Description
BindableMongoExpression#wrapJsonIfNecessary detects if the input expression already contains the opening and closing braces, and if not they are added. This is useful for one-liners, but it doesn't work as well in other situations.
When using text blocks, it is common to put the closing delimiter on a new line (see the examples in JEP 378 and various tests in this repository), which means the last character of the string will be a line terminator. BindableMongoExpression checks only the last character for }, and if it doesn't match the whole expression is wrapped as { + json + }.
This results in the following:
MongoExpression.create("""
{
$toUpper: $last_name
}
""");to be parsed as:
{{
$toUpper: $last_name
}
}which is obviously not a valid json. Trimming could be applied to the input expression to avoid this problem.
If the issue is accepted, I can submit a PR.