%PDF-1.4
Directory : /var/www/vhosts/lautnusantara.com/httpdocs/web/system/Database/OCI8/ |
<?php /** * This file is part of CodeIgniter 4 framework. * * (c) CodeIgniter Foundation <admin@codeigniter.com> * * For the full copyright and license information, please view * the LICENSE file that was distributed with this source code. */ namespace CodeIgniter\Database\OCI8; use CodeIgniter\Database\BaseBuilder; use CodeIgniter\Database\Exceptions\DatabaseException; /** * Builder for OCI8 */ class Builder extends BaseBuilder { /** * Identifier escape character * * @var string */ protected $escapeChar = '"'; /** * ORDER BY random keyword * * @var array */ protected $randomKeyword = [ '"DBMS_RANDOM"."RANDOM"', ]; /** * COUNT string * * @used-by CI_DB_driver::count_all() * @used-by BaseBuilder::count_all_results() * * @var string */ protected $countString = 'SELECT COUNT(1) '; /** * Limit used flag * * If we use LIMIT, we'll add a field that will * throw off num_fields later. * * @var bool */ protected $limitUsed = false; /** * A reference to the database connection. * * @var Connection */ protected $db; /** * Generates a platform-specific insert string from the supplied data. */ protected function _insertBatch(string $table, array $keys, array $values): string { $insertKeys = implode(', ', $keys); $hasPrimaryKey = in_array('PRIMARY', array_column($this->db->getIndexData($table), 'type'), true); // ORA-00001 measures if ($hasPrimaryKey) { $sql = 'INSERT INTO ' . $table . ' (' . $insertKeys . ") \n SELECT * FROM (\n"; $selectQueryValues = []; foreach ($values as $value) { $selectValues = implode(',', array_map(static fn ($value, $key) => $value . ' as ' . $key, explode(',', substr(substr($value, 1), 0, -1)), $keys)); $selectQueryValues[] = 'SELECT ' . $selectValues . ' FROM DUAL'; } return $sql . implode("\n UNION ALL \n", $selectQueryValues) . "\n)"; } $sql = "INSERT ALL\n"; foreach ($values as $value) { $sql .= ' INTO ' . $table . ' (' . $insertKeys . ') VALUES ' . $value . "\n"; } return $sql . 'SELECT * FROM DUAL'; } /** * Generates a platform-specific replace string from the supplied data */ protected function _replace(string $table, array $keys, array $values): string { $fieldNames = array_map(static fn ($columnName) => trim($columnName, '"'), $keys); $uniqueIndexes = array_filter($this->db->getIndexData($table), static function ($index) use ($fieldNames) { $hasAllFields = count(array_intersect($index->fields, $fieldNames)) === count($index->fields); return ($index->type === 'PRIMARY') && $hasAllFields; }); $replaceableFields = array_filter($keys, static function ($columnName) use ($uniqueIndexes) { foreach ($uniqueIndexes as $index) { if (in_array(trim($columnName, '"'), $index->fields, true)) { return false; } } return true; }); $sql = 'MERGE INTO ' . $table . "\n USING (SELECT "; $sql .= implode(', ', array_map(static fn ($columnName, $value) => $value . ' ' . $columnName, $keys, $values)); $sql .= ' FROM DUAL) "_replace" ON ( '; $onList = []; $onList[] = '1 != 1'; foreach ($uniqueIndexes as $index) { $onList[] = '(' . implode(' AND ', array_map(static fn ($columnName) => $table . '."' . $columnName . '" = "_replace"."' . $columnName . '"', $index->fields)) . ')'; } $sql .= implode(' OR ', $onList) . ') WHEN MATCHED THEN UPDATE SET '; $sql .= implode(', ', array_map(static fn ($columnName) => $columnName . ' = "_replace".' . $columnName, $replaceableFields)); $sql .= ' WHEN NOT MATCHED THEN INSERT (' . implode(', ', $replaceableFields) . ') VALUES '; return $sql . (' (' . implode(', ', array_map(static fn ($columnName) => '"_replace".' . $columnName, $replaceableFields)) . ')'); } /** * Generates a platform-specific truncate string from the supplied data * * If the database does not support the truncate() command, * then this method maps to 'DELETE FROM table' */ protected function _truncate(string $table): string { return 'TRUNCATE TABLE ' . $table; } /** * Compiles a delete string and runs the query * * @param mixed $where * * @return mixed * * @throws DatabaseException */ public function delete($where = '', ?int $limit = null, bool $resetData = true) { if (! empty($limit)) { $this->QBLimit = $limit; } return parent::delete($where, null, $resetData); } /** * Generates a platform-specific delete string from the supplied data */ protected function _delete(string $table): string { if ($this->QBLimit) { $this->where('rownum <= ', $this->QBLimit, false); $this->QBLimit = false; } return parent::_delete($table); } /** * Generates a platform-specific update string from the supplied data */ protected function _update(string $table, array $values): string { $valStr = []; foreach ($values as $key => $val) { $valStr[] = $key . ' = ' . $val; } if ($this->QBLimit) { $this->where('rownum <= ', $this->QBLimit, false); } return 'UPDATE ' . $this->compileIgnore('update') . $table . ' SET ' . implode(', ', $valStr) . $this->compileWhereHaving('QBWhere') . $this->compileOrderBy(); } /** * Generates a platform-specific LIMIT clause. */ protected function _limit(string $sql, bool $offsetIgnore = false): string { $offset = (int) ($offsetIgnore === false ? $this->QBOffset : 0); if (version_compare($this->db->getVersion(), '12.1', '>=')) { // OFFSET-FETCH can be used only with the ORDER BY clause if (empty($this->QBOrderBy)) { $sql .= ' ORDER BY 1'; } return $sql . ' OFFSET ' . $offset . ' ROWS FETCH NEXT ' . $this->QBLimit . ' ROWS ONLY'; } $this->limitUsed = true; $limitTemplateQuery = 'SELECT * FROM (SELECT INNER_QUERY.*, ROWNUM RNUM FROM (%s) INNER_QUERY WHERE ROWNUM < %d)' . ($offset ? ' WHERE RNUM >= %d' : ''); return sprintf($limitTemplateQuery, $sql, $offset + $this->QBLimit + 1, $offset); } /** * Resets the query builder values. Called by the get() function */ protected function resetSelect() { $this->limitUsed = false; parent::resetSelect(); } }