Enum ValidationRule
- java.lang.Object
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- java.lang.Enum<ValidationRule>
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- org.locationtech.spatial4j.context.jts.ValidationRule
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- All Implemented Interfaces:
Serializable
,Comparable<ValidationRule>
public enum ValidationRule extends Enum<ValidationRule>
Indicates how JTS geometries (notably polygons but applies to other geometries too) are validated (if at all) and repaired (if at all). This setting usually only applies toShapeReader
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Enum Constant Summary
Enum Constants Enum Constant Description error
Geometries will be explicitly validated on creation, possibly resulting in an exception:InvalidShapeException
.none
Geometries will not be validated (because it's kinda expensive to calculate).repairBuffer0
Invalid polygons are repaired using thebuffer(0)
technique.repairConvexHull
Invalid Geometries are repaired by taking the convex hull.
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Method Summary
All Methods Static Methods Concrete Methods Modifier and Type Method Description static ValidationRule
valueOf(String name)
Returns the enum constant of this type with the specified name.static ValidationRule[]
values()
Returns an array containing the constants of this enum type, in the order they are declared.
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Enum Constant Detail
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none
public static final ValidationRule none
Geometries will not be validated (because it's kinda expensive to calculate). You may or may not ultimately get an error at some point; results are undefined. However, note that coordinates will still be validated for falling within the world boundaries.- See Also:
Geometry.isValid()
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error
public static final ValidationRule error
Geometries will be explicitly validated on creation, possibly resulting in an exception:InvalidShapeException
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repairConvexHull
public static final ValidationRule repairConvexHull
Invalid Geometries are repaired by taking the convex hull. The result will very likely be a larger shape that matches false-positives, but no false-negatives. SeeGeometry.convexHull()
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repairBuffer0
public static final ValidationRule repairBuffer0
Invalid polygons are repaired using thebuffer(0)
technique. From the JTS FAQ:The buffer operation is fairly insensitive to topological invalidity, and the act of computing the buffer can often resolve minor issues such as self-intersecting rings. However, in some situations the computed result may not be what is desired (i.e. the buffer operation may be "confused" by certain topologies, and fail to produce a result which is close to the original. An example where this can happen is a "bow-tie: or "figure-8" polygon, with one very small lobe and one large one. Depending on the orientations of the lobes, the buffer(0) operation may keep the small lobe and discard the "valid" large lobe).
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Method Detail
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values
public static ValidationRule[] values()
Returns an array containing the constants of this enum type, in the order they are declared. This method may be used to iterate over the constants as follows:for (ValidationRule c : ValidationRule.values()) System.out.println(c);
- Returns:
- an array containing the constants of this enum type, in the order they are declared
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valueOf
public static ValidationRule valueOf(String name)
Returns the enum constant of this type with the specified name. The string must match exactly an identifier used to declare an enum constant in this type. (Extraneous whitespace characters are not permitted.)- Parameters:
name
- the name of the enum constant to be returned.- Returns:
- the enum constant with the specified name
- Throws:
IllegalArgumentException
- if this enum type has no constant with the specified nameNullPointerException
- if the argument is null
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