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How are global query filters applied in EF Core?
EF Core applies such filters automatically to any LINQ queries involving those Entity Types. EF Core also applies them to Entity Types, referenced indirectly through use of Include or navigation property. Some common applications of this feature are: Soft delete – An Entity Type defines an IsDeleted property.
Is it possible to define multiple global query filters?
It is currently not possible to define multiple query filters on the same entity – only the last one will be applied. However, you can define a single filter with multiple conditions using the logical AND operator ( && in C# ). You can also use navigations in defining global query filters.
What are global query filters in LINQ core?
Global Query Filters. Global query filters are LINQ query predicates (a boolean expression typically passed to the LINQ Where query operator) applied to Entity Types in the metadata model (usually in OnModelCreating).
What does the fast query language ( FQL ) do?
Introduction to FQL and query language subexpressions and expressions in SharePoint The FAST Query Language (FQL) is a powerful query language that enables developers to perform exact searches and to narrow the scope of your search to values that belong to a specific managed property or a full-text index.
Can a global query filter lead to infinite loops?
If specified incorrectly, cycles could lead to infinite loops during query translation. Using required navigation to access entity which has global query filter defined may lead to unexpected results. Required navigation expects the related entity to always be present.
What are the limitations of global query filters?
Global query filters have the following limitations: Filters cannot contain references to navigation properties. Filters can only be defined for the root Entity Type of an inheritance hierarchy.
How to overwrite a filter in query object?
The filter that is set by the SETFILTER method will overwrite any filter that is applied to a column or filter row on the same field by the ColumnFilter Property. You can call the SETRANGE method method from AL code to set a filter on a field that is exposed through a column or filter row.
How to set filter on column in query object?
A filter row is like a data item filter except a filter on a filter row can be overwritten by the SETFILTER and SETRANGE methods from AL code. See Filtering on columns and filter rows in query object. You can call the SETFILTER method method from AL code to set a filter on a field that is exposed through a column or filter row.
Which is an example of a filter in Query Designer?
For example, if the data item filter applies a filter on a field to include values greater than 10 (>10) and a column filter applies a filter on the same field to include values less than fifty (<50), then the resultant filter includes values that are greater than 10 and less than fifty (10< value <50).
How to avoid circular references with EF Core and?
The question doesn’t mention it, but you actually have two circular issues here: circular project references (which I surmise is the issue you’re asking about) and circular dependency graphs (which I suspect you may not have noticed yet). From the question, I assume your project structure is as follows:
How are Query predicates used in EF Core?
A query predicate is a boolean expression typically passed to the LINQ Where query operator. EF Core applies such filters automatically to any LINQ queries involving those Entity Types. EF Core also applies them to Entity Types, referenced indirectly through use of Include or navigation property. Some common applications of this feature are:
Are there cycles in the global query filter?
Currently EF Core does not detect cycles in global query filter definitions, so you should be careful when defining them. If specified incorrectly, cycles could lead to infinite loops during query translation.
How to keep values in a filtered query?
Keep values in the filtered query that are different from all the values returned by the filtering query. Keep values in the filtered query that are greater than/greater than or equal to any of the values in the filtering query.