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tk
2024-11-13 18:18:28 +08:00
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Providers/FreeSql.Provider.MsAccess/Curd/MsAccessUpdate.cs Normal file
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using FreeSql.Internal;
using FreeSql.Internal.Model;
using System;
using System.Collections.Generic;
using System.Data;
using System.Linq;
using System.Text;
using System.Threading;
using System.Threading.Tasks;
namespace FreeSql.MsAccess.Curd
{
class MsAccessUpdate<T1> : Internal.CommonProvider.UpdateProvider<T1>
{
public MsAccessUpdate(IFreeSql orm, CommonUtils commonUtils, CommonExpression commonExpression, object dywhere)
: base(orm, commonUtils, commonExpression, dywhere)
{
_batchAutoTransaction = false;
}
public override IUpdate<T1> BatchOptions(int rowsLimit, int parameterLimit, bool autoTransaction = true) => throw new NotImplementedException(CoreStrings.S_Access_InsertOnlyOneAtTime);
//蛋疼的 access 更新只能一条一条执行，不支持 case .. when .. then .. end，也不支持事务
public override int ExecuteAffrows() => base.SplitExecuteAffrows(1, 1000);
protected override List<TReturn> ExecuteUpdated<TReturn>(IEnumerable<ColumnInfo> columns) => base.SplitExecuteUpdated<TReturn>(1, 1000, columns);
protected override List<TReturn> RawExecuteUpdated<TReturn>(IEnumerable<ColumnInfo> columns) => throw new NotImplementedException($"FreeSql.Provider.MsAccess {CoreStrings.S_Not_Implemented_Feature}");
protected override void ToSqlCase(StringBuilder caseWhen, ColumnInfo[] primarys)
{
if (primarys.Length == 1)
{
var pk = primarys.First();
caseWhen.Append(_commonUtils.RereadColumn(pk, _commonUtils.QuoteSqlName(pk.Attribute.Name)));
return;
}
caseWhen.Append("(");
var pkidx = 0;
foreach (var pk in primarys)
{
if (pkidx > 0) caseWhen.Append(" + '+' + ");
caseWhen.Append(MsAccessUtils.GetCastSql(_commonUtils.RereadColumn(pk, _commonUtils.QuoteSqlName(pk.Attribute.Name)), typeof(string)));
++pkidx;
}
caseWhen.Append(")");
}
protected override void ToSqlWhen(StringBuilder sb, ColumnInfo[] primarys, object d)
{
if (primarys.Length == 1)
{
sb.Append(_commonUtils.FormatSql("{0}", primarys[0].GetDbValue(d)));
return;
}
var pkidx = 0;
foreach (var pk in primarys)
{
if (pkidx > 0) sb.Append(" + '+' + ");
sb.Append(MsAccessUtils.GetCastSql(_commonUtils.FormatSql("{0}", pk.GetDbValue(d)), typeof(string)));
++pkidx;
}
}
#if net40
#else
public override Task<int> ExecuteAffrowsAsync(CancellationToken cancellationToken = default) => base.SplitExecuteAffrowsAsync(1, 1000, cancellationToken);
protected override Task<List<TReturn>> ExecuteUpdatedAsync<TReturn>(IEnumerable<ColumnInfo> columns, CancellationToken cancellationToken = default) => base.SplitExecuteUpdatedAsync<TReturn>(1, 1000, columns, cancellationToken);
protected override Task<List<TReturn>> RawExecuteUpdatedAsync<TReturn>(IEnumerable<ColumnInfo> columns, CancellationToken cancellationToken = default) => throw new NotImplementedException($"FreeSql.Provider.MsAccess {CoreStrings.S_Not_Implemented_Feature}");
#endif
}
}