public void Merge <T>(DbContext context, Type type, IList <T> entities, TableInfo tableInfo, OperationType operationType,
Action <decimal> progress) where T : class
{
var connection = OpenAndGetSqliteConnection(context, tableInfo.BulkConfig);
bool doExplicitCommit = false;
try
{
if (context.Database.CurrentTransaction == null)
{
//context.Database.UseTransaction(connection.BeginTransaction());
doExplicitCommit = true;
}
var transaction = (SqliteTransaction)(context.Database.CurrentTransaction == null ?
connection.BeginTransaction() :
context.Database.CurrentTransaction.GetUnderlyingTransaction(tableInfo.BulkConfig));
var command = GetSqliteCommand(context, type, entities, tableInfo, connection, transaction);
type = tableInfo.HasAbstractList ? entities[0].GetType() : type;
int rowsCopied = 0;
foreach (var item in entities)
{
LoadSqliteValues(tableInfo, item, command);
command.ExecuteNonQuery();
ProgressHelper.SetProgress(ref rowsCopied, entities.Count, tableInfo.BulkConfig, progress);
}
if (operationType != OperationType.Delete && tableInfo.BulkConfig.SetOutputIdentity && tableInfo.IdentityColumnName != null)
{
command.CommandText = SqlQueryBuilderSqlite.SelectLastInsertRowId();
long lastRowIdScalar = (long)command.ExecuteScalar();
string identityPropertyName = tableInfo.IdentityColumnName;
var identityPropertyInteger = false;
var identityPropertyUnsigned = false;
var identityPropertyByte = false;
var identityPropertyShort = false;
if (tableInfo.FastPropertyDict[identityPropertyName].Property.PropertyType == typeof(ulong))
{
identityPropertyUnsigned = true;
}
else if (tableInfo.FastPropertyDict[identityPropertyName].Property.PropertyType == typeof(uint))
{
identityPropertyInteger = true;
identityPropertyUnsigned = true;
}
else if (tableInfo.FastPropertyDict[identityPropertyName].Property.PropertyType == typeof(int))
{
identityPropertyInteger = true;
}
else if (tableInfo.FastPropertyDict[identityPropertyName].Property.PropertyType == typeof(ushort))
{
identityPropertyShort = true;
identityPropertyUnsigned = true;
}
else if (tableInfo.FastPropertyDict[identityPropertyName].Property.PropertyType == typeof(short))
{
identityPropertyShort = true;
}
else if (tableInfo.FastPropertyDict[identityPropertyName].Property.PropertyType == typeof(byte))
{
identityPropertyByte = true;
identityPropertyUnsigned = true;
}
else if (tableInfo.FastPropertyDict[identityPropertyName].Property.PropertyType == typeof(sbyte))
{
identityPropertyByte = true;
}
for (int i = entities.Count - 1; i >= 0; i--)
{
if (identityPropertyByte)
{
if (identityPropertyUnsigned)
{
tableInfo.FastPropertyDict[identityPropertyName].Set(entities[i], (byte)lastRowIdScalar);
}
else
{
tableInfo.FastPropertyDict[identityPropertyName].Set(entities[i], (sbyte)lastRowIdScalar);
}
}
else if (identityPropertyShort)
{
if (identityPropertyUnsigned)
{
tableInfo.FastPropertyDict[identityPropertyName].Set(entities[i], (ushort)lastRowIdScalar);
}
else
{
tableInfo.FastPropertyDict[identityPropertyName].Set(entities[i], (short)lastRowIdScalar);
}
}
else if (identityPropertyInteger)
{
if (identityPropertyUnsigned)
{
tableInfo.FastPropertyDict[identityPropertyName].Set(entities[i], (uint)lastRowIdScalar);
}
else
{
tableInfo.FastPropertyDict[identityPropertyName].Set(entities[i], (int)lastRowIdScalar);
}
}
else
{
if (identityPropertyUnsigned)
{
tableInfo.FastPropertyDict[identityPropertyName].Set(entities[i], (ulong)lastRowIdScalar);
}
else
{
tableInfo.FastPropertyDict[identityPropertyName].Set(entities[i], lastRowIdScalar);
}
}
lastRowIdScalar--;
}
}
if (doExplicitCommit)
{
transaction.Commit();
}
}
finally
{
context.Database.CloseConnection();
}
}
protected async Task MergeAsync <T>(DbContext context, Type type, IList <T> entities, TableInfo tableInfo, OperationType operationType, Action <decimal> progress, CancellationToken cancellationToken, bool isAsync) where T : class
{
SqliteConnection connection = isAsync ? await OpenAndGetSqliteConnectionAsync(context, tableInfo.BulkConfig, cancellationToken).ConfigureAwait(false)
: OpenAndGetSqliteConnection(context, tableInfo.BulkConfig);
bool doExplicitCommit = false;
try
{
if (context.Database.CurrentTransaction == null)
{
//context.Database.UseTransaction(connection.BeginTransaction());
doExplicitCommit = true;
}
var dbTransaction = doExplicitCommit ? connection.BeginTransaction()
: context.Database.CurrentTransaction.GetUnderlyingTransaction(tableInfo.BulkConfig);
var transaction = (SqliteTransaction)dbTransaction;
var command = GetSqliteCommand(context, type, entities, tableInfo, connection, transaction);
type = tableInfo.HasAbstractList ? entities[0].GetType() : type;
int rowsCopied = 0;
foreach (var item in entities)
{
LoadSqliteValues(tableInfo, item, command, context);
if (isAsync)
{
await command.ExecuteNonQueryAsync(cancellationToken).ConfigureAwait(false);
}
else
{
command.ExecuteNonQuery();
}
ProgressHelper.SetProgress(ref rowsCopied, entities.Count, tableInfo.BulkConfig, progress);
}
if (operationType == OperationType.Insert && tableInfo.BulkConfig.SetOutputIdentity && tableInfo.IdentityColumnName != null) // For Sqlite Identity can be set by Db only with pure Insert method
{
command.CommandText = SqlQueryBuilderSqlite.SelectLastInsertRowId();
object lastRowIdScalar = isAsync ? await command.ExecuteScalarAsync(cancellationToken).ConfigureAwait(false)
: command.ExecuteScalar();
SetIdentityForOutput(entities, tableInfo, lastRowIdScalar);
}
if (doExplicitCommit)
{
transaction.Commit();
}
}
finally
{
if (isAsync)
{
await context.Database.CloseConnectionAsync().ConfigureAwait(false);
}
else
{
context.Database.CloseConnection();
}
}
}