Examples of org.drools.factmodel.FieldDefinition

org.drools.factmodel.FieldDefinition
Declares a field to be dynamically generated.

        int j = 0;
        for ( FieldDefinition traitField : tdef.getFieldsDefinitions() ) {
            boolean isSoftField = TraitRegistry.isSoftField( traitField, j++, mask );
            if ( ! isSoftField ) {
                String traitFieldHook = traitField.resolveAlias( );
                FieldDefinition field = cdef.getFieldByAlias( traitFieldHook );


                Field staticField;
                try {
                    if ( ( cdef.isFullTraiting() && ( ! traitField.getType().isPrimitive() || field.getType().equals( traitField.getType() ) ) )
                         || field.getType().isAssignableFrom( traitField.getType() ) ) {
                        staticField = proxyClass.getField( traitField.getName() + "_reader" );
                        staticField.set( null, field.getFieldAccessor().getReadAccessor() );


                        staticField = proxyClass.getField( traitField.getName() + "_writer" );
                        staticField.set( null, field.getFieldAccessor().getWriteAccessor() );
                    }
                } catch (NoSuchFieldException e) {
                    e.printStackTrace();  //To change body of catch statement use File | Settings | File Templates.
                } catch (IllegalAccessException e) {
                    e.printStackTrace();  //To change body of catch statement use File | Settings | File Templates.

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        def.setDefinedClass( wrapperClass );


        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 );
            }
        }

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            mv.visitCode();


            if ( core.isFullTraiting() ) {
                Iterator<FieldDefinition> iter = trait.getFieldsDefinitions().iterator();
                for ( int j = 0; j < trait.getFieldsDefinitions().size(); j++ ) {
                    FieldDefinition fld = iter.next();
                    boolean hardField = ! TraitRegistry.isSoftField( fld, j, mask );
                    shedField( mv, fld, internalProxy, trait, core, hardField, j + 2 );
                }
            }

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                null);
        mv.visitCode();


        if ( core.isFullTraiting() ) {
            // The trait field update will be done by the core setter. However, types may mismatch here
            FieldDefinition hardField = core.getFieldByAlias( field.resolveAlias() );
            if ( ! field.getType().isPrimitive() && ! field.getTypeName().equals( hardField.getTypeName() ) ) {
                boolean isCoreTrait = hardField.getType().getAnnotation( Trait.class ) != null;
                boolean isTraitTrait = field.getType().getAnnotation( Trait.class ) != null;


                Label l0 = new Label();
                mv.visitVarInsn( ALOAD, 1 );
                mv.visitJumpInsn( IFNULL, l0 );
                if ( isCoreTrait && ! isTraitTrait ) {
                    mv.visitVarInsn( ALOAD, 1 );
                    mv.visitTypeInsn( CHECKCAST, Type.getInternalName( TraitableBean.class ) );
                    mv.visitLdcInsn( hardField.getTypeName() );
                    mv.visitMethodInsn( INVOKEINTERFACE, Type.getInternalName( TraitableBean.class ), "getTrait", Type.getMethodDescriptor( Type.getType( Thing.class ), new Type[] { Type.getType( String.class ) } ) );
                    mv.visitVarInsn( ASTORE, 1 );
                } else if ( ! isCoreTrait && isTraitTrait ) {
                    mv.visitVarInsn( ALOAD, 1 );
                    mv.visitTypeInsn( CHECKCAST, Type.getInternalName( TraitProxy.class ) );
                    mv.visitMethodInsn( INVOKEVIRTUAL, Type.getInternalName( TraitProxy.class ), "getObject", Type.getMethodDescriptor( Type.getType( TraitableBean.class ), new Type[]{ } ) );
                    mv.visitVarInsn( ASTORE, 1 );
                } else if ( isCoreTrait && isTraitTrait ) {
                    mv.visitVarInsn( ALOAD, 1 );
                    mv.visitTypeInsn( CHECKCAST, Type.getInternalName( TraitProxy.class ) );
                    mv.visitMethodInsn( INVOKEVIRTUAL, Type.getInternalName( TraitProxy.class ), "getObject", Type.getMethodDescriptor( Type.getType( TraitableBean.class ), new Type[] {} ) );
                    mv.visitTypeInsn( CHECKCAST, Type.getInternalName( TraitableBean.class ) );
                    mv.visitLdcInsn( hardField.getTypeName() );
                    mv.visitMethodInsn( INVOKEINTERFACE, Type.getInternalName( TraitableBean.class ), "getTrait", Type.getMethodDescriptor( Type.getType( Thing.class ), new Type[] { Type.getType( String.class ) } ) );
                    mv.visitVarInsn( ASTORE, 1 );
                } else {
                    // handled by normal inheritance, exceptions should have been thrown
                    if ( ! hardField.getType().isAssignableFrom( field.getType() ) ) {
                        mv.visitInsn( RETURN );
                    }
                }
                Label l1 = new Label();
                mv.visitJumpInsn(GOTO, l1);


                mv.visitLabel( l0 );
                mv.visitInsn( ACONST_NULL );
                mv.visitVarInsn( ASTORE, 1 );
                mv.visitLabel( l1 );
            } else if ( field.getType().isPrimitive() ) {
                if ( ! hardField.getType().equals( field.getType() ) ) {
                    mv.visitInsn( RETURN );
                }
            }
        }

