private Expression GetAssignExpression(Type propertyType, FilterOperator filterOperator, Expression left, ConstantExpression right)
{
var effectiveType = propertyType.GetEffectiveType();
if ((effectiveType == typeof(string)) || (effectiveType == typeof(Guid)))
{
return(ExpressionExtensions.GetAssignExpressionString(filterOperator, left, right, propertyType));
}
if (effectiveType.IsNumericType())
{
return(ExpressionExtensions.GetAssignExpressionNumeric(filterOperator, left, right, propertyType));
}
if (effectiveType == typeof(bool))
{
return(ExpressionExtensions.GetAssignExpressionBoolean(filterOperator, left, right, propertyType));
}
if (effectiveType == typeof(DateTime))
{
return(ExpressionExtensions.GetAssignExpressionDateTime(filterOperator, left, right, propertyType));
}
if (effectiveType.IsEnum())
{
return(ExpressionExtensions.GetAssignExpressionEnum(filterOperator, left, right, propertyType));
}
return(null);
}