Package org.drools.compiler.lang.descr

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

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

        PatternDescr pattern = (PatternDescr) rule.getLhs().getDescrs().get( 0 );
        final ExprConstraintDescr fieldBinding = (ExprConstraintDescr) pattern.getDescrs().get( 0 );
        assertEquals( "$likes:like",
                      fieldBinding.getExpression() );

        final NotDescr not = (NotDescr) rule.getLhs().getDescrs().get( 1 );
        pattern = (PatternDescr) not.getDescrs().get( 0 );

        final ExprConstraintDescr fld = (ExprConstraintDescr) pattern.getConstraint().getDescrs().get( 0 );

        assertEquals( "type == $likes",
                      fld.getExpression() );
    }
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                                                          "enumeration.drl" );
        assertEquals( "simple_rule",
                      rule.getName() );
        assertEquals( 1,
                      rule.getLhs().getDescrs().size() );
        final PatternDescr col = (PatternDescr) rule.getLhs().getDescrs().get( 0 );
        assertEquals( "Foo",
                      col.getObjectType() );
        assertEquals( 1,
                      col.getConstraint().getDescrs().size() );
        final ExprConstraintDescr fld = (ExprConstraintDescr) col.getConstraint().getDescrs().get( 0 );

        assertEquals( "bar == Foo.BAR",
                      fld.getExpression() );
    }
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    public void testSoundsLike() throws Exception {
        final PackageDescr pkg = (PackageDescr) parseResource( "compilationUnit",
                                                               "soundslike_operator.drl" );

        RuleDescr rule = (RuleDescr) pkg.getRules().get( 0 );
        PatternDescr pat = (PatternDescr) rule.getLhs().getDescrs().get( 0 );

        pat.getConstraint();
    }
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    @Test
    public void testEndPosition() throws Exception {
        final PackageDescr pkg = (PackageDescr) parseResource( "compilationUnit",
                                                               "test_EndPosition.drl" );
        final RuleDescr rule = (RuleDescr) pkg.getRules().get( 0 );
        final PatternDescr col = (PatternDescr) rule.getLhs().getDescrs().get( 0 );
        assertEquals( 6,
                      col.getLine() );
        assertEquals( 8,
                      col.getEndLine() );
    }
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        final PackageDescr pkg = (PackageDescr) parseResource( "compilationUnit",
                                                               "qualified_classname.drl" );

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

        final PatternDescr p = (PatternDescr) rule.getLhs().getDescrs().get( 0 );

        assertEquals( "com.cheeseco.Cheese",
                      p.getObjectType() );
    }
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                      pkg.getRules().size() );
        final RuleDescr rule = (RuleDescr) pkg.getRules().get( 0 );
        assertEquals( 1,
                      rule.getLhs().getDescrs().size() );

        final PatternDescr outPattern = (PatternDescr) rule.getLhs().getDescrs().get( 0 );
        final AccumulateDescr accum = (AccumulateDescr) outPattern.getSource();
        assertEqualsIgnoreWhitespace( "int x = 0 ;",
                                      accum.getInitCode() );
        assertEqualsIgnoreWhitespace( "x++;",
                                      accum.getActionCode() );
        assertNull( accum.getReverseCode() );
        assertEqualsIgnoreWhitespace( "new Integer(x)",
                                      accum.getResultCode() );

        assertFalse( accum.isExternalFunction() );

        final PatternDescr pattern = (PatternDescr) accum.getInputPattern();
        assertEquals( "Person",
                      pattern.getObjectType() );
    }
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                      pkg.getRules().size() );
        final RuleDescr rule = (RuleDescr) pkg.getRules().get( 0 );
        assertEquals( 1,
                      rule.getLhs().getDescrs().size() );

