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ResultInterface.php
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183 lines (159 loc) · 4.59 KB
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<?php
declare(strict_types=1);
/**
* 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;
use stdClass;
/**
* @template TConnection
* @template TResult
*/
interface ResultInterface
{
/**
* Retrieve the results of the query. Typically an array of
* individual data rows, which can be either an 'array', an
* 'object', or a custom class name.
*
* @param string $type The row type. Either 'array', 'object', or a class name to use
*/
public function getResult(string $type = 'object'): array;
/**
* Returns the results as an array of custom objects.
*
* @param string $className The name of the class to use.
*
* @return array
*/
public function getCustomResultObject(string $className);
/**
* Returns the results as an array of arrays.
*
* If no results, an empty array is returned.
*/
public function getResultArray(): array;
/**
* Returns the results as an array of objects.
*
* If no results, an empty array is returned.
*/
public function getResultObject(): array;
/**
* Wrapper object to return a row as either an array, an object, or
* a custom class.
*
* If the row doesn't exist, returns null.
*
* @template T of object
*
* @param int|string $n The index of the results to return, or column name.
* @param 'array'|'object'|class-string<T> $type The type of result object. 'array', 'object' or class name.
*
* @return ($n is string ? float|int|string|null : ($type is 'object' ? stdClass|null : ($type is 'array' ? array|null : T|null)))
*/
public function getRow($n = 0, string $type = 'object');
/**
* Returns a row as a custom class instance.
*
* If the row doesn't exist, returns null.
*
* @template T of object
*
* @param int $n The index of the results to return.
* @param class-string<T> $className
*
* @return T|null
*/
public function getCustomRowObject(int $n, string $className);
/**
* Returns a single row from the results as an array.
*
* If row doesn't exist, returns null.
*
* @return array|null
*/
public function getRowArray(int $n = 0);
/**
* Returns a single row from the results as an object.
*
* If row doesn't exist, returns null.
*
* @return object|stdClass|null
*/
public function getRowObject(int $n = 0);
/**
* Assigns an item into a particular column slot.
*
* @param array|string $key
* @param array|object|stdClass|null $value
*
* @return void
*/
public function setRow($key, $value = null);
/**
* Returns the "first" row of the current results.
*
* @return array|object|null
*/
public function getFirstRow(string $type = 'object');
/**
* Returns the "last" row of the current results.
*
* @return array|object|null
*/
public function getLastRow(string $type = 'object');
/**
* Returns the "next" row of the current results.
*
* @return array|object|null
*/
public function getNextRow(string $type = 'object');
/**
* Returns the "previous" row of the current results.
*
* @return array|object|null
*/
public function getPreviousRow(string $type = 'object');
/**
* Returns number of rows in the result set.
*/
public function getNumRows(): int;
/**
* Returns an unbuffered row and move the pointer to the next row.
*
* @return array|object|null
*/
public function getUnbufferedRow(string $type = 'object');
/**
* Gets the number of fields in the result set.
*/
public function getFieldCount(): int;
/**
* Generates an array of column names in the result set.
*/
public function getFieldNames(): array;
/**
* Generates an array of objects representing field meta-data.
*/
public function getFieldData(): array;
/**
* Frees the current result.
*
* @return void
*/
public function freeResult();
/**
* Moves the internal pointer to the desired offset. This is called
* internally before fetching results to make sure the result set
* starts at zero.
*
* @return bool
*/
public function dataSeek(int $n = 0);
}