Hi Kasthuriraajan, If we can improve the DBLookup mediator to retrieve more than a single row in a database I think that is definitely an improvement.
If you are implementing this improvement, it seems to me like the name "DSS-Call" is a bit misleading since we will not be doing an actual call. How about something like "ExtendedDBLookup" or something similar ? I am not clear on whether all the CRUD operations be supported with this mediator. Then we would need to use a different name altogether. +1 for the idea of bypassing the transport layers and directly talking to the data service components to execute the queries. Regards Gayan On Fri, Feb 16, 2018 at 1:25 AM, Kasthuriraajan Ratnasingam < kasthuriraa...@wso2.com> wrote: > > > Hi all, > > I am working on a project to implement a DSS-call mediator . > > > * If we need to consume DSS service from an ESB sequence, we have to do a > HTTP call using send or call mediator (just like any other remote HTTP > service). This is a very inefficient way as HTTP call will introduce an > additional latency and performance overhead. EI product comes with DSS > feature built in but there is no way to properly avoid remote HTTP call > when calling data service which hosted in the same server. We can avoid the > HTTP call using local transport in the EI. However axis2 service invocation > overhead is still there and we need to build a new request payload to > invoke DSS service even with local transport.Even local transport gives a > better performance than HTTP call, it is not a fully optimized solution. > That's why this new project idea to build new DSS-Call mediator which can > do direct data service calls without going through send or call mediator > and http request (in JVM DSS invocation). The new approach is to come up > with a DBLookup mediator style invocation for data service. DBLookup > mediator can fetch only one row of the result of a query. Because of that > we are using data service. So that the new mediator should have the > privileges to invoke all the facilities of a data service with the in JVM > call. * > Please give your comments and suggestions regarding this project. > > Thank you. > > Regards, > R.Kasthuriraajan. > > -- > R.Kasthuriraajan > Software Engineering Intern | WSO2 > LinkedIn: https://www.linkedin.com/in/ratnasingam-kasthuriraajan-2a6892121 > > Email: kasthuriraa...@wso2.com > Mobile : +94779893005 <+94%2077%20989%203005> > Web: http://wso2.com <http://wso2.com/> > > -- Gayan Dhanuska Senior Software Engineer http://wso2.com/ Lean Enterprise Middleware Mobile - LK- 071 666 2327 Mobile USA - 612-244-4873 Office Tel : 94 11 214 5345 Fax : 94 11 214 5300
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