For each broker, WebSphere® Message
Broker maintains
a set of properties. You can access some of these properties from your ESQL
programs. A subset of the properties is also accessible from Java code. It
can be useful, during the runtime of your code, to have real-time access to
details of a specific node, flow, or broker.
Four categories of broker properties exist.
- Properties relating to a specific node
- Properties relating to nodes in general
- Properties relating to a message flow
- Properties relating to the execution group
For a description of the broker, flow, and node properties that are accessible
from ESQL and Java, see Broker properties that are accessible from ESQL and Java.
Broker properties have the following characteristics.
- They are grouped by broker, execution group, flow, and node.
- They are case sensitive. Their names always start with an uppercase letter.
- They return NULL if they do not contain a value.
All nodes that allow user programs to edit ESQL support access to broker
properties. These nodes are:
- Compute nodes
- Database nodes
- Filter nodes
- All derivatives of these nodes
For more information about editing a node's properties, see Configuring a message flow node.