Is there any option readily available to integrate apache arrow and apache calcite?
I observed that CSV, JSON has this integration feature. but Apache Arrow doesn't have this.
we have to write all these classes like calcite-arrow-sample since its not readily available from api it self.
After extensive research, found that This feature is not readily available as of today and have to write the code following calcite-arrow-sample
. I wrote this feature in java emulating the code features in above link.
Related
I have building search engine of a website by Azure search and need to add some complex logic rule in searching. It's can be written easily in programming languages: C#, python...but hard in query syntax. I saw Solr has feature like FunctionQueries and elastics search can run a python script. How about Azure search service?
It's not supported.
Maybe there is a different way to enable your scenario. Feel free to reach out to me at jlembicz at Microsoft com to discus your requirements in detail.
I just started my adventure with the Redmine 3.0, the project manager.
I can't Google out if there is an option to export its calendar to e.g. thunderbird-ligthning. There are some plugins, but they are not compatible with current Redmine 3.0. I couldn't find out anything relevant in the changelog, too.
Can anyone tell me from their own experience, if (and how) this feature is available?
Generally, anything that exports to the ics format can be made available to Thunderbird/Lightning, or any other calendaring program. The other option is to make use of the caldav protocol, which is also standardized.
I have heard reports that this fork of the redmime ics export plugin works for 3.x, but I haven't tested it myself. Maybe you can give it a try.
If you would like to create your own, I'd suggest adapting sabreDAV to use redmime as a backend. As an example for how to write a custom sabre frontend for a different service, check out this work.
I have a Windows Embedded Compact 7.0 based development board which has a HTTPD webserver and SQL Compact DB,
Objective: My task is to deploy few HTML5 pages and create C++ component for DB access.
Current solution : Currently we are thinking of CGI interface between HTML5 and C++
component, not sure if this is possible , but our vendor (where this board bought from) confirmed that WinCE can support ISAPI (much faster CGI).
I would like to know if we are in a right direction? or Is there a alternate solution to this?
Asking this question because I came across this article in Code project about http://www.codeproject.com/Articles/336018/Building-C-Applications-with-HTML[Building C++ Application with HTML5] which talks about usage of Webkit and Qt.
Please let me know if I can explore as per this article. Can this work under Embedded-based environment.
Thanks in advance for your replies.
It's one path. This article uses QT to intercept requests, so you are basically implementing your own web server
I don't know about your requirements but you may have quite some work if you wanna do it by yourself (implementing Sessions, Authentication, Http methods, SSL, etc).
In my case, I deactivated the standard HTTPD server and used Padarn for a C# backend and I found it to be ok, but it's not free.
I didn't spend much time looking for C/C++ servers but I believe setting up a pre-made web-server is a good path path unless that article meets your requirements.
I'm looking for a library that work exactly like socket.io(node.js) but I need it in other platform, c++ or maybe python.
This is about server application for website. My app work with node.js but I need to change it for C++/python or something other.
socket.io is great because it choose technology automatically to connect with server - depend which browser/hardware you use.
Any ideas?
For Python, you could look into >> Websockets with python <<
Can I use Socket.IO with Django?
Django is a web-framework that uses Python language.
There is a Socket.IO implementation for python via TornadIO2, which is to be used with the Tornado async web server. I have used this when it was TornadIO 1.0
Go has one that I use, but its only compatible to Socket.IO 0.6.x: go-socket.io
And just look at the socket.io Wiki for other links:
https://github.com/learnboost/socket.io/wiki
The protocol definition for socket.io is available here
https://github.com/LearnBoost/socket.io-spec
I have been part of a couple of project where we decided to actually implement our own client for various reasons. It is not that hard especially since you only have to support on transport (xhr-polling is the easiest imho).
And also maybe a possibility to give back to the community....
I have a library/API that is completely built with C/C++ for over 10 years (under Linux). Now I want to export the API as a web service for other web projects use. I search for the web and narrow down to the following 3 chooses:
use SWIG to export the API to PHP or other script/web base language
use gSOAP to export the API as SOAP protocol
export the API as RESTful service (I can't find any exist framework, any suggestions?)
I want to compare them in terms of
stability
easy of use
performance
SWIG seems easy to use buy I am not sure the stability of it.
gSOAP seems very stable but a bit difficult to use and setup.
Any suggestion?
I personally used WSO2-WSF-CPP which is a C++ layer on top of AXIS2/2 to export legacy C++ code as web-service.
I tried back then gSOAP which worked quite well, but for stability and deployment reasons I choose WSO2, since AXIS2/C can be deployed easily as a module of the well know Apache2 HTTP server.
For the ease of use requirement I don't know if you plan to take WSDL file as a template to generate source code skeleton, but you can forget about this feature of the WSO2 package ... It seems to have been deprecated for a long time and the generated code is way too ugly to be maintained by hand.
Although doing a code generator yourself could be a good idea depending on the complexity and the amount of services you have. I recommend it! I did that and creating/building/generating services is quite straightforward now.
Another thing to notice about the WSO2 web services is that it's simple to build out of the box, and comes with stand-alone server to develop and test with. It was quite helpful (even if I am quite sure any decent web-service platform provides this kind of stuff like gSOAP does).