Class PersistableAttribute

Used to customize the database related code generated for the tagged data model interface.

By default, a public static string GetKey(param object[] args) method is included in generated entity classes so that a database key for a specific entity can be easialy obtained. This method simply generates a string by calling ToString() on all of arguments or using "NULL" for null values which each of these being separated by a single colon and then prepending the entire thing with the entity type. The generated code will look something like this:

public class PersonEntity : Entity<Person>
{
    public static string GetKey(params object[] args)
    {
        if (args.Length == 0)
        {
            throw new ArgumentException("At least one argument is expected.");
        }
    var key = "entity-type::";

    for (int i=0; i $lt; args.Length; i++)
    {
        var arg = args[i];

        if (i > 0)
        {
            key += ":";
        }

        key += arg != null ? arg.ToString() : "NULL";
    }

    return key;
}

...

}

Inheritance

object

Attribute

PersistableAttribute

Namespace: Neon.ModelGen

Assembly: Neon.Common.dll

Syntax

[AttributeUsage(AttributeTargets.Interface)]
public class PersistableAttribute : Attribute

Properties

GetKeyArgs

This property combined with GetKeyString is used to generate a public static string GetKey(...) method. See the class remarks for more information.

Declaration

public string GetKeyArgs { get; set; }

Property Value

Type	Description
string

GetKeyString

This property combined with GetKeyArgs is used to generate a public static string GetKey(...) method. See the class remarks for more information.

Declaration

public string GetKeyString { get; set; }

Property Value

Type	Description
string