OK, unless I'm missing something else you should be able to do something like this:-<br><br><span style="font-family: courier new,monospace;">rule "setup superset - Rule 1"</span><br style="font-family: courier new,monospace;">
<span style="font-family: courier new,monospace;"> when</span><br style="font-family: courier new,monospace;"><span style="font-family: courier new,monospace;"> then</span><br style="font-family: courier new,monospace;">
<span style="font-family: courier new,monospace;"> Element ss = new Element("Super set - Rule 1", 1, 2, 3);</span><br style="font-family: courier new,monospace;"><span style="font-family: courier new,monospace;"> insert(ss);<br>
</span><span style="font-family: courier new,monospace;">end</span><br style="font-family: courier new,monospace;"><br style="font-family: courier new,monospace;"><span style="font-family: courier new,monospace;">rule "rule 1"</span><br style="font-family: courier new,monospace;">
<span style="font-family: courier new,monospace;"> when</span><br style="font-family: courier new,monospace;"><span style="font-family: courier new,monospace;"> $f : Fact()</span><br style="font-family: courier new,monospace;">
<span style="font-family: courier new,monospace;">
Element(name="Super set - Rule 1", </span><span style="font-family: courier new,monospace;">$f.</span><span style="font-family: courier new,monospace;">numbers subsetOf </span><span style="font-family: courier new,monospace;"></span><span style="font-family: courier new,monospace;">numbers)</span><br style="font-family: courier new,monospace;">
<span style="font-family: courier new,monospace;"> then</span><br style="font-family: courier new,monospace;"><span style="font-family: courier new,monospace;"> //Do something</span><br style="font-family: courier new,monospace;">
<span style="font-family: courier new,monospace;">end</span><br><br>This uses Wolfgang's Element Class from his example creating custom operators and assumes Fact exposes a "numbers" property which returns a Collection. This remains untested but I have no reason to doubt Wolfgang.<br>
<br>With kind regards,<br><br>Mike<br><br><br> <br><br><div class="gmail_quote">2010/10/13 Kumar Pandey <span dir="ltr"><<a href="mailto:kumar.pandey@gmail.com">kumar.pandey@gmail.com</a>></span><br><blockquote class="gmail_quote" style="margin: 0pt 0pt 0pt 0.8ex; border-left: 1px solid rgb(204, 204, 204); padding-left: 1ex;">
Well the problem is in forming the DRL :)<div>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.</div>
<div><br></div><div><br></div><div>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.</div><div><br></div><div>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. </div>
<div><br><div><div>package com.test</div><div>import com.rule.OfferFact;</div><div>global java.util.List list</div><div><br></div><div>rule rule_not_sub_set</div><div>when</div><div> $context : Fact()</div><div> eval($context.isNotSubset("SINGER","DANCER", "DOCTOR"))</div>
<div>then</div><div> list.add(drools.getRule().getName());</div><div>end</div></div><div><div></div><div class="h5"><div><br><br><div class="gmail_quote">2010/10/13 Michael Anstis <span dir="ltr"><<a href="mailto:michael.anstis@gmail.com" target="_blank">michael.anstis@gmail.com</a>></span><br>
<blockquote class="gmail_quote" style="margin: 0pt 0pt 0pt 0.8ex; border-left: 1px solid rgb(204, 204, 204); padding-left: 1ex;">Not as clear as I'd hoped; can you provide an actual rule DRL?<br><br><div class="gmail_quote">
2010/10/13 Kumar Pandey <span dir="ltr"><<a href="mailto:kumar.pandey@gmail.com" target="_blank">kumar.pandey@gmail.com</a>></span><div>
<div></div><div><br>
<blockquote class="gmail_quote" style="margin: 0pt 0pt 0pt 0.8ex; border-left: 1px solid rgb(204, 204, 204); padding-left: 1ex;">Michael<div> Here are some examples</div><div> </div><div>Rule1 has "str1", "Str2", "Str3"</div>
<div><br></div><div>Rule2 has "str2", "Str3", "Str5", "Str6", "Str7"</div>
<div> </div><div>Rule3 has "str1", "Str3", "Str6"</div><div><br></div><div>etc.</div><div><br></div><div>With fact1 that has "str1", "Str3" , since this is subset of values in Rule1 and Rule3, they should not fire but Rule2 should fire</div>
<div><br></div><div>With fact2 that has "str2", "Str6", "Str7", Rule 2 should not fire and Rule1 and Rule3 should fire. </div><div><br></div><div>Hope this is clear.</div><div><br></div><div>
Thanks</div><div>Kumar<br><br><div class="gmail_quote">2010/10/13 Michael Anstis <span dir="ltr"><<a href="mailto:michael.anstis@gmail.com" target="_blank">michael.anstis@gmail.com</a>></span><br><blockquote class="gmail_quote" style="margin: 0pt 0pt 0pt 0.8ex; border-left: 1px solid rgb(204, 204, 204); padding-left: 1ex;">
<div><div></div><div>
Thanks, please provide a specific example rule too.<div><br></div><div>Don't forget to keep your posts to the mailing list for the good of the community.<div><div></div><div><br><br><div class="gmail_quote">
On 12 October 2010 22:18, Kumar Pandey <span dir="ltr"><<a href="mailto:kumar.pandey@gmail.com" target="_blank">kumar.pandey@gmail.com</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin: 0pt 0pt 0pt 0.8ex; border-left: 1px solid rgb(204, 204, 204); padding-left: 1ex;">Michale<div> Thanks for the response.</div><div>Here's the link for the thread .</div>
<div><br></div><div><a href="http://drools-java-rules-engine.46999.n3.nabble.com/Check-if-fact-is-subset-of-items-in-the-rule-td1680013.html#a1680013" target="_blank">http://drools-java-rules-engine.46999.n3.nabble.com/Check-if-fact-is-subset-of-items-in-the-rule-td1680013.html#a1680013</a></div>
<div><br></div><div>and the original about matching strings in two arrays.</div><div><a href="http://drools-java-rules-engine.46999.n3.nabble.com/Matching-strings-in-two-arrays-td1602511.html#a1602511" target="_blank">http://drools-java-rules-engine.46999.n3.nabble.com/Matching-strings-in-two-arrays-td1602511.html#a1602511</a></div>
<div><br></div><div><br></div><div>My use case is that I could have hundreds of rule and each rule could have its own set of strings.</div><div>A fact object is run through these rules to see which ones are fired.</div><div>
One of the condition to check is that the a list in the fact is not a subset of list in the rule. </div><div>That is fire the rule only if list in fact is not a subset of list in rule.</div><div> </div><div>Thanks</div><div>
Kumar</div><div><br><br><div class="gmail_quote">On Tue, Oct 12, 2010 at 12:38 PM, Michael Anstis <span dir="ltr"><<a href="mailto:michael.anstis@gmail.com" target="_blank">michael.anstis@gmail.com</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin: 0pt 0pt 0pt 0.8ex; border-left: 1px solid rgb(204, 204, 204); padding-left: 1ex;">
OK, I admit I don't have the original thread anymore.<br><br>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.<br>
<br>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.<br><br><div class="gmail_quote">On 12 October 2010 17:23, <span dir="ltr"><<a href="mailto:kumar.pandey@gmail.com" target="_blank">kumar.pandey@gmail.com</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin: 0pt 0pt 0pt 0.8ex; border-left: 1px solid rgb(204, 204, 204); padding-left: 1ex;"><quote author='Michael Anstis-2'><div><br>
Wolfgang gave a great solution.<br></div>
</quote><br>
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.<br>
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