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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,81 @@ | ||
| using System.Collections.Generic; | ||
| using System.Data; | ||
| using System.Data.SqlClient; | ||
| using System.Linq; | ||
| using DataBoss.Data; | ||
|
|
||
| namespace DataBoss | ||
| { | ||
| public class DataBossBulkCopy | ||
| { | ||
| const string TempTableName = "#$"; | ||
|
|
||
| public readonly SqlConnection Connection; | ||
| public readonly SqlTransaction Transaction; | ||
| public int? CommandTimeout; | ||
|
|
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| public DataBossBulkCopy(SqlConnection connection) : this(connection, null) { } | ||
|
|
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| public DataBossBulkCopy(SqlConnection connection, SqlTransaction transaction) { | ||
| this.Connection = connection; | ||
| this.Transaction = transaction; | ||
| } | ||
|
|
||
| public void Insert(string destinationTable, IDataReader toInsert) { | ||
| using (var bulkCopy = NewBulkCopy(destinationTable)) { | ||
| for (var i = 0; i != toInsert.FieldCount; ++i) { | ||
| var n = toInsert.GetName(i); | ||
| bulkCopy.ColumnMappings.Add(n, n); | ||
| } | ||
| bulkCopy.WriteToServer(toInsert); | ||
| } | ||
| } | ||
|
|
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| public void Insert<T>(string destinationTable, IEnumerable<T> rows) => Insert(destinationTable, SequenceDataReader.Create(rows, x => x.MapAll())); | ||
|
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| public ICollection<int> InsertAndGetIdentities<T>(string destinationTable, IEnumerable<T> rows) { | ||
| var n = 0; | ||
| var toInsert = SequenceDataReader.Create(rows, x => { | ||
| x.Map("$", _ => ++n); | ||
| x.MapAll(); | ||
| }); | ||
|
|
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| var scripter = new DataBossScripter(); | ||
| Connection.ExecuteNonQuery(Transaction, $@" | ||
| {scripter.ScriptTable(TempTableName, toInsert)} | ||
| create clustered index [#$_$] on {TempTableName}([{toInsert.GetName(0)}]) | ||
| "); | ||
|
|
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| using (var bulkCopy = NewBulkCopy(TempTableName)) | ||
| bulkCopy.WriteToServer(toInsert); | ||
|
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| var columns = string.Join(",", Enumerable.Range(1, toInsert.FieldCount - 1).Select(toInsert.GetName)); | ||
| using (var cmd = Connection.CreateCommand($@" | ||
| insert {destinationTable} with(tablock)({columns}) | ||
| output inserted.$identity as {nameof(IdRow.Id)} | ||
| select {columns} | ||
| from {TempTableName} | ||
| order by [$] | ||
| drop table {TempTableName} | ||
| ")) | ||
| { | ||
| if(CommandTimeout.HasValue) | ||
| cmd.CommandTimeout = CommandTimeout.Value; | ||
| cmd.Transaction = Transaction; | ||
| using (var reader = ObjectReader.For(cmd.ExecuteReader(CommandBehavior.SingleResult | CommandBehavior.SequentialAccess))) { | ||
| var ids = reader.Read<IdRow>().Select(x => x.Id).ToList(); | ||
| ids.Sort(); | ||
| return ids; | ||
| } | ||
| } | ||
| } | ||
|
|
||
| SqlBulkCopy NewBulkCopy(string destinationTable) { | ||
| var bulkCopy = new SqlBulkCopy(Connection, SqlBulkCopyOptions.TableLock, Transaction) { DestinationTableName = destinationTable }; | ||
| if(CommandTimeout.HasValue) | ||
| bulkCopy.BulkCopyTimeout = CommandTimeout.Value; | ||
| return bulkCopy; | ||
| } | ||
| } | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,3 +1,3 @@ | ||
| using System.Reflection; | ||
|
|
||
| [assembly: AssemblyVersion("0.0.0.26")] | ||
| [assembly: AssemblyVersion("0.0.0.27")] |
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