Examples of org.drools.compiler.rule.builder.dialect.java.JavaDialectConfiguration

Package org.drools.compiler.rule.builder.dialect.java

Examples of org.drools.compiler.rule.builder.dialect.java.JavaDialectConfiguration

org.drools.compiler.rule.builder.dialect.java.JavaDialectConfiguration
There are options to use various flavours of runtime compilers. Apache JCI is used as the interface to all the runtime compilers. You can also use the system property "drools.compiler" to set the desired compiler. The valid values are "ECLIPSE" and "JANINO" only. drools.dialect.java.compiler = drools.dialect.java.lngLevel = <1.5|1.6> The default compiler is Eclipse and the default lngLevel is 1.5. The lngLevel will attempt to autodiscover your system using the system property "java.version" The JavaDialectConfiguration will attempt to validate that the specified compiler is in the classpath, using ClassLoader.loasClass(String). If you intented to just Janino sa the compiler you must either overload the compiler property before instantiating this class or the PackageBuilder, or make sure Eclipse is in the classpath, as Eclipse is the default.

    }


    @Test
    public void testJaninoWithStaticImports() throws Exception {
        KnowledgeBuilderConfigurationImpl cfg = new KnowledgeBuilderConfigurationImpl();
        JavaDialectConfiguration javaConf = (JavaDialectConfiguration) cfg.getDialectConfiguration( "java" );
        javaConf.setCompiler( JavaDialectConfiguration.JANINO );


        KnowledgeBuilderImpl bldr = new KnowledgeBuilderImpl( cfg );
        bldr.addPackageFromDrl( new StringReader( "package testBuilderPackageConfig \n import java.util.List" ) );
        bldr.addPackageFromDrl( new StringReader( "package testBuilderPackageConfig \n function void doSomething() {\n System.err.println(List.class.toString()); }" ) );

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    }


    @Test
    public void testSystemProperties() {
        KnowledgeBuilderConfigurationImpl cfg;
        JavaDialectConfiguration javaConf;


        System.setProperty( "drools.dialect.java.compiler",
                            "JANINO" );
        cfg = new KnowledgeBuilderConfigurationImpl();
        javaConf = (JavaDialectConfiguration) cfg.getDialectConfiguration( "java" );
        assertEquals( JavaDialectConfiguration.JANINO,
                      javaConf.getCompiler() );


        KnowledgeBuilderConfigurationImpl cfg2 = new KnowledgeBuilderConfigurationImpl();
        JavaDialectConfiguration javaConf2 = (JavaDialectConfiguration) cfg2.getDialectConfiguration( "java" );
        assertEquals( javaConf.getCompiler(),
                      javaConf2.getCompiler() );


        System.setProperty( "drools.dialect.java.compiler",
                            "ECLIPSE" );
        cfg = new KnowledgeBuilderConfigurationImpl();
        javaConf = (JavaDialectConfiguration) cfg.getDialectConfiguration( "java" );
        assertEquals( JavaDialectConfiguration.ECLIPSE,
                      javaConf.getCompiler() );


        javaConf2.setCompiler( JavaDialectConfiguration.ECLIPSE );
        assertEquals( JavaDialectConfiguration.ECLIPSE,
                      javaConf2.getCompiler() );


        javaConf2.setCompiler( JavaDialectConfiguration.JANINO );
        assertEquals( JavaDialectConfiguration.JANINO,
                      javaConf2.getCompiler() );


        final KnowledgeBuilderConfigurationImpl cfg3 = new KnowledgeBuilderConfigurationImpl();
        JavaDialectConfiguration javaConf3 = (JavaDialectConfiguration) cfg3.getDialectConfiguration( "java" );
        assertEquals( javaConf.getCompiler(),
                      javaConf3.getCompiler() );
    }

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                      cfg2.getDefaultDialect().getClass() );
    }