        final PatternDescr outPattern = (PatternDescr) rule.getLhs().getDescrs().get( 0 );
        final AccumulateDescr accum = (AccumulateDescr) outPattern.getSource();
        assertEqualsIgnoreWhitespace( "$counter",
                                      outPattern.getIdentifier() );
        assertEqualsIgnoreWhitespace( "int x = 0 ;",
                                      accum.getInitCode() );
        assertEqualsIgnoreWhitespace( "x++;",
                                      accum.getActionCode() );
        assertEqualsIgnoreWhitespace( "new Integer(x)",
                                      accum.getResultCode() );

        final PatternDescr pattern = (PatternDescr) accum.getInputPattern();
        assertEquals( "Person",
                      pattern.getObjectType() );
    }
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                      pkg.getRules().size() );
        final RuleDescr rule = (RuleDescr) pkg.getRules().get( 0 );
        assertEquals( 1,
                      rule.getLhs().getDescrs().size() );

        final PatternDescr outPattern = (PatternDescr) rule.getLhs().getDescrs().get( 0 );
        final CollectDescr collect = (CollectDescr) outPattern.getSource();

        final PatternDescr pattern = (PatternDescr) collect.getInputPattern();
        assertEquals( "Person",
                      pattern.getObjectType() );
    }
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    public void testPredicate2() throws Exception {
        // predicates are also prefixed by the eval keyword
        final RuleDescr rule = (RuleDescr) parse( "rule",
                                                  "rule X when Foo(eval( $var.equals(\"xyz\") )) then end" );

        final PatternDescr pattern = (PatternDescr) rule.getLhs().getDescrs().get( 0 );
        final List< ? > constraints = pattern.getConstraint().getDescrs();
        assertEquals( 1,
                      constraints.size() );

        final ExprConstraintDescr predicate = (ExprConstraintDescr) constraints.get( 0 );
        assertEquals( "eval( $var.equals(\"xyz\") )",
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        final AndDescr root = rule.getLhs();
        final NotDescr not1 = (NotDescr) root.getDescrs().get( 0 );
        final AndDescr and1 = (AndDescr) not1.getDescrs().get( 0 );

        final PatternDescr state = (PatternDescr) and1.getDescrs().get( 0 );
        final NotDescr not2 = (NotDescr) and1.getDescrs().get( 1 );
        final AndDescr and2 = (AndDescr) not2.getDescrs().get( 0 );
        final PatternDescr person = (PatternDescr) and2.getDescrs().get( 0 );
        final PatternDescr cheese = (PatternDescr) and2.getDescrs().get( 1 );

        final PatternDescr person2 = (PatternDescr) root.getDescrs().get( 1 );
        final OrDescr or = (OrDescr) root.getDescrs().get( 2 );
        final PatternDescr cheese2 = (PatternDescr) or.getDescrs().get( 0 );
        final PatternDescr cheese3 = (PatternDescr) or.getDescrs().get( 1 );

        assertEquals( state.getObjectType(),
                      "State" );
        assertEquals( person.getObjectType(),
                      "Person" );
        assertEquals( cheese.getObjectType(),
                      "Cheese" );
        assertEquals( person2.getObjectType(),
                      "Person" );
        assertEquals( cheese2.getObjectType(),
                      "Cheese" );
        assertEquals( cheese3.getObjectType(),
                      "Cheese" );
    }
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Related Classes of org.drools.compiler.lang.descr.PatternDescr

  • org.drools.compiler.builder.impl.ClassDefinitionFactory
  • org.drools.compiler.builder.impl.ClassHierarchyManager
  • org.drools.compiler.builder.impl.KnowledgeBuilderTest
  • org.drools.compiler.builder.impl.TypeDeclarationBuilder
  • org.drools.compiler.compiler.PackageBuilder
  • org.drools.compiler.compiler.PackageBuilderTest
  • org.drools.compiler.compiler.QueryBuilderTest
  • org.drools.compiler.compiler.xml.rules.AccumulateHandler
  • org.drools.compiler.compiler.xml.rules.CollectHandler
  • org.drools.compiler.compiler.xml.rules.ExprConstraintHandler
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