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<?php
/**
* @copyright Copyright (c) 2017 Robin Appelman <robin@icewind.nl>
*
* @author Joas Schilling <coding@schilljs.com>
* @author Robin Appelman <robin@icewind.nl>
*
* @license GNU AGPL version 3 or any later version
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as
* published by the Free Software Foundation, either version 3 of the
* License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
*/
namespace OC\DB\QueryBuilder\FunctionBuilder;
use OC\DB\QueryBuilder\QueryFunction;
use OCP\DB\QueryBuilder\ILiteral;
use OCP\DB\QueryBuilder\IParameter;
use OCP\DB\QueryBuilder\IQueryFunction;
class OCIFunctionBuilder extends FunctionBuilder {
public function md5($input): IQueryFunction {
return new QueryFunction('LOWER(DBMS_OBFUSCATION_TOOLKIT.md5 (input => UTL_RAW.cast_to_raw(' . $this->helper->quoteColumnName($input) .')))');
}
/**
* As per https://docs.oracle.com/cd/B19306_01/server.102/b14200/functions060.htm
* Oracle uses the first value to cast the rest or the values. So when the
* first value is a literal, plain value or column, instead of doing the
* math, it will cast the expression to int and continue with a "0". So when
* the second parameter is a function or column, we have to put that as
* first parameter.
*
* @param string|ILiteral|IParameter|IQueryFunction $x
* @param string|ILiteral|IParameter|IQueryFunction $y
* @return IQueryFunction
*/
public function greatest($x, $y): IQueryFunction {
if (is_string($y) || $y instanceof IQueryFunction) {
return parent::greatest($y, $x);
}
return parent::greatest($x, $y);
}
/**
* As per https://docs.oracle.com/cd/B19306_01/server.102/b14200/functions060.htm
* Oracle uses the first value to cast the rest or the values. So when the
* first value is a literal, plain value or column, instead of doing the
* math, it will cast the expression to int and continue with a "0". So when
* the second parameter is a function or column, we have to put that as
* first parameter.
*
* @param string|ILiteral|IParameter|IQueryFunction $x
* @param string|ILiteral|IParameter|IQueryFunction $y
* @return IQueryFunction
*/
public function least($x, $y): IQueryFunction {
if (is_string($y) || $y instanceof IQueryFunction) {
return parent::least($y, $x);
}
return parent::least($x, $y);
}
public function concat($x, ...$expr): IQueryFunction {
$args = func_get_args();
$list = [];
foreach ($args as $item) {
$list[] = $this->helper->quoteColumnName($item);
}
return new QueryFunction(sprintf('(%s)', implode(' || ', $list)));
}
public function groupConcat($expr, ?string $separator = ','): IQueryFunction {
$orderByClause = ' WITHIN GROUP(ORDER BY NULL)';
if (is_null($separator)) {
return new QueryFunction('LISTAGG(' . $this->helper->quoteColumnName($expr) . ')' . $orderByClause);
}
$separator = $this->connection->quote($separator);
return new QueryFunction('LISTAGG(' . $this->helper->quoteColumnName($expr) . ', ' . $separator . ')' . $orderByClause);
}
public function octetLength($field, $alias = ''): IQueryFunction {
$alias = $alias ? (' AS ' . $this->helper->quoteColumnName($alias)) : '';
$quotedName = $this->helper->quoteColumnName($field);
return new QueryFunction('LENGTHB(' . $quotedName . ')' . $alias);
}
}
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