public EntityUniqueConstraint(PropertyProfile uniqueProperty)
{
if (uniqueProperty == null)
{
throw new ArgumentNullException(nameof(uniqueProperty));
}
UniqueProperties = new List <PropertyProfile>()
{
uniqueProperty
};
}
/// <summary>
/// Will the property value getter execute dynamic invoke or not.
/// </summary>
/// <returns>Returns True if it will use dynamic invoke, otherwise returns False.</returns>
public static bool IsDynamicallyInvoked(this PropertyProfile profile)
{
if (profile.PropertyExpression.Body is UnaryExpression)
{
return(true);
}
switch (profile.DbColumnType)
{
case NpgsqlDbType.Bigint:
case NpgsqlDbType.Integer:
case NpgsqlDbType.Real:
case NpgsqlDbType.Double:
case NpgsqlDbType.Numeric:
case NpgsqlDbType.Boolean:
case NpgsqlDbType.Smallint:
return(false);
}
return(true);
}
/// <summary> Calculates property values of item </summary>
/// <param name="profile">information about which property it is needed to get value</param>
/// <param name="item">item with values</param>
/// <typeparam name="TEntity">Type of entity</typeparam>
/// <returns>
/// Returns string representation of the value.
/// For nullable value returns "null" string.
/// For those cases where it is impossible to calculate property value without boxing, returns null
/// </returns>
public static string GetPropertyValueAsString <TEntity>(this PropertyProfile profile, TEntity item)
where TEntity : class
{
if (profile == null)
{
throw new ArgumentNullException(nameof(profile));
}
var propertyName = "";
if (profile.PropertyExpression.Body is MemberExpression memberExpression)
{
propertyName = memberExpression.Member.Name;
}
else if (profile.PropertyExpression.Body is ParameterExpression parameterExpression)
{
propertyName = parameterExpression.Name;
}
else if (profile.PropertyExpression.Body is UnaryExpression unaryExpression &&
unaryExpression.Operand is MemberExpression operand)
{
propertyName = operand.Member.Name;
}
private void MapProperties()
{
var annotationProperties = EntityType.GetProperties();
foreach (var propertyInfo in annotationProperties)
{
var propertyAttributes = propertyInfo.GetCustomAttributes(true);
var isNotMapped = false;
var isKey = false;
var isPartOfUniqueConstraint = false;
var isAutoGenerated = false;
var hasUpdateAfterInsert = false;
var hasUpdateAfterUpdate = false;
var columnName = "";
NpgsqlDbType?columnDbType = null;
foreach (var attr in propertyAttributes)
{
if (attr is ColumnAttribute columnAttribute)
{
columnName = columnAttribute.Name;
}
else if (attr is KeyAttribute keyAttribute)
{
isKey = true;
var typeId = keyAttribute.TypeId;
}
else if (attr is DataTypeAttribute dataTypeAttribute)
{
columnDbType = dataTypeAttribute.DataType.ToNpgsql();
}
else if (attr is NotMappedAttribute notMappedAttribute)
{
isNotMapped = true;
}
else if (attr is AutoGeneratedAttribute)
{
isAutoGenerated = true;
}
else if (attr is PartOfUniqueConstraintAttribute)
{
isPartOfUniqueConstraint = true;
}
else if (attr is UpdateAfterInsertAttribute)
{
hasUpdateAfterInsert = true;
}
else if (attr is UpdateAfterUpdateAttribute)
{
hasUpdateAfterUpdate = true;
}
}
if (isNotMapped)
{
continue;
}
if (string.IsNullOrWhiteSpace(columnName))
{
columnName = propertyInfo.Name.ToSnakeCase();
}
if (!columnDbType.HasValue)
{
columnDbType = propertyInfo.PropertyType.ToNpgsql();
}
var parameter = Expression.Parameter(EntityType, "entity");
var property = Expression.Property(parameter, propertyInfo);
var funcType = typeof(Func <,>).MakeGenericType(EntityType, propertyInfo.PropertyType);
var lambda = Expression.Lambda(funcType, property, parameter);
var propertyProfile = new PropertyProfile(columnName, lambda);
propertyProfile.HasColumnType(columnDbType.Value, propertyInfo.PropertyType);
if (isPartOfUniqueConstraint)
{
propertyProfile.ThatIsPartOfUniqueConstraint();
}
this.Properties.Add(propertyInfo.Name, propertyProfile);
if (isKey)
{
propertyProfile.ThatIsPrivateKey();
}
if (isAutoGenerated)
{
propertyProfile.ThatIsAutoGenerated();
}
if (hasUpdateAfterInsert)
{
propertyProfile.MustBeUpdatedAfterInsert();
}
if (hasUpdateAfterUpdate)
{
propertyProfile.MustBeUpdatedAfterUpdate();
}
}
}