    @Test
    public void testProgramaticProperties2() {
        JavaDialectConfiguration javaConf = new JavaDialectConfiguration();
        javaConf.init( new KnowledgeBuilderConfigurationImpl() );
        javaConf.setCompiler( JavaDialectConfiguration.ECLIPSE );
        KnowledgeBuilderConfigurationImpl cfg = new KnowledgeBuilderConfigurationImpl();
        cfg.setDialectConfiguration( "java",
                                     javaConf );
        JavaDialectConfiguration javaConf2 = (JavaDialectConfiguration) cfg.getDialectConfiguration( "java" );
        assertSame( javaConf,
                    javaConf2 );
        assertEquals( JavaDialectConfiguration.ECLIPSE,
                      javaConf2.getCompiler() );


        javaConf = new JavaDialectConfiguration();
        javaConf.init( new KnowledgeBuilderConfigurationImpl() );
        javaConf.setCompiler( JavaDialectConfiguration.JANINO );
        cfg = new KnowledgeBuilderConfigurationImpl();
        cfg.setDialectConfiguration( "java",
                                     javaConf );
        javaConf2 = (JavaDialectConfiguration) cfg.getDialectConfiguration( "java" );
        assertSame( javaConf,
                    javaConf2 );
        assertEquals( JavaDialectConfiguration.JANINO,
                      javaConf2.getCompiler() );
    }

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        final Field compilerField = dialect.getClass().getDeclaredField( "compiler" );
        compilerField.setAccessible( true );
        JavaCompiler compiler = (JavaCompiler) compilerField.get( dialect );


        KnowledgeBuilderConfigurationImpl conf = new KnowledgeBuilderConfigurationImpl();
        JavaDialectConfiguration javaConf = (JavaDialectConfiguration) conf.getDialectConfiguration( "java" );
        switch( javaConf.getCompiler() ) {
            case JavaDialectConfiguration.NATIVE : assertSame( NativeJavaCompiler.class, compiler.getClass() );
                break;
            case JavaDialectConfiguration.ECLIPSE: assertSame( EclipseJavaCompiler.class, compiler.getClass() );
                break;
            case JavaDialectConfiguration.JANINO: assertSame( JaninoJavaCompiler.class, compiler.getClass() );
                break;
            default:
                fail( "Unrecognized java compiler");
        }


        // test JANINO with property settings
        conf = new KnowledgeBuilderConfigurationImpl();
        javaConf = (JavaDialectConfiguration) conf.getDialectConfiguration( "java" );
        javaConf.setCompiler( JavaDialectConfiguration.JANINO );
        builder = new KnowledgeBuilderImpl( conf );
        builder.addPackage( pkgDescr );


        dialectName = (String) dialectField.get( builder );
        reg = builder.getPackageRegistry( pkgDescr.getName() ).getDialectCompiletimeRegistry();
        dialect = reg.getDialect( dialectName );
        compiler = (JavaCompiler) compilerField.get( dialect );
        assertSame( JaninoJavaCompiler.class,
                    compiler.getClass() );


        // test eclipse jdt core with property settings and default source level
        conf = new KnowledgeBuilderConfigurationImpl();
        javaConf = (JavaDialectConfiguration) conf.getDialectConfiguration( "java" );
        javaConf.setCompiler( JavaDialectConfiguration.ECLIPSE );
        builder = new KnowledgeBuilderImpl( conf );
        builder.addPackage( pkgDescr );


        dialectName = (String) dialectField.get( builder );
        reg = builder.getPackageRegistry( pkgDescr.getName() ).getDialectCompiletimeRegistry();

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    }


    @Test
    public void testJaninoWithStaticImports() throws Exception {
        KnowledgeBuilderConfigurationImpl cfg = new KnowledgeBuilderConfigurationImpl();
        JavaDialectConfiguration javaConf = (JavaDialectConfiguration) cfg.getDialectConfiguration( "java" );
        javaConf.setCompiler( JavaDialectConfiguration.JANINO );


        KnowledgeBuilderImpl bldr = new KnowledgeBuilderImpl( cfg );
        bldr.addPackageFromDrl( new StringReader( "package testBuilderPackageConfig \n import java.util.List" ) );
        bldr.addPackageFromDrl( new StringReader( "package testBuilderPackageConfig \n function void doSomething() {\n System.err.println(List.class.toString()); }" ) );

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        final Field compilerField = dialect.getClass().getDeclaredField( "compiler" );
        compilerField.setAccessible( true );
        JavaCompiler compiler = (JavaCompiler) compilerField.get( dialect );


