I am working on a .net core project and using cassandra as the data store. I need to ignore a column to store in database, i have seen in EF and in Mongo db as IgnoreBson attribute, but i am not able to find solution for cassandra with .net driver using linq. I have seen the solution for java driver but not for .net driver. I am following this link.
Thanks in advance.
You can define how your entities map to your columns using the MappingConfiguration. In case you need to include only specific columns use the option ExplicitColumns:
MappingConfiguration.Global.Define(
new Map<User>()
.TableName("users")
.PartitionKey(u => u.UserId)
.ExplicitColumns()
.Column(u => u.UserId, cm => cm.WithName("id")));
In case you are using attribute-based mappings, you can set ExplicitColumns on the TableAttribute:
[Table("users", ExplicitColumns = true)]
public class User
{
// ...
}
If you want to use most of the properties in your entity, while just ignoring few of them, you can also use IgnoreAttribute:
[Table("users")]
public class User
{
// ...
[Ignore]
public string IgnoreMe { get; set; }
}
Very simple in EF Core.. You have two options, data annotations or fluent configuration.
Fluent configuration lends itself to “better practises” so i’d lean towards that if possible.. Heres some examples of both methods: https://docs.microsoft.com/en-us/ef/core/modeling/included-properties