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<?php |
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/* |
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* This file is part of YaEtl |
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* (c) Fabrice de Stefanis / https://github.com/fab2s/YaEtl |
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* This source file is licensed under the MIT license which you will |
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* find in the LICENSE file or at https://opensource.org/licenses/MIT |
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*/ |
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namespace fab2s\YaEtl\Laravel\Loaders; |
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use fab2s\NodalFlow\NodalFlowException; |
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use fab2s\YaEtl\Loaders\LoaderAbstract; |
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use Illuminate\Database\Query\Builder; |
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use Illuminate\Support\Facades\DB; |
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/** |
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* Class DbLoader |
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*/ |
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class DbLoader extends LoaderAbstract |
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{ |
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/** |
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* Array of fields used in the where clause (select and update) |
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* |
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* @var array |
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*/ |
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protected $whereFields; |
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/** |
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* The query object |
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* |
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* @var Builder |
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*/ |
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protected $loadQuery; |
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/** |
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* Instantiate the DbLoader |
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* |
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* @param Builder|null $loadQuery |
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* |
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* @throws NodalFlowException |
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*/ |
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public function __construct(?Builder $loadQuery = null) |
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{ |
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if ($loadQuery !== null) { |
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$this->setLoadQuery($loadQuery); |
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} |
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parent::__construct(); |
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} |
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/** |
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* Set the Load query |
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* |
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* @param Builder $loadQuery |
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* |
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* @return static |
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*/ |
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public function setLoadQuery(Builder $loadQuery): self |
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{ |
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$this->loadQuery = $loadQuery; |
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return $this; |
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} |
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/** |
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* Set proper WHERE fields |
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* |
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* @param array $whereFields |
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* |
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* @return static |
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*/ |
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public function setWhereFields(array $whereFields): self |
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{ |
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$this->whereFields = $whereFields; |
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return $this; |
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} |
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/** |
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* This method does not implement multi inserts and will |
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* perform one query per record, which is also why flush |
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* is left alone |
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* We assume here that transformed data is a name/value pair |
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* array of fields to update/insert |
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* |
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* @param array $param The record to load |
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* |
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* @return mixed|void |
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*/ |
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public function exec($param = null) |
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{ |
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// clone query object in order to prevent where clause stacking |
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$loadQuery = clone $this->loadQuery; |
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$whereClause = \array_intersect_key($param, \array_flip((array) $this->whereFields)); |
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// let's be atomic while we're at it (and where applicable ...) |
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// btw, multi insert are not necessarily that faster in real world |
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// situation where there is a lot of updates and you need ot keep |
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// atomicity using transactions |
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DB::transaction(function () use ($loadQuery, $whereClause, $param) { |
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if (!empty($whereClause) && $loadQuery->where($whereClause)->sharedLock()->exists()) { |
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$update = \array_diff_key($param, $whereClause); |
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$loadQuery->update($update); |
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} else { |
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$loadQuery->insert($param); |
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} |
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}); |
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} |
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} |
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fab2s /
YaEtl
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