Package org.drools.lang.descr

Examples of org.drools.lang.descr.AndDescr

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        assertNotNull( rule );
        assertEquals( "simple_rule",
                      rule.getName() );

        final AndDescr lhs = rule.getLhs();
        assertEquals( 1,
                      lhs.getDescrs().size() );
        final NotDescr not = (NotDescr) lhs.getDescrs().get( 0 );
        assertEquals( 1,
                      not.getDescrs().size() );
        final PatternDescr pattern = (PatternDescr) not.getDescrs().get( 0 );

        assertEquals( "Cheese",
                      pattern.getObjectType() );
        assertEquals( 1,
                      pattern.getConstraint().getDescrs().size() );

        final AndDescr and = (AndDescr) pattern.getConstraint();
        final FieldConstraintDescr fld = (FieldConstraintDescr) and.getDescrs().get( 0 );
        final LiteralRestrictionDescr lit = (LiteralRestrictionDescr) fld.getRestrictions().get( 0 );

        assertEquals( "==",
                      lit.getEvaluator() );
        assertEquals( "stilton",
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        assertNotNull( rule );
        assertEquals( "simple_rule",
                      rule.getName() );

        final AndDescr lhs = rule.getLhs();
        assertEquals( 2,
                      lhs.getDescrs().size() );
        final NotDescr not = (NotDescr) lhs.getDescrs().get( 0 );
        assertEquals( 1,
                      not.getDescrs().size() );
        final PatternDescr pattern = (PatternDescr) not.getDescrs().get( 0 );

        assertEquals( "Cheese",
                      pattern.getObjectType() );

        final ExistsDescr ex = (ExistsDescr) lhs.getDescrs().get( 1 );
        assertEquals( 1,
                      ex.getDescrs().size() );
        final PatternDescr exPattern = (PatternDescr) ex.getDescrs().get( 0 );
        assertEquals( "Foo",
                      exPattern.getObjectType() );
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        assertNotNull( query );

        assertEquals( "simple_query",
                      query.getName() );

        final AndDescr lhs = query.getLhs();

        assertNotNull( lhs );

        assertEquals( 3,
                      lhs.getDescrs().size() );

        // Check first pattern
        final PatternDescr first = (PatternDescr) lhs.getDescrs().get( 0 );
        assertEquals( "foo3",
                      first.getIdentifier() );
        assertEquals( "Bar",
                      first.getObjectType() );

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

        AndDescr and = (AndDescr) first.getConstraint();
        FieldConstraintDescr fld = (FieldConstraintDescr) and.getDescrs().get( 0 );
        LiteralRestrictionDescr constraint = (LiteralRestrictionDescr) fld.getRestrictions().get( 0 );
        //LiteralDescr constraint = (LiteralDescr) first.getDescrs().get( 0 );

        assertNotNull( constraint );

        assertEquals( "a",
                      fld.getFieldName() );
        assertEquals( "==",
                      constraint.getEvaluator() );
        assertEquals( "3",
                      constraint.getText() );

        // Check second pattern
        final PatternDescr second = (PatternDescr) lhs.getDescrs().get( 1 );
        assertEquals( "foo4",
                      second.getIdentifier() );
        assertEquals( "Bar",
                      second.getObjectType() );

        and = (AndDescr) second.getConstraint();
        assertEquals( 2,
                      and.getDescrs().size() );
        //check it has field bindings.
        final FieldBindingDescr fieldBindingDescr = (FieldBindingDescr) and.getDescrs().get( 0 );
        assertEquals( "a",
                      fieldBindingDescr.getFieldName() );
        assertEquals( "a4",
                      fieldBindingDescr.getIdentifier() );

        fld = (FieldConstraintDescr) and.getDescrs().get( 1 );

        constraint = (LiteralRestrictionDescr) fld.getRestrictions().get( 0 );

        assertNotNull( constraint );
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        final RuleDescr rule1 = (RuleDescr) rules.get( 1 );
        assertEquals( "Like Cheddar",
                      rule1.getName() );

