Jens Rehsack > SQL-Statement > SQL::Statement::TermFactory

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Module Version: 1.405   Source  

NAME ^

SQL::Statement::TermFactory - Factory for SQL::Statement::Term instances

SYNOPSIS ^

  my $termFactory = SQL::Statement::TermFactory->new($stmt);
  my $whereTerms = $termFactory->buildCondition( $stmt->{where_clause} );
  my $col = $termFactory->buildCondition( $stmt->{col_obj}->{$name}->{content} );

DESCRIPTION ^

This package implements a factory to create type and operation based terms. Those terms are used to access data from the table(s) - either when evaluating the where clause or returning column data.

The concept of a factory can be studied in Design Patterns by the Gang of Four. The concept of using polymorphism instead of conditions is suggested by Martin Fowler in his book Refactoring.

METHODS ^

buildCondition

Builds a condition object from a given (part of a) where clause. This method calls itself recursively for predicates.

AUTHOR AND COPYRIGHT ^

Copyright (c) 2001,2005 by Jeff Zucker: jzuckerATcpan.org Copyright (c) 2008-2010 by Jens Rehsack: rehsackATcpan.org

Portions Copyright (C) 1998 by Jochen Wiedmann: jwiedATcpan.org

All rights reserved.

You may distribute this module under the terms of either the GNU General Public License or the Artistic License, as specified in the Perl README file.

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