I have a use case that requires offline access to google earth. I know that google earth enterprise offers a disconnected product, however we may not have access to that product and/or google earth enterprise is prohibitively expensive at $25K for a dev license.
I would prefer to use the google earth plugin since I am building an application and would like to use the JS api. Is it possible to host the google earth plugin on my own disconnected server? We would use google earth connected to a standalone offline WMS server for access to imagery.
said another way, can I host the plugin and corresponding javascript on my own server?
I do not know if i understand well your problem but i can explain you waht I'm currently working on.
Im my current application with google earth plugin js api, I'm able to start the plugin even if offline. But one requirement is to have cached data.
If you have cached data and if you start the plugin offline, then zooming to a level with higher resolution that the one you have in your cached data will have no effect (imagery will not be update to higher resolution)
but depending on what you really need, yes , you can start the plugin offline
This is not really answering your original question but if you are interested, just tell me :-)
I tried to cache Google Earth with a proxy server but I couldn't.
Furthermore I think the api is validated every time it loads against Google Servers and doesn't allow offline use
It's some monthes now since I have worked with this.
I'll try to explain with what i can remember :-)
in the html where i have my plug-in, i have removed:
"script type="text/javascript" src="https://www.google.com/jsapi">
but i have saved locally this jsapi.js file. I also saved locally loader_1-008.js
then, im my code (c++, Qt) I'm using evaluateJavaScript(Qstring source) twice
where source is the text read from my 2 .js files
These 2 evaluateJavaScript calls need to be done before loading my html (the one with the plugin)
in my QWebView
I can not remmeber much more but I hope this can start to help you
Related
I'm running Apex 19.2 on Oracle 18c and I would like to get some images URL to show them in the application. The images are stored in the database as blob (not static images).
For the moment what I did is creating an ORDS Restfull Service that connects to database and load the images. The images are then accessible via an URL that I insert in my pages
<img src="URL to my Restfull service module with the image identifier">
This works well but I find it quite complex and most importantly, it's very slow and doesn't cache the image. Whenever I load the page I have to wait for the image to load (even though it's very small : 50kb)
Does anyone have a solution for this please ? Is there any Apex out of the box solution like for static imaes ?
Thanks,
Cheers
There is no direct method to expose BLOBs to the end user as it would be kind of complicated to secure these files. I can suggest the following two methods:
Use the code just like you did it, but consider putting it in an application process. This way, you can use all your session variables directly. You will then be able to generate a link that does exactly what you want, or call the process from a button or branch. There is a nice tutorial here:
https://oracle-base.com/articles/misc/apex-tips-file-download-from-a-button-or-link
Using APEX_UTIL.GET_BLOB_FILE_SRC
This function only works out of a apex session and requires you to set up an application page with an item that holds a primary key to your table. I doubt that this is what you want.
Note that APEX_MAIL.GET_IMAGES_URL does not work for your use case - this only works for files in your shared components application files or workspace files.
I actually like your approach, because it may be more lightweight than 1). That the image gets loaded again every time probably does not depend on the method you are using. I guess it is more likely due to the headers you are sending out. Take a look at the cache-control headers on this page:
https://developer.mozilla.org/de/docs/Web/HTTP/Headers/Cache-Control
Maybe check out APEX_MAIL.GET_IMAGES_URL
It is supposed to do essentially what you need so perhaps you can use it.
I will be doing some pdf generation for my application. Currently, my plan is to create HTML using templates and convert them to PDF.
The pdf's aren't long. Maximum 3 pages. And approximately we will be making approx 100 docs in a day.
I was happy with the results I got from chrome --headless in my local machine. I called the cli command directly from my clojure code. So far so good. Looking at the number of wrappers available (Browserless, Chromeless, Puppeteer, ...) I'm not sure about the scalability factor in production.
Is it safe to use/call the chrome cli directly in production boxes?
What will I miss if I skip these wrappers?
My server side stack is Clojure/Compojure/Leiningen. Any insights/alternatives are appreciated.
I'm using Athena PDF for pdf generation in combination with Clojure:
https://github.com/arachnys/athenapdf
It has a REST interface. Since it runs in Docker its easy to scale.
Instead of detouring through html and chrome, I'd just use a pdf creating library such as clj-pdf. Here is a nice blog post about it.
p.s. If you dont mind running a third program to generate the pdf, I would have used emacs with org-mode (or heck, even writing it in elisp altogether) ;)
I was wondering about the best way to deliver private web service instances to lots of users, so the user would always be able to connect to their own offline version of a service, just like running a web service from visual studios while debugging. I was struggling with setting this up in VS2013 even with the many online tutorials, but I am not sure if its not working because it was never supposed to work this way.
I have provided this in-depth explanation of my issue as i am not sure i am going about this in the right way and would appreciate feedback:
Background:
I have a web service to interface with an engine. This deals with the front-end and builds a set of commands for how to make a CAD model. These commands are for controlling the 3rd party CAD software's API. Therefore the engine can be seen to have two main functions -
Build the CAD's API instructions, which can be saved for later
Execution, where it catches the instance of the CAD software
running on the same computer and it builds the model.
The second part is restricted for the general public. Only our in-house users should be able to use it. However, they want to have an otherwise identical front-end and user experience.
The problem is, if they connect to the same engine as the public, which exists on our main server, then the engine will be looking for an instance of the CAD package on the same machine as itself - i.e the server, as stressed in the emboldened point above. What should happen is the engine finds the CAD instance running on the machine that the controlling UI is based on and it uses that for its target. I have spoke to the CAD API support and they say they do not know how to do that.
And so we get to my solution of providing an offline stand alone of my web service on each of the employees computers. This means the front-end will check at the start of the session if a localhost connection is available. If not it will use the main address, which takes it to my server. Otherwise it uses the local engine which will look perform the default behavior of looking for a CAD package on the same machine as itself. Because its locally installed that is now the right machine and it will find the CAD instance of the user successfully.
Final points:
The engine cannot be accessed by the UI directly as i am using
Unity3D for the front-end and there is .Net compatibility issues.
I need a completely self contained version of the software in the
future anyway, so eventually i have to deal with having the engine
accessed locally
I ended up using IISExpress. I got the user to install this and then get them to call a batch file installer i made which sets up the config file and moves my web project to the correct directory.
When starting an online-radio, the problem for me is that I do not want to run a program all the time locally on my computer.
Rather I would like to write a web service, which automatically and randomly plays a mp3 from an online database. That way the online radio could be up 24/7 without much trouble.
Is there any framework you know of or is there already an open source web service for this?
More generally, how would you approach this project?
Thanks for any ideas and suggestions!
Dietmar
I have a requirement to build a flex mobile app (iOS/Android) which is capable of downloading data from the web (product animations and associated data).
It needs to handle additional product lines if I add any and cache the data offline (in SQlite I guess).
I think web services is probably the answer but is it possible to load an external library such as SWF or SWC using this method?
Any help is much appreciated as always!
I think web services is probably the answer but is it possible to load
an external library such as SWF or SWC using this method?
If you need to pass data to and from a Flex app then you can use RemoteObject (AMF), WebService (SOAP), or HTTPService (REST). My personal recommendation is to use RemoteObject/AMF whenever possible.
You can load another SWF at runtime using SWFLoader. I'm pretty sure that SWFLoader will not work on iOS as there are clauses in the iOS Developer agreement that you can have code that will interpret other code at runtime or something similar.