raven/server/AyaNova/DataList/DataListSqlSelectBuilder.cs

using System.Collections.Generic;
using System.Text;
using System.Linq;

namespace AyaNova.DataList
{
    internal class SqlSelectBuilderResult
    {
        internal Dictionary<string, int> map { get; set; }
        internal string Select { get; set; }
    }
    internal static class DataListSqlSelectBuilder
    {

        //Build the SELECT portion of a list query based on the ListView fields 
        internal static SqlSelectBuilderResult Build(List<AyaDataListFieldDefinition> objectFieldsList, List<string> listViewFieldList)
        {
            StringBuilder sb = new StringBuilder();
            sb.Append("SELECT ");

            //keep track of which custom fields columns were added already
            //this ensures that if there is more than one set of custom fields like from two different objects in the list
            //only unique ones will be returned by query           
            //map sql column name to ordinal name
            Dictionary<string, int> map = new Dictionary<string, int>();
            int nOrdinal = 0;

            var firstColumnAdded = false;
            foreach (string ColumnName in listViewFieldList)
            {
                AyaDataListFieldDefinition o = objectFieldsList.FirstOrDefault(z => z.FieldKey == ColumnName);
#if (DEBUG)
                //Developers little helper
                if (o == null)
                {
                    throw new System.ArgumentNullException($"## DEV ERROR in DataListSqlSelectBuilder.cs:Build() field {ColumnName} specified in datalist view was NOT found in the data list's ObjectFields list, a defined fieldkey name differs from the ListView field key name");
                }
#endif
                if (o != null)
                {//Ignore missing fields in production
                    if (o.IsCustomField)
                    { //if any are custom field then add custom fields column to query
                        var CustomFieldSqlColumnName = o.GetSqlValueColumnName();
                        //has it been added yet?
                        if (!map.ContainsKey(CustomFieldSqlColumnName))
                        { //nope
                            if (firstColumnAdded)
                                sb.Append(", ");
                            sb.Append(CustomFieldSqlColumnName);
                            firstColumnAdded = true;
                            map.Add(CustomFieldSqlColumnName, nOrdinal++);
                        }
                    }
                    else
                    {
                        var valueColumnName = o.GetSqlValueColumnName();
                        if (!map.ContainsKey(valueColumnName))
                        {
                            if (firstColumnAdded)
                                sb.Append(", ");
                            sb.Append(valueColumnName);
                            firstColumnAdded = true;
                            map.Add(valueColumnName, nOrdinal++);
                        }

                        //does it also have an ID column?
                        var idColumnName = o.SqlIdColumnName;
                        if (!string.IsNullOrWhiteSpace(idColumnName))
                        {
                            if (!map.ContainsKey(idColumnName))
                            {
                                if (firstColumnAdded)
                                    sb.Append(", ");
                                sb.Append(idColumnName);
                                firstColumnAdded = true;
                                map.Add(idColumnName, nOrdinal++);
                            }
                        }

                        //does it also have an openable AyaType column?
                        var ayaTypeColumnName = o.SqlAyTypeColumnName;
                        if (!string.IsNullOrWhiteSpace(ayaTypeColumnName))
                        {
                            if (!map.ContainsKey(ayaTypeColumnName))
                            {
                                if (firstColumnAdded)
                                    sb.Append(", ");
                                sb.Append(ayaTypeColumnName);
                                firstColumnAdded = true;
                                map.Add(ayaTypeColumnName, nOrdinal++);
                            }
                        }

                        //does it also have a Color column?
                        var ayaColorColumnName = o.SqlColorColumnName;
                        if (!string.IsNullOrWhiteSpace(ayaColorColumnName))
                        {
                            if (!map.ContainsKey(ayaColorColumnName))
                            {
                                if (firstColumnAdded)
                                    sb.Append(", ");
                                sb.Append(ayaColorColumnName);
                                firstColumnAdded = true;
                                map.Add(ayaColorColumnName, nOrdinal++);
                            }
                        }
                    }
                }
            }
            return new SqlSelectBuilderResult() { map = map, Select = sb.ToString() };
        }//eof



