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<?php
/**
* Data Dictionary for Firebird.
*
* This file is part of ADOdb, a Database Abstraction Layer library for PHP.
*
* @package ADOdb
* @link https://adodb.org Project's web site and documentation
* @link https://github.com/ADOdb/ADOdb Source code and issue tracker
*
* The ADOdb Library is dual-licensed, released under both the BSD 3-Clause
* and the GNU Lesser General Public Licence (LGPL) v2.1 or, at your option,
* any later version. This means you can use it in proprietary products.
* See the LICENSE.md file distributed with this source code for details.
* @license BSD-3-Clause
* @license LGPL-2.1-or-later
*
* @copyright 2000-2013 John Lim
* @copyright 2014 Damien Regad, Mark Newnham and the ADOdb community
*/
// security - hide paths
if (!defined('ADODB_DIR')) die();
class ADODB2_firebird extends ADODB_DataDict
{
var $databaseType = 'firebird';
var $seqField = false;
var $seqPrefix = 's_';
var $blobSize = 40000;
var $renameColumn = 'ALTER TABLE %s ALTER %s TO %s';
var $alterCol = ' ALTER';
var $dropCol = ' DROP';
function actualType($meta)
{
$meta = strtoupper($meta);
// Add support for custom meta types.
// We do this first, that allows us to override existing types
if (isset($this->connection->customMetaTypes[$meta])) {
return $this->connection->customMetaTypes[$meta]['actual'];
}
switch($meta) {
case 'C':
return 'VARCHAR';
case 'XL':
return 'BLOB SUB_TYPE BINARY';
case 'X':
return 'BLOB SUB_TYPE TEXT';
case 'C2':
return 'VARCHAR(32765)'; // up to 32K
case 'X2':
return 'VARCHAR(4096)';
case 'V':
return 'CHAR';
case 'C1':
return 'CHAR(1)';
case 'B':
return 'BLOB';
case 'D':
return 'DATE';
case 'TS':
case 'T':
return 'TIMESTAMP';
case 'L':
case 'I1':
case 'I2':
return 'SMALLINT';
case 'I':
case 'I4':
return 'INTEGER';
case 'I8':
return 'BIGINT';
case 'F':
return 'DOUBLE PRECISION';
case 'N':
return 'DECIMAL';
default:
return $meta;
}
}
function nameQuote($name = null, $allowBrackets = false)
{
if (!is_string($name)) {
return false;
}
$name = trim($name);
if (!is_object($this->connection)) {
return $name;
}
$quote = $this->connection->nameQuote;
// if name is of the form `name`, quote it
if (preg_match('/^`(.+)`$/', $name, $matches)) {
return $quote . $matches[1] . $quote;
}
// if name contains special characters, quote it
if (!preg_match('/^[' . $this->nameRegex . ']+$/', $name)) {
return $quote . $name . $quote;
}
return $quote . $name . $quote;
}
function createDatabase($dbname, $options = false)
{
$sql = array();
$sql[] = "DECLARE EXTERNAL FUNCTION LOWER CSTRING(80) RETURNS CSTRING(80) FREE_IT ENTRY_POINT 'IB_UDF_lower' MODULE_NAME 'ib_udf'";
return $sql;
}
function _dropAutoIncrement($tabname)
{
if (strpos($tabname, '.') !== false) {
$tarr = explode('.', $tabname);
return 'DROP SEQUENCE ' . $tarr[0] . '."s_' . $tarr[1] . '"';
}
return 'DROP SEQUENCE s_' . $tabname;
}
function _createSuffix($fname, &$ftype, $fnotnull, $fdefault, $fautoinc, $fconstraint, $funsigned)
{
$suffix = '';
if (strlen($fdefault)) {
$suffix .= " DEFAULT $fdefault";
}
if ($fnotnull) {
$suffix .= ' NOT NULL';
}
if ($fautoinc) {
$this->seqField = $fname;
}
$fconstraint = preg_replace("/``/", "\"", $fconstraint);
if ($fconstraint) {
$suffix .= ' ' . $fconstraint;
}
return $suffix;
}
/**
* Generate the SQL to create table. Returns an array of sql strings.
