Package org.drools.compiler.builder.impl

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

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           "    @role(event)\n" +             
           "end\n" +          
           "declare " + DImpl.class.getCanonicalName() + "\n" +
           "    @typesafe(false)\n" +
           "end\n";
        KnowledgeBuilderImpl builder = getPackageBuilder( str );
        TypeDeclaration tdecl = builder.getTypeDeclaration( DImpl.class );
        assertEquals( false, tdecl.isTypesafe() );
        assertEquals( Role.EVENT, tdecl.getRole() );       
    }
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           "    @role(event)\n" +             
           "end\n" +          
           "declare " + DImpl.class.getCanonicalName() + "\n" +
           "    @typesafe(false)\n" +
           "end\n";
        KnowledgeBuilderImpl builder = getPackageBuilder( str );
        TypeDeclaration tdecl = builder.getTypeDeclaration( DImpl.class );
        assertEquals( false, tdecl.isTypesafe() );
        assertEquals( Role.EVENT, tdecl.getRole() );       
    }   
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           "declare " + IB.class.getCanonicalName() + "\n" +
           "    @role(fact)\n" +             
           "end\n" +            
           "declare " + DImpl.class.getCanonicalName() + "\n" +
           "end\n";
        KnowledgeBuilderImpl builder = getPackageBuilder( str );
        TypeDeclaration tdecl = builder.getTypeDeclaration( DImpl.class );
        assertEquals( true, tdecl.isTypesafe() );
        assertEquals( Role.FACT, tdecl.getRole() );       
    }       
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           "declare " + IB.class.getCanonicalName() + "\n" +
           "    @typesafe(true)\n" +
           "    @role(event)\n" +             
           "end\n";

        KnowledgeBuilderImpl builder = getPackageBuilder( str );
        TypeDeclaration tdecl = builder.getTypeDeclaration( DImpl.class );
        assertEquals( true, tdecl.isTypesafe() );
        assertEquals( Role.EVENT, tdecl.getRole() );
    }   
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           "    @role(event)\n" +          
           "end\n" +
           "declare " + DImpl.class.getCanonicalName() + "\n" +
           "end\n";

        KnowledgeBuilderImpl builder = getPackageBuilder( str );
        TypeDeclaration tdecl = builder.getTypeDeclaration( DImpl.class );
        assertEquals( true, tdecl.isTypesafe() );
        assertEquals( Role.EVENT, tdecl.getRole() );
    }    
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           "declare " + CImpl.class.getCanonicalName() + "\n" +
           "    @role(fact)\n" +             
           "end\n" +            
           "declare " + DImpl.class.getCanonicalName() + "\n" +
           "end\n";
        KnowledgeBuilderImpl builder = getPackageBuilder( str );
        TypeDeclaration tdecl = builder.getTypeDeclaration( DImpl.class );
        assertEquals( true, tdecl.isTypesafe() );
        assertEquals( Role.FACT, tdecl.getRole() );       
    }     
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        xstream.toXML( kBase,
                       out );
    }

    private void checkRuleBase(final String name) throws Exception {
        final KnowledgeBuilderImpl builder = new KnowledgeBuilderImpl();
        builder.addPackageFromDrl( new InputStreamReader( getClass().getResourceAsStream( "test_" + name + ".drl" ) ) );
        InternalKnowledgePackage pkg = builder.getPackage();

        final InternalKnowledgeBase kBase = (InternalKnowledgeBase) getKnowledgeBase();
        kBase.addPackage( pkg );

        if ( this.writeTree ) {
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public class QueryBuilderTest extends DroolsTestCase {

    @Test
    public void testRuleWithQuery() throws Exception {
        final KnowledgeBuilderImpl builder = new KnowledgeBuilderImpl();

        final PackageDescr packageDescr = new PackageDescr( "p1" );

        QueryDescr queryDescr = new QueryDescr( "query1" );
        queryDescr.addParameter( "String",
                                 "$name" );
        queryDescr.addParameter( "int",
                                 "$age" );
        queryDescr.addParameter( "String",
                                 "$likes" );
        packageDescr.addRule( queryDescr );
        AndDescr lhs = new AndDescr();
        queryDescr.setLhs( lhs );
        PatternDescr pattern = new PatternDescr( Person.class.getName() );
        lhs.addDescr( pattern );
        pattern.addConstraint( new BindingDescr( "$name", "name", true ) );
        pattern.addConstraint( new BindingDescr( "$age", "age", true ) );
        pattern.addConstraint( new BindingDescr( "$likes", "likes", true ) );

