94 lines
3.7 KiB
C#
94 lines
3.7 KiB
C#
using System.Collections.Generic;
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using Newtonsoft.Json.Linq;
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using AyaNova.Models;
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using System.Threading.Tasks;
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using Microsoft.EntityFrameworkCore;
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using Microsoft.Extensions.Logging;
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namespace AyaNova.PickList
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{
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internal static class PickListFetcher
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{
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internal static async Task<List<NameIdActiveItem>> GetResponseAsync(IAyaPickList PickList, string autoCompleteQuery,
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string tagSpecificQuery, bool includeInactive, long[] preIds, string variant, AyContext ct, ILogger log)
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{
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//Sort out effective Template
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string Template = null;
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//Attempt to fetch custom template
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var t = await ct.PickListTemplate.FirstOrDefaultAsync(z => z.Id == ((long)PickList.DefaultListAType));
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if (t == null)
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{
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Template = PickList.DefaultTemplate;
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}
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else
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{
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Template = t.Template;
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}
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//parse the template
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var jTemplate = JArray.Parse(Template);
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//Get the field key names in a list from the template
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List<string> TemplateColumnNames = PickList.GetFieldListFromTemplate(jTemplate);
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//BUILD THE QUERY
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var q = PickListSqlBuilder.Build(PickList, TemplateColumnNames, autoCompleteQuery, tagSpecificQuery, includeInactive, preIds, variant);
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//If want to log all queries
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//log.LogInformation(q);
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//RETURN OBJECTS
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var ret = new List<NameIdActiveItem>();
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//QUERY THE DB
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using (var command = ct.Database.GetDbConnection().CreateCommand())
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{
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await ct.Database.OpenConnectionAsync();
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//GET DATA RETURN ROWS
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command.CommandText = q;
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try
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{
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using (var dr = await command.ExecuteReaderAsync())
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{
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while (dr.Read())
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{
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//query is always in the same order:
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//plId, plActive, plName
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ret.Add(new NameIdActiveItem
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{
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Id = dr.GetInt64(0),
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Active = dr.GetBoolean(1),
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Name = dr.GetString(2)
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});
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}
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}
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}
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catch (Npgsql.PostgresException e)
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{
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//log out the exception and the query
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//This may be called internally in *Biz classes who don't have a log of their own
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if (log == null)
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log = AyaNova.Util.ApplicationLogging.CreateLogger("PickListFetcher");
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log.LogError("PickList query failed unexpectedly. Query was:");
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log.LogError(q);
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log.LogError(e, "DB Exception");
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throw new System.Exception("PickListFetcher - Query failed see log");
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}
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catch (System.Exception e)
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{
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//ensure any other type of exception gets surfaced properly
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//log out the exception and the query
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log.LogError("PickListFetcher unexpected failure. Query was:");
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log.LogError(q);
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log.LogError(e, "Exception");
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throw new System.Exception("PickListFetcher - unexpected failure see log");
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}
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}
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return ret;
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}
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}//eoc
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}//eons |