[rules-users] [Column(f1=='v1', f2=='v2')] vs [Column(f1=='v1') Column(f2== 'v2')]

Hi, I wonder what is the difference (performance-wise, etc) between these two constructs: Column(f1=='v1', f2=='v2') And Column(f1=='v1') Column(f2=='v2') ? Both of them should select the same 'Column' facts (where Column.f1=='v1' && Column.f2='v2'), correct? Is one construct more preferable then another one? Does JBossRules hash only the evaluation result of the 'full column' OR individual field constraints as well? From what I understand, only the full 'Column' is defined as an (alpha?) node while individual constraints within the node can not be further optimized, correct? Meaning, if I have another condition somewhere like this: Column(f1=='v1', f2=='ANOTHER_VAL') [f1=='v1'] constraint would have to be reevaluated again, while if I define constraints through two 'separate' columns and the new constraint as Column(f1=='v1) Column(f2=='ANOTHER_VAL') only the new constraint would have to be reevaluated. Do I understand it right? Thanks! Vlad