Thanks Bryan. I will take a look. I might have a few questions to resolve errors from the UI once I try again.

On Tue, Nov 3, 2015 at 10:14 AM, Bryan Bende <> wrote:
If you can share a little more info about what the API that you're trying to interact with looks like, we can likely provide more concrete guidance. 

As a very basic test, to familiarize yourself with the Expression Language, you could create a "dummy flow" such as:
- GenerateFlowFile to create a new FlowFile on a timer
- UpdateAttribute to set attributes you want to be passed to your API, you can use expression language here to create dynamic date/time values
- InvokeHttp to call your API
- You could then route the "Response" relationship from InvokeHttp to some other processor to possibly extract information from the response for further use 

Let us know if we can help more.

On Tue, Nov 3, 2015 at 9:51 AM, Christopher Hamm <> wrote:

I am trying to query api based on date/time and possibly based on results from fields of another query.

On Nov 3, 2015 9:41 AM, "Bryan Bende" <> wrote:

In terms of templates, the best resources we have right now are:

For expression language we have the EL guide:

Is there a specific flow you are trying to tackle?


On Tue, Nov 3, 2015 at 9:36 AM, Christopher Hamm <> wrote:

Is there a repo of nifi templates with advanced features that use lots of expression language expecially when used to make requests? I can't find enough docs or youtube videos that really dig into it.

Chris Hamm