public function assembleMatchExpression(MatchExpression $expr)
{
$fields = [];
foreach ($expr->getFields() as $field) {
$fields[] = $this->assembleSegment($field);
}
switch ($expr->getSearchModifier()) {
case MatchExpression::BOOLEAN_MODE:
$modifier = ' IN BOOLEAN MODE';
break;
case MatchExpression::WITH_QUERY_EXPANSION:
$modifier = ' WITH QUERY EXPANSION';
break;
default:
$modifier = '';
}
$alias = '';
if ($expr instanceof MatchSelectExpression) {
if ($expr->hasAlias()) {
$alias = ' AS `' . $expr->getAlias() . '`';
}
}
return sprintf('MATCH (%s) AGAINST (%s%s)%s', implode(',', $fields), $this->assembleSegment($expr->getValue()), $modifier, $alias);
}
