Examples of ClassFieldInspector

org.drools.core.util.asm.ClassFieldInspector
Visit a POJO user class, and extract the property getter methods that are public, in the order in which they are declared actually in the class itself (not using introspection). This may be enhanced in the future to allow annotations or perhaps external meta data configure the order of the indexes, as this may provide fine tuning options in special cases.
org.drools.util.asm.ClassFieldInspector
Visit a POJO user class, and extract the property getter methods that are public, in the order in which they are declared actually in the class itself (not using introspection). This may be enhanced in the future to allow annotations or perhaps external meta data configure the order of the indexes, as this may provide fine tuning options in special cases. @author Michael Neale

Examples of org.drools.core.util.asm.ClassFieldInspector

            def.setClassName( concrete.getName() );
            if ( concrete.getSuperclass() != null ) {
                def.setSuperClass( concrete.getSuperclass().getName() );
            }


            ClassFieldInspector inspector = new ClassFieldInspector(concrete);
            Map<String, Method> methods = inspector.getGetterMethods();
            Map<String, Method> setters = inspector.getSetterMethods();
            int j = 0;
            Map<String,TypeFieldDescr> fields = new HashMap<String,TypeFieldDescr>();
            for ( String fieldName : methods.keySet() ) {
                if ( asTrait && ( "core".equals(fieldName) || "fields".equals(fieldName) ) ) {
                    continue;
                }
                if ( !inspector.isNonGetter( fieldName ) && setters.keySet().contains( fieldName ) ) {


                    Position position = null;
                    if ( ! concrete.isInterface() ) {
                        try {
                            Field fld = concrete.getDeclaredField( fieldName );

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Examples of org.drools.core.util.asm.ClassFieldInspector

        return wrapper;
    }




    public ClassDefinition buildClassDefinition(Class<?> klazz, Class<?> wrapperClass) throws IOException {
        ClassFieldInspector inspector = new ClassFieldInspector( klazz );


        ClassFieldAccessorStore store = getClassFieldAccessorStore();


        ClassDefinition def;
        if ( ! klazz.isInterface() ) {
            String className = wrapperClass.getName();
            String superClass = wrapperClass != klazz ? klazz.getName() : klazz.getSuperclass().getName();
            String[] interfaces = new String[ klazz.getInterfaces().length + 1 ];
            for ( int j = 0; j <  klazz.getInterfaces().length; j++ ) {
                interfaces[ j ] = klazz.getInterfaces()[ j ].getName();
            }
            interfaces[ interfaces.length - 1 ] = CoreWrapper.class.getName();
            def = new ClassDefinition( className, superClass, interfaces );
            def.setDefinedClass( wrapperClass );


            Traitable tbl = wrapperClass.getAnnotation( Traitable.class );
            def.setTraitable( true, tbl != null && tbl.logical() );
            Map<String, Field> fields = inspector.getFieldTypesField();
            for ( Field f : fields.values() ) {
                if ( f != null ) {
                    FieldDefinition fld = new FieldDefinition();
                    fld.setName( f.getName() );
                    fld.setTypeName( f.getType().getName() );
                    fld.setInherited( true );
                    ClassFieldAccessor accessor = store.getAccessor( def.getDefinedClass().getName(),
                                                                     fld.getName() );
                    fld.setReadWriteAccessor( accessor );


                    def.addField( fld );
                }
            }
        } else {
            String className = klazz.getName();
            String superClass = Object.class.getName();
            String[] interfaces = new String[ klazz.getInterfaces().length ];
            for ( int j = 0; j <  klazz.getInterfaces().length; j++ ) {
                interfaces[ j ] = klazz.getInterfaces()[ j ].getName();
            }
            def = new ClassDefinition( className, superClass, interfaces );
            def.setDefinedClass( klazz );


            Map<String, Method> properties = inspector.getGetterMethods();
            for ( Method m : properties.values() ) {
                if ( m != null && m.getDeclaringClass() != TraitType.class && m.getDeclaringClass() != Thing.class ) {
                    FieldDefinition fld = new FieldDefinition();
                    fld.setName( getterToFieldName( m.getName() ) );
                    fld.setTypeName( m.getReturnType().getName() );

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Examples of org.drools.core.util.asm.ClassFieldInspector

            if ( getTrait().getDefinedClass() != null ) {
                Trait annTrait = getAnnotation( getTrait().getDefinedClass(), Trait.class );
                if ( hasImpl( annTrait ) ) {
                    mixinClass = annTrait.impl();
                    mixin = mixinClass.getSimpleName().substring(0,1).toLowerCase() + mixinClass.getSimpleName().substring(1);
                    ClassFieldInspector cfi = new ClassFieldInspector( mixinClass );


                    for ( Method m : mixinClass.getMethods() ) {
                        try {
                            getTrait().getDefinedClass().getMethod(m.getName(), m.getParameterTypes() );
                            if ( cfi.getGetterMethods().containsValue( m )
                                    || cfi.getSetterMethods().containsValue( m )) {
                                mixinGetSet.put( m.getName(), m );
                            } else {
                                mixinMethods.add( m );
                            }
                        } catch ( NoSuchMethodException e ) {

