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src/Addiks/PHPSQL/Iterators/AliasedResourceIterator.php
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<?php | ||
/** | ||
* Copyright (C) 2015 Gerrit Addiks. | ||
* This package (including this file) was released under the terms of the GPL-3.0. | ||
* You should have received a copy of the GNU General Public License along with this program. | ||
* If not, see <http://www.gnu.org/licenses/> or send me a mail so i can send you a copy. | ||
* @license GPL-3.0 | ||
* @author Gerrit Addiks <[email protected]> | ||
*/ | ||
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namespace Addiks\PHPSQL\Iterators; | ||
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use Iterator; | ||
use Addiks\PHPSQL\Iterators\DataProviderInterface; | ||
use Addiks\PHPSQL\Iterators\UsesBinaryDataInterface; | ||
use IteratorAggregate; | ||
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class AliasedResourceIterator implements Iterator, DataProviderInterface, UsesBinaryDataInterface | ||
{ | ||
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public function __construct( | ||
DataProviderInterface $dataProvider, | ||
$alias | ||
) { | ||
$this->dataProvider = $dataProvider; | ||
$this->alias = $alias; | ||
} | ||
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/** | ||
* @var DataProviderInterface | ||
*/ | ||
protected $dataProvider; | ||
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/** | ||
* @var string | ||
*/ | ||
protected $alias; | ||
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/** | ||
* | ||
* @return TableSchema | ||
*/ | ||
public function getTableSchema() | ||
{ | ||
/* @var $dataProvider DataProviderInterface */ | ||
$dataProvider = $this->dataProvider; | ||
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return $dataProvider->getTableSchema(); | ||
} | ||
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public function doesRowExists($rowId = null) | ||
{ | ||
/* @var $dataProvider DataProviderInterface */ | ||
$dataProvider = $this->dataProvider; | ||
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return $dataProvider->doesRowExists($rowId); | ||
} | ||
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public function getRowData($rowId = null) | ||
{ | ||
/* @var $dataProvider DataProviderInterface */ | ||
$dataProvider = $this->dataProvider; | ||
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return $dataProvider->getRowData($rowId); | ||
} | ||
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public function getCellData($rowId, $columnId) | ||
{ | ||
/* @var $dataProvider DataProviderInterface */ | ||
$dataProvider = $this->dataProvider; | ||
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return $dataProvider->getCellData($rowId, $columnId); | ||
} | ||
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public function tell() | ||
{ | ||
/* @var $dataProvider DataProviderInterface */ | ||
$dataProvider = $this->dataProvider; | ||
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return $dataProvider->tell(); | ||
} | ||
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public function seek($rowId) | ||
{ | ||
/* @var $dataProvider DataProviderInterface */ | ||
$dataProvider = $this->dataProvider; | ||
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return $dataProvider->seek($rowId); | ||
} | ||
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public function count() | ||
{ | ||
/* @var $dataProvider DataProviderInterface */ | ||
$dataProvider = $this->dataProvider; | ||
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return $dataProvider->count(); | ||
} | ||
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public function usesBinaryData() | ||
{ | ||
/* @var $dataProvider DataProviderInterface */ | ||
$dataProvider = $this->dataProvider; | ||
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/* @var $usesBinaryData boolean */ | ||
$usesBinaryData = false; | ||
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if ($dataProvider instanceof UsesBinaryDataInterface) { | ||
$usesBinaryData = $dataProvider->usesBinaryData(); | ||
} | ||
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return $usesBinaryData; | ||
} | ||
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public function convertDataRowToStringRow(array $row) | ||
{ | ||
/* @var $dataProvider DataProviderInterface */ | ||
$dataProvider = $this->dataProvider; | ||
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/* @var $convertedRow array */ | ||
$convertedRow = $row; | ||
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#if ($dataProvider instanceof UsesBinaryDataInterface && $dataProvider->usesBinaryData()) { | ||
# $convertedRow = $dataProvider->convertDataRowToStringRow($row); | ||
#} | ||
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return $convertedRow; | ||
} | ||
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public function convertStringRowToDataRow(array $row) | ||
{ | ||
/* @var $dataProvider DataProviderInterface */ | ||
$dataProvider = $this->dataProvider; | ||
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/* @var $convertedRow array */ | ||
$convertedRow = $row; | ||
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if ($dataProvider instanceof UsesBinaryDataInterface && $dataProvider->usesBinaryData()) { | ||
$convertedRow = $dataProvider->convertStringRowToDataRow($row); | ||
} | ||
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return $convertedRow; | ||
} | ||
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public function rewind() | ||
{ | ||
/* @var $dataProvider DataProviderInterface */ | ||
$dataProvider = $this->dataProvider; | ||
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if ($dataProvider instanceof IteratorAggregate) { | ||
$dataProvider = $dataProvider->getIterator(); | ||
} | ||
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if ($dataProvider instanceof Iterator) { | ||
$dataProvider->rewind(); | ||
} | ||
} | ||
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public function valid() | ||
{ | ||
/* @var $dataProvider DataProviderInterface */ | ||
$dataProvider = $this->dataProvider; | ||
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if ($dataProvider instanceof IteratorAggregate) { | ||
$dataProvider = $dataProvider->getIterator(); | ||
} | ||
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if ($dataProvider instanceof Iterator) { | ||
return $dataProvider->valid(); | ||
} | ||
} | ||
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public function key() | ||
{ | ||
/* @var $dataProvider DataProviderInterface */ | ||
$dataProvider = $this->dataProvider; | ||
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if ($dataProvider instanceof IteratorAggregate) { | ||
$dataProvider = $dataProvider->getIterator(); | ||
} | ||
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if ($dataProvider instanceof Iterator) { | ||
return $dataProvider->key(); | ||
} | ||
} | ||
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public function current() | ||
{ | ||
/* @var $row array */ | ||
$row = null; | ||
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/* @var $dataProvider DataProviderInterface */ | ||
$dataProvider = $this->dataProvider; | ||
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/* @var $alias string */ | ||
$alias = $this->alias; | ||
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/* @var $iterator Iterator */ | ||
$iterator = $dataProvider; | ||
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if ($iterator instanceof IteratorAggregate) { | ||
$iterator = $iterator->getIterator(); | ||
} | ||
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if ($dataProvider instanceof Iterator) { | ||
$row = $dataProvider->current(); | ||
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if ($dataProvider instanceof UsesBinaryDataInterface && $dataProvider->usesBinaryData()) { | ||
$row = $dataProvider->convertDataRowToStringRow($row); | ||
} | ||
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/* @var $newRow array */ | ||
$newRow = $row; | ||
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foreach ($row as $key => $value) { | ||
$newRow["{$alias}.{$key}"] = $value; | ||
} | ||
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$row = $newRow; | ||
} | ||
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return $row; | ||
} | ||
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public function next() | ||
{ | ||
/* @var $dataProvider DataProviderInterface */ | ||
$dataProvider = $this->dataProvider; | ||
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if ($dataProvider instanceof IteratorAggregate) { | ||
$dataProvider = $dataProvider->getIterator(); | ||
} | ||
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if ($dataProvider instanceof Iterator) { | ||
$dataProvider->next(); | ||
} | ||
} | ||
} |
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