SQL::Statement::TermFactory(3)
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)
2009-2020 by Jens Rehsack: rehsackATcpan.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.
perl v5.30.3 2020-10-21 SQL::Statement::TermFactory(3)
sql-statement 1.101.0 - Generated Sat Oct 24 15:33:43 CDT 2020