[jboss-jira] [JBoss JIRA] Commented: (JBRULES-2240) True modify

[ https://jira.jboss.org/jira/browse/JBRULES-2240?page=com.atlassian.jira.p... ] Geoffrey De Smet commented on JBRULES-2240: ------------------------------------------- This can potentially give a huge performance boost, especially in statefull environments. One such case this the 2 accumulates in a single rule case: <conan> when the first accumulate is updated <conan> the second accumulate has it's memory wiped <ge0ffrey> ouch <conan> because the first one says I'm re-calcuating this <conan> so go to any child nodes for all my propagations and remove them <ge0ffrey> So drools doesn't detect that the second accumulate does not depend on the first? That there's no correlation? <ge0ffrey> That the result of the first accumulate is not used in calculation for the second? <conan> doesn't matter <conan> it's a chain of tuples remember <conan> if you break the parent <conan> then everything below is retracted <ge0ffrey> would true modify fix this? <conan> think about it a second <conan> it's a chain of tuples <conan> the second, cannot exist without hte first <conan> if I need to re-calculate the first <conan> the nthe second cannot exist. <conan> ge0ffrey: true modify will improve this, yes. <ge0ffrey> because then the second would not need to be retracted if the first is modified <conan> in true modify if the first one was true and contineus to be true <conan> whiel it's evaluated <conan> it doesn't destroy the second one <ge0ffrey> unless its correlated <conan> if hte first one is false <conan> the second one will need to be destroyed But there are many more cases where true modify can have huge impact on performance. -- This message is automatically generated by JIRA. - If you think it was sent incorrectly contact one of the administrators: https://jira.jboss.org/jira/secure/Administrators.jspa - For more information on JIRA, see: http://www.atlassian.com/software/jira