roapi | Create full-fledged APIs | SQL Database library

 by   roapi Rust Version: 0.11.3 License: Apache-2.0

kandi X-RAY | roapi Summary

kandi X-RAY | roapi Summary

roapi is a Rust library typically used in Database, SQL Database, Amazon S3 applications. roapi has no bugs, it has no vulnerabilities, it has a Permissive License and it has medium support. You can download it from GitHub.

ROAPI automatically spins up read-only APIs for static datasets without requiring you to write a single line of code. It builds on top of Apache Arrow and Datafusion. The core of its design can be boiled down to the following:.

            kandi-support Support

              roapi has a medium active ecosystem.
              It has 2825 star(s) with 144 fork(s). There are 41 watchers for this library.
              There were 3 major release(s) in the last 6 months.
              There are 34 open issues and 91 have been closed. On average issues are closed in 133 days. There are 1 open pull requests and 0 closed requests.
              It has a neutral sentiment in the developer community.
              The latest version of roapi is 0.11.3

            kandi-Quality Quality

              roapi has 0 bugs and 0 code smells.

            kandi-Security Security

              roapi has no vulnerabilities reported, and its dependent libraries have no vulnerabilities reported.
              roapi code analysis shows 0 unresolved vulnerabilities.
              There are 0 security hotspots that need review.

            kandi-License License

              roapi is licensed under the Apache-2.0 License. This license is Permissive.
              Permissive licenses have the least restrictions, and you can use them in most projects.

            kandi-Reuse Reuse

              roapi releases are available to install and integrate.
              Installation instructions, examples and code snippets are available.

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            roapi Key Features

            No Key Features are available at this moment for roapi.

            roapi Examples and Code Snippets

            No Code Snippets are available at this moment for roapi.

            Community Discussions


            What DLLs and libs do I need so I can use `timeBeginPeriod` or other parts of `timeapi.h`?
            Asked 2021-Apr-19 at 19:32

            Whereas many Windows API functions exist in Windowsapp.lib or in API sets (see this answer to How to declare and link to RoInitialize,RoUninitialize,RoGetActivationFactory and HSTRING Functions in Mingw Gcc), many functions are not listed as included in WindowsApp.lib or in the extension APIs.

            For example, timeBeginPeriod, which I want to use to set the resolution for Sleep.

            It is part of Timeapi, which is not mentioned anywhere in the list of functions available in WindowsApp.lib or extension APIs. The documentation also does not mention any API set.

            • Do I link to winmm.lib and winmm.dll?
            • Do I include Windows.h or timeapi.h?

            How would I know? RoInitialize does not mention a DLL or an API set, but it is available in several.



            Answered 2021-Apr-19 at 19:32

            I figured I'd look into this myself. I wrote a little test program and used the VS compiler to test.

            1. Via Start, I launched a VS developer prompt (among other ways of doing that like in the answer to Run cl.exe from cmd ).
            2. I wrote up some simple programs to test the various cases.
            The answer

            My experimentation showed that the answer to this question is not necessarily straightforward:

            • Do I link to winmm.lib and winmm.dll?

            You may link/consume winmm, but windowsapp.lib is also sufficient, even though it is not documented that the time API functions are part of it.

            • Do I include Windows.h or timeapi.h?

            At least in my experimentation, Windows.h was actually required to use timeBeginPeriod. timeapi.h was not sufficient or necessary. It is unclear to me why that is the case.

            Here's how I got this answer:

            Compiling a simple program

            Just to prove things will compile:



            Consume Windows Runtime APIs from pure C
            Asked 2020-Dec-21 at 19:21

            As far as I understand, Windows Runtime is the new infrastructure through which Windows exposes its APIs. My question is simple: how can I use that from pure C code? I don't mind writing more code, I just want to understand how things link together.

            Let's take for example the basic example Microsoft gives: Specifically, "Modify a C++ Win32 project to use Windows Runtime APIs", there's an example that shows how to display a toast notification from an application. How do I translate that code to make use of it from a plain .c file?

            I found some header files in C:\Program Files (x86)\Windows Kits\10\Include\10.0.19041.0\winrt, for example windows.ui.notifications.h I think might be useful, but I don't know how I am supposed to use the things in there. On MSDN, no article talks about pure C, only various managed languages and projections for C++.

            Please, this is more of an academic question. I have successfully used COM from C in the past and was pretty okay with it, but for this, I can't find any mention or article about it online.

            Thank you.

            Edit Now I have some code that executes successfully (resulting HRESULTs are S_OK) but no toast is shown. Any idea how to debug this? What could be failing after all? I haven't implemented the COM activator, since I have a similar PowerShell script that works with basically the same thing I have written in C. I am stuck and lost, maybe someone can help.



            Answered 2020-Dec-21 at 19:21

            I figured it out, eventually. The issue is, you have to wait a bit before terminating the process so that the COM threads have a chance to actually do the work and deliver the notification. The code posted above fully works, I will later post a revised version with only the absolutely necessary stuff. The way I solved it was by stripping out everything until the example app ( had the same code as mine, and the only difference being the message queue which kept the example app alive after "sending" the request for the toast.

            Also, if you are fine with the notification being able to only trigger a protocol, and for it not to contain any buttons, you can skip creating a shortcut in Start and just use the appid of another app. If you supply an appid that does not belong to any installed application, the toast won't have an icon, by the app name will be whatever you supplied. This is great for people developing extensions/add-ons to current applications who do not really need to clutter the Start menu with unnecessary shortcuts. Buttons require COM activation because unfortunately, but at least we have this.

            And yes, you do not need an app manifest either. Now the question is what is the correct way to wait before terminating? I mean, of course Sleep(200); is fine, but I am curious about the correct solution.

            To get the app IDs for installed apps, type Get-StartApps in PowerShell.

            Edit: Here is working code which hopefully frees memory etc.



            Trying to access UWP's EmailMessage class from C++ results in "REGDB_E_CLASSNOTREG Class not registered" error
            Asked 2020-Feb-11 at 23:14

            My goal is to use EmailMessage class to let users of my desktop app interact with the Windows Mail app on Windows 10. As a test I'm trying the following from a stock C++ console app in Visual Studio 2017:



            Answered 2020-Feb-11 at 23:14

            you got REGDB_E_CLASSNOTREG Class not registered because "Windows.ApplicationModel.Email" really not registered. ( look under HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\WindowsRuntime\ActivatableClassId key - no Windows.ApplicationModel.Email subkey here )

            you have 2 errors in code, instead self string "Windows.ApplicationModel.Email" - you need use RuntimeClass_* strings defined in some winrt header file. you need use


            which is declared in

            then RoGetActivationFactory can not return IEmailMessage direct. it can return IActivationFactory interface (You can get an IActivationFactory pointer by calling the RoGetActivationFactory function. ) and then you need call IActivationFactory::ActivateInstance for get pointer to IInspectable and finally QueryInterface on it for get IEmailMessage

            so better (if you need single instance of IEmailMessage) use RoActivateInstance here. code can be next


            Community Discussions, Code Snippets contain sources that include Stack Exchange Network


            No vulnerabilities reported

            Install roapi

            Check out Github release page for pre-built binaries for each platform. Pre-built docker images are also available at
            Spin up APIs for test_data/uk_cities_with_headers.csv and test_data/spacex_launches.json:.


            For any new features, suggestions and bugs create an issue on GitHub. If you have any questions check and ask questions on community page Stack Overflow .
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          • PyPI

            pip install roapi

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          • CLI

            gh repo clone roapi/roapi

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