Package org.drools.compiler.lang.descr

Examples of org.drools.compiler.lang.descr.RuleDescr

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        PackageDescr pkg = (PackageDescr) parse( "compilationUnit",
                                                 source );
        assertFalse( parser.getErrors().toString(),
                     parser.hasErrors() );

        RuleDescr rule = pkg.getRules().get( 0 );
        AndDescr lhs = rule.getLhs();
        assertEquals( 2,
                      lhs.getDescrs().size() );

        PatternDescr pdo1 = (PatternDescr) lhs.getDescrs().get( 0 );
        assertEquals( "pdo1",
                      pdo1.getIdentifier() );

        OrDescr or = (OrDescr) rule.getLhs().getDescrs().get( 1 );
        assertEquals( 3,
                      or.getDescrs().size() );
        for ( BaseDescr pdo2 : or.getDescrs() ) {
            assertEquals( "pdo2",
                          ((PatternDescr) pdo2).getIdentifier() );
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                                               this.getReader( "multiple_constraints.dsl" ) );

        assertFalse( parser.getErrors().toString(),
                     parser.hasErrors() );

        final RuleDescr rule = (RuleDescr) pkg.getRules().get( 0 );
        assertEquals( 2,
                      rule.getLhs().getDescrs().size() );

        PatternDescr pattern = (PatternDescr) rule.getLhs().getDescrs().get( 0 );
        assertEquals( "Person",
                      pattern.getObjectType() );

        assertEquals( 2,
                      pattern.getConstraint().getDescrs().size() );
        assertEquals( "age < 42",
                      ((ExprConstraintDescr) pattern.getConstraint().getDescrs().get( 0 )).getExpression() );
        assertEquals( "location==atlanta",
                      ((ExprConstraintDescr) pattern.getConstraint().getDescrs().get( 1 )).getExpression() );

        pattern = (PatternDescr) rule.getLhs().getDescrs().get( 1 );
        assertEquals( "Bar",
                      pattern.getObjectType() );

        assertNotNull( (String) rule.getConsequence() );

    }
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                                               this.getReader( "multiple_constraints.dsl" ) );

        assertFalse( parser.getErrors().toString(),
                     parser.hasErrors() );

        final RuleDescr rule = (RuleDescr) pkg.getRules().get( 0 );
        assertEquals( 1,
                      rule.getLhs().getDescrs().size() );

        final PatternDescr pattern = (PatternDescr) rule.getLhs().getDescrs().get( 0 );
        assertEquals( "Person",
                      pattern.getObjectType() );

        assertEquals( 2,
                      pattern.getConstraint().getDescrs().size() );
        assertEquals( "age < 42",
                      ((ExprConstraintDescr) pattern.getConstraint().getDescrs().get( 0 )).getExpression() );
        assertEquals( "location==atlanta",
                      ((ExprConstraintDescr) pattern.getConstraint().getDescrs().get( 1 )).getExpression() );

        assertNotNull( (String) rule.getConsequence() );

    }
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    @Test
    public void testBasicBinding() throws Exception {
        final PackageDescr pkg = (PackageDescr) parseResource( "compilationUnit",
                                                               "basic_binding.drl" );

        final RuleDescr ruleDescr = (RuleDescr) pkg.getRules().get( 0 );

        final AndDescr lhs = ruleDescr.getLhs();
        assertEquals( 1,
                      lhs.getDescrs().size() );
        final PatternDescr cheese = (PatternDescr) lhs.getDescrs().get( 0 );
        assertEquals( "Cheese",
                      cheese.getObjectType() );
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    @Test
    public void testBoundVariables() throws Exception {
        final PackageDescr pkg = (PackageDescr) parseResource( "compilationUnit",
                                                               "bindings.drl" );

        final RuleDescr ruleDescr = (RuleDescr) pkg.getRules().get( 0 );

