Документация

classdef CustomBlockTwoEntityStorages < matlab.DiscreteEventSystem & ...
                                  matlab.system.mixin.Propagates                               
    % Select from stored entities based on a lookup key.
    
    properties (Nontunable)
        % Capacity
        capacity = 100;
    end
    
    properties (DiscreteState)
        InputKey;
    end
    
   methods (Access=protected)

        function num = getNumInputsImpl(~)
            num = 2;
        end
        
        function num = getNumOutputsImpl(~)
            num = 1;
        end
      
        function [entityTypes] = getEntityTypesImpl(obj)
            entityTypes = [obj.entityType('Item'), ...
                           obj.entityType('Order')];
        end
        
        function [inputTypes, outputTypes] = getEntityPortsImpl(~)
            inputTypes = {'Item' 'Order'};
            outputTypes = {'Item'};
        end
        
        function [storageSpecs, I, O] = getEntityStorageImpl(obj)
            storageSpecs = [obj.queueFIFO('Item', obj.capacity)...
                obj.queueFIFO('Order', obj.capacity)];
            I = [1 2];
            O = 1;
        end
        
        function [sz, dt, cp] = getDiscreteStateSpecificationImpl(obj, name)
            sz = 1;
            dt = 'double';
            cp = false;
        end
        
        function resetImpl(obj)
            obj.InputKey = 0;
        end
    end
    
    methods

        function [Order,events] = OrderEntry(obj, storage, Order, source)
            % A key entity has arrived; record the Inputkey value.
            obj.InputKey = Order.data.Key;
            % Schedule an iteration of the entities in storage 1.
            % Destroy input key entity.
            events = [obj.eventIterate(1, '') ...   
                      obj.eventDestroy()];
            coder.extrinsic('fprintf');      
            fprintf('Order Key Value: %f\n', Order.data.Key);
        end
        
        function [Item,events,continueIter] = ItemIterate(obj,...
                                                   storage, Item, tag, cur)
            % Find entities with matching key.
            events = obj.initEventArray;
            continueIter = true;

            if (Item.data.Attribute1 == obj.InputKey)
                events = obj.eventForward('output', 1, 0.0);
                % If a match is found, the iteration ends and the state is reset.
                continueIter = false;

            elseif cur.size == cur.position
                % If a match is not found, a new matching entity is generated.
                events = obj.eventGenerate(1,'mygen',0.0,100);
            end
        end

        function [Item,events] = ItemGenerate(obj,storage,Item,tag)            
            % Specify event actions when entity generated in the storage.            
            Item.data.Attribute1 = obj.InputKey;   
            events = obj.eventForward('output',1,0.0);
        end
    end
end