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############################################################################### |
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# Codestriker: Copyright (c) 2001, 2002 David Sitsky. All rights reserved. |
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# sits@users.sourceforge.net |
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# |
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# This program is free software; you can redistribute it and modify it under |
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# the terms of the GPL. |
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|
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package Codestriker::DB::SQLite; |
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|
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use strict; |
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use DBI; |
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use Codestriker; |
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use Codestriker::DB::Database; |
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|
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# Module for handling a SQLite embedded database. |
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|
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@Codestriker::DB::SQLite::ISA = ("Codestriker::DB::Database"); |
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|
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# Type mappings. |
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my $_TYPE = { |
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$Codestriker::DB::Column::TYPE->{TEXT} => "text", |
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$Codestriker::DB::Column::TYPE->{VARCHAR} => "varchar", |
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$Codestriker::DB::Column::TYPE->{INT32} => "integer", |
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$Codestriker::DB::Column::TYPE->{INT16} => "integer", |
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$Codestriker::DB::Column::TYPE->{DATETIME} => "datetime", |
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$Codestriker::DB::Column::TYPE->{FLOAT} => "numeric" |
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}; |
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# Create a new SQLite database object. |
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sub new { |
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my $type = shift; |
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|
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# Database is parent class. |
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my $self = Codestriker::DB::Database->new(); |
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return bless $self, $type; |
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} |
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# Return the DBD module this is dependent on. |
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sub get_module_dependencies { |
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return { name => 'DBD::SQLite', version => '0' }; |
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} |
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# Retrieve a database connection. |
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sub get_connection { |
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my $self = shift; |
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# SQLite supports transactions, don't enable auto_commit. |
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return $self->_get_connection(0, 1); |
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} |
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# Return the mapping for a specific type. |
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sub _map_type { |
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my ($self, $type) = @_; |
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return $_TYPE->{$type}; |
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} |
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# Autoincrement type for SQLite. No need to set this, as by default if |
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# no entry is set into an integer primary key field, it will act as an |
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# auto-increment field, provided it is the first column in a table. |
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sub _get_autoincrement_type { |
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return ""; |
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} |
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# Indicate if the LIKE operator can be applied on a "text" field. |
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# For SQLite, this is true. |
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sub has_like_operator_for_text_field { |
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my $self = shift; |
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return 1; |
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} |
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# Function for generating an SQL subexpression for a case insensitive LIKE |
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# operation. |
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sub case_insensitive_like { |
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my ($self, $field, $expression) = @_; |
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$expression = $self->{dbh}->quote($expression); |
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# SQLite is case insensitive by default, no need to do anything. |
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return "$field LIKE $expression"; |
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} |
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1; |
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