import static org.junit.Assert.assertEquals;
@ -82,16 +87,58 @@ public class HibernateSpatialTest {
.containsOnly("POINT (1 1)", "POINT (1 2)", "POINT (3 4)");
}
@Test
public void shouldSelectAllPointsWithinRadius() throws ParseException {
insertPoint("POINT (1 1)");
insertPoint("POINT (1 2)");
insertPoint("POINT (3 4)");
insertPoint("POINT (5 6)");
Query query = session.createQuery("select p from PointEntity p where within(p.point, :circle) = true",
PointEntity.class);
query.setParameter("circle", createCircle(0.0, 0.0, 5));
assertThat(query.getResultList().stream().map(p -> ((PointEntity) p).getPoint().toString()))
.containsOnly("POINT (1 1)", "POINT (1 2)");
}
@Test
public void shouldSelectAdjacentPolygons() throws ParseException {
insertPolygon("POLYGON ((0 0, 0 5, 5 5, 5 0, 0 0))");
insertPolygon("POLYGON ((3 0, 3 5, 8 5, 8 0, 3 0))");
insertPolygon("POLYGON ((2 2, 3 1, 2 5, 4 3, 3 3, 2 2))");
Query query = session.createQuery("select p from PolygonEntity p where touches(p.polygon, :polygon) = true",
PolygonEntity.class);
query.setParameter("polygon", wktToGeometry("POLYGON ((5 5, 5 10, 10 10, 10 5, 5 5))"));
assertThat(query.getResultList().stream().map(p -> ((PolygonEntity) p).getPolygon().toString()))
.containsOnly("POLYGON ((0 0, 0 5, 5 5, 5 0, 0 0))", "POLYGON ((3 0, 3 5, 8 5, 8 0, 3 0))");
}
private void insertPoint(String point) throws ParseException {
PointEntity entity = new PointEntity();
entity.setPoint((Point) wktToGeometry(point));
session.persist(entity);
}
private void insertPolygon(String polygon) throws ParseException {
PolygonEntity entity = new PolygonEntity();
entity.setPolygon((Polygon) wktToGeometry(polygon));
session.persist(entity);
}
private Geometry wktToGeometry(String wellKnownText) throws ParseException {
WKTReader fromText = new WKTReader();
Geometry geom = null;
geom = fromText.read(wellKnownText);
return geom;
}
private static Geometry createCircle(double x, double y, double radius) {
GeometricShapeFactory shapeFactory = new GeometricShapeFactory();
shapeFactory.setNumPoints(32);
shapeFactory.setCentre(new Coordinate(x, y));
shapeFactory.setSize(radius * 2);
return shapeFactory.createCircle();
}
}