Package org.geotools.api.filter

Interface PropertyIsNull

All Superinterfaces:
Filter
All Known Implementing Classes:
IsNullImpl, NullFilterImpl
public interface PropertyIsNull extends Filter
Filter operator that checks if an expression's value is null. A null is equivalent to no value present. The value 0 is a valid value and is not considered null.
Since:
GeoAPI 2.0
Author:
Chris Dillard (SYS Technologies)

  • Field Summary

    Fields
    Modifier and Type
    Field
    Description
    static final String
    NAME
    Operator name used to check FilterCapabilities

    Fields inherited from interface Filter

    EXCLUDE, INCLUDE

  • Method Summary

    Modifier and Type
    Method
    Description
    Expression
    getExpression()
    Returns the expression whose value will be checked for null.

    Methods inherited from interface Filter

    accept, evaluate

  • Field Details

  • Method Details

    • getExpression

      Expression getExpression()
      Returns the expression whose value will be checked for null.