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<?php
namespace Laravel\Scout\Engines;
use Laravel\Scout\Builder;
abstract class Engine
{
/**
* Update the given model in the index.
*
* @param \Illuminate\Database\Eloquent\Collection $models
* @return void
*/
abstract public function update($models);
/**
* Remove the given model from the index.
*
* @param \Illuminate\Database\Eloquent\Collection $models
* @return void
*/
abstract public function delete($models);
/**
* Perform the given search on the engine.
*
* @param \Laravel\Scout\Builder $builder
* @return mixed
*/
abstract public function search(Builder $builder);
/**
* Perform the given search on the engine.
*
* @param \Laravel\Scout\Builder $builder
* @param int $perPage
* @param int $page
* @return mixed
*/
abstract public function paginate(Builder $builder, $perPage, $page);
/**
* Pluck and return the primary keys of the given results.
*
* @param mixed $results
* @return \Illuminate\Support\Collection
*/
abstract public function mapIds($results);
/**
* Map the given results to instances of the given model.
*
* @param \Laravel\Scout\Builder $builder
* @param mixed $results
* @param \Illuminate\Database\Eloquent\Model $model
* @return \Illuminate\Database\Eloquent\Collection
*/
abstract public function map(Builder $builder, $results, $model);
/**
* Map the given results to instances of the given model via a lazy collection.
*
* @param \Laravel\Scout\Builder $builder
* @param mixed $results
* @param \Illuminate\Database\Eloquent\Model $model
* @return \Illuminate\Support\LazyCollection
*/
abstract public function lazyMap(Builder $builder, $results, $model);
/**
* Get the total count from a raw result returned by the engine.
*
* @param mixed $results
* @return int
*/
abstract public function getTotalCount($results);
/**
* Flush all of the model's records from the engine.
*
* @param \Illuminate\Database\Eloquent\Model $model
* @return void
*/
abstract public function flush($model);
/**
* Create a search index.
*
* @param string $name
* @param array $options
* @return mixed
*/
abstract public function createIndex($name, array $options = []);
/**
* Delete a search index.
*
* @param string $name
* @return mixed
*/
abstract public function deleteIndex($name);
/**
* Get the results of the query as a Collection of primary keys.
*
* @param \Laravel\Scout\Builder $builder
* @return \Illuminate\Support\Collection
*/
public function keys(Builder $builder)
{
return $this->mapIds($this->search($builder));
}
/**
* Get the results of the given query mapped onto models.
*
* @param \Laravel\Scout\Builder $builder
* @return \Illuminate\Database\Eloquent\Collection
*/
public function get(Builder $builder)
{
return $this->map(
$builder, $this->search($builder), $builder->model
);
}
/**
* Get a lazy collection for the given query mapped onto models.
*
* @param \Laravel\Scout\Builder $builder
* @return \Illuminate\Database\Eloquent\Collection
*/
public function cursor(Builder $builder)
{
return $this->lazyMap(
$builder, $this->search($builder), $builder->model
);
}
}