Object Chain

Message processor chain processing object

The message processor chain processing object is used to link a series of message processors, and chain processing in a specified order. Creation method:

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var chain = new mq.Chain([
    func1, func2
]);

Inheritance

Constructor

Chain

Construct a message processor chain processing object

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new Chain(Array hdlrs);

Call parameters:

• hdlrs : Array, processor array

Member function

append

Add processor array

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Chain.append(Array hdlrs);

Call parameters:

• hdlrs : Array, processor array

Add a processor

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Chain.append(Handler hdlr);

Call parameters:

• hdlr : Handler , built-in message processor, processing function, chain processing array, routing object, see mq.Handler details

invoke

Process a message or object

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Handler Chain.invoke(object v) async;

Call parameters:

• v : object , specify the message or object to be processed

Return result:

• Handler , return to the next processor

toString

Returns the string representation of the object, generally returns "[Native Object]", the object can be re-implemented according to its own characteristics

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String Chain.toString();

Return result:

• String , returns the string representation of the object

toJSON

Returns the JSON format representation of the object, generally returns a collection of readable attributes defined by the object

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Value Chain.toJSON(String key = "");

Call parameters:

• key : String, unused

Return result:

• Value , returns a value containing JSON serializable