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            mv.visitCode();


            if ( core.isFullTraiting() ) {
                Iterator<FieldDefinition> iter = trait.getFieldsDefinitions().iterator();
                for ( int j = 0; j < trait.getFieldsDefinitions().size(); j++ ) {
                    FieldDefinition fld = iter.next();
                    boolean hardField = ! TraitRegistry.isSoftField( fld, j, mask );
                    synchFieldLogical( mv, fld, proxyName, trait, core, hardField, j + 3 );
                }
            } else {
                for ( FieldDefinition fld : trait.getFieldsDefinitions() ) {
                    if ( fld.getInitExpr() != null ) {
                        synchField( mv, fld, proxyName );
                    }
                }
            }

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    protected void shedField( MethodVisitor mv, FieldDefinition fld, String proxyName, ClassDefinition trait, ClassDefinition core, boolean hardField, int j ) {
        FieldDefinition coreField = core.getFieldByAlias( fld.resolveAlias() );


        mv.visitVarInsn( ALOAD, 0 );
        mv.visitFieldInsn( GETFIELD, BuildUtils.getInternalType( proxyName ), "object", Type.getDescriptor( core.getDefinedClass() ) );
        mv.visitTypeInsn( CHECKCAST, Type.getInternalName( TraitableBean.class ) );
        mv.visitMethodInsn( INVOKEINTERFACE, Type.getInternalName( TraitableBean.class ), "_getFieldTMS", Type.getMethodDescriptor( Type.getType( TraitFieldTMS.class ), new Type[] {} ) );


        mv.visitVarInsn( ASTORE, 1 );
        mv.visitVarInsn( ALOAD, 1 );
        // fld Name
        mv.visitLdcInsn( fld.resolveAlias() );
        // this
        mv.visitVarInsn( ALOAD, 0 );
        // fld type
        if ( BuildUtils.isPrimitive( fld.getTypeName() ) ) {
            mv.visitLdcInsn( Type.getType( BuildUtils.getTypeDescriptor( BuildUtils.box( fld.getTypeName() ) ) ) );
        } else {
            mv.visitLdcInsn( Type.getType( Type.getDescriptor( fld.getType() ) ) );
        }


        if ( hardField ) {
            if ( BuildUtils.isPrimitive( coreField.getTypeName() ) ) {
                mv.visitLdcInsn( Type.getType( BuildUtils.getTypeDescriptor( BuildUtils.box( coreField.getTypeName() ) ) ) );
            } else {
                mv.visitLdcInsn( Type.getType( Type.getDescriptor( coreField.getType() ) ) );
            }
        } else {
            mv.visitLdcInsn( Type.getType( Type.getDescriptor( Object.class ) ) );
        }




        mv.visitMethodInsn( INVOKEINTERFACE,
                            Type.getInternalName( TraitFieldTMS.class ),
                            "shedField",
                            Type.getMethodDescriptor( Type.getType( Object.class ), new Type[] {
                                    Type.getType( String.class ), Type.getType( TraitType.class ), Type.getType( Class.class ), Type.getType( Class.class )
                            } ) );


        mv.visitVarInsn( ASTORE, j );


        if ( hardField ) {
            mv.visitVarInsn( ALOAD, 0 );
            mv.visitFieldInsn( GETFIELD, BuildUtils.getInternalType( proxyName ), "object", Type.getDescriptor( core.getDefinedClass() ) );


            mv.visitVarInsn( ALOAD, j );
            if ( BuildUtils.isPrimitive( coreField.getTypeName() ) ) {
                Label l0 = new Label();
                mv.visitJumpInsn( IFNULL, l0 );
                mv.visitVarInsn( ALOAD, j );
                mv.visitTypeInsn( CHECKCAST, BuildUtils.getInternalType( BuildUtils.box( coreField.getTypeName() ) ) );
                mv.visitMethodInsn( INVOKEVIRTUAL,
                                    BuildUtils.getInternalType( BuildUtils.box( coreField.getTypeName() ) ),
                                    BuildUtils.numericMorph( BuildUtils.box( coreField.getTypeName() ) ),
                                    Type.getMethodDescriptor( Type.getType( coreField.getType() ), new Type[] {} ) );
                Label l1 = new Label();
                mv.visitJumpInsn( GOTO, l1 );
                mv.visitLabel( l0 );
                mv.visitInsn( BuildUtils.zero( coreField.getTypeName() ) );
                mv.visitLabel( l1 );
            } else {
                mv.visitTypeInsn( CHECKCAST, Type.getInternalName( coreField.getType() ) );
            }


            mv.visitMethodInsn( INVOKEVIRTUAL,
                                Type.getInternalName( core.getDefinedClass() ),
                                BuildUtils.setterName( coreField.getName(), coreField.getTypeName() ),
                                "(" + BuildUtils.getTypeDescriptor( coreField.getTypeName() ) + ")" + Type.getDescriptor( void.class ) );
        } else {
            mv.visitVarInsn( ALOAD, 0 );
            mv.visitFieldInsn( GETFIELD, BuildUtils.getInternalType( proxyName ), "map", Type.getDescriptor( Map.class ) );


            mv.visitLdcInsn( fld.resolveAlias() );

