If you take a look at the Verifier it goes through the Drools AST with a visitor pattern.
It starts by using getting the PackageDescr using DrlParser, this uses Drools internals so be warned that it might change in the future.

  Reader drlReader = new InputStreamReader( stream );
  PackageDescr descr = new DrlParser().parse( drlReader );

After that it goes through the PackageDescr using PackageDescrVisitor. RuleDescrVisitor shows how to get the condition part from each rule.

https://github.com/droolsjbpm/drools/blob/master/drools-verifier/src/main/java/org/drools/verifier/visitor/PackageDescrVisitor.java
https://github.com/droolsjbpm/drools/blob/master/drools-verifier/src/main/java/org/drools/verifier/visitor/RuleDescrVisitor.java

Toni


On Oct 3, 2011, at 8:11 PM, Mark Proctor wrote:

On 03/10/2011 18:03, Wolfgang Laun wrote:
A condition does not have a "name", as you write; values of the cells
below a condition are (usually) literals.

There is no API for extracting parts of a spreadsheet. You can look at
the Drools source code (in the packages org.drools.decisiontable and
.../parser) and write whatever you need - it is not too difficult.
You can also look at drools-verifier, as that shows ho to analyse
resulting rule fragments.

Mark

-W


On 3 October 2011 17:05, RaviCKota<Ravi.Kota@wellsfargo.com>  wrote:
Hi All, for suppose I have a DecisionTable like below

CONDITION               ACTION
-----------------------------
COND1                     ACTION1
COND2                     ACTION2
COND3                     ACTION3
-----------------------------

This is just a representation of the DecisionTable. So I need to retrieve
all the conditions and store them into a Collection like Set. Does Drools
provide any such feature.

We load the drools as below
PackageBuilder builder = new PackageBuilder();
builder.addPackageFromDrl(new StringReader(drl)); //drl is the filepath of
decisiontable excel

// add the package to a rulebase (deploy the rule package).
RuleBase ruleBase = RuleBaseFactory.newRuleBase();
ruleBase.addPackage(builder.getPackage());

I tried to look into api of RuleBase, tried to get the packages, Rules,
Consequence, etc etc, but could not find any method, that gets me the
condition name.

When I tried to do
Package[] packages = rulebase.getPackages();

for(Package pack : packages){
System.out.println("Package Name is : "+pack.getName());
Rule[] rules = pack.getRules();
for(Rule rule : rules){
System.out.println("Rule name is : "+rule.getName());

All I get is some representation of each row, but I'm specifically looking
for the value of the first column (CONDITION) for each rule.

Please offer some guidance here.

--
View this message in context: http://drools.46999.n3.nabble.com/Is-it-possible-to-retrieve-the-collection-of-Conditions-from-DecisionTable-tp3390026p3390026.html
Sent from the Drools: User forum mailing list archive at Nabble.com.
_______________________________________________
rules-users mailing list
rules-users@lists.jboss.org
https://lists.jboss.org/mailman/listinfo/rules-users

_______________________________________________
rules-users mailing list
rules-users@lists.jboss.org
https://lists.jboss.org/mailman/listinfo/rules-users




_______________________________________________
rules-users mailing list
rules-users@lists.jboss.org
https://lists.jboss.org/mailman/listinfo/rules-users