I suspect your use of lock-on-active.<br><br>Expert's documentation states: "Whenever ... an agenda-group receives the focus, any rule within that group that has lock-on-active set to true will not be activated any more; irrespective of the origin of the update, the activation of a matching rule is discarded". Both rules are in the default MAIN agenda group so when the first inserts a new Price the update to WM (insert in your case) is not visible to the other rule. Inserting a new Price before calling fireAllRules or commenting out the price constraint in the LHS alters the Facts\Patterns needing to be matched for activation to occur.<br>
<br>So, try removing lock-on-active (or making the two rules in different agenda groups).<br><br>With kind regards,<br><br>Mike<br><br><div class="gmail_quote">On 8 March 2011 09:53, FrankVhh <span dir="ltr"><<a href="mailto:frank.vanhoenshoven@agserv.eu">frank.vanhoenshoven@agserv.eu</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;">Hi all,<br>
<br>
Since yesterday, I am having a problem with reading inserted objects from<br>
memory. I don't know why it does not go as planned, because it should be<br>
quite straightforward. It is getting boring to stare at the code, so maybe<br>
one of you can detect an error.<br>
<br>
There are 2 kinds of rules. One kind inserts price objects into working<br>
memory (as in example 1). THe other kind detects whether the price exists<br>
and adapts it to a product (as in example 2).<br>
<br>
Example 1 seems to work, but the engine does not seem to recognize them as a<br>
Price object. All original price attributes of the products remain unchanged<br>
unless:<br>
- I manually insert a Prce object before calling fireAllRules()<br>
or<br>
- Checking for an existing price is commented out in the LHS<br>
<br>
Removing constraints from $price (just checking for existance of a price)<br>
does not help.<br>
<br>
Any idea what has been going wrong?<br>
<br>
Thanks in advance.<br>
<br>
==============Example 1=================<br>
rule "Prices_17"<br>
<br>
lock-on-active true<br>
when<br>
then<br>
Price $price = new Price();<br>
$price.setName("Blue autumn");<br>
$price.setPrice(6);<br>
insert($price);<br>
System.out.println("Price " + $price.getName() + " inserted");<br>
end<br>
=============Example of usage=========================<br>
<br>
rule "Products_36"<br>
<br>
lock-on-active true<br>
when<br>
$product: Product(colour == "Blue")<br>
Season(season == Season.AUTUMN)<br>
$price: Price(name == "Blue autumn")<br>
then<br>
$product.setPrice($price.getPrice());<br>
update($product);<br>
System.out.println("Rule executed");<br>
end<br>
===================================================<br>
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