51 lines
1.1 KiB
PHP
51 lines
1.1 KiB
PHP
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<?php
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/**
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* Created by PhpStorm.
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* User: StefanWarnat
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* Date: 26.03.2019
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* Time: 18:23
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*/
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namespace Workflow\BPMN;
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class Flow
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{
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private static $cache = array();
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private static $ids = array();
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public static function getId($from, $to) {
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if(!isset(self::$cache[$from])) {
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self::$cache[$from] = array();
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}
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if(!isset(self::$cache[$from][$to])) {
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self::$cache[$from][$to] = 'SequenceFlow_'.self::getFreeId();
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}
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return self::$cache[$from][$to];
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}
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private static function random_strings($length_of_string)
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{
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// String of all alphanumeric character
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$str_result = '0123456789abcdefghijklmnopqrstuvwxyz';
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// Shufle the $str_result and returns substring
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// of specified length
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return substr(str_shuffle($str_result),
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0, $length_of_string);
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}
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public static function getFreeId() {
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do {
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$id = self::random_strings(8);
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} while(isset(self::$ids[$id]));
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return $id;
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}
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public static function getAll() {
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return self::$cache;
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}
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}
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