/**
* Adds the FROM part to a query.
*
* @param bool $useAlias Whether or not to alias the table
* @param string $query
*/
private function compileFrom($useAlias = true)
{
if (!$this->from) {
throw new UnexpectedValueException('Cannot compile FROM clause because there are no tables ' . 'to compile. Did you forget to call from()?');
}
$parts = [];
foreach ($this->from as $source => $alias) {
// Allow no aliasing as well, as denoted by an it key
if (!is_int($source)) {
$parts[] = $useAlias ? e\alias($source, $alias) : $source;
} else {
$parts[] = $alias;
}
}
return implode($parts, ', ');
}
/**
* Compiles the columns to select in a SELECT.
*
* @return string
*/
private function compileColumns()
{
if (!$this->select) {
$this->select = ['*'];
}
$parts = [];
foreach ($this->select as $column => $alias) {
// Allow no aliasing as well, as denoted by an it key
if (is_int($column)) {
$parts[] = e\columnize($alias, $this->alias);
} else {
$column = e\columnize($column, $this->alias);
$parts[] = e\alias($column, $alias);
}
}
return implode($parts, ', ');
}
