/ 
SQL-Entity-0.03
River stage one • 1 direct dependent • 1 total dependent
/ SQL::Entity::Condition

NAME

SQL::Entity::Condition - Entity SQL Condition abstraction.

DESCRIPTION

Represents sql condition.

SYNOPSIS

use SQL::Entity::Condition ':all';

#Creates "a = 1" condition
my $cond = sql_cond('a', '=', 1);

#Creates "a = 1 AND b > 1 AND c < 1" condition
my $cond = sql_and( 
    sql_cond('a', '=', 1),
    sql_cond('b', '>', 1),
    sql_cond('c', '<', 1),
);    

Creates "a = 1 OR b > 1 OR c < 1" condition
my $cond = sql_or( 
  sql_cond('a', '=', 1),
  sql_cond('b', '>', 1),
  sql_cond('c', '<', 1),
);    

Creates "(a = 1 AND  b = 1) OR c LIKE 1" condition
my $cond = sql_and(
  sql_cond('a', '=', 1),
  sql_cond('b', '=', 1),
)->or( 
  sql_cond('c', 'LIKE', 1)
);

EXPORT

None by default. sql_cond sql_and sql_or by tag 'all'

ATTRIBUTES

operand1

First operand for condition.

operator

Operator

operand2

Second operand for condition.

relation

Relation between compsite condition.

conditions

Association to composie condition

METHOD

new
condition_iterator
sql_cond( string | SQL::Entity::Column: $operand1, string: $operator, string | SQL::Entity::Column: $operand2) returns SQL::Entity::Condition

Create simple Condition object.

and(ARRAY $condition_list) returns SQL::Entity::Condition

Create a composite Condition object with AND relation between current object and passed in condition list.

ord(ARRAY $condition_list) returns SQL::Entity::Condition

Create a composite Condition object with OR relation between current object an passed in condition list.

sql_andd(ARRAY $condition_list) returns SQL::Entity::Condition

Create a composite Condition object with AND relation.

sql_ord(ARRAY $condition_list) returns SQL::Entity::Condition

Create a composite Condition object with OR relation.

sql_composite(ARRAY $condition_list) returns SQL::Entity::Condition

Create a composite Condition object.

as_string

Converts condition to string

operand

Return expression for passed in operand.

struct_to_condition

Converts passed in data structure to condition object. SQL::Entity::Condition->struct_to_condition(a => 1, b => 3); converts to a = 1 AND b = 3

SQL::Entity::Condition->struct_to_condition(a => 1, b => [1,3]); converts to a = 1 AND b IN (1,3)

SQL::Entity::Condition->struct_to_condition(a => 1, b => {operator => '!=', operand => 3}); converts to a = 1 AND b != 3

SQL::Entity::Condition->struct_to_condition(a => 1, b => {operator => 'LIKE', operand => "'A%'", relation => 'OR'}); coverts to a = 1 OR b LIKE 'A%'

convert_extended_operand

Return operator, operand2, relation for passed in operand

SEE ALSO

SQL::Query SQL::Entity SQL::Entity::Column

COPYRIGHT AND LICENSE

The SQL::Entity::Condition module is free software. You may distribute under the terms of either the GNU General Public License or the Artistic License, as specified in the Perl README file.

AUTHOR

Adrian Witas, adrian@webapp.strefa.pl