private static IEnumerable <TResult> Include <TResult>(
QueryContext queryContext,
IEnumerable <TResult> source,
INavigation navigation,
InMemoryDatabase.InMemoryTable targetTable,
Func <TResult, object> accessorLambda)
{
var inMemoryQueryContext = ((InMemoryQueryContext)queryContext);
return
(source
.Select(result =>
{
inMemoryQueryContext.QueryBuffer
.Include(
accessorLambda.Invoke(result),
navigation,
(primaryKey, relatedKeyFactory) =>
targetTable
.Select(vs => new ObjectArrayValueReader(vs))
.Where(valueReader => relatedKeyFactory(valueReader).Equals(primaryKey))
);
return result;
}));
}
private static IEnumerable <IValueReader> GetRelatedValueReaders(
InMemoryDatabase.InMemoryTable targetTable,
EntityKey primaryKey,
Func <IValueReader, EntityKey> relatedKeyFactory)
{
return(targetTable
.Select(vs => new ObjectArrayValueReader(vs))
.Where(valueReader => relatedKeyFactory(valueReader).Equals(primaryKey)));
}
private static IEnumerable <TEntity> EntityQuery <TEntity>(
QueryContext queryContext,
IEntityType entityType,
InMemoryDatabase.InMemoryTable inMemoryTable)
{
return(inMemoryTable
.Select(t => (TEntity)queryContext.QueryBuffer
.GetEntity(entityType, new ObjectArrayValueReader(t))));
}
private static IEnumerable <TEntity> EntityQuery <TEntity>(
QueryContext queryContext,
IEntityType entityType,
InMemoryDatabase.InMemoryTable inMemoryTable,
bool queryStateManager)
where TEntity : class
{
return(inMemoryTable
.Select(t => (TEntity)queryContext.QueryBuffer
.GetEntity(entityType, new ObjectArrayValueReader(t), queryStateManager)));
}
private static IEnumerable <IValueReader> ProjectionQuery(InMemoryDatabase.InMemoryTable inMemoryTable)
{
return(inMemoryTable.Select(t => new ObjectArrayValueReader(t)));
}
