We need an expression language for conditional creation of objects

[Vince Bickers]

variable op value

should this extend to include conjunction/disjunction and subexpressions? e.g.

(var op value and var op value) or var op value

[Vince Bickers]

Look at SpEL. Though it is seriously ugly syntax. Otherwise a simple grammar:

[Vince Bickers]

1. Start by expanding the relational operators: eq, ne, gt, lt, le, ge
2. Add the logical connectives: and, or
3. Add the logical negation: not
4. Add subexpressions: (...)
5. Consider adding arithmetic operators: mul, div, mod, add, sub
6. Consider adding bitwise operators: and, or, xor, shl, shr, cmp