[CAY-2232] Proper conversion to String for new functional expressions

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 4.0.M5
• Component/s: Core Library
• Assignee: Nikita Timofeev
• Reporter: Nikita Timofeev
• Created: 15/Feb/17 14:58
• Updated: 16/Feb/17 11:43
• Resolved: 16/Feb/17 11:43

Description

Functional expressions (scalar and aggregate functions calls) return something unusable as a result of toString() call.
This should be fixed as Modeler use this method to serialize expressions (and effectively this issue makes this expressions unusable there)