        //checkout the first rule
        AndDescr lhs = rule1.getLhs();
        assertNotNull( lhs );
        assertEquals( 1,
                      lhs.getDescrs().size() );
        assertEqualsIgnoreWhitespace( "System.out.println(\"I like \" + t);",
                                      (String) rule0.getConsequence() );

        // Check first pattern
        PatternDescr first = (PatternDescr) lhs.getDescrs().get( 0 );
        assertEquals( "Cheese",
                      first.getObjectType() );

        //checkout the second rule
        lhs = rule1.getLhs();
        assertNotNull( lhs );
        assertEquals( 1,
                      lhs.getDescrs().size() );
        assertEqualsIgnoreWhitespace( "System.out.println(\"I like \" + t);",
                                      (String) rule1.getConsequence() );

        // Check first pattern
        first = (PatternDescr) lhs.getDescrs().get( 0 );
        assertEquals( "Cheese",
                      first.getObjectType() );

        assertFalse( parser.hasErrors() );
    }
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                      rule.getConsequence() );
    }

    public void testRuleParseLhs3() throws Exception {
        final String text = "(or\nnot Person()\n(and Cheese()\nMeat()\nWine()))";
        final AndDescr descrs = new AndDescr();
        final CharStream charStream = new ANTLRStringStream( text );
        final DRLLexer lexer = new DRLLexer( charStream );
        final TokenStream tokenStream = new CommonTokenStream( lexer );
        final DRLParser parser = new DRLParser( tokenStream );
        parser.setLineOffset( descrs.getLine() );
        parser.normal_lhs_block( descrs );
        if ( parser.hasErrors() ) {
            System.err.println( parser.getErrorMessages() );
        }
        assertFalse( parser.hasErrors() );
        assertEquals( 1,
                      descrs.getDescrs().size() );
        OrDescr or = (OrDescr) descrs.getDescrs().get( 0 );
        assertEquals( 2,
                      or.getDescrs().size() );
        NotDescr not = (NotDescr) or.getDescrs().get( 0 );
        AndDescr and = (AndDescr) or.getDescrs().get( 1 );
        assertEquals( 1,
                      not.getDescrs().size() );
        PatternDescr person = (PatternDescr) not.getDescrs().get( 0 );
        assertEquals( "Person",
                      person.getObjectType() );
        assertEquals( 3,
                      and.getDescrs().size() );
        PatternDescr cheese = (PatternDescr) and.getDescrs().get( 0 );
        assertEquals( "Cheese",
                      cheese.getObjectType() );
        PatternDescr meat = (PatternDescr) and.getDescrs().get( 1 );
        assertEquals( "Meat",
                      meat.getObjectType() );
        PatternDescr wine = (PatternDescr) and.getDescrs().get( 2 );
        assertEquals( "Wine",
                      wine.getObjectType() );

    }
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    }

    public void testRuleParseLhs4() throws Exception {
        final String text = "not((and Cheese() Meat() Wine()))";
        final AndDescr descrs = new AndDescr();
        final CharStream charStream = new ANTLRStringStream( text );
        final DRLLexer lexer = new DRLLexer( charStream );
        final TokenStream tokenStream = new CommonTokenStream( lexer );
        final DRLParser parser = new DRLParser( tokenStream );
        parser.setLineOffset( descrs.getLine() );
        parser.normal_lhs_block( descrs );
        if ( parser.hasErrors() ) {
            System.err.println( parser.getErrorMessages() );
        }
        assertFalse( parser.hasErrors() );
        assertEquals( 1,
                      descrs.getDescrs().size() );
        NotDescr not = (NotDescr) descrs.getDescrs().get( 0 );
        assertEquals( 1,
                      not.getDescrs().size() );
        AndDescr and = (AndDescr) not.getDescrs().get( 0 );
        assertEquals( 3,
                      and.getDescrs().size() );
        PatternDescr cheese = (PatternDescr) and.getDescrs().get( 0 );
        assertEquals( "Cheese",
                      cheese.getObjectType() );
        PatternDescr meat = (PatternDescr) and.getDescrs().get( 1 );
        assertEquals( "Meat",
                      meat.getObjectType() );
        PatternDescr wine = (PatternDescr) and.getDescrs().get( 2 );
        assertEquals( "Wine",
                      wine.getObjectType() );

