/
IteratorFilter.php
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/
IteratorFilter.php
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<?php
namespace ByJG\AnyDataset\Core;
use ByJG\AnyDataset\Core\Enum\Relation;
class IteratorFilter
{
/**
* @var array
*/
private $filters;
/**
* IteratorFilter Constructor
*/
public function __construct()
{
$this->filters = [];
}
/**
* @return IteratorFilter
*/
public static function getInstance()
{
return new IteratorFilter();
}
/**
* @param array $array
* @return Row[]
*/
public function match($array)
{
$returnArray = [];
foreach ($array as $sr) {
if ($this->evalString($sr)) {
$returnArray[] = $sr;
}
}
return $returnArray;
}
/**
* Get the filter
*
* @param IteratorFilterFormatter $formatter
* @param string $tableName
* @param array $params
* @param string $returnFields
* @return string
*/
public function format(IteratorFilterFormatter $formatter, $tableName = null, &$params = [], $returnFields = "*")
{
return $formatter->format($this->filters, $tableName, $params, $returnFields);
}
/**
* @param Row $singleRow
* @return bool
*/
private function evalString(Row $singleRow)
{
$result = [];
$finalResult = false;
$pos = 0;
$result[0] = true;
foreach ($this->filters as $filter) {
if (($filter[0] == ")") || ($filter[0] == " or ")) {
$finalResult = $finalResult || $result[$pos];
$result[++$pos] = true;
}
$name = $filter[1];
$relation = $filter[2];
$value = $filter[3];
$field = [$singleRow->get($name)];
foreach ($field as $valueparam) {
switch ($relation) {
case Relation::EQUAL:
$result[$pos] = $result[$pos] && ($valueparam == $value);
break;
case Relation::GREATER_THAN:
$result[$pos] = $result[$pos] && ($valueparam > $value);
break;
case Relation::LESS_THAN:
$result[$pos] = $result[$pos] && ($valueparam < $value);
break;
case Relation::GREATER_OR_EQUAL_THAN:
$result[$pos] = $result[$pos] && ($valueparam >= $value);
break;
case Relation::LESS_OR_EQUAL_THAN:
$result[$pos] = $result[$pos] && ($valueparam <= $value);
break;
case Relation::NOT_EQUAL:
$result[$pos] = $result[$pos] && ($valueparam != $value);
break;
case Relation::STARTS_WITH:
$result[$pos] = $result[$pos] && (strpos(is_null($valueparam) ? "" : $valueparam, $value) === 0);
break;
default: // Relation::CONTAINS:
$result[$pos] = $result[$pos] && (strpos(is_null($valueparam) ? "" : $valueparam, $value) !== false);
break;
}
}
}
$finalResult = $finalResult || $result[$pos];
return $finalResult;
}
/**
* @param string $name Field name
* @param int $relation Relation enum
* @param string $value Field string value
* @return IteratorFilter
* @desc Add a single string comparison to filter.
*/
public function addRelation($name, $relation, $value)
{
$this->filters[] = [" and ", $name, $relation, $value];
return $this;
}
/**
* @param string $name Field name
* @param int $relation Relation enum
* @param string $value Field string value
* @return IteratorFilter
* @desc Add a single string comparison to filter. This comparison use the OR operator.
*/
public function addRelationOr($name, $relation, $value)
{
$this->filters[] = [" or ", $name, $relation, $value];
return $this;
}
/**
* Add a "("
* @return IteratorFilter
*/
public function startGroup()
{
$this->filters[] = ["(", "", "", ""];
return $this;
}
/**
* Add a ")"
* @return IteratorFilter
*/
public function endGroup()
{
$this->filters[] = [")", "", "", ""];
return $this;
}
/**
* @return array
*/
public function getRawFilters()
{
return $this->filters;
}
}