We are working on a project that uses EF5.0 to connect to an Oracle 11g R2 database. We are using Oracle's own EF provider.
Now we would like to convert EF 5.0's DbGeography types to Oracle Spatial. This is not supported by all EF providers.
Is it supported by Oracle's own EF provider?
I cannot find any documentation on it here: Oracle EF Provider
And when trying to find the answer on Google, I can only find websites related to Devart's dotConnect EF provider, or related to SQL Server.
P.S.: We are extending the code generation routines of the provider heavily, and we have found that Oracle's own EF provider is much much simpler to extend than the one of Devart, so that's the reason we're not switching to Devart. So please, don't answer with 'use Devart's dotConnect'.
Currently ODP.NET does not support EF spatials. Please take a look at these links:
https://community.oracle.com/thread/2562821
https://apex.oracle.com/pls/apex/f?p=18357:39:101895119491249::NO::P39_ID:27261
Related
does any tool exist that can simplify generation of the new APP if the DB already exists? I can create JDL file for new app manually base on existing DB - but I prefer to automate the process. This DB is part of old Spring Roo app.
Thank you.
The spring Roo 1.x version provides the "Database Reverse Engineering" functionality. This add-on allows you to create an application tier of JPA 2.0 entities based on the tables in your database. DBRE will also incrementally maintain your application tier if you add or remove tables and columns.
After generate the entities, you could execute the necessary web mvc commands to generate the complete application.
However, remember that the Spring Roo 1.x is not beeing maintained, because uses old technologies.
See more about the DBRE process here:
http://docs.spring.io/spring-roo/reference/html/base-dbre.html
Hope it helps,
There's a JHipster module that is being developed for this purpose: https://github.com/bastienmichaux/generator-jhipster-db-helper
It is probably not ready yet but could be a good start.
What's the difference between these two assemblies and when should I use each? I find that there are class name collisions between them so I imagine that I should only use one.
Example
Microsoft.WindowsAzure.Storage has Microsoft.WindowsAzure.Storage.Table.CloudTableClient
Microsoft.WindowsAzure.StorageClient has Microsoft.WindowsAzure.StorageClient.CloudTableClient
This seems very confusing. I can't imagine that Microsoft intends these to both be used in the same project.
Microsoft.WindowsAzure.Storage is version 2.0 of storage client library while Microsoft.WindowsAzure.StorageClient is the older version. There have been many changes in version 2.0 of the library (some of them are breaking). If you're starting new, I would actually recommend using 2.0 of the library as I found it more intuitive and easy to use than the older version. If you have an application which makes use of 1.7 version of the library, before you decide to upgrade, I would actually recommend reading the following blog posts by Windows Azure Storage Team:
http://blogs.msdn.com/b/windowsazurestorage/archive/2012/10/29/introducing-windows-azure-storage-client-library-2-0-for-net-and-windows-runtime.aspx
http://blogs.msdn.com/b/windowsazurestorage/archive/2012/10/29/windows-azure-storage-client-library-2-0-breaking-changes-amp-migration-guide.aspx
http://blogs.msdn.com/b/windowsazurestorage/archive/2012/11/06/windows-azure-storage-client-library-2-0-tables-deep-dive.aspx
However please note that there're still some components that your application might be using which has a dependency on storage client library 1.7. Windows Azure Diagnostics is one of them. So for some time you will need to use both versions. Good thing is that you can use both versions simultaneously in your project.
Hope this helps.
EDIT:
I also wrote a few blog posts about migrating code from storage client library 1.7 to 2.0 where I covered some basic scenarios. You can read those posts here:
Migrating blob storage code: http://gauravmantri.com/2012/11/28/storage-client-library-2-0-migrating-blob-storage-code/
Migrating queue code: http://gauravmantri.com/2012/11/24/storage-client-library-2-0-migrating-queue-storage-code/
Migrating table storage code: http://gauravmantri.com/2012/11/17/storage-client-library-2-0-migrating-table-storage-code/
When I set up a connection for Subsonic 3.0.0.4 to connect to an Oledb sql provider using the T4 Templates I get the following error: Keyword not supported 'provider' Can Subsonic access a database using OleDb? If so. How?
Which dbms do you want to use?
Since SubSonic 3 uses System.Data.Common for accessing data, it should be possible to use it with every dbms that supports ADO.net (I belive there is a OleDbProvider for ado).
But if you use a DBMS that is not supported by subsonic you have write your own DataProvider and an OleDb.ttinclude template file.
The beste starting point is to look at an existing provider:
https://github.com/subsonic/SubSonic-3.0/tree/master/SubSonic.Core/DataProviders/MySQL
https://github.com/subsonic/SubSonic-3.0-Templates/tree/master/TemplateProviders
Creating your own Provider shouldn't be to hard at all. I would use a Copy&Paste approach from an existing provider and modify everything that causes some errors.
I would use the standard SQL to LINQ Entity spaces but I have to connect to a database for a client through their application server's specific OLEDB provider. Apparently it's doing extra work after the standard OLEDB SQL commands are sent to the server. So LINQ as far as I understand is out. I built my own CRUD classes, but it's a pain doing it this way. I just want a tool that can build the standard classed so I don't have to create the layer myself.
It's MS SQL Server 2005 on the other end.
Does Subsonic work with Advantage Database server and if so are there any TT files to generate the necessary code
From the docs:
Subsonic 2.2 Currently supports 5 main database engines:
SQL Server (2000 through 2008)
MySQL (5.0+) with special support for InnoDB
Oracle - although we've had reports of some issues with Foreign Keys and Stored Procedures
SQL CE (Compact Edition)
SQLite
SubSonic 3.0 supports and has templates for:
SQL Server (2000-2008)
MySQL (5.0 +)
SQLite
Oracle support is currently in development - you can get the latest version of the templates from github. Please post details of any issues or questions to the SubSonic google group.
So in short unfortunately the answer is no.
I was wondering--what part of Subsonic 3 needs to be modified to support a different database under a Simple Repository scenario? I haven't found any documentation on this point. Subsonic 3 seems to be all about the T4 templates but when I check out the Subsonic project sources I don't see any T4 templates in there...so where/how do I add support for another database?
Thanks,
Alex
no part of SubSonic needs to be modified for SimpleRepo - just change your connection string and be sure to change the provider (part of the connection string) as well. So, the default connection might be:
connectionString="server=localhost;database=northwind;user id=bob;password=*****" provider="System.Data.SqlClient"
Change that to be the connection string you want, and the provider to your DB provider. MySQL would be something like "MySql.Data.MySqlClient" and SQLite would "System.Data.SQLite" (I think).
SubSonic will do the rest.