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        int j = 0;
        BitSet bitmask = new BitSet( traitDef.getFields().size() );
        for ( FactField field : traitDef.getFields() ) {
            String alias = ((FieldDefinition) field).resolveAlias();


            FieldDefinition concreteField = traitableDef.getFieldByAlias( alias );


            if ( concreteField != null ) {
                if ( ! traitableDef.isFullTraiting() && ! concreteField.getType().isAssignableFrom( field.getType() ) ) {
                    throw new UnsupportedOperationException( " Unable to apply trait " + trait + " to class " + traitable + " :" +
                                                             " trait field " + field.getName() + ":" + ( (FieldDefinition) field ).getTypeName() + " is incompatible with" +
                                                             " concrete hard field " + concreteField.getName() + ":" + concreteField.getTypeName() + ". Consider enabling logical traiting" +
                                                             " mode using @Traitable( logical = true )" );
                }


                bitmask.set( j );
            }

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            mv.visitInsn( DUP );
            mv.visitMethodInsn( INVOKESPECIAL, Type.getInternalName( TraitFieldTMSImpl.class ), "<init>", "()V" );
            mv.visitFieldInsn( PUTFIELD, BuildUtils.getInternalType( wrapperName ), TraitableBean.FIELDTMS_FIELD_NAME, Type.getDescriptor( TraitFieldTMS.class ) );


            for ( FactField hardField : coreDef.getFields() ) {
                FieldDefinition fld = (FieldDefinition) hardField;
                mv.visitVarInsn( ALOAD, 0 );
                mv.visitFieldInsn( GETFIELD, BuildUtils.getInternalType( wrapperName ), TraitableBean.FIELDTMS_FIELD_NAME, Type.getDescriptor( TraitFieldTMS.class ) );


                mv.visitLdcInsn( Type.getType( Type.getDescriptor( coreDef.getDefinedClass() ) ) );


                mv.visitLdcInsn( fld.resolveAlias() );


                if ( BuildUtils.isPrimitive( fld.getTypeName() ) ) {
//                    mv.visitFieldInsn( GETSTATIC, BuildUtils.getInternalType( BuildUtils.box( fld.getTypeName() ) ), "TYPE", Type.getDescriptor( Class.class ) );
                    mv.visitLdcInsn( Type.getType( BuildUtils.getTypeDescriptor( BuildUtils.box( fld.getTypeName() ) ) ) );
                } else {
                    mv.visitLdcInsn( Type.getType( BuildUtils.getTypeDescriptor( fld.getTypeName() ) ) );
                }


                mv.visitVarInsn( ALOAD, 0 );
                mv.visitFieldInsn( GETFIELD, BuildUtils.getInternalType( wrapperName ), "core", Type.getDescriptor( coreDef.getDefinedClass() ) );
                mv.visitMethodInsn( INVOKEVIRTUAL, Type.getInternalName( coreDef.getDefinedClass() ), BuildUtils.getterName( fld.getName(), fld.getTypeName() ), "()" + BuildUtils.getTypeDescriptor( fld.getTypeName() ) );
                if ( BuildUtils.isPrimitive( fld.getTypeName() ) ) {
                    mv.visitMethodInsn( INVOKESTATIC, BuildUtils.getInternalType( BuildUtils.box( fld.getTypeName() ) ), "valueOf", "(" + BuildUtils.getTypeDescriptor( fld.getTypeName() ) + ")" + BuildUtils.getTypeDescriptor( BuildUtils.box( fld.getTypeName() ) ) );
                }


                if ( fld.getInitExpr() != null ) {
                    mv.visitLdcInsn( fld.getInitExpr() );
                } else {
                    mv.visitInsn( ACONST_NULL );
                }


                mv.visitMethodInsn( INVOKEINTERFACE,

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                }


                for ( Field fld : fields ) {
                    Position pos = fld.getAnnotation( Position.class );
                    if ( pos != null ) {
                        FieldDefinition fldDef = new FieldDefinition( fld.getName(),
                                                                      fld.getType().getName() );
                        fldDef.setIndex( pos.value() );
                        orderedFields.set( pos.value(),
                                           fldDef );
                    }
                }
                for ( FieldDefinition fld : orderedFields ) {

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                    continue;
                }
                if ( ! inspector.isNonGetter( fieldName ) && setters.keySet().contains( fieldName )) {


                    Class ret = methods.get( fieldName ).getReturnType();
                    FieldDefinition field = new FieldDefinition();
                    field.setName( fieldName );
                    field.setTypeName( ret.getName() );
                    field.setIndex( j++ );
                    type.getTypeClassDef().addField( field );
                }
            }


            Set<String> interfaces = new HashSet<String>();

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