        RuleDescr ruleDescr = new RuleDescr( "rule-1" );
        packageDescr.addRule( ruleDescr );
        lhs = new AndDescr();
        ruleDescr.setLhs( lhs );

        pattern = new PatternDescr( Cheese.class.getName() );
        lhs.addDescr( pattern );
        pattern.addConstraint( new BindingDescr( "$type",
                                              "type" ) );

        pattern = new PatternDescr( "query1" );
        pattern.setQuery( true );
        lhs.addDescr( pattern );
        ExprConstraintDescr expr = new ExprConstraintDescr("'bobba'");
        expr.setPosition( 0 );
        expr.setType( Type.POSITIONAL );
        pattern.addConstraint(expr);
       
        expr = new ExprConstraintDescr("$age");
        expr.setPosition( 1 );
        expr.setType( Type.POSITIONAL );
        pattern.addConstraint( expr );
       
        expr = new ExprConstraintDescr("$type");
        expr.setPosition( 2 );
        expr.setType( Type.POSITIONAL );       
        pattern.addConstraint( expr );
        ruleDescr.setConsequence( "System.out.println(\"age: \" + $age);" );

        builder.addPackage( packageDescr );
        assertLength( 0,
                      builder.getErrors().getErrors() );

        KnowledgeBase kbase = KnowledgeBaseFactory.newKnowledgeBase();
        kbase.addKnowledgePackages(Arrays.asList( new KnowledgePackage[] { builder.getPackage() } ));
        final KieSession session = kbase.newStatefulKnowledgeSession();

        session.insert( new Person( "bobba",
                                    "stilton",
                                    90 ) );
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    private static InternalKnowledgePackage generatePackage(int ruleCount) throws DroolsParserException {
        StringReader    reader  = new StringReader(generateRules(ruleCount));
       
        System.out.println("Generating packages");
        KnowledgeBuilderImpl pkgBuilder = new KnowledgeBuilderImpl();
        try {
            pkgBuilder.addPackageFromDrl( reader );
        } catch ( IOException e ) {
            fail( "Unable to parse rules\n" + e.getMessage());
        }

        if ( pkgBuilder.hasErrors() ) {
            fail( pkgBuilder.getErrors().toString() );
        }

        return pkgBuilder.getPackage();
    }
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        session.fireAllRules();
    }

    @Test
    public void testQuery() throws Exception {
        final KnowledgeBuilderImpl builder = new KnowledgeBuilderImpl();

        final PackageDescr packageDescr = new PackageDescr( "p1" );
        final QueryDescr queryDescr = new QueryDescr( "query1" );
        queryDescr.addParameter( "String",
                                 "$type" );

        packageDescr.addRule( queryDescr );

        final AndDescr lhs = new AndDescr();
        queryDescr.setLhs( lhs );

        final PatternDescr pattern = new PatternDescr( Cheese.class.getName(),
                                                       "stilton" );
        lhs.addDescr( pattern );

        pattern.addConstraint( new ExprConstraintDescr("type == $type") );

        // Another query, no parameters
        QueryDescr queryDescr2 = new QueryDescr( "query2" );
        packageDescr.addRule( queryDescr2 );
        AndDescr lhs2 = new AndDescr();
        queryDescr2.setLhs( lhs2 );
        PatternDescr pattern2 = new PatternDescr( Cheese.class.getName() );
        lhs2.addDescr( pattern2 );

        builder.addPackage( packageDescr );

        assertLength( 0,
                      builder.getErrors().getErrors() );

        KnowledgeBase kbase = KnowledgeBaseFactory.newKnowledgeBase();
        kbase.addKnowledgePackages(Arrays.asList( new KnowledgePackage[] { builder.getPackage() } ) );

        final KieSession session = kbase.newStatefulKnowledgeSession();

        session.insert( new Cheese( "stilton",
                                    15 ) );
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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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