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LUCENE-8587: Change GeoPoint serialization to make serialization/unserialization non-lossy

This commit is contained in:
Karl Wright 2018-12-11 09:30:01 -05:00
parent 05d728f57a
commit da62c73282
1 changed files with 32 additions and 2 deletions
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34
lucene/spatial3d/src/java/org/apache/lucene/spatial3d/geom/GeoPoint.java
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@ -77,12 +77,39 @@ public class GeoPoint extends Vector implements SerializableObject {
this(planetModel, Math.sin(lat), Math.sin(lon), Math.cos(lat), Math.cos(lon), lat, lon);
}
/** Construct a GeoPoint from a planet model and an input stream.
/** Construct a GeoPoint from an input stream.
* @param planetModel is the planet model
* @param inputStream is the input stream
*/
public GeoPoint(final PlanetModel planetModel, final InputStream inputStream) throws IOException {
this(inputStream);
}
/** Construct a GeoPoint from an input stream with no planet model.
* @param inputStream is the input stream
*/
public GeoPoint(final InputStream inputStream) throws IOException {
// Note: this relies on left-right parameter execution order!! Much code depends on that though and
// it is apparently in a java spec: https://stackoverflow.com/questions/2201688/order-of-execution-of-parameters-guarantees-in-java
this(planetModel, SerializableObject.readDouble(inputStream), SerializableObject.readDouble(inputStream));
this(SerializableObject.readDouble(inputStream),
SerializableObject.readDouble(inputStream),
SerializableObject.readDouble(inputStream),
SerializableObject.readDouble(inputStream),
SerializableObject.readDouble(inputStream));
}
/** Construct a GeoPoint from five unchecked parameters: lat, lon, x, y, z. This is primarily used for deserialization,
* but can also be used to fully initialize a point externally.
* @param lat is the latitude in radians
* @param lon is the longitude in radians
* @param x is the unit x value
* @param y is the unit y value
* @param z is the unit z value
*/
public GeoPoint(final double lat, final double lon, final double x, final double y, final double z) {
super(x, y, z);
this.latitude = lat;
this.longitude = lon;
}
/** Construct a GeoPoint from a unit (x,y,z) vector and a magnitude.
@ -131,6 +158,9 @@ public class GeoPoint extends Vector implements SerializableObject {
public void write(final OutputStream outputStream) throws IOException {
SerializableObject.writeDouble(outputStream, getLatitude());
SerializableObject.writeDouble(outputStream, getLongitude());
SerializableObject.writeDouble(outputStream, x);
SerializableObject.writeDouble(outputStream, y);
SerializableObject.writeDouble(outputStream, z);
}
/** Compute an arc distance between two points.