    }
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        assertEqualsIgnoreWhitespace( "x++;",
                                      accum.getActionCode() );
        assertEqualsIgnoreWhitespace( "new Integer(x)",
                                      accum.getResultCode() );

        final AndDescr and = (AndDescr) accum.getInput();
        assertEquals( 2,
                      and.getDescrs().size() );
        final PatternDescr person = (PatternDescr) and.getDescrs().get( 0 );
        final PatternDescr cheese = (PatternDescr) and.getDescrs().get( 1 );
        assertEquals( "Person",
                      person.getObjectType() );
        assertEquals( "Cheese",
                      cheese.getObjectType() );
    }
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        parser.compilation_unit();

        final PackageDescr pkg = parser.getPackageDescr();
        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( 1,
                      cheese.getConstraint().getDescrs().size() );
        assertEquals( "Cheese",
                      cheese.getObjectType() );
        assertEquals( 1,
                      lhs.getDescrs().size() );
        final FieldBindingDescr fieldBinding = (FieldBindingDescr) cheese.getConstraint().getDescrs().get( 0 );
        assertEquals( "type",
                      fieldBinding.getFieldName() );

        assertFalse( parser.hasErrors() );
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        parser.compilation_unit();

        final PackageDescr pkg = parser.getPackageDescr();
        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() );
        assertEquals( 2,
                      lhs.getDescrs().size() );
        FieldBindingDescr fieldBinding = (FieldBindingDescr) cheese.getConstraint().getDescrs().get( 0 );
        assertEquals( "type",
                      fieldBinding.getFieldName() );

        FieldConstraintDescr fld = (FieldConstraintDescr) cheese.getConstraint().getDescrs().get( 1 );
        LiteralRestrictionDescr literalDescr = (LiteralRestrictionDescr) fld.getRestrictions().get( 0 );
        //LiteralDescr literalDescr = (LiteralDescr) cheese.getDescrs().get( 1 );
        assertEquals( "type",
                      fld.getFieldName() );
        assertEquals( "==",
                      literalDescr.getEvaluator() );
        assertEquals( "stilton",
                      literalDescr.getText() );

        final PatternDescr person = (PatternDescr) lhs.getDescrs().get( 1 );
        fieldBinding = (FieldBindingDescr) person.getConstraint().getDescrs().get( 0 );
        assertEquals( "name",
                      fieldBinding.getFieldName() );

        fld = (FieldConstraintDescr) person.getConstraint().getDescrs().get( 1 );
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        final PatternDescr first = (PatternDescr) or.getDescrs().get( 0 );
        assertEquals( "Person",
                      first.getObjectType() );

        final AndDescr and = (AndDescr) or.getDescrs().get( 1 );
        assertEquals( 2,
                      and.getDescrs().size() );

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

        final PatternDescr right = (PatternDescr) and.getDescrs().get( 1 );
        assertEquals( "Cheese",
                      right.getObjectType() );
    }
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Related Classes of org.drools.lang.descr.AndDescr

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  • org.drools.compiler.PackageBuilderConfigurationTest
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  • org.drools.compiler.QueryBuilderTest
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  • org.drools.compiler.xml.rules.AndHandler
  • org.drools.compiler.xml.rules.QueryHandler
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  • org.drools.compiler.xml.rules.XmlPackageReaderTest
  • org.drools.guvnor.models.commons.backend.rule.BRDRLPersistence
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