Class DatabasePropertyValidation

Allows you to write a formula against properties that are automatically evaluated to validate changes

Inheritance

System.Object

System.Attribute

System.ComponentModel.DataAnnotations.ValidationAttribute

DatabaseValidation

DatabasePropertyValidation

Inherited Members

DatabaseValidation.RequiresValidationContext

DatabaseValidation.IsValid(Object, ValidationContext)

System.ComponentModel.DataAnnotations.ValidationAttribute.FormatErrorMessage(System.String)

System.ComponentModel.DataAnnotations.ValidationAttribute.GetValidationResult(System.Object, System.ComponentModel.DataAnnotations.ValidationContext)

System.ComponentModel.DataAnnotations.ValidationAttribute.IsValid(System.Object)

System.ComponentModel.DataAnnotations.ValidationAttribute.Validate(System.Object, System.ComponentModel.DataAnnotations.ValidationContext)

System.ComponentModel.DataAnnotations.ValidationAttribute.Validate(System.Object, System.String)

System.ComponentModel.DataAnnotations.ValidationAttribute.ErrorMessage

System.ComponentModel.DataAnnotations.ValidationAttribute.ErrorMessageResourceName

System.ComponentModel.DataAnnotations.ValidationAttribute.ErrorMessageResourceType

System.ComponentModel.DataAnnotations.ValidationAttribute.ErrorMessageString

System.Attribute.Equals(System.Object)

System.Attribute.GetCustomAttribute(System.Reflection.Assembly, System.Type)

System.Attribute.GetCustomAttribute(System.Reflection.Assembly, System.Type, System.Boolean)

System.Attribute.GetCustomAttribute(System.Reflection.MemberInfo, System.Type)

System.Attribute.GetCustomAttribute(System.Reflection.MemberInfo, System.Type, System.Boolean)

System.Attribute.GetCustomAttribute(System.Reflection.Module, System.Type)

System.Attribute.GetCustomAttribute(System.Reflection.Module, System.Type, System.Boolean)

System.Attribute.GetCustomAttribute(System.Reflection.ParameterInfo, System.Type)

System.Attribute.GetCustomAttribute(System.Reflection.ParameterInfo, System.Type, System.Boolean)

System.Attribute.GetCustomAttributes(System.Reflection.Assembly)

System.Attribute.GetCustomAttributes(System.Reflection.Assembly, System.Boolean)

System.Attribute.GetCustomAttributes(System.Reflection.Assembly, System.Type)

System.Attribute.GetCustomAttributes(System.Reflection.Assembly, System.Type, System.Boolean)

System.Attribute.GetCustomAttributes(System.Reflection.MemberInfo)

System.Attribute.GetCustomAttributes(System.Reflection.MemberInfo, System.Boolean)

System.Attribute.GetCustomAttributes(System.Reflection.MemberInfo, System.Type)

System.Attribute.GetCustomAttributes(System.Reflection.MemberInfo, System.Type, System.Boolean)

System.Attribute.GetCustomAttributes(System.Reflection.Module)

System.Attribute.GetCustomAttributes(System.Reflection.Module, System.Boolean)

System.Attribute.GetCustomAttributes(System.Reflection.Module, System.Type)

System.Attribute.GetCustomAttributes(System.Reflection.Module, System.Type, System.Boolean)

System.Attribute.GetCustomAttributes(System.Reflection.ParameterInfo)

System.Attribute.GetCustomAttributes(System.Reflection.ParameterInfo, System.Boolean)

System.Attribute.GetCustomAttributes(System.Reflection.ParameterInfo, System.Type)

System.Attribute.GetCustomAttributes(System.Reflection.ParameterInfo, System.Type, System.Boolean)

System.Attribute.GetHashCode()

System.Attribute.IsDefaultAttribute()

System.Attribute.IsDefined(System.Reflection.Assembly, System.Type)

System.Attribute.IsDefined(System.Reflection.Assembly, System.Type, System.Boolean)

System.Attribute.IsDefined(System.Reflection.MemberInfo, System.Type)

System.Attribute.IsDefined(System.Reflection.MemberInfo, System.Type, System.Boolean)

System.Attribute.IsDefined(System.Reflection.Module, System.Type)

System.Attribute.IsDefined(System.Reflection.Module, System.Type, System.Boolean)

System.Attribute.IsDefined(System.Reflection.ParameterInfo, System.Type)

System.Attribute.IsDefined(System.Reflection.ParameterInfo, System.Type, System.Boolean)

System.Attribute.Match(System.Object)

System.Object.Equals(System.Object, System.Object)

System.Object.GetType()

System.Object.MemberwiseClone()

System.Object.ReferenceEquals(System.Object, System.Object)

System.Object.ToString()

Namespace: LemonEdge.API.Attributes.Validation

Assembly: API.dll

Syntax

[AttributeUsage(AttributeTargets.Property, Inherited = false, AllowMultiple = true)]
public class DatabasePropertyValidation : DatabaseValidation

Remarks

For instance you can validate properties using custom scripts like so:

public interface MyItem
{
    bool ValidateX { get; set; }

    [DatabasePropertyValidation(
        //checkOnLamda. Only validate this property if this returns true 
        "MyItem." + nameof(ValidateX),
        //validOnLamda. If returns false then the validation fails and the following message returns why
        //This script uses LemonEdge.Core.FormulaFunctionsWithContext. So you can access the Cache, User, and Updater. 
        //You can also write any c# script, not just a single line formula
        "var itemVaue = MyItem.AmountX; return itemValue > 100;",
        //message. Reason for validation failure
        "AmountX must be greater than 100 if ValidateX is true.")]
    Int16 AmountX { get; set; }
}

Constructors

DatabasePropertyValidation(String, String, String)

Validates this property whenever the item is changed

Declaration

public DatabasePropertyValidation(string checkOnLamda, string validOnLamda, string message)

Parameters

Type	Name	Description
System.String	checkOnLamda	Only runs the calidOnLamda check if this statement is true, otherwise it returns valid
System.String	validOnLamda	valid if this check is true, false otherwise and returns message
System.String	message	Returns message if validOnLamda is false

Properties

TypeId

Have to override this if AllowMultiple is true

Declaration

public override object TypeId { get; }

Property Value

Type	Description
System.Object

Overrides

System.Attribute.TypeId

Methods

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

Declaration

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

Parameters

Type	Name	Description
System.Object	value
IEntityUpdater	dbCon
IReadOnlyCache	cache
UserInfo	user
System.ComponentModel.DataAnnotations.ValidationContext	validationContext

Returns

Type	Description
System.Threading.Tasks.Task<System.ComponentModel.DataAnnotations.ValidationResult>

Overrides

DatabaseValidation.IsValid(Object, IEntityUpdater, IReadOnlyCache, UserInfo, ValidationContext)

Extension Methods

MiscExtensions.SetIfNotEqual<T, P>(T, Expression<Func<T, P>>, P)

ReflectionExtensions.ClearEventInvocations(Object, String)

StringExtensions.ToCSVFormatString(Object, Type)

SQLExtensions.ToSQLValue(Object, Boolean)

See Also

DatabaseValidation