Filter Encoding Implementation Specification, OGC 02-059

The "Filter Expression" is a construct used to constrain the property values of an object type for the purpose of identifying a subset of object instances to be operated upon in some manner. This document describes an XML encoding of the OGC (Open GIS Consortium) Common Catalog Query Language (CQL) as a system-neutral representation of a query predicate. This document describes an XML encoding of the OGC Common Catalog Query Language (CQL) as a system- neutral representation of a query predicate. This XML representation can be easily validated, parsed, and transformed into whatever target language is required to retrieve or modify object instances stored in a persistent object store.
Other Standards: The filter encoding described in this document is a common component that can be used by several OGC web services. Any service requiring the ability to query objects from a web-accessible repository can make use of the XML filter encoding described here.

Date submitted: Sep 1, 2001

Primary Contact
David Schell, President
dschell@opengis.org
(508) 655-5858
Open GIS Consortium, Inc. (OGC)
http://www.opengis.org
35 Main Street Suite 5
Wayland, Massachusetts, 01778
United States
Developer Contact
David Schell, President
dschell@opengis.org
(508) 655-5858
Open GIS Consortium, Inc. (OGC)
http://www.opengis.org
35 Main Street Suite 5
Wayland, Massachusetts, 01778
United States