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Broker properties
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™ programs. It can be useful, at run time, to have real-time access to details of a specific node, flow, or broker.
- Properties that relate to a specific node
- Properties that relate to nodes in general
- Properties that relate to a message flow
- Properties that relate 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.
- 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.
- Compute nodes
- Database nodes
- DatabaseInput nodes
- Filter nodes
- All derivatives of these nodes
User-defined properties can be queried, discovered, and set at run time to dynamically change the behavior of a message flow. You can use the Message Broker API(CMP API) to manipulate these properties, which can be used by a systems monitoring tool to perform automated actions in response to situations that it detects in the monitored systems. For more information, see User-defined properties.
A complex property is a property to which you can assign multiple values. Complex properties are displayed in a table in the Properties view, where you can add, edit, and delete values, and change the order of the values in the table. You cannot promote complex properties; therefore, they are not shown in the Promote properties dialog box. Nor can you configure complex properties; therefore, they are not supported in the Broker Archive editor. For an example of a complex property, see the Query elements property of the DatabaseRoute node.
For more information about editing the properties of a node, see Configuring a message flow node.