Content based filters in IBM Integration Bus extend WebSphere MQ message selectors to allow the
use of ESQL expressions to filter on the entire message.
You can use the following items:
- Correlation names
- In content based filters, the message can be accessed
using the Root, Body, and
Properties correlation names.
Any other
correlation name is interpreted as a
WebSphere MQ message property, apart
from the following list of excluded reserved names:
- Database
- DestinationList
- Environment
- LocalEnvironment
- ExceptionList
- LocalEnvironment
Any other top level identifier is assumed to be a WebSphere MQ message property, and is accepted.
- Trees
- The content based filtering engine does not update the message
tree. It accesses the message tree as read-only. Any statements
that attempt to modify the tree are rejected.
By supporting
ESQL, content based filtering in IBM Integration Bus supports
fully-qualified Namespaces, as documented in ESQL reference.
- ESQL expressions
- Content based filtering accepts any ESQL expression, with the
exclusion of database access, that returns a Boolean value.