        final AndDescr lhs = ruleDescr.getLhs();
        assertEquals( 2,
                      lhs.getDescrs().size() );
        final PatternDescr cheese = (PatternDescr) lhs.getDescrs().get( 0 );
        assertEquals( "Cheese",
                      cheese.getObjectType() );
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                                                               "or_nesting.drl" );

        assertNotNull( pkg );
        assertEquals( 1,
                      pkg.getRules().size() );
        final RuleDescr rule = (RuleDescr) pkg.getRules().get( 0 );
        assertEquals( "simple_rule",
                      rule.getName() );

        assertEquals( 1,
                      rule.getLhs().getDescrs().size() );

        final OrDescr or = (OrDescr) rule.getLhs().getDescrs().get( 0 );
        assertEquals( 2,
                      or.getDescrs().size() );

        final PatternDescr first = (PatternDescr) or.getDescrs().get( 0 );
        assertEquals( "Person",
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                                                               "and_or_rule.drl" );

        assertNotNull( pkg );
        assertEquals( 1,
                      pkg.getRules().size() );
        final RuleDescr rule = (RuleDescr) pkg.getRules().get( 0 );
        assertEquals( "simple_rule",
                      rule.getName() );

        // we will have 3 children under the main And node
        final AndDescr and = rule.getLhs();
        assertEquals( 3,
                      and.getDescrs().size() );

        PatternDescr left = (PatternDescr) and.getDescrs().get( 0 );
        PatternDescr right = (PatternDescr) and.getDescrs().get( 1 );
        assertEquals( "Person",
                      left.getObjectType() );
        assertEquals( "Cheese",
                      right.getObjectType() );

        assertEquals( 1,
                      left.getConstraint().getDescrs().size() );

        ExprConstraintDescr fld = (ExprConstraintDescr) left.getConstraint().getDescrs().get( 0 );

        assertEquals( "name == \"mark\"",
                      fld.getExpression() );

        assertEquals( 1,
                      right.getConstraint().getDescrs().size() );

        fld = (ExprConstraintDescr) right.getConstraint().getDescrs().get( 0 );

        assertEquals( "type == \"stilton\"",
                      fld.getExpression() );

        // now the "||" part
        final OrDescr or = (OrDescr) and.getDescrs().get( 2 );
        assertEquals( 2,
                      or.getDescrs().size() );
        left = (PatternDescr) or.getDescrs().get( 0 );
        right = (PatternDescr) or.getDescrs().get( 1 );
        assertEquals( "Person",
                      left.getObjectType() );
        assertEquals( "Cheese",
                      right.getObjectType() );
        assertEquals( 1,
                      left.getConstraint().getDescrs().size() );

        fld = (ExprConstraintDescr) left.getConstraint().getDescrs().get( 0 );

        assertEquals( "name == \"mark\"",
                      fld.getExpression() );

        assertEquals( 1,
                      right.getConstraint().getDescrs().size() );

        fld = (ExprConstraintDescr) right.getConstraint().getDescrs().get( 0 );

        assertEquals( "type == \"stilton\"",
                      fld.getExpression() );

        assertEqualsIgnoreWhitespace( "System.out.println( \"Mark and Michael\" );",
                                      (String) rule.getConsequence() );
    }
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        final PackageDescr pkg = (PackageDescr) parseResource( "compilationUnit",
                                                               "or_binding.drl" );

        assertEquals( 1,
                      pkg.getRules().size() );
        final RuleDescr rule = (RuleDescr) pkg.getRules().get( 0 );
        assertEquals( 2,
                      rule.getLhs().getDescrs().size() );

        final OrDescr or = (OrDescr) rule.getLhs().getDescrs().get( 0 );
        assertEquals( 2,
                      or.getDescrs().size() );

        final PatternDescr leftPattern = (PatternDescr) or.getDescrs().get( 0 );
        assertEquals( "Person",
                      leftPattern.getObjectType() );
        assertEquals( "foo",
                      leftPattern.getIdentifier() );

