Re: [rules-users] Check if fact is subset of items in the rule

Well the problem is in forming the DRL :) My use case is each rule represents an item with its specific property. Fact is a user property and I want to filter the items for this user based on the users incoming property as facts. I have been able to get it working like so but eval is not optimum for Rete. I was hoping for a better solution that would utilize the Rete optimization. Here's my unit test DRL. Note, I have a isNotSubset method in my fact object and I'm getting the list from rule and doing a check. package com.test import com.rule.OfferFact; global java.util.List list rule rule_not_sub_set when $context : Fact() eval($context.isNotSubset("SINGER","DANCER", "DOCTOR")) then list.add(drools.getRule().getName()); end 2010/10/13 Michael Anstis <michael.anstis(a)gmail.com&gt; > Not as clear as I'd hoped; can you provide an actual rule DRL? > > 2010/10/13 Kumar Pandey <kumar.pandey(a)gmail.com&gt; > > Michael >> Here are some examples >> >> Rule1 has "str1", "Str2", "Str3" >> >> Rule2 has "str2", "Str3", "Str5", "Str6", "Str7" >> >> Rule3 has "str1", "Str3", "Str6" >> >> etc. >> >> With fact1 that has "str1", "Str3" , since this is subset of values in >> Rule1 and Rule3, they should not fire but Rule2 should fire >> >> With fact2 that has "str2", "Str6", "Str7", Rule 2 should not fire and >> Rule1 and Rule3 should fire. >> >> Hope this is clear. >> >> Thanks >> Kumar >> >> 2010/10/13 Michael Anstis <michael.anstis(a)gmail.com&gt; >> >>> Thanks, please provide a specific example rule too. >>> >>> Don't forget to keep your posts to the mailing list for the good of the >>> community. >>> >>> >>> On 12 October 2010 22:18, Kumar Pandey <kumar.pandey(a)gmail.com&gt; wrote: >>> >>>> Michale >>>> Thanks for the response. >>>> Here's the link for the thread . >>>> >>>> >>>> http://drools-java-rules-engine.46999.n3.nabble.com/Check-if-fact-is-subs... >>>> >>>> and the original about matching strings in two arrays. >>>> >>>> http://drools-java-rules-engine.46999.n3.nabble.com/Matching-strings-in-t... >>>> >>>> >>>> My use case is that I could have hundreds of rule and each rule could >>>> have its own set of strings. >>>> A fact object is run through these rules to see which ones are fired. >>>> One of the condition to check is that the a list in the fact is not a >>>> subset of list in the rule. >>>> That is fire the rule only if list in fact is not a subset of list in >>>> rule. >>>> >>>> Thanks >>>> Kumar >>>> >>>> >>>> On Tue, Oct 12, 2010 at 12:38 PM, Michael Anstis < >>>> michael.anstis(a)gmail.com&gt; wrote: >>>> >>>>> OK, I admit I don't have the original thread anymore. >>>>> >>>>> If I am not wrong (which is always a possibility) for Wolfgang's >>>>> operator to work you'd need to externalise the superset from the rule into >>>>> WorkingMemory. You could have a rule with higher salience construct the >>>>> superset WM fact. >>>>> >>>>> If you don't mind re-posting or providing a link to the complete >>>>> thread (on Nabble or somewhere) I'll happily try to help further. >>>>> >>>>> On 12 October 2010 17:23, <kumar.pandey(a)gmail.com&gt; wrote: >>>>> >>>>>> <quote author='Michael Anstis-2'> >>>>>> >>>>>> Wolfgang gave a great solution. >>>>>> </quote> >>>>>> Don't know if I'm missing something obvious here. I have a superset >>>>>> in the rule itself. Each rule has a superset list. In this case how would I >>>>>> use Wolfgang's solution. Its comparing through two arrays in runtime. I have >>>>>> not been able to construct an array construct with specific values in the >>>>>> rule itself. >>>>>> >>>>> >>>>> >>>> >>>> >>> >>> _______________________________________________ >>> rules-users mailing list >>> rules-users(a)lists.jboss.org >>> https://lists.jboss.org/mailman/listinfo/rules-users >>> >>> >> >> >> >> _______________________________________________ >> rules-users mailing list >> rules-users(a)lists.jboss.org >> https://lists.jboss.org/mailman/listinfo/rules-users >> >> > > _______________________________________________ > rules-users mailing list > rules-users(a)lists.jboss.org > https://lists.jboss.org/mailman/listinfo/rules-users > > _______________________________________________ rules-users mailing list rules-users(a)lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users