Package org.drools.compiler.builder.impl

Examples of org.drools.compiler.builder.impl.KnowledgeBuilderImpl

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        InternalKnowledgePackage pkg = new KnowledgePackageImpl( "org.drools.compiler.test" );
        pkg.addImport( new ImportDeclaration( Cheese.class.getCanonicalName() ) );

        KnowledgeBuilderConfigurationImpl conf = new KnowledgeBuilderConfigurationImpl();
        KnowledgeBuilderImpl pkgBuilder = new KnowledgeBuilderImpl( pkg, conf );

        ruleDescr = new RuleDescr( "test consequence builder" );
        ruleDescr.setConsequence( consequence );
        ruleDescr.addAttribute( new AttributeDescr("dialect", "mvel") );
       
        for ( Entry<String, Object> entry : namedConsequences.entrySet() ) {
            ruleDescr.addNamedConsequences( entry.getKey(), entry.getValue() );
        }

        RuleImpl rule = new RuleImpl( ruleDescr.getName() );
        rule.addPattern( new Pattern( 0,
                                      new ClassObjectType( Cheese.class ),
                                      "$cheese" ) );
       
        rule.addPattern( new Pattern( 0,
                                      new ClassObjectType( Map.class ),
                                      "$map" ) );       

        PackageRegistry pkgRegistry = pkgBuilder.getPackageRegistry( pkg.getName() );
        DialectCompiletimeRegistry reg = pkgBuilder.getPackageRegistry( pkg.getName() ).getDialectCompiletimeRegistry();
        context = new RuleBuildContext( pkgBuilder,
                                        ruleDescr,
                                        reg,
                                        pkg,
                                        reg.getDialect( pkgRegistry.getDialect() ) );
        context.getBuildStack().push( rule.getLhs() );
       
        context.getDialect().getConsequenceBuilder().build( context, RuleImpl.DEFAULT_CONSEQUENCE_NAME );
        for ( String name : namedConsequences.keySet() ) {
            context.getDialect().getConsequenceBuilder().build( context, name );
        }
       
        context.getDialect().addRule( context );
        pkgRegistry.getPackage().addRule( context.getRule() );
        pkgBuilder.compileAll();
        pkgBuilder.reloadAll();
        if ( pkgBuilder.hasErrors() ) {
            fail(pkgBuilder.getErrors().toString());
        }
    }
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    @Test
    public void testBuild() throws Exception {
        final DrlParser parser = new DrlParser(LanguageLevelOption.DRL5);

        final KnowledgeBuilderImpl kBuilder = new KnowledgeBuilderImpl();
        kBuilder.addPackage(new PackageDescr("org.drools"));
        InternalKnowledgePackage pkg = kBuilder.getPackage();

        final PackageDescr pkgDescr = parser.parse( new InputStreamReader( getClass().getResourceAsStream( "nestedConditionalElements.drl" ) ) );

        // just checking there is no parsing errors
        assertFalse( parser.getErrors().toString(),
                            parser.hasErrors() );
       
        pkg.addGlobal("results", List.class);

        final RuleDescr ruleDescr = pkgDescr.getRules().get( 0 );
        final String ruleClassName = "RuleClassName.java";
        ruleDescr.setClassName( ruleClassName );
        ruleDescr.addAttribute(new AttributeDescr("dialect",
                                                  "java"));
       
        kBuilder.addPackage(pkgDescr);

        assertTrue(kBuilder.getErrors().toString(),
                   kBuilder.getErrors().isEmpty());

        final RuleImpl rule = kBuilder.getPackage().getRule( "test nested CEs" );

        assertEquals( "There should be 2 rule level declarations",
                      2,
                      rule.getDeclarations().size() );
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                                              new DateFormatsImpl() ) );

        // defining expectations on the mock object
        when( context.getRule() ).thenReturn( rule );
        when( context.getRuleDescr() ).thenReturn( ruleDescr );
        when( context.getKnowledgeBuilder() ).thenReturn( new KnowledgeBuilderImpl() );

        // calling the build method
        RuleBuilder builder = new RuleBuilder();
        builder.buildAttributes( context );
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        // creates expected results
        // defining expectations on the mock object
        when( context.getRule() ).thenReturn( rule );
        when( context.getRuleDescr() ).thenReturn( ruleDescr );
        when( context.getKnowledgeBuilder() ).thenReturn( new KnowledgeBuilderImpl() );