*/
function createTableSQL($tabname, $flds, $tableoptions = array())
{
list($lines, $pkey, $idxs) = $this->_GenFields($flds, true);
// genfields can return FALSE at times
if ($lines == null) {
$lines = array();
}
$taboptions = $this->_Options($tableoptions);
$tabname = $this->TableName($tabname);
$sql = $this->_TableSQL($tabname, $lines, $pkey, $taboptions);
if ($this->autoIncrement && !isset($taboptions['DROP'])) {
$tsql = $this->_Triggers($tabname, $taboptions);
foreach ($tsql as $s) {
$sql[] = $s;
}
}
if (is_array($idxs)) {
foreach ($idxs as $idx => $idxdef) {
$sql_idxs = $this->CreateIndexSql($idx, $tabname, $idxdef['cols'], $idxdef['opts']);
$sql = array_merge($sql, $sql_idxs);
}
}
return $sql;
}
/*
CREATE or replace TRIGGER jaddress_insert
before insert on jaddress
for each row
begin
IF ( NEW."seqField" IS NULL OR NEW."seqField" = 0 ) THEN
NEW."seqField" = GEN_ID("GEN_tabname", 1);
end;
*/
function _triggers($tabname, $taboptions)
{
if (!$this->seqField) {
return array();
}
$tab1 = preg_replace('/"/', '', $tabname);
if ($this->schema) {
$t = strpos($tab1, '.');
if ($t !== false) {
$tab = substr($tab1, $t + 1);
} else {
$tab = $tab1;
}
$seqField = $this->seqField;
$seqname = $this->schema . '.' . $this->seqPrefix . $tab;
$trigname = $this->schema . '.t_' . $this->seqPrefix . $tab;
} else {
$seqField = $this->seqField;
$seqname = $this->seqPrefix . $tab1;
$trigname = 't_' . $seqname;
}
if (isset($taboptions['DROP'])) {
$sql[] = "DROP SEQUENCE $seqname";
} elseif (isset($taboptions['REPLACE'])) {
$sql[] = "DROP SEQUENCE \"$seqname\"";
$sql[] = "CREATE SEQUENCE \"$seqname\"";
$sql[] = "ALTER TRIGGER \"$trigname\" BEFORE INSERT OR UPDATE AS BEGIN IF ( NEW.$seqField IS NULL OR NEW.$seqField = 0 ) THEN NEW.$seqField = GEN_ID(\"$seqname\", 1); END";
} else {
$sql[] = "CREATE SEQUENCE $seqname";
$sql[] = "CREATE TRIGGER $trigname FOR $tabname BEFORE INSERT OR UPDATE AS BEGIN IF ( NEW.$seqField IS NULL OR NEW.$seqField = 0 ) THEN NEW.$seqField = GEN_ID($seqname, 1); END";
}
$this->seqField = false;
return $sql;
}
/**
* Change the definition of one column
*
* @param string $tabname table-name
* @param string $flds column-name and type for the changed column
* @param string $tableflds Unused
* @param array|string $tableoptions Unused
*
* @return array with SQL strings
*/
public function alterColumnSQL($tabname, $flds, $tableflds = '', $tableoptions = '')
{
$tabname = $this->TableName($tabname);
$sql = array();
list($lines, , $idxs) = $this->_GenFields($flds);
// genfields can return FALSE at times
if ($lines == null) {
$lines = array();
}
$alter = 'ALTER TABLE ' . $tabname . $this->alterCol . ' ';
foreach ($lines as $v) {
/*
* The type must be preceded by the keyword 'TYPE'
*/
$vExplode = explode(' ', $v);
$vExplode = array_filter($vExplode);
array_splice($vExplode, 1, 0, array('TYPE'));
$v = implode(' ', $vExplode);
$sql[] = $alter . $v;
}
if (is_array($idxs)) {
foreach ($idxs as $idx => $idxdef) {
$sql_idxs = $this->CreateIndexSql($idx, $tabname, $idxdef['cols'], $idxdef['opts']);
$sql = array_merge($sql, $sql_idxs);
}
}
return $sql;
}
}