Please guide me regarding ExecutionFactory implementation

[klmurty]

I have to do few steps to be executed before the query is executed by teiid engine.

To do this, I hope we need to extend ExecutorFactory, But please clarify to achieve this.

[rareddy]

Execute the query sent to Data Source by Teiid engine or query sent by the user to Teiid engine?

[klmurty]

Thanks for reply Ramesh.

What methods do i need to override ??

Any init() kind of method available ?,

Can we override/implement that method to execute pre-fucntionality before executing the actual query

[rareddy]

You did not answer my question, and asking vague questions we have no context in giving a right answer

[shawkins]

> What methods do i need to override ??

That depends on what you are trying to accomplish.  The typical development approach is to start by looking at an existing translator that is closest to what you are trying to develop: teiid/connectors at master · teiid/teiid · GitHub

See Translator Development · Teiid Documentation and you can also setup a new project using maven: https://github.com/teiid/teiid-tools/blob/master/arche-types/translator-archetype/TranslatorArcheType.adoc

> Any init() kind of method available ?,

Yes there is a start method.

> Can we override/implement that method to execute pre-fucntionality before executing the actual query

No, it is a one-time method.  Each query must go through createExecution, or one of the sub methods - for example createResultSetExecution

[klmurty]

Execute the query sent to Data Source by Teiid engine

[klmurty]

I need answers for both questions.

1) Execute the query sent to Data Source by Teiid engine

2) query sent by the user to Teiid engine

[rareddy]

Look for PreParser in document for user query. For Teiid query to change, either extend the translator or write new one  tt suit your needs .