public function visitSelect(Segments\Select $query)
{
$elementProjection = $query->getProjectionFunction();
// Ensure that the return values in the format:
// [
// 'alias' => <expr>,
// ...
// ]
$returnExpression = $elementProjection->getReturnValueExpression();
if (!$returnExpression instanceof O\ArrayExpression) {
throw new PinqDemoSqlException('Cannot select non array expression');
}
$originalSelect = $this->compilation->sql;
$columns = [];
foreach ($returnExpression->getItems() as $itemExpression) {
if (!$itemExpression->getKey() instanceof O\ValueExpression) {
throw new PinqDemoSqlException('Select arrays cannot have variable keys');
}
$key = $itemExpression->getKey()->getValue();
$columns[] = $this->compilation->expressionCompiler->compile($itemExpression->getValue(), $elementProjection) . ' AS ' . $key;
}
$this->compilation->sql = 'SELECT ';
$this->compilation->sql .= implode(', ', $columns);
$this->compilation->sql .= " FROM ({$originalSelect}) AS {$this->compilation->tableName}";
}
public function visitSelect(Segments\Select $query)
{
$this->traversable = $this->traversable->select($this->resolvedParameters[$query->getProjectionFunction()->getCallableId()]);
}
public function visitSelect(Segments\Select $query)
{
$this->compilation->append('Map according to: ');
$this->compilation->appendFunction($query->getProjectionFunction());
$this->compilation->appendLine();
}