Parse, manipulate and translate ADQL queries with Java

 ADQL is a SQL-like language which includes astronomical facilities to
 query a database. This language has been defined by the IVOA in the
 Recommendation of 30 Oct 2008 (Version 2.0) and is mainly used in the
 Table Access Protocol (TAP).
 .
 Functionalities of the package:
 .
  * Parse: read ADQL queries in text and transform them into a Java object
   (actually, a syntactic tree).
  * Manipulate: the generated object can be manipulated so than modifying the
   original query.
  * Translate: an interface and some implementations lets translating SQL
   into other languages like SQL.