        KnowledgeBuilderConfigurationImpl conf = new KnowledgeBuilderConfigurationImpl();
        JavaDialectConfiguration javaConf = (JavaDialectConfiguration) conf.getDialectConfiguration( "java" );
        switch( javaConf.getCompiler() ) {
            case JavaDialectConfiguration.NATIVE : assertSame( NativeJavaCompiler.class, compiler.getClass() );
                break;
            case JavaDialectConfiguration.ECLIPSE: assertSame( EclipseJavaCompiler.class, compiler.getClass() );
                break;
            case JavaDialectConfiguration.JANINO: assertSame( JaninoJavaCompiler.class, compiler.getClass() );
                break;
            default:
                fail( "Unrecognized java compiler");
        }


        // test JANINO with property settings
        conf = new KnowledgeBuilderConfigurationImpl();
        javaConf = (JavaDialectConfiguration) conf.getDialectConfiguration( "java" );
        javaConf.setCompiler( JavaDialectConfiguration.JANINO );
        builder = new KnowledgeBuilderImpl( conf );
        builder.addPackage( pkgDescr );


        dialectName = (String) dialectField.get( builder );
        reg = builder.getPackageRegistry( pkgDescr.getName() ).getDialectCompiletimeRegistry();
        dialect = reg.getDialect( dialectName );
        compiler = (JavaCompiler) compilerField.get( dialect );
        assertSame( JaninoJavaCompiler.class,
                    compiler.getClass() );


        // test eclipse jdt core with property settings and default source level
        conf = new KnowledgeBuilderConfigurationImpl();
        javaConf = (JavaDialectConfiguration) conf.getDialectConfiguration( "java" );
        javaConf.setCompiler( JavaDialectConfiguration.ECLIPSE );
        builder = new KnowledgeBuilderImpl( conf );
        builder.addPackage( pkgDescr );


        dialectName = (String) dialectField.get( builder );
        reg = builder.getPackageRegistry( pkgDescr.getName() ).getDialectCompiletimeRegistry();

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    }


    @Test
    public void testJaninoWithStaticImports() throws Exception {
        KnowledgeBuilderConfigurationImpl cfg = new KnowledgeBuilderConfigurationImpl();
        JavaDialectConfiguration javaConf = (JavaDialectConfiguration) cfg.getDialectConfiguration( "java" );
        javaConf.setCompiler( JavaDialectConfiguration.JANINO );


        KnowledgeBuilderImpl bldr = new KnowledgeBuilderImpl( cfg );
        bldr.addPackageFromDrl( new StringReader( "package testBuilderPackageConfig \n import java.util.List" ) );
        bldr.addPackageFromDrl( new StringReader( "package testBuilderPackageConfig \n function void doSomething() {\n System.err.println(List.class.toString()); }" ) );

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        }


        Thread.currentThread().setContextClassLoader( newLoader );
        PackageBuilderConfiguration builderConfiguration = new PackageBuilderConfiguration();
        if ( level != null ) {
            JavaDialectConfiguration javaConf = (JavaDialectConfiguration) builderConfiguration.getDialectConfiguration( "java" );
            javaConf.setJavaLanguageLevel( level );
        }
        return builderConfiguration;
    }

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            }
            try {
                Thread.currentThread().setContextClassLoader( newLoader );
                PackageBuilderConfiguration builder_configuration = new PackageBuilderConfiguration();
                if ( level != null ) {
                    JavaDialectConfiguration javaConf = (JavaDialectConfiguration) builder_configuration.getDialectConfiguration( "java" );
                    javaConf.setJavaLanguageLevel( level );
                }


                // first parse the source
                PackageDescr packageDescr = null;
                List<DroolsError> parserErrors = null;

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            }
            try {
                Thread.currentThread().setContextClassLoader( newLoader );
                PackageBuilderConfiguration configuration = new PackageBuilderConfiguration();
                if ( level != null ) {
                    JavaDialectConfiguration javaConf = (JavaDialectConfiguration) configuration.getDialectConfiguration( "java" );
                    javaConf.setJavaLanguageLevel( level );
                }
                
                SemanticModules modules = configuration.getSemanticModules();
                modules.addSemanticModule( new BPMNSemanticModule() );
                modules.addSemanticModule( new BPMNDISemanticModule() );

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