Expression language support for JSON

[nflearl]

In Mule 3, I can have a string payload that consists of JSON and I can do expression language operations on it.

For example,

expression="#[json:job/state]"

retrieves the job state and uses it for a routing descision.

In Spring Integration, I have found that the expression language only seems to support java objects,
e.g.

exchange-name-expression="payload"

If payload is a string, then I can only to String operations on it.
The use case I have is that I want to dynamically route messages to a given exchange (in AMQP) based
on the message contents.

Is there support for this?

Obviously in my service, I could convert the JSON string to a Java JSONObject, but then the outbound adapter would have to serialize back.

Any other ideas would be welcome.

Earl

[ghillert]

Hi Earl,

Thanks for bringing this up. We certainly need to improve our JSON support to cover your use-case. Consequently I have created a Jira to add support for JsonPath:

https://jira.springsource.org/browse/INTEXT-29

My thoughts right now, would be to provide Adapters similar to the XPath support we have, adding JSon specific Routers, Enrichers and Filters. I am not so sure, yet, regarding adding support directly into SpEL.

Please let us know any additional thoughts you have.

Cheers,

Gunnar