BPEL variables

Similar to Java, BPEL Variables are used to contain temporary data. A variable can either contain an XSD value or a WSDL message.

Oracle BPEL Process Manager has the following types of variables:

  • XML schema type (Type)
  • WSDL message type (Message Type)
  • XML schema element (Element)

Message Type variables are used to hold data in interactions between the process and its partner services.

The BPEL variable holds the message data between a BPEL client, external services, and local data used by the BPEL process. The sample code for declaring a variable in BPEL is given as follows:

<variables>
  <variable   name="hello_world" 
              messageType="Type" />
</variables>

Each variable can be declared as a messageType or an element. As shown in the following ...

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