Package nz.org.riskscape.engine.output

Class ShapeFileNullMapper

java.lang.Object

nz.org.riskscape.engine.output.ShapeFileNullMapper

public class ShapeFileNullMapper
extends Object

The Shapefile format does not support null values. Some shapefile readers such as ogr appear to handle nulls. ESRI software maps a null value to placeholder values on writing.

Field Summary

Fields

Modifier and Type	Field	Description
static final Boolean	NULL_VALUE_BOOLEAN
static final Date	NULL_VALUE_DATE
static final org.locationtech.jts.geom.Geometry	NULL_VALUE_GEOMETRY
static final Number	NULL_VALUE_NUMBER
static final String	NULL_VALUE_TEXT

Constructor Summary

Constructors

Constructor	Description
ShapeFileNullMapper()

Method Summary

Modifier and Type	Method	Description
Object	mapValueIfNecessary(Object value, nz.org.riskscape.engine.types.Type type)	Returns the value, or a mapped value should it be null.

Methods inherited from class java.lang.Object

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

Field Details

NULL_VALUE_TEXT

public static final String NULL_VALUE_TEXT

See Also:

• Constant Field Values

NULL_VALUE_NUMBER

public static final Number NULL_VALUE_NUMBER

NULL_VALUE_BOOLEAN

public static final Boolean NULL_VALUE_BOOLEAN

NULL_VALUE_DATE

public static final Date NULL_VALUE_DATE

NULL_VALUE_GEOMETRY

public static final org.locationtech.jts.geom.Geometry NULL_VALUE_GEOMETRY

Constructor Details

ShapeFileNullMapper

public ShapeFileNullMapper()

Method Details

mapValueIfNecessary

public Object mapValueIfNecessary(Object value,
 nz.org.riskscape.engine.types.Type type)

Returns the value, or a mapped value should it be null. The mapped value is safe to be used in shapefiles instead of the actual null value.

Parameters:

value - to map

type - the Type that value should be

Returns:

value or a mapped value if it is null and a mapping is known