How do I modify an existing OpenAccess MappingConfiguration?
I created a module that uses OpenAccess to create a couple of tables. At the time I wrote the module, I wasn't able to get openaccess to create the tables automatically. They were fairly simple so I created the tables and added the columns manually from within SQL Server Management Studio. Now I need to modify the table. So I add the additonal column to my MappingConfiguration for the table like so:
myTableMapping.HasProperty(v => v.LastModifiedDate).HasColumnType("datetime");Server Error in '/NLGSitefinityWebApp' Application.--------------------------------------------------------------------------------Invalid column name 'last_modified_date'. Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code. Exception Details: Telerik.OpenAccess.RT.sql.SQLException: Invalid column name 'last_modified_date'.Source Error: Line 23: VideoOnDemandGrid.ItemDataBound += new GridItemEventHandler(OnVideoOnDemandGrid_ItemDataBound);Line 24: VideoOnDemandGrid.DataSource = context.VideosOnDemand;Line 25: VideoOnDemandGrid.DataBind();Line 26: Line 27: Source File: C:\Program Files (x86)\Telerik\Sitefinity 4.3\Projects\NLG Sitefinity Site\Modules\VideoOnDemand\Admin\VideoOnDemandAdminView.ascx.cs Line: 25 Stack Trace: [SQLException: Invalid column name 'last_modified_date'.] Telerik.OpenAccess.RT.Adonet2Generic.Impl.PreparedStatementImp.executeQuery() +681 OpenAccessRuntime.Relational.conn.PooledPreparedStatement.executeQuery() +566 OpenAccessRuntime.Relational.fetch.FetchResultImp.Execute() +93[DataStoreException: Error executing query: Telerik.OpenAccess.RT.sql.SQLException: Invalid column name 'last_modified_date'. at Telerik.OpenAccess.RT.Adonet2Generic.Impl.PreparedStatementImp.executeQuery() at OpenAccessRuntime.Relational.conn.PooledPreparedStatement.executeQuery() at OpenAccessRuntime.Relational.fetch.FetchResultImp.Execute()SQL:SELECT a.[id] AS COL1, a.[can_be_purchased] AS COL2, a.[can_be_rented] AS COL3, a.[date_posted] AS COL4, a.[description] AS COL5, a.[expiration_hours] AS COL6, a.[last_modified_date] AS COL7, a.[nme] AS COL8, a.[preview_url] AS COL9, a.[published] AS COL10, a.[purchase_price] AS COL11, a.[qualifies_for_ceu] AS COL12, a.[rental_price] AS COL13, a.[running_time_seconds] AS COL14, a.[secure_url] AS COL15, a.[segment_count] AS COL16, a.[segment_number] AS COL17, a.[sku] AS COL18, a.[test_master_content_xml] AS COL19, a.[thumbnail] AS COL20, a.[title] AS COL21 FROM [sf_nlg_video_on_demand] a ORDER BY a.[id] Telerik.OpenAccess.RT.sql.SQLException: Invalid column name 'last_modified_date'. at Telerik.OpenAccess.RT.Adonet2Generic.Impl.PreparedStatementImp.executeQuery() at OpenAccessRuntime.Relational.conn.PooledPreparedStatement.executeQuery() at OpenAccessRuntime.Relational.fetch.FetchResultImp.Execute()] Telerik.OpenAccess.RT.ExceptionWrapper.Throw() +13 OpenAccessRuntime.storagemanager.logging.LoggingStorageManager.fetchNextQueryResult(ApplicationContext context, RunningQuery runningQuery, Int32 skipAmount) +692 OpenAccessRuntime.DataObjects.ForwardQueryResult.Initialize(Int32 indexParam) +273 OpenAccessRuntime.DataObjects.ForwardQueryResult.get_Item(Int32 indexParam) +92 Telerik.OpenAccess.RT.ListEnumerator.setCurrent(Int32 _pos) +58 Telerik.OpenAccess.RT.ListEnumerator.Move(Int32 relative) +97 Telerik.Web.UI.GridResolveEnumerable.GetCollectionItemType(Boolean noItemsInEnumerator, Type& collectionItemType, Object& collectionFirstObject) +595 Telerik.Web.UI.GridResolveEnumerable.ParseProperties() +200 Telerik.Web.UI.GridResolveEnumerable.Initialize() +16 Telerik.Web.UI.GridResolveEnumerable.EnsureInitialized() +29 Telerik.Web.UI.GridEnumerableFromDataView..ctor(GridTableView owner, IEnumerable enumerable, Boolean CaseSensitive, Boolean autoGenerateColumns, GridColumnCollection presentColumns, String[] additionalField, Boolean retrieveAllFields, Boolean enableSplitHeaderText) +265 