        final PatternDescr rightPattern = (PatternDescr) or.getDescrs().get( 1 );
        assertEquals( "Person",
                      rightPattern.getObjectType() );
        assertEquals( "foo",
                      rightPattern.getIdentifier() );

        final PatternDescr cheeseDescr = (PatternDescr) rule.getLhs().getDescrs().get( 1 );
        assertEquals( "Cheese",
                      cheeseDescr.getObjectType() );
        assertEquals( null,
                      cheeseDescr.getIdentifier() );

        assertEqualsIgnoreWhitespace( "System.out.println( \"Mark and Michael\" + bar );",
                                      (String) rule.getConsequence() );
    }
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        final PackageDescr pkg = (PackageDescr) parseResource( "compilationUnit",
                                                               "or_binding_complex.drl" );

        assertEquals( 1,
                      pkg.getRules().size() );
        final RuleDescr rule = (RuleDescr) pkg.getRules().get( 0 );
        assertEquals( 1,
                      rule.getLhs().getDescrs().size() );

        assertEquals( 1,
                      rule.getLhs().getDescrs().size() );

        final OrDescr or = (OrDescr) rule.getLhs().getDescrs().get( 0 );
        assertEquals( 2,
                      or.getDescrs().size() );

        // first fact
        final PatternDescr firstFact = (PatternDescr) or.getDescrs().get( 0 );
        assertEquals( "Person",
                      firstFact.getObjectType() );
        assertEquals( "foo",
                      firstFact.getIdentifier() );

        // second "option"
        final PatternDescr secondFact = (PatternDescr) or.getDescrs().get( 1 );
        assertEquals( "Person",
                      secondFact.getObjectType() );
        assertEquals( 1,
                      secondFact.getConstraint().getDescrs().size() );
        assertEquals( "foo",
                      secondFact.getIdentifier() );

        assertEqualsIgnoreWhitespace( "System.out.println( \"Mark and Michael\" + bar );",
                                      (String) rule.getConsequence() );
    }
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        final PackageDescr pkg = (PackageDescr) parseResource( "compilationUnit",
                                                               "or_binding_with_brackets.drl" );

        assertEquals( 1,
                      pkg.getRules().size() );
        final RuleDescr rule = (RuleDescr) pkg.getRules().get( 0 );
        assertEquals( 1,
                      rule.getLhs().getDescrs().size() );

        assertEquals( 1,
                      rule.getLhs().getDescrs().size() );

        final OrDescr or = (OrDescr) rule.getLhs().getDescrs().get( 0 );
        assertEquals( 2,
                      or.getDescrs().size() );

        // first fact
        final PatternDescr firstFact = (PatternDescr) or.getDescrs().get( 0 );
        assertEquals( "Person",
                      firstFact.getObjectType() );
        assertEquals( "foo",
                      firstFact.getIdentifier() );

        // second "option"
        final PatternDescr secondFact = (PatternDescr) or.getDescrs().get( 0 );
        assertEquals( "Person",
                      secondFact.getObjectType() );
        assertEquals( "foo",
                      secondFact.getIdentifier() );

        assertEqualsIgnoreWhitespace( "System.out.println( \"Mark and Michael\" + bar );",
                                      (String) rule.getConsequence() );
    }
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Related Classes of org.drools.compiler.lang.descr.RuleDescr

  • org.drools.compiler.builder.impl.KnowledgeBuilderImpl
  • org.drools.compiler.builder.impl.KnowledgeBuilderTest
  • org.drools.compiler.compiler.PackageBuilder
  • org.drools.compiler.compiler.PackageBuilderConfigurationTest
  • org.drools.compiler.compiler.PackageBuilderTest
  • org.drools.compiler.compiler.QueryBuilderTest
  • org.drools.compiler.compiler.RuleErrorTest
  • org.drools.compiler.compiler.xml.rules.AndHandler
  • org.drools.compiler.compiler.xml.rules.OrHandler
  • org.drools.compiler.compiler.xml.rules.RuleHandler
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