DocSpace-buildtools/common/ASC.Core.Common/EF/IQueryableExtensions.cs

namespace ASC.Core.Common.EF;

public static class IQueryableExtensions
{
    public static string ToSql<TEntity>(this IQueryable<TEntity> query) where TEntity : class
    {
        var enumerator = query.Provider.Execute<IEnumerable<TEntity>>(query.Expression).GetEnumerator();
        var relationalCommandCache = enumerator.Private("_relationalCommandCache");
        var selectExpression = relationalCommandCache.Private<SelectExpression>("_selectExpression");
        var factory = relationalCommandCache.Private<IQuerySqlGeneratorFactory>("_querySqlGeneratorFactory");

        var sqlGenerator = factory.Create();
        var command = sqlGenerator.GetCommand(selectExpression);

        var sql = command.CommandText;

        return sql;
    }

    private static object Private(this object obj, string privateField)
    {
        return obj?.GetType().GetField(privateField, BindingFlags.Instance | BindingFlags.NonPublic)?.GetValue(obj);
    }

    private static T Private<T>(this object obj, string privateField)
    {
        return (T)obj?.GetType().GetField(privateField, BindingFlags.Instance | BindingFlags.NonPublic)?.GetValue(obj);
    }
}