Package io.github.sebasbaumh.postgis

Class Geometry

java.lang.Object

io.github.sebasbaumh.postgis.Geometry

All Implemented Interfaces:

Serializable

Direct Known Subclasses:

Curve, MultiGeometry, Point, PolygonBase

@NonNullByDefault
public abstract class Geometry
extends Object
implements Serializable

The base class of all geometries

See Also:

Serialized Form

Field Summary

Fields

Modifier and Type	Field	Description
static int	UNKNOWN_SRID	Official UNKNOWN srid value

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	Geometry(int type)	Constructor for subclasses.

Method Summary

Modifier and Type	Method	Description
boolean	checkConsistency()	Do some internal consistency checks on the geometry.
boolean	equals(Object obj)	java.lang.Object equals implementation
abstract Iterable<Point>	getCoordinates()	Gets the coordinates of this Geometry.
abstract int	getNumberOfCoordinates()	Gets the number of coordinates of this Geometry.
int	getSrid()	The OGIS geometry type number of this geometry.
int	getType()	Gets the OGIS geometry type number of this geometry.
int	hashCode()
abstract boolean	hasMeasure()	Returns whether we have a measure (4th dimension)
abstract boolean	is3d()	Checks if this Geometry is 3d.
abstract boolean	isEmpty()	Ist this Geometry empty, so does it contain no coordinates or other geometries?
void	setSrid(int srid)	Recursively sets the srid on this geometry and all contained subgeometries

Methods inherited from class java.lang.Object

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

Field Detail

UNKNOWN_SRID

public static final int UNKNOWN_SRID

Official UNKNOWN srid value

See Also:

Constant Field Values

Constructor Detail

Geometry

protected Geometry(int type)

Constructor for subclasses.

Parameters:

type - has to be given by all subclasses

Method Detail

checkConsistency

public boolean checkConsistency()

Do some internal consistency checks on the geometry. Currently, all Geometries must have a valid dimension (2 or 3) and a valid type. Composed geometries must have all equal SRID, dimensionality and measures, as well as that they do not contain NULL or inconsistent subgeometries. BinaryParser and WKTParser should only generate consistent geometries. BinaryWriter may produce invalid results on inconsistent geometries.

Returns:

true if all checks are passed.

equals

public boolean equals(@Nullable
                      Object obj)

java.lang.Object equals implementation

Overrides:

equals in class Object

Parameters:

obj - geometry to compare

Returns:

true if equal, false otherwise

getCoordinates

public abstract Iterable<Point> getCoordinates()

Gets the coordinates of this Geometry.

Returns:

coordinates

getNumberOfCoordinates

public abstract int getNumberOfCoordinates()

Gets the number of coordinates of this Geometry.

Returns:

number of coordinates

getSrid

public int getSrid()

The OGIS geometry type number of this geometry.

Returns:

the SRID of this geometry

getType

public int getType()

Gets the OGIS geometry type number of this geometry.

Returns:

type of this geometry

hashCode

public int hashCode()

Overrides:

hashCode in class Object

hasMeasure

public abstract boolean hasMeasure()

Returns whether we have a measure (4th dimension)

Returns:

true if the geometry has a measure, false otherwise

is3d

public abstract boolean is3d()

Checks if this Geometry is 3d.

Returns:

true on success, else false

isEmpty

public abstract boolean isEmpty()

Ist this Geometry empty, so does it contain no coordinates or other geometries?

Returns:

true on success, else false

setSrid

public void setSrid(int srid)

Recursively sets the srid on this geometry and all contained subgeometries

Parameters:

srid - the SRID for this geometry