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

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

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

org.drools.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.

                      list.get( 0 ) );
    }


    public void testJaninoEval() throws Exception {
        final PackageBuilderConfiguration config = new PackageBuilderConfiguration();
        JavaDialectConfiguration javaConf = (JavaDialectConfiguration) config.getDialectConfiguration( "java" );
        javaConf.setCompiler( JavaDialectConfiguration.JANINO );


        final PackageBuilder builder = new PackageBuilder( config );
        builder.addPackageFromDrl( new InputStreamReader( getClass().getResourceAsStream( "eval_rule_test.drl" ) ) );
        final Package pkg = builder.getPackage();

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        final PackageDescr packageDescr = parser.parse( reader );
        if ( parser.hasErrors() ) {
            fail( "Error messages in parser, need to sort this our (or else collect error messages)\n" + parser.getErrors() );
        }
        // pre build the package
        JavaDialectConfiguration jconf = (JavaDialectConfiguration) conf.getDialectConfiguration( "java" );
        // required because JANINO compiler fails for some java 5 code features
        jconf.setCompiler( JavaDialectConfiguration.ECLIPSE );
        final PackageBuilder builder = new PackageBuilder( conf );
        builder.addPackage( packageDescr );
        if ( builder.hasErrors() ) {
            fail( builder.getErrors().toString() );
        }

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        if ( javaVersion.equals( "1.4" ) ) {
            System.out.println( "Skipping Java 1.5 tests - current JDK not compatible" );
            return;
        }
        final PackageBuilderConfiguration conf = new PackageBuilderConfiguration();
        JavaDialectConfiguration javaConf = ( JavaDialectConfiguration ) conf.getDialectConfiguration( "java" );
        javaConf.setCompiler( JavaDialectConfiguration.ECLIPSE );
        javaConf.setJavaLanguageLevel( "1.5" );
        
        final PackageBuilder builder = new PackageBuilder( conf );
        builder.addPackageFromDrl( new InputStreamReader( this.getClass().getResourceAsStream( "java5_rule.drl" ) ) );
        if ( builder.hasErrors() ) {
            fail( builder.getErrors().toString() );

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    }


    @Test
    public void testJava14Defaults() throws Exception {
        final PackageBuilderConfiguration conf = new PackageBuilderConfiguration();
        JavaDialectConfiguration javaConf = ( JavaDialectConfiguration ) conf.getDialectConfiguration( "java" );
        javaConf.setCompiler( JavaDialectConfiguration.JANINO );
        final PackageBuilder builder = new PackageBuilder( conf );
        builder.addPackageFromDrl( new InputStreamReader( this.getClass().getResourceAsStream( "java5_rule.drl" ) ) );
        assertTrue( builder.hasErrors() );
    }

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    }


    @Test
    public void testSystemProperties() {
        PackageBuilderConfiguration cfg = new PackageBuilderConfiguration();
        JavaDialectConfiguration javaConf = (JavaDialectConfiguration) cfg.getDialectConfiguration( "java" );
        assertEquals( JavaDialectConfiguration.ECLIPSE,
                      javaConf.getCompiler() );


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


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


        System.setProperty( "drools.dialect.java.compiler",
                            "ECLIPSE" );
        cfg = new PackageBuilderConfiguration();
        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 PackageBuilderConfiguration cfg3 = new PackageBuilderConfiguration();
        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 PackageBuilderConfiguration());
        javaConf.setCompiler( JavaDialectConfiguration.ECLIPSE );
        PackageBuilderConfiguration cfg = new PackageBuilderConfiguration();
        cfg.setDialectConfiguration( "java", javaConf );
        JavaDialectConfiguration javaConf2 = (JavaDialectConfiguration) cfg.getDialectConfiguration( "java" );
        assertSame( javaConf,
                    javaConf2 );
        assertEquals( JavaDialectConfiguration.ECLIPSE,
                      javaConf2.getCompiler() );


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

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        assertSame( EclipseJavaCompiler.class,
                    compiler.getClass() );


        // test JANINO with property settings
        PackageBuilderConfiguration conf = new PackageBuilderConfiguration();
        JavaDialectConfiguration javaConf = (JavaDialectConfiguration) conf.getDialectConfiguration( "java" );
        javaConf.setCompiler( JavaDialectConfiguration.JANINO );
        builder = new PackageBuilder( 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 PackageBuilderConfiguration();
        javaConf = (JavaDialectConfiguration) conf.getDialectConfiguration( "java" );
        javaConf.setCompiler( JavaDialectConfiguration.ECLIPSE );
        builder = new PackageBuilder( 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 {
        PackageBuilderConfiguration cfg = new PackageBuilderConfiguration();
        JavaDialectConfiguration javaConf = (JavaDialectConfiguration) cfg.getDialectConfiguration( "java" );
        javaConf.setCompiler( JavaDialectConfiguration.JANINO );


        PackageBuilder bldr = new PackageBuilder( 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 testJaninoEval() throws Exception {
        final PackageBuilderConfiguration config = new PackageBuilderConfiguration();
        JavaDialectConfiguration javaConf = (JavaDialectConfiguration) config.getDialectConfiguration( "java" );
        javaConf.setCompiler( JavaDialectConfiguration.JANINO );


        final PackageBuilder builder = new PackageBuilder( config );
        builder.addPackageFromDrl( new InputStreamReader( getClass().getResourceAsStream( "eval_rule_test.drl" ) ) );
        final Package pkg = builder.getPackage();

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    }


    @Test
    public void testWithInvalidRule() throws Exception {
        final PackageBuilderConfiguration conf = new PackageBuilderConfiguration();
        final JavaDialectConfiguration jconf = (JavaDialectConfiguration) conf.getDialectConfiguration( "java" );
        jconf.setCompiler( JavaDialectConfiguration.ECLIPSE );
        final PackageBuilder builder = new PackageBuilder( conf );
        builder.addPackageFromDrl( new InputStreamReader( getClass().getResourceAsStream( "invalid_rule.drl" ) ) );
        final Package pkg = builder.getPackage();
        // Mark: please check if the conseqeuence/should/shouldn't be built
        // Rule badBoy = pkg.getRules()[0];

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