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<?php
namespace Apptus\ESales\Connector;
use Apptus\ESales\Connector\Filters\AtomFilter;
abstract class Filter {
public final function __toString() {
return $this->buildFilterString();
}
abstract protected function buildFilterString();
protected function isAtom() {
return ($this instanceof AtomFilter);
}
protected static function buildValue($value) {
if ($value === null) {
return '\'\'';
}
return '\'' . self::escapeValue($value) . '\'';
}
private static function escapeValue($value) {
return str_replace(array ('\\', '\''), array ('\\\\', '\\\''), $value);
}
protected static function buildAttributes($attributes, $incremental) {
$str = implode(',', array_map('\Apptus\ESales\Connector\Filter::escapeAttribute', $attributes));
return $str . ($incremental ? '*:' : ':');
}
private static function escapeAttribute($attribute) {
return str_replace(array ('\\', ',', ':'), array ('\\\\', '\\,', '\\:'), $attribute);
}
}