        // calling the build method
        RuleBuilder builder = new RuleBuilder();
        builder.buildMetaAttributes( context );
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        andDescr.addDescr( patDescr );
        ruleDescr.setLhs( andDescr );
        ruleDescr.setConsequence( "" );
        pkgDescr.addRule( ruleDescr );

        final KnowledgeBuilderImpl kBuilder = new KnowledgeBuilderImpl();
        kBuilder.addPackage(pkgDescr);

        assertTrue(kBuilder.getErrors().toString(),
                   kBuilder.getErrors().isEmpty());

        final RuleImpl rule = kBuilder.getPackages()[0].getRule( "Test Rule" );
        final GroupElement and = rule.getLhs();
        final Pattern pat = (Pattern) and.getChildren().get( 0 );
        if (pat.getConstraints().get(0) instanceof MvelConstraint) {
            final MvelConstraint fc = (MvelConstraint) pat.getConstraints().get( 0 );
            assertTrue( "Wrong class. Expected java.math.BigDecimal. Found: " + fc.getField().getValue().getClass(),
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        final RuleDescr ruleDescr = new RuleDescr( "Test Rule" );
        ruleDescr.addAttribute( new AttributeDescr( "dialect", "mvl" ) );
        ruleDescr.setConsequence( "" );
        pkgDescr.addRule( ruleDescr );

        final KnowledgeBuilderImpl kBuilder = new KnowledgeBuilderImpl();
        kBuilder.addPackage(pkgDescr);

        assertFalse(kBuilder.getErrors().toString(),
                    kBuilder.getErrors().isEmpty());
    }   
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        andDescr.addDescr( patDescr );
        ruleDescr.setLhs( andDescr );
        ruleDescr.setConsequence( "" );
        pkgDescr.addRule( ruleDescr );

        final KnowledgeBuilderImpl kBuilder = new KnowledgeBuilderImpl();
        kBuilder.addPackage(pkgDescr);

        assertTrue(kBuilder.getErrors().toString(),
                   kBuilder.getErrors().isEmpty());

        final RuleImpl rule = kBuilder.getPackages()[0].getRule( "Test Rule" );
        final GroupElement and = rule.getLhs();
        final Pattern pat = (Pattern) and.getChildren().get( 0 );
        if (pat.getConstraints().get(0) instanceof MvelConstraint) {
            final MvelConstraint fc = (MvelConstraint) pat.getConstraints().get( 0 );
            assertTrue( "Wrong class. Expected java.math.BigInteger. Found: " + fc.getField().getValue().getClass(),
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    @Test
    public void testSimpleExpression() {
        InternalKnowledgePackage pkg = new KnowledgePackageImpl( "pkg1" );
        final RuleDescr ruleDescr = new RuleDescr( "rule 1" );

        KnowledgeBuilderImpl pkgBuilder = new KnowledgeBuilderImpl( pkg );
        final KnowledgeBuilderConfigurationImpl conf = pkgBuilder.getBuilderConfiguration();
        DialectCompiletimeRegistry dialectRegistry = pkgBuilder.getPackageRegistry( pkg.getName() ).getDialectCompiletimeRegistry();
        MVELDialect mvelDialect = ( MVELDialect ) dialectRegistry.getDialect( "mvel" );

        final InstrumentedBuildContent context = new InstrumentedBuildContent( pkgBuilder,
                                                                               ruleDescr,
                                                                               dialectRegistry,
                                                                               pkg,                                                                              
                                                                               mvelDialect );

        final InstrumentedDeclarationScopeResolver declarationResolver = new InstrumentedDeclarationScopeResolver();

        final InternalReadAccessor extractor = store.getReader( Cheese.class,
                                                             "price",
                                                             getClass().getClassLoader() );

        final Pattern pattern = new Pattern( 0,
                                             new ClassObjectType( int.class ) );
        final Declaration declaration = new Declaration( "a",
                                                         extractor,
                                                         pattern );
        final Map map = new HashMap();
        map.put( "a",
                 declaration );
        declarationResolver.setDeclarations( map );
        context.setDeclarationResolver( declarationResolver );

        final EvalDescr evalDescr = new EvalDescr();
        evalDescr.setContent( "a == 10" );

        final MVELEvalBuilder builder = new MVELEvalBuilder();
        final EvalCondition eval = (EvalCondition) builder.build( context,
                                                                  evalDescr );
        ((MVELEvalExpression) eval.getEvalExpression()).compile( (MVELDialectRuntimeData) pkgBuilder.getPackageRegistry( pkg.getName() ).getDialectRuntimeRegistry().getDialectData( "mvel" ) );

