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See:
Description
| Interface Summary | |
|---|---|
| And | Evaluates to true if all the combined expressions evaluate to true. |
| BinaryComparisonOperator | Abstract base class for filters that compare exactly two values against each other. |
| BinaryLogicOperator | Abstract super-interface for logical operators that accept two or more other logical values as inputs. |
| FeatureId | Instances of this interface represent a filter that passes only for features that have one of the IDs given to this object. |
| Filter | The abstract base class for filters. |
| FilterFactory | Interface whose methods allow the caller to create instances of the various
Filter and Expression subclasses. |
| FilterVisitor | Visitor with visit methods to be called by Filter.accept(...). |
| Not | Reverses the logical value of an expression. |
| Or | Evaluates to true if any of the combined expressions evaluate to true. |
| PropertyIsBetween | A compact way of encoding a range check. |
| PropertyIsEqualTo | Filter operator that compares that its two sub-expressions are equal to each other. |
| PropertyIsGreaterThan | Filter operator that checks that its first sub-expression is greater than its second subexpression. |
| PropertyIsGreaterThanOrEqualTo | Filter operator that checks that its first sub-expression is greater or equal to its second subexpression. |
| PropertyIsLessThan | Filter operator that checks that its first sub-expression is less than its second subexpression. |
| PropertyIsLessThanOrEqualTo | Filter operator that checks that its first sub-expression is less than or equal to its second subexpression. |
| PropertyIsLike | Filter operator that performs the equivalent of the SQL "like" operator
on properties of a feature. |
| PropertyIsNull | Filter operator that checks if an expression's value is null. |
Filters features according their properties. A filter expression is a construct used to constraints the property values of an object type for the purpose of identifying a subset of object instances to be operated upon in some manner. The following is adapted from Filter encoding implementation:
A comparison operator is used to form expressions that evaluate
the mathematical comparison between two arguments. If the arguments satisfy the comparison
then the expression evaluates to true.
Otherwise the expression evaluates to false.
In addition to the standard set
(=,<,>,>=,<=,<>) of comparison operators,
this package defines the elements PropertyIsLike,
PropertyIsBetween and PropertyIsNull.
A logical operator can be used to combine one or more conditional expressions.
The logical operator And evaluates to true if all the combined
expressions evaluate to true. The operator Or operator evaluates
to true is any of the combined expressions evaluate to true. The
Not operator reverses the logical value of an expression.
The elements And, Or and Not can be used to combine scalar,
spatial and other logical expressions to form more complex compound expressions.
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