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<?php |
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/** |
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* Table utilities. |
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*/ |
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declare(strict_types=1); |
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namespace PhpMyAdmin\SqlParser\Utils; |
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use PhpMyAdmin\SqlParser\Statements\CreateStatement; |
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use function is_array; |
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use function str_replace; |
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/** |
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* Table utilities. |
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*/ |
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class Table |
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{ |
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/** |
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* Gets the foreign keys of the table. |
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* |
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* @param CreateStatement $statement the statement to be processed |
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* |
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* @return array |
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*/ |
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public static function getForeignKeys($statement) |
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{ |
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if (empty($statement->fields) || (! is_array($statement->fields)) || (! $statement->options->has('TABLE'))) { |
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return []; |
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} |
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$ret = []; |
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foreach ($statement->fields as $field) { |
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if (empty($field->key) || ($field->key->type !== 'FOREIGN KEY')) { |
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continue; |
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} |
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$columns = []; |
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foreach ($field->key->columns as $column) { |
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if (! isset($column['name'])) { |
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continue; |
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} |
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$columns[] = $column['name']; |
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} |
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$tmp = [ |
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'constraint' => $field->name, |
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'index_list' => $columns, |
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]; |
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if (! empty($field->references)) { |
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$tmp['ref_db_name'] = $field->references->table->database; |
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$tmp['ref_table_name'] = $field->references->table->table; |
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$tmp['ref_index_list'] = $field->references->columns; |
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$opt = $field->references->options->has('ON UPDATE'); |
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if ($opt) { |
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$tmp['on_update'] = str_replace(' ', '_', $opt); |
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} |
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$opt = $field->references->options->has('ON DELETE'); |
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if ($opt) { |
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$tmp['on_delete'] = str_replace(' ', '_', $opt); |
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} |
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} |
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$ret[] = $tmp; |
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} |
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return $ret; |
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} |
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/** |
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* Gets fields of the table. |
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* |
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* @param CreateStatement $statement the statement to be processed |
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* |
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* @return array |
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*/ |
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public static function getFields($statement) |
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{ |
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if (empty($statement->fields) || (! is_array($statement->fields)) || (! $statement->options->has('TABLE'))) { |
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return []; |
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} |
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$ret = []; |
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foreach ($statement->fields as $field) { |
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// Skipping keys. |
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if (empty($field->type)) { |
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continue; |
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} |
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$ret[$field->name] = [ |
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'type' => $field->type->name, |
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'timestamp_not_null' => false, |
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]; |
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if (! $field->options) { |
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continue; |
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} |
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if ($field->type->name === 'TIMESTAMP') { |
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if ($field->options->has('NOT NULL')) { |
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$ret[$field->name]['timestamp_not_null'] = true; |
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} |
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} |
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$option = $field->options->has('DEFAULT'); |
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if ($option) { |
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$ret[$field->name]['default_value'] = $option; |
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if ($option === 'CURRENT_TIMESTAMP') { |
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$ret[$field->name]['default_current_timestamp'] = true; |
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} |
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} |
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$option = $field->options->has('ON UPDATE'); |
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if ($option === 'CURRENT_TIMESTAMP') { |
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$ret[$field->name]['on_update_current_timestamp'] = true; |
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} |
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$option = $field->options->has('AS'); |
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if (! $option) { |
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continue; |
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} |
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$ret[$field->name]['generated'] = true; |
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$ret[$field->name]['expr'] = $option; |
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} |
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return $ret; |
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} |
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} |
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phpmyadmin /
sql-parser
