Event Definitions

Info

When using WSO2 CEP we don't need to define the streams, this is because WSO2 CEP will infer the stream definitions from the Input Mappings.

<define-stream> ::= define stream <stream-name>
<attribute-name> <type> {<attribute-name> <type>}

All streams that cannot be derived from queries must be defined before use.

Following example shows a sample stream definition;

Defining a stream called StockExchangeStream having three attributes, where symbol of type string, price of type float and volume of type int.

define stream StockExchangeStream (symbol string, price float, volume int );