Class DatabaseClassValidationAttribute

Allows you to create class level validation, instead of individual field level, that runs when directly connected to the database only

Inheritance
object
Attribute
ValidationAttribute
DatabaseValidationAttribute
DatabaseClassValidationAttribute
Inherited Members
Namespace: LemonEdge.API.Attributes.Validation
Assembly: LemonEdge.API.dll
Syntax
[AttributeUsage(AttributeTargets.Class|AttributeTargets.Interface, Inherited = false, AllowMultiple = true)]
public class DatabaseClassValidationAttribute : DatabaseValidationAttribute
Remarks

You can mark this attribute against a class, referring to a custom validation like so:

public interface IMyClass { }

[DatabaseClassValidation(typeof(MyCustomValidation), nameof(MyCustomValidation.test))]
public class MyClass : IMyClass
{

}

public static class MyCustomValidation
{
    public static Task<ValidationResult> ValidateMyClass(IMyClass item, LemonEdge.Core.IEntityUpdater dbCon, LemonEdge.Entities.IReadOnlyCache cache, LemonEdge.API.Core.UserInfo user, ValidationContext validationContext)
    {
        //Custom checks here
        return Task.FromResult(ValidationResult.Success);
    }
}

Constructors

DatabaseClassValidationAttribute(Type, string)

Creates a new DatabaseClass validation attribute that specifies a static method on the specified class to use to validate this class

Declaration
public DatabaseClassValidationAttribute(Type validationClass, string classFunctionName)
Parameters
Type Name Description
Type validationClass

The class that holds the method used for validating this class
string classFunctionName

The static method name of signature static Task<TResult> IsValid(T value, IEntityUpdater dbCon, IReadOnlyCache cache, UserInfo user, ValidationContext validationContext)

Properties

TypeId

Have to override this if AllowMultiple is true

Declaration
public override object TypeId { get; }
Property Value
Type Description
object
Overrides

Methods

IsValid(object, IEntityUpdater, IReadOnlyCache, UserInfo, ValidationContext)

The validation method to return if the item, and changes, are valid or not

Declaration
protected override Task<ValidationResult> IsValid(object value, IEntityUpdater dbCon, IReadOnlyCache cache, UserInfo user, ValidationContext validationContext)
Parameters
Type Name Description
object value

The item to be validated
IEntityUpdater dbCon

A connection to the database to use for validation
IReadOnlyCache cache

A local cache of current items to speed validation
UserInfo user

The current logged in user who made the changes
ValidationContext validationContext

The validation context across all changes
Returns
Type Description
Task<ValidationResult>

A task holding the validation result
Overrides

Extension Methods

See Also