public static Expression <Func <TAzureEntity, bool> > Transfer(Expression <Func <TEntity, bool> > filter)
{
var oldParam = filter.Parameters.FirstOrDefault(p => p.Type == typeof(TEntity));
if (oldParam == null || filter.Parameters.Except(new[] { oldParam }).Any())
{
throw new InvalidOperationException("lambda is not in correct format");
}
var newParam = Expression.Parameter(typeof(TAzureEntity));
var result = new AzureTransferExpression <TAzureEntity, TEntity>(newParam, oldParam).Visit(filter.Body);
return(Expression.Lambda <Func <TAzureEntity, bool> >(result, newParam));
}
public static Expression <Func <TAzureEntity, bool> > ToAzureFilter <TAzureEntity, TEntity>(Expression <Func <TEntity, bool> > filter)
where TAzureEntity : TableServiceEntity
where TEntity : Entity
{
return(AzureTransferExpression <TAzureEntity, TEntity> .Transfer(filter));
}
