Explains the Anypoint Filters, Routers and Scopes, what are they used for, how are they used.

1. Mule Concepts
Elements in a Mule Flow :
Filters, Scopes and Routers

2. • Mule includes a variety of message processors
designed to facilitate message routing or filtering,
and message processor wrapping.
• They can be categorized as follows :
– Filters
– Scopes
– Routers
Elements in a Mule Flow

3. • Filters :
– Filters evaluate a message to determine whether it can
proceed through a flow.
– The simplest filters implement basic logic operators (such
as and, or, and not)
– These simple elements can be combined in various ways to
specify complex logical conditions.
– Example :
• a filter near the beginning of your flow can be used to reject any
requests from a particular range of IP addresses, or simply use a
filter to reject any messages with a particular payload, or with a
null payload
Elements in a Mule Flow : Filters

4. • Filters Example
(Expression Filter):
Elements in a Mule Flow : Filters

5. • Scopes :
– Work to encapsulate other message processors so that
they function as a single unit.
– You might wrap several message processors together to
form a transactional unit, so that they succeed or fail to
process a message together.
– This ensures accurate updating of a database, for
example.
– Example :
• You might wrap several message processors together within
acache scope to store the result of their processing for reuse, or
wrap a single message processor within a message enricher scope
to add to a message payload without manipulating the original
contents.
Elements in a Mule Flow : Scopes

6. • Scopes Example (Message Enricher and Cache Scope):
Elements in a Mule Flow : Scopes

7. • Routers / flow controls:
– Are used to direct or otherwise control messages within a flow.
– At times, flow controls act as splitters, resequencers, or
aggregators, splitting messages into individual items for
processing, resequencing message content, or aggregating split
messages.
– At times, they act as forks in the road, evaluating a message’s
payload, properties, or variables, then routing to the message
down a particular "pathway" according to those contents.
– Thus, flow controls facilitate content-based routing.
– Example :
• you can use a choice flow control to examine part of a message
payload, then route the message to the first "pathway" for which the
set condition evaluates to true, such as where an order exceeds
$5,000.
Elements in a Mule Flow : Routers

8. • Routers / flow controls Example (Choice Router):
Elements in a Mule Flow : Routers

9. Mule Concepts
Thank You.