Telerik.Web.UI.GridDataSourceHelper.CreateGridEnumerable(GridTableView owner, IEnumerable enumerable, Boolean caseSensitive, Boolean autoGenerateColumns, GridColumnCollection presentColumns, String[] additionalField, Boolean retrieveAllFields, Boolean enableSplitHeaderText) +225 Telerik.Web.UI.GridTableView.get_ResolvedDataSource() +411 Telerik.Web.UI.GridTableView.CreateChildControls(IEnumerable dataSource, Boolean useDataSource) +46 System.Web.UI.WebControls.CompositeDataBoundControl.PerformDataBinding(IEnumerable data) +94 System.Web.UI.WebControls.DataBoundControl.OnDataSourceViewSelectCallback(IEnumerable data) +182 Telerik.Web.UI.GridTableView.PerformSelect() +206 Telerik.Web.UI.GridTableView.DataBind() +432 SitefinityWebApp.Modules.VideoOnDemand.Admin.VideoOnDemandAdminView.Page_Load(Object sender, EventArgs e) in C:\Program Files (x86)\Telerik\Sitefinity 4.3\Projects\NLG Sitefinity Site\Modules\VideoOnDemand\Admin\VideoOnDemandAdminView.ascx.cs:25 System.Web.Util.CalliHelper.EventArgFunctionCaller(IntPtr fp, Object o, Object t, EventArgs e) +25 System.Web.UI.Control.LoadRecursive() +71 System.Web.UI.Control.LoadRecursive() +190 System.Web.UI.Control.LoadRecursive() +190 System.Web.UI.Control.LoadRecursive() +190 System.Web.UI.Control.LoadRecursive() +190 System.Web.UI.Control.LoadRecursive() +190 System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +3064 --------------------------------------------------------------------------------Version Information: Microsoft .NET Framework Version:4.0.30319; ASP.NET Version:4.0.30319.237var schemaHandler = VideoOnDemandContext.GetSchemaHandler();string script = null;if (schemaHandler.DatabaseExists()) script = schemaHandler.CreateUpdateDDLScript(null);else schemaHandler.CreateDatabase(); script = schemaHandler.CreateDDLScript();if (!string.IsNullOrEmpty(script)) schemaHandler.ExecuteDDLScript(script);Hi Steve,
I'm not sure how you defined your mappings but generally if you have a property of type DateTime in your model class defining its mapping is defined like this:
myMapping.HasProperty(p => p.LastModified).IsNullable();
(no need to specify HasColumnType("datetime")). Creating the table by hand and them adding the mapping is not recommended as OpenAccess will try to name the columns in its own way and there might occur problems.
Hi Lubomir,
The docs aren't very specific on when HasColumnType should be specified and the examples aren't all that consistant in its use so I figured it couldn't hurt.
<EDIT>: I just realized that my original post was a bit unclear. The issue isn't with the mapping of the datatype--it doesn't matter what datatype I'm trying to map. It's that the mapping changes don't result in the table schema being updated so the column added to the OpenAccess mapping doesn't result in the column being added to the table. </EDIT>
Of course you're right, creating the tables by hand isn't the recommended way. But as I indicated in my original post, I'm unable to edit the mapping once it's created. So, if I create a mapping with say 6 columns and later need to a column, I'm unable to do so without the error listed in my original post. The only workaround I could find was to create the column manually. OpenAccess' column naming convention is pretty easy to determine; caps are prepended with an underscore replaced by lowercase. So mySpecalColumnName becomes my_special_column_name.
Anyway, back to the original question: How do I modify an existing mapping so changes to the mapping automatically modify the table schema?
Thanks--Steve
Hi Steve,
Changing the mapping should get reflected immediately to the table when you try to perform any actions on the model that is mapped. I am not sure but it looks like there is some other problem with your database and mapping definitions. It would help us a lot if you could send us the database and the source code so that we could investigate the problem more closely.
All the best,