/**
* Set where to fetch which columns
*
* This notifies the repository about each desired query column.
*
* @param mixed $target The target from which to fetch the columns
* @param array $columns If null or an empty array, all columns will be fetched
*
* @return $this
*/
public function from($target, array $columns = null)
{
$target = $this->repository->requireTable($target, $this);
$this->query = $this->repository->getDataSource()->select()->from($target);
$this->query->columns($this->prepareQueryColumns($target, $columns));
$this->target = $target;
return $this;
}
/**
* Validate that the requested table exists
*
* This will prepend the datasource's table prefix and will apply the table's alias, if any.
*
* @param string $table The table to validate
* @param RepositoryQuery $query An optional query to pass as context
* (unused by the base implementation)
*
* @return array|string
*
* @throws ProgrammingError In case the given table does not exist
*/
public function requireTable($table, RepositoryQuery $query = null)
{
$virtualTable = null;
$statementColumns = $this->getStatementColumns();
if (!isset($statementColumns[$table])) {
$newTable = parent::requireTable($table);
if ($newTable !== $table) {
$virtualTable = $table;
}
$table = $newTable;
}
return $this->prependTablePrefix($this->applyTableAlias($table, $virtualTable));
}
/**
* Validate that the requested document type exists
*
* @param string|array $documentType The document type to validate
* @param RepositoryQuery $query An optional query to pass as context
*
* @return array The document type with its index being applied
*/
public function requireTable($documentType, RepositoryQuery $query = null)
{
if ($query !== null) {
$query->getQuery()->setIndices(array($this->getIndex()));
}
return parent::requireTable($this->extractDocumentType($documentType), $query);
}