        InternalKnowledgeBase kBase = (InternalKnowledgeBase) KnowledgeBaseFactory.newKnowledgeBase();
        StatefulKnowledgeSessionImpl ksession = (StatefulKnowledgeSessionImpl)kBase.newStatefulKnowledgeSession();

        MockLeftTupleSink sink = new MockLeftTupleSink();
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        final RuleDescr ruleDescr = new RuleDescr( "rule 1" );
        ruleDescr.addAttribute( new AttributeDescr( "salience",
                                                    "(p.age + 20)/2" ) );
        ruleDescr.setConsequence( "" );

        KnowledgeBuilderImpl pkgBuilder = new KnowledgeBuilderImpl( pkg );
        DialectCompiletimeRegistry dialectRegistry = pkgBuilder.getPackageRegistry( pkg.getName() ).getDialectCompiletimeRegistry();
        MVELDialect mvelDialect = (MVELDialect) dialectRegistry.getDialect( "mvel" );

        context = new InstrumentedBuildContent( pkgBuilder,
                                                ruleDescr,
                                                dialectRegistry,
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public class MVELAccumulateBuilderTest {

    @Test
    public void testSimpleExpression() {
        KnowledgeBuilderImpl pkgBuilder = new KnowledgeBuilderImpl();
        pkgBuilder.addPackage( new PackageDescr( "pkg1" ) );

        InternalKnowledgePackage pkg = pkgBuilder.getPackage();
        final RuleDescr ruleDescr = new RuleDescr( "rule 1" );

        final KnowledgeBuilderConfigurationImpl conf = pkgBuilder.getBuilderConfiguration();
        DialectCompiletimeRegistry dialectRegistry = pkgBuilder.getPackageRegistry( pkg.getName() ).getDialectCompiletimeRegistry();
        MVELDialect mvelDialect = (MVELDialect) dialectRegistry.getDialect( "mvel" );

        final RuleBuildContext context = new RuleBuildContext( pkgBuilder,
                                                               ruleDescr,
                                                               dialectRegistry,
                                                               pkg,
                                                               mvelDialect );

        final AccumulateDescr accDescr = new AccumulateDescr();
        final PatternDescr inputPattern = new PatternDescr( "org.drools.compiler.Cheese",
                                                            "$cheese" );
        accDescr.setInputPattern( inputPattern );
        accDescr.setInitCode( "total = 0;" );
        accDescr.setActionCode( "total += $cheese.price;" );
        accDescr.setReverseCode( "total -= $cheese.price;" );
        accDescr.setResultCode( "new Integer(total)" );

        final MVELAccumulateBuilder builder = new MVELAccumulateBuilder();
        final Accumulate acc = (Accumulate) builder.build( context,
                                                           accDescr );

        ((MVELCompileable) acc.getAccumulators()[0]).compile( (MVELDialectRuntimeData) pkgBuilder.getPackageRegistry( pkg.getName() ).getDialectRuntimeRegistry().getDialectData( "mvel" ) );

        InternalKnowledgeBase kBase = (InternalKnowledgeBase) KnowledgeBaseFactory.newKnowledgeBase();
        StatefulKnowledgeSessionImpl ksession = (StatefulKnowledgeSessionImpl)kBase.newStatefulKnowledgeSession();

        MockLeftTupleSink sink = new MockLeftTupleSink();
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Related Classes of org.drools.compiler.builder.impl.KnowledgeBuilderImpl

  • org.drools.compiler.compiler.AnnotationDeclarationError
  • org.drools.compiler.compiler.CompositeKnowledgeBuilderImpl
  • org.drools.compiler.compiler.DeprecatedResourceTypeWarning
  • org.drools.compiler.compiler.Dialect
  • org.drools.compiler.compiler.DialectCompiletimeRegistry
  • org.drools.compiler.compiler.DrlParser
  • org.drools.compiler.compiler.DroolsError
  • org.drools.compiler.compiler.DroolsErrorWrapper
  • org.drools.compiler.compiler.DroolsWarningWrapper
  • org.drools.compiler.compiler.DuplicateFunction
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