private static EntityDescriptor GetDescriptor(
DbContext context,
IApplyQueryableConfiguration <TReadModel> queryableConfiguration)
{
return(Descriptors.GetOrAdd(context.Database.ProviderName, s =>
new EntityDescriptor(context, queryableConfiguration)));
}
internal IncludeExpression(
IApplyQueryableConfiguration <TReadModel> source,
Expression <Func <TReadModel, TProperty> > navigationPropertyPath)
{
_source = source;
_navigationPropertyPath = navigationPropertyPath;
}
internal IncludeString(
IApplyQueryableConfiguration <TReadModel> source,
string navigationPropertyPath)
{
_source = source;
_navigationPropertyPath = navigationPropertyPath;
}
public EntityDescriptor(
DbContext context,
IApplyQueryableConfiguration <TReadModel> queryableConfiguration)
{
var entityType = context.Model.FindEntityType(typeof(TReadModel));
_key = GetKeyProperty(entityType);
_version = GetVersionProperty(entityType);
_queryByIdTracking = CompileQueryById(queryableConfiguration, true);
_queryByIdNoTracking = CompileQueryById(queryableConfiguration, false);
}
Include <TReadModel, TProperty>(
this IApplyQueryableConfiguration <TReadModel> source,
Expression <Func <TReadModel, TProperty> > navigationPropertyPath)
where TReadModel : class, IReadModel, new()
{
if (navigationPropertyPath == null)
{
throw new ArgumentNullException(nameof(navigationPropertyPath));
}
return(new IncludeExpression <TReadModel, TProperty>(
source,
navigationPropertyPath));
}
public EntityFrameworkReadModelStore(
IBulkOperationConfiguration bulkOperationConfiguration,
ILog log,
IReadModelFactory <TReadModel> readModelFactory,
IApplyQueryableConfiguration <TReadModel> queryableConfiguration,
IDbContextProvider <TDbContext> contextProvider,
ITransientFaultHandler <IOptimisticConcurrencyRetryStrategy> transientFaultHandler)
: base(log)
{
_readModelFactory = readModelFactory;
_queryableConfiguration = queryableConfiguration;
_contextProvider = contextProvider;
_transientFaultHandler = transientFaultHandler;
_deletionBatchSize = bulkOperationConfiguration.DeletionBatchSize;
}
private Func <DbContext, CancellationToken, string, Task <TReadModel> > CompileQueryById(
IApplyQueryableConfiguration <TReadModel> queryableConfiguration,
bool tracking)
{
return(tracking
? EF.CompileAsyncQuery((DbContext dbContext, CancellationToken t, string id) =>
queryableConfiguration.Apply(dbContext
.Set <TReadModel>()
.AsTracking())
.SingleOrDefault(e => EF.Property <string>(e, Key) == id))
: EF.CompileAsyncQuery((DbContext dbContext, CancellationToken t, string id) =>
queryableConfiguration.Apply(
dbContext
.Set <TReadModel>()
.AsNoTracking())
.SingleOrDefault(e => EF.Property <string>(e, Key) == id)));
}
Include <TReadModel>(
this IApplyQueryableConfiguration <TReadModel> source,
string navigationPropertyPath)
where TReadModel : class, IReadModel, new()
{
if (navigationPropertyPath == null)
{
throw new ArgumentNullException(nameof(navigationPropertyPath));
}
if (string.IsNullOrWhiteSpace(navigationPropertyPath))
{
throw new ArgumentException("Must not be null or empty", nameof(navigationPropertyPath));
}
return(new IncludeString <TReadModel>(
source,
navigationPropertyPath));
}