Creating HTML5 applications in SAP cloud platform - sapui5

I am new to SAP CP. I have built a webpage which has html, css and js files. I want to deploy the same in SAP CP and then do the backend (js) and bind to the hana database.
A few doubts regarding the same:
Can I deploy the same as HTML5 apps in sapui5 or I need to package it
as a war and deploy to Java apps?
How can I Bind a database to the same?
Also please note that I have not selected any template from sapui5 its an custom project the whole idea is to run a htnl5 web app in sap CP.
Any guidance will be great.

There is no need to use a war and deploy it as a Java app here as this is pure HTML5 app.
With HTML5, you would usually consume database content using REST API (OData for example) that you have exposed and not via direct SQL like you would do in Java with JDBC.
Therefore you won't bind a database to a HTML5 app, but a REST API endpoint that will provide the database service you expect to read/write etc from.

Related

How to use an SAP ABAP RFC in SAPUI5 without using NetWeaver Gateway?

There is an SAP ABAP standard table that I'm trying to access in SAPUI5.
I have created an RFC. How do I use this RFC in SAPUI5 to get the data there without using NetWeaver Gateway?
You can use a rest service or Web Service on the SAP system and consume the URL in your SAPUI5 application. You can create a SICF service and developer a handler for the service. In the handler you can fetch the content from the table and return the content.
Thanks and Regards,
Veera
I agree with Veera's answer and think that this is the best way of doing it without the Gateway when your application is deployed on the ABAP system (i.e. in the BSP repository). For completeness sake, I will also describe an alternative way of doing it if you are interested in exposing the application on the HANA Cloud Platform (HCP).
ABAP RFCs can be consumed through the HANA Cloud Connector (HCC) by HCP applications. So, if you would want to put your application in the HCP, then an idea would be to expose the RFC through the HCC, consume it e.g. in a Java application and the expose it to a UI5 app through this Java app (e.g. with a Servlet or a JAX-RS service). You can find an example of such a scenario in this repository and here you can find the SAP documentation about this.
Another HCP example is SFlight Sample Application.
Open source python and nodejs rfc connectors are also available, if RFC connection required.

How to integrate SAPUI5 apps developed on ABAP repository in HANA Cloud Platform

The scenario is to use already developed SAPUI5 applications on ABAP Gateway as portal widgets in sites developed through SAP HANA Cloud Platform,portal service.
I know we can add the ABAP backend gateway services using HANA Cloud connector and destination in HCP cockpit.
How to do we deal with the SAPUI5 applications.
a) Do we need to export them from the ABAP repository and import them into HCP web ide?
b) Can we directly deploy the same application on HCP as well and access it on the site?
In above both cases, what about the service calls made from within the app? wouldn't the urls be changed once the app is moved/imported to HCP [assuming app only makes call to relative urls.]
Any information/Documentation on this would be really helpful.
to both a) and b) my answer is Yes. With some reservation for a) as actually I just don't know of another method to deploy existing SAPUI5 apps from backend to HCP.
In my case the scenario was the following:
First, we installed HCP connector, linked it to existing S-users, then I defined a destination in my HCP account. Be aware that you have to add some specific attributes to the destination to make it available in WebIDE.
My task was to extend some existing SAPUI5 applications, so I imported them into WebIDE and it appeared that they worked just fine when running via WebIDE without changing a single line of code or configuration. Apparently they can be deployed to HCP as a standalone apps or as a part of Fiori launchpad.

Can I design web or HTML pages(with Javascript & css support) using IBM Bluemix?

We are new to IBM Bluemix & Cloud based PAAS.
We are learning about application development & deployment in IBM Bluemix.
Our Target technology stack is Java, PHP, Python, Javascript, CSS (Style sheet for web pages).
Can I design web or HTML pages(with Javascript & css support) using IBM Bluemix ?
If this option is present, then I can develop web pages faster and get my applications immediately to prospective customers.
All the technologies you have mentioned can be supported in Bluemix by using various buildpacks. For the HTML based project (Javascript + css) you can use the Liberty Runtime. Just go to the Catalog and create an application using the Liberty Runtime. This will give you a skeleton of HTML application you can build on.

Standalone ServiceStack service for Web & Native Mobile App

Our architecture consists of several backend (non-ServiceStack) services and applications that send data to our system via ServiceStack service hosted in asp.net - this is currently a standalone ServiceProject project containing our required Services/Repository/DTOs following the structure of all the provided ServiceStack samples.
With our backend complete we're now designing our two front-end requirements consisting of a web application and native mobile application. For the web application I'd really like to continue leveraging ServiceStack by using the Razor plugin to create the application's layout/views from our existing DTOs, for our mobile app we will only rely on the ServiceStack service for authentication and data - as it is native it's layout/views will come from it's own SDK.
Can I leave my standalone ServiceStack service as is and:
Create a separate web application project that authenticates
against our existing standalone ServiceStack service and uses the
Razor view plugin?
Have our native mobile app clients
authenticate against the same standalone ServiceStack service?
Most of the examples ie. RazorRockstars I've seen have the services embedded in the web project so I'm not sure if this distributed type of setup is supported. Any guidance or feedback on this is greatly appreciated!
It is very much possible. You can consume the web service from both, web and native mobile application. I worked in a ASP.NET MVC web application which used to make call to Web API service hosted at different server. The Web API service was shared among multiple applications. We were consuming it by making AJAX calls from client.
Something similar to your scenario is done at below link but they are using cloud to host service:
http://www.codeproject.com/Articles/529109/Mobile-2fWebplusClient-2cplusWebplusAPIplusandplus
If you have opportunity to make a web app for mobile instead of native app, then in a single solution both mobile and desktop app can be created. The exemplary solution can be found here: http://nopcommerce.codeplex.com/
Thanks and free free to discuss more in case of further questions.

Google Web Toolkit on a standalone server

Our team is planning on making a thick client into a web based UI. We are researching the various options and GWT is something that we are researching. I have a question if GWT can be deployed by itself (meaning, does it have a built-in web server that can be deployed as a solution?) Appreciate thoughts about it.
Thanks in advance.
If your application is completely client-side and does not need to communicate with a server (for data purposes), then you can use any web server. GWT compiles to static JavaScript files, so you can use apache or any other web server to serve up the static files.
If there is a server-side component to your application then you'll need a servlet container.
No built-in web server really except for the development platform which include one... but it's not meant for production.