MODULE CQL
================
Module Maintainer Mauricio Pazos vmpazos

IP Review by Gabriel Roldan, November 26, 2006

This module was created by Axios Engineering as an extension of the
existing org.geotools.filter.ExpressionBuilder class, which used to
parse a SQL like constraint into a geotools Filter object.
ExpressionBuilder was already under LGPL.
Axios made this extension in order to fully support the parsing of the
OGC Common Query Language defined in the OGC CSW spec, version 2.0.1, 
as a small part of a contracted job by Gipuzkoako Foru Aldundia -
Diputación Foral de Bizkaia, Departamento deOrdenación Territorial 
(http://b5m.gipuzkoa.net).

org.geotools.filter.cql
org.geotools.filter.function
org.geotools.filter.cql (test)
org.geotools.filter.function (test)
--------------------------------

IP:
- updated headers to (C) 2006, GeoTools Project Managment Committee (PMC)

IP:by Mauricio Pazos,  Februray 04, 2008
- code refactoring to allow parsers

Was done a code refactoring to allow the easy composition of a new parsers generated with javacc with that class responsible to build filters and its components (Expressions, Literals, etc). 

This first refactoring solution was strongly limited by javacc maven plugin. This solution maintains all the generated parsers in the same package, a better solution should allow to separate different parsers in different packages (better cohesion). The javacc plugin produces spurious parser classes when they are in separated packages which produces compile errors.

Now the module has the following distribution:

src/main/java
org.geotools.filter.text.cql2
org.geotools.filter.text.txt (work in progress)

src/main/jjtree
CQLGrammar.jjt
TXTGrammar.jjt

modified-src
org.geotools.filter.text.generated.parsers (simple node modified)

test/java (unit tests)


org.geotools.filter.function
--------------------------------