## Uses of Package
org.opengis.filter

Packages that use org.opengis.filter
org.opengis.feature: Representation a features on a map.
org.opengis.feature.simple
org.opengis.feature.type: Captures the generic feature model from ISO 19109 with allowances for usability.
org.opengis.filter: Filters features according their properties.
org.opengis.filter.spatial: A spatial operator determines whether its geometric arguments satisfy the stated spatial relationship.
org.opengis.go
org.opengis.sld: Allows user-defined symbolization of feature data.

Classes in org.opengis.filter used by org.opengis.feature
Filter Fefines a constraint that can be checked against an instance of an Object (usually a Feature).

Classes in org.opengis.filter used by org.opengis.feature.simple
Filter Fefines a constraint that can be checked against an instance of an Object (usually a Feature).

Classes in org.opengis.filter used by org.opengis.feature.type
Filter Fefines a constraint that can be checked against an instance of an Object (usually a Feature).
FilterFactory Interface whose methods allow the caller to create instances of the various `Filter` and `Expression` subclasses.

Classes in org.opengis.filter used by org.opengis.filter
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.
ExcludeFilter Indicating "filter all", evaultates to `false`.
Filter Fefines a constraint that can be checked against an instance of an Object (usually a Feature).
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(...)`.
Id A filter that passes only the Identifiers listed.
IncludeFilter Indicating "no filtering", evaultates to `true`.
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.
PropertyIsNotEqualTo Filter operator that compares that its two sub-expressions are not equal to each other.
PropertyIsNull Filter operator that checks if an expression's value is `null`.

Classes in org.opengis.filter used by org.opengis.filter.spatial
Filter Fefines a constraint that can be checked against an instance of an Object (usually a Feature).

Classes in org.opengis.filter used by org.opengis.go
FilterFactory Interface whose methods allow the caller to create instances of the various `Filter` and `Expression` subclasses.

Classes in org.opengis.filter used by org.opengis.sld
Filter Fefines a constraint that can be checked against an instance of an Object (usually a Feature).

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