ai.nextbillion.kits.geojson

Class MultiPoint

java.lang.Object

ai.nextbillion.kits.geojson.MultiPoint

All Implemented Interfaces:

CoordinateContainer<java.util.List<Point>>, GeoJson, Geometry, java.io.Serializable

public final class MultiPoint
extends java.lang.Object
implements CoordinateContainer<java.util.List<Point>>

A MultiPoint represents two or more geographic points that share a relationship and is one of the seven geometries found in the GeoJson spec.

This adheres to the RFC 7946 internet standard when serialized into JSON. When deserialized, this class becomes an immutable object which should be initiated using its static factory methods. The list of points must be equal to or greater than 2.

A sample GeoJson MultiPoint's provided below (in it's serialized state).

 {
   "TYPE": "MultiPoint",
   "coordinates": [
     [100.0, 0.0],
     [101.0, 1.0]
   ]
 }
 

Look over the Point documentation to get more information about formatting your list of point objects correctly.

See Also:

Serialized Form

Method Summary

Modifier and Type	Method and Description
BoundingBox	bbox() A Feature Collection might have a member named bbox to include information on the coordinate range for it's Features.
java.util.List<Point>	coordinates() provides the list of Points that make up the MultiPoint geometry.
boolean	equals(java.lang.Object obj)
static MultiPoint	fromJson(java.lang.String json) Create a new instance of this class by passing in a formatted valid JSON String.
static MultiPoint	fromLngLats(java.util.List<Point> points) Create a new instance of this class by defining a list of Points which follow the correct specifications described in the Point documentation.
static MultiPoint	fromLngLats(java.util.List<Point> points, BoundingBox bbox) Create a new instance of this class by defining a list of Points which follow the correct specifications described in the Point documentation.
int	hashCode()
java.lang.String	toJson() This takes the currently defined values found inside this instance and converts it to a GeoJson string.
java.lang.String	toString()
java.lang.String	type() This describes the TYPE of GeoJson this object is, thus this will always return MultiPoint.
static com.google.gson.TypeAdapter<MultiPoint>	typeAdapter(com.google.gson.Gson gson) Gson TYPE adapter for parsing Gson to this class.

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Method Detail

fromJson

public static MultiPoint fromJson(@NonNull
                                  java.lang.String json)

Create a new instance of this class by passing in a formatted valid JSON String. If you are creating a MultiPoint object from scratch it is better to use one of the other provided static factory methods such as fromLngLats(List). For a valid MultiPoint to exist, it must have at least 2 coordinate entries.

Parameters:

json - a formatted valid JSON string defining a GeoJson MultiPoint

Returns:

a new instance of this class defined by the values passed inside this static factory method

fromLngLats

public static MultiPoint fromLngLats(@NonNull
                                     java.util.List<Point> points)

Create a new instance of this class by defining a list of Points which follow the correct specifications described in the Point documentation. Note that there should not be any duplicate points inside the list.

Note that if less than 2 points are passed in, a runtime exception will occur.

Parameters:

points - a list of Points which make up the LineString geometry

Returns:

a new instance of this class defined by the values passed inside this static factory method

fromLngLats

public static MultiPoint fromLngLats(@NonNull
                                     java.util.List<Point> points,
                                     @Nullable
                                     BoundingBox bbox)

Create a new instance of this class by defining a list of Points which follow the correct specifications described in the Point documentation. Note that there should not be any duplicate points inside the list.

Note that if less than 2 points are passed in, a runtime exception will occur.

Parameters:

points - a list of Points which make up the LineString geometry

bbox - optionally include a bbox definition as a double array

Returns:

a new instance of this class defined by the values passed inside this static factory method

type

@NonNull
public java.lang.String type()

This describes the TYPE of GeoJson this object is, thus this will always return MultiPoint.

Specified by:

type in interface GeoJson

Returns:

a String which describes the TYPE of geometry, for this object it will always return MultiPoint

bbox

@Nullable
public BoundingBox bbox()

A Feature Collection might have a member named bbox to include information on the coordinate range for it's Features. The value of the bbox member MUST be a list of size 2*n where n is the number of dimensions represented in the contained feature geometries, with all axes of the most southwesterly point followed by all axes of the more northeasterly point. The axes order of a bbox follows the axes order of geometries.

Specified by:

bbox in interface GeoJson

Returns:

a list of double coordinate values describing a bounding box

coordinates

@NonNull
public java.util.List<Point> coordinates()

provides the list of Points that make up the MultiPoint geometry.

Specified by:

coordinates in interface CoordinateContainer<java.util.List<Point>>

Returns:

a list of points

toJson

public java.lang.String toJson()

This takes the currently defined values found inside this instance and converts it to a GeoJson string.

Specified by:

toJson in interface GeoJson

Returns:

a JSON string which represents this MultiPoint geometry

typeAdapter

public static com.google.gson.TypeAdapter<MultiPoint> typeAdapter(com.google.gson.Gson gson)

Gson TYPE adapter for parsing Gson to this class.

Parameters:

gson - the built Gson object

Returns:

the TYPE adapter for this class

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object

equals

public boolean equals(java.lang.Object obj)

Overrides:

equals in class java.lang.Object

hashCode

public int hashCode()

Overrides:

hashCode in class java.lang.Object