The following example shows the definitions for a stateless and a stateful topic:

<topics>
    <stateless name="example/updates/stateless"/>
    <stateful name="example/updates/stateful" initialState="rhubarb"/>
</topics>

• The JMS adapter cannot create or use topics that are in a branch of the topic tree that is created by another publisher or client. For example, if example/updates already exists and was created by a Diffusion client, the JMS adapter cannot create and use example/updates/stateless.
• Similarly, other clients and publishers cannot create or use topics in a branch of the topic tree that was created by the JMS adapter.
• All stateful topics are created as binary topics.
• Stateless topics are created as binary topics, with topic property DONT_RETAIN_VALUE set to true.
• When defining a stateful topic, you must set the initial state of the topic.