Is it possible to have different DB connection for API, when installed as a bundle in Symfony?
I know it is possible to specifiy the Entity Manager in queries, if you are querying diff DB.
But how to do this in API Platform ?
I idn't relly try anything yet. But couldn't find anything in docs.
It would be great if you can point me in the right dirrection.
Related
I started to use graphQl with react relay. And I followed some tutorials and I can able to get and post with the help of mutations and queries. Everything works fine but my question here is,
Where qraphql is saving the data and fetching that for us
for example: If I get data from database mean's I can go through into particular DB/ TABLE. Likewise, i want to know where graphql is storing the data.
i searched many sites, They are telling how to use qraphql but I cant able to find an answer to my question. I need clarification in this area. Can someone help me out with this.
GraphQL is a query language for your API, and a server-side runtime for executing queries by using a type system you define for your data. GraphQL isn't tied to any specific database or storage engine and is instead backed by your existing code and data.
You can connect any database using GraphQL.
As I understand you are trying the mutation and queries with some hosted engines.
Please go through this reference and set up the GraphQL engine on your side.
GraphQL, unlike a database level query languages like SQL, is an application level query language. It's up to programmer to create necessary logic - in most server implementations realized by using resolver functions - to make a domain described by GraphQL Schema a reality. This includes any form of persistence.
The GraphQL is using localStorage provided by your browser by default if there is no other storage are provided.
We have an existing system using Oracle DB and several applications working on/off it using JDBC/ODBC etc. For an additional interface for CRUD operations I am looking at a web based front-end. I dont see a whole of ideas in this areas, maybe because the ORacle DB is mostly enterprise and probably means the enterprises building their own custom apps?
Using the Oracle REST API services, build a front end using Angular/JS. This eliminates any need for oracle specific server side logic and almost ORacle independent. Are there any frameworks / opensource tools that fall in this area?
Please let me know any comments / feedback on this approach.
As far as I know there aren't really any options like this specifically for Oracle databases. You might be better off going with a desktop solution, of which there are many.
There is a web UI called "H2 Console" which claims to work with any JDBC connection. I have used this with MySql before with great success but have not tried it with Oracle.
The H2 Console application lets you access a database using a browser. This can be a H2 database, or another database that supports the JDBC API.
If you want something more 'user friendly' then as far as I know there are no existing solutions for this. You will probably have to build your own or educate your users on SQL.
I would like to use Meteor (Node.JS) to develop an application that will be used by 3,000+ concurrent users on a large size database.
I have looked at the nice examples and the idea to push changed data to the clients is very nice and very useful, but before I start the development I want to be sure how it works behind the scenes to be sure that when I have the application running with all these users it work fast with standard hardware.
I also require this to use Oracle as a database, but not sure that it is supported and if not, what are the requirements from an Oracle package to enable this facility.
I think that the server is having an active on going non-blocking query on the OPLOG table in mongodb and that is how we get the callback for all the changes in the database. Is that correct ? if so, is there a similar way to do it in Oracle ?
Thanks Roni.
I also require this to use Oracle as a database, but not sure that it is supported and if not, what are the requirements from an Oracle package to enable this facility.
Nope, meteor is currently mongo-only as they have implemented an in-browser library called minimongo. My guess is this project will never support oracle, but who knows. There is no mention of oracle support on the meteor project roadmap
Just happened to come across this question while searching at google.
However, if there are no native solutions. We can always figure out a way for a medium language to issue publishing.
Example Case:
Python will be used for synchronising data between Mongodb and Oracle (24/7 operation using cx_Oracle and MongoDB drivers from python)
Meteor Server will keep watch on what to publish
Meteor clients/browsers that subscribed to the channel that will be updated with oracle data.
I learned to love how LINQ enables set operations on collections. I'm not saying that I plan to shun traditional RDMBS, because I do need it for reporting. There are NoSQL alternatives out there, but they seem to all need to fire up a separate service.
What I looking for is something local where a DLL can create a database and perform CRUD on it. As mentioned, I'm not going to report out of this, just internal data store. The main application that will be using it is in C#.
I'm hoping that someone can give me a lead. If not, if there is anyone willing, we can start a open-source project for it. I'm not interested in commercial products.
Thanks,
You can run RavenDB in embedded mode inside your .NET application - no need for external services or anything.
And RavenDB supports Linq....
Hi i am developing a metro style application where i will be connecting to web services and get the data from the web service and i will be binding it to the UI.
But my requirement is in my application i need to create tables and also provide relation between the tables and dump the data in to that local database and use that data in calling the other methods present in my service application (calling one more method in services by passing something as an input to that).
Can you please explain me the following :-
What is Database which is supported for metro style apps?
How can i create a database and create tables and dump the the data which i got as the response from my service application?
I am new to Metro style application development please help me out .
Thanks in Advance.
First of all WinRT has very poor db support. Most of this kind of things are done by web services, OData etc
BUT I`m almost 100% sure that you can use SQLite. On codeplex there are connectors from Win8 Metro app to SQLite DB so check this topic. I also saw somewhere on MS page that SQLite is support in some way. Check it
What Fixus said is correct. Personally , since my app doesnt have a large amount of data to store locally (it goes against the Metro guidelines to store large amounts of data) I serialize the objects instead to local storage. When needed, and if internet is available, the services will be called and the local data updated.
If you choose to use SQLlite make sure you use the real deal and not a third party db, as the DB library must be approved by Microsoft if you want to get the app accepted to the windows store. I'm not even sure that SQLite is yet approved, but by the looks of it they will be.
Tim Heuer always writes great articles on the subject, this one might help you
Let me know if you need help with serializing in WinRT, if you need it.
Best of luck!
We recommend using SQLite database with LinqConnect - Devart's LINQ to SQL compatible solution which supports SQLite engine (provided by http://code.google.com/p/csharp-sqlite/). You can employ LINQ and ADO.NET interfaces with our product. Starting from the 4.0 version, LinqConnect supports Windows Metro applications: http://blogs.devart.com/dotconnect/linqconnect-for-metro-quick-start-guide.html.
If you're building some application that has to keep working without any network connection, and needs to synchronize at some point in time, it is necessary to keep a local database.
You can read the following article, which has some basic guidelines and samples.
http://blogs.msdn.com/b/win8devsupport/archive/2013/01/10/using-database-in-windows-store-apps-i.aspx