WebSphere Event Broker supports content-based filtering of publications. This allows an MQRFH2 subscriber to restrict the messages that it wants to receive.
When an MQRFH2 client registers a subscription with the local broker, it can specify a filter to be applied to the content of fields within each publication message.
When an MQRFH2 subscriber subscribes to MQRFH publications within the WebSphere MQ Publish/Subscribe part of a mixed broker network, all MQRFH publications are converted to MQRFH2 format by the broker before delivery to the MQRFH2 client
An MQRFH2 subscriber can also request that some content-based filtering is performed on the MQRFH publications that they are subscribing to. This can be done only if the body of the publication is in a format that can be parsed by the broker; that is, if it can be interpreted by one of the broker's default parsers. For example, messages in XML or MQPCF format can be processed in this way.
If you want to make full use of content-based filtering, you must convert publications into MQRFH2 format. Then all messages that are defined in the message repository can be interpreted by the brokers' parsers.
MQRFH clients cannot specify a content filter.
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