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Jeffrey Cohen > Genezzo > Genezzo::Plan::TypeCheck

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Module Version: 7.17   Source  

NAME ^

Genezzo::Plan::TypeCheck - Perform checks on relational algebra representation

SYNOPSIS ^

use Genezzo::Plan::TypeCheck;

DESCRIPTION ^

ARGUMENTS ^

FUNCTIONS ^

Convert

EXPORT

LIMITATIONS ^

TODO ^

sql_where: function name processing -- drive from user_function, use type-checking functions.
update pod
need to handle FROM clause subqueries -- some tricky column type issues.
explode STARs with column names - need consistent join table position
check bool_op - AND purity if no OR's.
check relational operator (comp_op, relop)
handle ddl/dml (create, insert, delete etc with embedded queries) by checking for query_block info -- look for hash with 'query_block' before attempting table/col resolution. Need special type checking for these functions.
refactor to common TreeWalker

AUTHOR ^

Jeffrey I. Cohen, jcohen@genezzo.com

SEE ALSO ^

perl(1).

Copyright (c) 2005, 2006 Jeffrey I Cohen. All rights reserved.

    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation; either version 2 of the License, or
    any later version.

    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.

    You should have received a copy of the GNU General Public License
    along with this program; if not, write to the Free Software
    Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA

Address bug reports and comments to: jcohen@genezzo.com

For more information, please visit the Genezzo homepage at http://www.genezzo.com

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