| org.geotools.filter.NullFilter
All known Subclasses: org.geotools.filter.NullFilterImpl, org.geotools.filter.IsNullImpl,
NullFilter | public interface NullFilter extends Filter,PropertyIsNull(Code) | | Defines a null filter, which checks to see if an attribute is null.
author: Rob Hranac, Vision for New York author: Chris Holmes, TOPP version: $Id: NullFilter.java 22294 2006-10-20 00:55:40Z desruisseaux $org.opengis.filter.PropertyIsNull |
Method Summary | |
boolean | contains(Feature feature) Determines whether or not a given feature is null for the nullCheck
attribute.
Parameters: feature - Specified feature to examine. | Expression | getNullCheckValue() Returns the expression being checked for null. | void | nullCheckValue(Expression nullCheck) Determines whether or not a given feature is 'inside' this filter. |
contains | boolean contains(Feature feature)(Code) | | Determines whether or not a given feature is null for the nullCheck
attribute.
Parameters: feature - Specified feature to examine. Flag confirming whether or not this feature is inside thefilter.org.opengis.filter.Filter.evaluate(Feature) |
getNullCheckValue | Expression getNullCheckValue()(Code) | | Returns the expression being checked for null.
the Expression to null check.PropertyIsNull.getExpression |
nullCheckValue | void nullCheckValue(Expression nullCheck) throws IllegalFilterException(Code) | | Determines whether or not a given feature is 'inside' this filter.
Parameters: nullCheck - The attribute expression to null check. throws: IllegalFilterException - If attempting to add a non-attributeexpression.PropertyIsNull.setExpression(Expression) |
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