src/Data/BizDataObj.php
protected function generateId($isBeforeInsert = true, $tableName = null, $idCloumnName = null)
    {
        // Identity type id is generated after insert is done.
        // If this method is called before insert, return null.
        if ($isBeforeInsert && $this->idGeneration == 'Identity')
            return null;

        if (!$isBeforeInsert && $this->idGeneration != 'Identity') {
            $this->errorMessage = MessageHelper::getMessage("DATA_UNABLE_GET_ID", $this->objectName);
            return false;
        }

        /* @var $genIdService genIdService */
        $genIdService = Openbizx::getService(GENID_SERVICE);
        if ($this->m_db) {
            $db = $this->m_db;
        } else {
            $db = $this->getDBConnection("READ");
        }
        $dbInfo = Openbizx::$app->getConfiguration()->getDatabaseInfo($this->databaseAliasName);
        $dbType = $dbInfo["Driver"];
        $table = $tableName ? $tableName : $this->mainTableName;
        $column = $idCloumnName ? $idCloumnName : $this->getField("Id")->column;

        try {
            $newId = $genIdService->getNewID($this->idGeneration, $db, $dbType, $table, $column);
        } catch (Exception $e) {
            $this->errorMessage = $e->getMessage();
            return false;
        }
        return $newId;
    }
protected function generateId($isBeforeInsert = true, $tableName = null, $idCloumnName = null)
    {
        // Identity type id is generated after insert is done.
        // If this method is called before insert, return null.
        if ($isBeforeInsert && $this->idGeneration == 'Identity')
            return null;

        if (!$isBeforeInsert && $this->idGeneration != 'Identity') {
            $this->errorMessage = MessageHelper::getMessage("DATA_UNABLE_GET_ID", $this->objectName);
            return false;
        }

        /* @var $genIdService genIdService */
        $genIdService = Openbizx::getService(GENID_SERVICE);
        if ($this->m_db) {
            $db = $this->m_db;
        } else {
            $db = $this->getDBConnection("READ");
        }
        $dbInfo = Openbizx::$app->getConfiguration()->getDatabaseInfo($this->databaseAliasName);
        $dbType = $dbInfo["Driver"];
        $table = $tableName ? $tableName : $this->mainTableName;
        $column = $idCloumnName ? $idCloumnName : $this->getField("Id")->column;

        try {
            $newId = $genIdService->getNewID($this->idGeneration, $db, $dbType, $table, $column);
        } catch (Exception $e) {
            $this->errorMessage = $e->getMessage();
            return false;
        }
        return $newId;
    }
Generate Id according to the IdGeneration attribute

@param boolean $isBeforeInsert
@param string $tableName
@param string $idCloumnName
@return long|string|boolean