Mediators

In WSO2, a mediator is a piece of code that has a logical behavior and a final purpose for using it, having an XML structure. By default, we have a list of mediators that we can use Out of the Box, but we can also develop a custom mediator to extend the default functionality.

When we have a set of mediators that perform an action together, it's called sequences: We can use it in Proxies and APIs.

The property mediator

A property is a variable that stores some information during a time that depends on the scope it has configured.

Here's the syntax:

<property name="string" [action=set|remove] [type="string"] (value="literal" | expression="xpath") [scope=default|transport|axis2|axis2-client] [pattern="regex" [group="integer"]]>
    <xml-element/>?
</property>  

We have three different types of properties:

1. Static: Get a static value in the creation:

<property name="color" value="red" />

2. Dynamic: Get a dynamic value:
   • From an xpath expression:

<property name="dynamic1...