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Examples of org.drools.core.util.asm.ClassFieldInspector

                // then just create an instance of the special class field extractor
                return new SelfReferenceClassFieldReader( clazz,
                                                          fieldName );
            } else {
                // otherwise, bytecode generate a specific extractor
                ClassFieldInspector inspector = inspectors.get( clazz );
                if ( inspector == null ) {
                    inspector = new ClassFieldInspector( clazz );
                    inspectors.put( clazz,
                                    inspector );
                }
                Class< ? > fieldType = (Class< ? >) inspector.getFieldTypes().get( fieldName );
                Method getterMethod = (Method) inspector.getGetterMethods().get( fieldName );
                Integer index = (Integer) inspector.getFieldNames().get( fieldName );
                if ( fieldType == null && fieldName.length() > 1 && Character.isLowerCase( fieldName.charAt( 0 ) ) && Character.isUpperCase( fieldName.charAt(1) ) ) {
                    // it might be that odd case of javabeans naming conventions that does not use lower case first letters if the second is uppercase
                    String altFieldName = Character.toUpperCase( fieldName.charAt( 0 ) ) + fieldName.substring( 1 );
                    fieldType = (Class< ? >) inspector.getFieldTypes().get( altFieldName );
                    if( fieldType != null ) {
                        // it seems it is the corner case indeed.
                        getterMethod = (Method) inspector.getGetterMethods().get( altFieldName );
                        index = (Integer) inspector.getFieldNames().get( altFieldName );
                    }
                }
                if ( fieldType != null && getterMethod != null ) {
                    final String className = ClassFieldAccessorFactory.BASE_PACKAGE + "/" + Type.getInternalName( clazz ) + Math.abs( System.identityHashCode( clazz ) ) + "$" + getterMethod.getName();

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Examples of org.drools.core.util.asm.ClassFieldInspector

        ByteArrayClassLoader byteArrayClassLoader = cache.getByteArrayClassLoader();
        Map<Class< ? >, ClassFieldInspector> inspectors = cache.getInspectors();
        
        try {
            // otherwise, bytecode generate a specific extractor
            ClassFieldInspector inspector = inspectors.get( clazz );
            if ( inspector == null ) {
                inspector = new ClassFieldInspector( clazz );
                inspectors.put( clazz,
                                inspector );
            }
            Method setterMethod = (Method) inspector.getSetterMethods().get( fieldName );
            Integer index = (Integer) inspector.getFieldNames().get( fieldName );
            if ( setterMethod == null && fieldName.length() > 1 && Character.isLowerCase( fieldName.charAt( 0 ) ) && Character.isUpperCase( fieldName.charAt(1) ) ) {
                // it might be that odd case of javabeans naming conventions that does not use lower case first letters if the second is uppercase
                String altFieldName = Character.toUpperCase( fieldName.charAt( 0 ) ) + fieldName.substring( 1 );
                setterMethod = (Method) inspector.getSetterMethods().get( altFieldName );
                index = (Integer) inspector.getFieldNames().get( altFieldName );
            }
            if ( setterMethod != null ) {
                final Class< ? > fieldType = setterMethod.getParameterTypes()[0];
                final String className = ClassFieldAccessorFactory.BASE_PACKAGE + "/" + Type.getInternalName( clazz ) + Math.abs( System.identityHashCode( clazz ) ) + "$" + setterMethod.getName();


                // generating byte array to create target class
                final byte[] bytes = dumpWriter( clazz,
                                                 className,
                                                 setterMethod,
                                                 fieldType,
                                                 clazz.isInterface() );
                // use bytes to get a class 


                final Class< ? > newClass = byteArrayClassLoader.defineClass( className.replace( '/',
                                                                                                 '.' ),
                                                                              bytes,
                                                                              PROTECTION_DOMAIN );
                // instantiating target class
                final ValueType valueType = ValueType.determineValueType( fieldType );
                final Object[] params = {index, fieldType, valueType};
                return (BaseClassFieldWriter) newClass.getConstructors()[0].newInstance( params );
            } else {
                if ( inspector.getFieldNames().containsKey( fieldName ) ) {
                    if ( inspector.getGetterMethods().get( fieldName ) != null ) {
                        // field without setter
                        return null;
                    } else {
                        // public field
                        return null;