        //Build the SELECT portion of a list query but only to return rowid's
        internal static SqlSelectBuilderResult BuildForReportIdListOnly(List<AyaDataListFieldDefinition> objectFieldsList, List<string> listViewFieldList)
        {
            StringBuilder sb = new StringBuilder();
            sb.Append("SELECT ");
            //map sql column name to ordinal name
            Dictionary<string, int> map = new Dictionary<string, int>();
            int nOrdinal = 0;

            var firstColumnAdded = false;
            foreach (string ColumnName in listViewFieldList)
            {
                AyaDataListFieldDefinition o = objectFieldsList.FirstOrDefault(z => z.FieldKey == ColumnName);
#if (DEBUG)
                //Developers little helper
                if (o == null)
                {
                    throw new System.ArgumentNullException($"DEV ERROR in DataListSqlSelectBuilder.cs:BuildForReportIdListOnly() field {ColumnName} specified in template was NOT found in ObjectFields list");
                }
#endif
                if (o != null && o.IsRowId)//only return the rowid column
                {//Ignore missing fields in production
                    AddTheColumn(sb, map, ref nOrdinal, ref firstColumnAdded, o);
                }
            }


            //insert rowid if it wasn't specified already in the list view
            //this is legit as some datalists don't have a rowid visible to user e.g. PartInventoryOnHand
            if (map.Count == 0)
            {
                //find the rowid in the objectfields list and insert it since it wasn't in the view already
                var o = objectFieldsList.FirstOrDefault(z => z.IsRowId == true);
                if (o != null)
                {
                    //  if(!string.IsNullOrWhiteSpace(rowIdColumn.SqlIdColumnName)){
                    //      map.Add(rowIdColumn.SqlIdColumnName, nOrdinal++);
                    //  }else{
                    //      map.Add(rowIdColumn.GetSqlValueColumnName(), nOrdinal++);
                    //  }
                    AddTheColumn(sb, map, ref nOrdinal, ref firstColumnAdded, o);
                }

            }
            return new SqlSelectBuilderResult() { map = map, Select = sb.ToString() };
        }//eof

        private static void AddTheColumn(StringBuilder sb, Dictionary<string, int> map, ref int nOrdinal, ref bool firstColumnAdded, AyaDataListFieldDefinition o)
        {
            // var valueColumnName = o.GetSqlValueColumnName();
            // if (!map.ContainsKey(valueColumnName))
            // {
            //     if (firstColumnAdded)
            //         sb.Append(", ");
            //     sb.Append(valueColumnName);
            //     firstColumnAdded = true;
            //     map.Add(valueColumnName, nOrdinal++);
            // }

            // //does it also have an ID column?
            // var idColumnName = o.SqlIdColumnName;
            // if (!string.IsNullOrWhiteSpace(idColumnName))
            // {
            //     if (!map.ContainsKey(idColumnName))
            //     {
            //         if (firstColumnAdded)
            //             sb.Append(", ");
            //         sb.Append(idColumnName);
            //         firstColumnAdded = true;
            //         map.Add(idColumnName, nOrdinal++);
            //     }
            // }

            // var valueColumnName = o.GetSqlValueColumnName();
            // if (!map.ContainsKey(valueColumnName))
            // {
            //     if (firstColumnAdded)
            //         sb.Append(", ");
            //     sb.Append(valueColumnName);
            //     firstColumnAdded = true;
            //     map.Add(valueColumnName, nOrdinal++);
            // }

            //does it also have an ID column?
            var idColumnName = o.SqlIdColumnName;
            if (!string.IsNullOrWhiteSpace(idColumnName))
            {
               // if (!map.ContainsKey(idColumnName))
               // {
                    // if (firstColumnAdded)
                    //     sb.Append(", ");
                    sb.Append(idColumnName);
                   // firstColumnAdded = true;
                    map.Add(idColumnName, 0);
               // }
            }
        }
    }//eoc
}//ens