CODEWITHSUNDEEP
javadroolsrule-engine
Ferenku
Ferenku

Reputation: 28

drools package name (Fluent api)

I am trying to create rules in java by using the Fluent Api. Actually I have successfully created rules in a way I like, however I could not find a way to create a rule without adding a package name.

Java Code:

PackageDescr pkg = DescrFactory.newPackage()
   .name("org.drools.example")
   .newRule().name("Xyz")
       .attribute("ruleflow-grou","bla")
   .lhs()
       .and()
           .pattern("Foo").id( "$foo", false ).constraint("bar==baz").constraint("x>y").end()
           .not().pattern("Bar").constraint("a+b==c").end().end()
       .end()
   .end()
   .rhs( "System.out.println();" ).end()
   .getDescr();

DrlDumper dumper = new DrlDumper();
String drl       = dumper.dump(pkg);

DRL File:

package org.drools.example  ---> I do not want this to be included

rule "Xyz"
    ruleflow-grou bla
when
    (
    $foo : Foo( bar==baz, x>y )  and
    not( 
    Bar( a+b==c )   ) ) 
then
System.out.println();
end

Thanks in advance.

Note: I am using Drools 7.3.0 which was installed default by eclipse

Upvotes: 1

Views: 895

Answers (1)

Esteban Aliverti
Esteban Aliverti

Reputation: 6322

What you can do is to reuse the same PackageDescrBuilder for all your rules. After you are done with one rule, just call end().newRule() to start with your other rule:

PackageDescr pkg = DescrFactory.newPackage()
  .name("org.drools.example")
    .newRule().name("Rule 1")
      .attribute("ruleflow-grou","bla")
      .lhs()
        .and()
          .pattern("Foo").id( "$foo", false).constraint("bar==baz").constraint("x>y")
          .end()
          .not().pattern("Bar").constraint("a+b==c")
          .end().end()
        .end()
      .end()
    .rhs( "System.out.println();" ).end()
    .newRule().name("Rule 2")              // <--- Here starts the new rule
      .lhs()...end()
      .rhs()...end()
.getDescr();

Hope it helps,

Upvotes: 0

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