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Examples of org.drools.core.util.asm.ClassFieldInspector

     * @param fieldName
     */
    public BaseClassFieldWriter(final Class< ? > clazz,
                                final String fieldName) {
        try {
            final ClassFieldInspector inspector = new ClassFieldInspector( clazz );
            this.index = ((Integer) inspector.getFieldNames().get( fieldName )).intValue();
            this.fieldType = (Class< ? >) inspector.getFieldTypes().get( fieldName );
            this.valueType = ValueType.determineValueType( this.fieldType );
        } catch ( final Exception e ) {
            throw new RuntimeException( e );
        }
    }

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Examples of org.drools.core.util.asm.ClassFieldInspector

            if ( getTrait().getDefinedClass() != null ) {
                Trait annTrait = getAnnotation( getTrait().getDefinedClass(), Trait.class );
                if ( hasImpl( annTrait ) ) {
                    mixinClass = annTrait.impl();
                    mixin = mixinClass.getSimpleName().substring(0,1).toLowerCase() + mixinClass.getSimpleName().substring(1);
                    ClassFieldInspector cfi = new ClassFieldInspector( mixinClass );


                    for ( Method m : mixinClass.getMethods() ) {
                        try {
                            getTrait().getDefinedClass().getMethod(m.getName(), m.getParameterTypes() );
                            if ( cfi.getGetterMethods().containsValue( m )
                                    || cfi.getSetterMethods().containsValue( m )) {
                                mixinGetSet.put( m.getName(), m );
                            } else {
                                mixinMethods.add( m );
                            }
                        } catch (NoSuchMethodException e) {

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Examples of org.drools.util.asm.ClassFieldInspector

     * @param fieldName
     */
    public BaseClassFieldWriter(final Class< ? > clazz,
                                final String fieldName) {
        try {
            final ClassFieldInspector inspector = new ClassFieldInspector( clazz );
            this.index = ((Integer) inspector.getFieldNames().get( fieldName )).intValue();
            this.fieldType = (Class< ? >) inspector.getFieldTypes().get( fieldName );
            this.valueType = ValueType.determineValueType( this.fieldType );
        } catch ( final Exception e ) {
            throw new RuntimeDroolsException( e );
        }
    }

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Examples of org.drools.util.asm.ClassFieldInspector

     * @param fieldName
     */
    public BaseClassFieldReader(final Class< ? > clazz,
                                final String fieldName) {
        try {
            final ClassFieldInspector inspector = new ClassFieldInspector( clazz );
            this.index = ((Integer) inspector.getFieldNames().get( fieldName )).intValue();
            this.fieldType = (Class< ? >) inspector.getFieldTypes().get( fieldName );
            this.valueType = ValueType.determineValueType( this.fieldType );
        } catch ( final Exception e ) {
            throw new RuntimeDroolsException( e );
        }
    }

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Examples of org.drools.util.asm.ClassFieldInspector

                return new MVELClassFieldReader( clazz,
                                                 fieldName,
                                                 cache );
            } else {
                // otherwise, bytecode generate a specific extractor
                ClassFieldInspector inspector = inspectors.get( clazz );
                if ( inspector == null ) {
                    inspector = new ClassFieldInspector( clazz );
                    inspectors.put( clazz,
                                    inspector );
                }
                final Class< ? > fieldType = (Class< ? >) inspector.getFieldTypes().get( fieldName );
                final Method getterMethod = (Method) inspector.getGetterMethods().get( fieldName );
                if ( fieldType != null && getterMethod != null ) {
                    final String className = ClassFieldAccessorFactory.BASE_PACKAGE + "/" + Type.getInternalName( clazz ) + Math.abs( System.identityHashCode( clazz ) ) + "$" + getterMethod.getName();


                    // generating byte array to create target class
                    final byte[] bytes = dumpReader( clazz,
                                                     className,
                                                     getterMethod,
                                                     fieldType,
                                                     clazz.isInterface() );
                    // use bytes to get a class 


                    final Class< ? > newClass = byteArrayClassLoader.defineClass( className.replace( '/',
                                                                                                     '.' ),
                                                                                  bytes,
                                                                                  PROTECTION_DOMAIN );
                    // instantiating target class
                    final Integer index = (Integer) inspector.getFieldNames().get( fieldName );
                    final ValueType valueType = ValueType.determineValueType( fieldType );
                    final Object[] params = {index, fieldType, valueType};
                    return (BaseClassFieldReader) newClass.getConstructors()[0].newInstance( params );
                } else {
                    throw new RuntimeDroolsException( "Field/method '" + fieldName + "' not found for class '" + clazz.getName() + "'" );

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