empty belongsTo relation failing with full-null support in Lucee

[wpdebruin]

When we have an empty belongsTo relation in a quick entity it fails with full null support.
The belongsTo relation is calling the isBuilder function in qb.
The isBuilder function in QueryUtils of qb is receiving:

• an empty string with partial null support
• a null value with full null support
  So this is part of the code

        !isArray( arguments.value ) &&
        structKeyExists( arguments.value, "isBuilder" );

which will never work with null values because it will fail on the structKeyExists. I tried adding a !IsNull( arguments.value ) check but still failing, in other places I guess.

[wpdebruin]

I finally tracked down the bug for a belongsTo relation with full null support.
To get a correct result I had to add null checks for methods in both qb and quick. Methods which were failing where, in this order
qb QueryUtils.isBuilder. I added a null check before everything else
qb. QueryUtils.isNotExpression. Null check before everything else
quick BaseEntity. isNullValue. The fun thing is that this method fails on a null value if value is null param arguments.value = invoke( this, "get" & arguments.key ); will fail. So adding an IsNull(value) before everything else will solve the problem.

[elpete]

Addressed by #312, now merged into .

[elpete]

Correction: Addressed by #312, now merged into the next branch.