internal static SqliteCommand GetSqliteCommand <T>(DbContext context, Type type, IList <T> entities, TableInfo tableInfo, SqliteConnection connection, SqliteTransaction transaction)
{
SqliteCommand command = connection.CreateCommand();
command.Transaction = transaction;
var operationType = tableInfo.BulkConfig.OperationType;
switch (operationType)
{
case OperationType.Insert:
command.CommandText = SqlQueryBuilderSqlite.InsertIntoTable(tableInfo, OperationType.Insert);
break;
case OperationType.InsertOrUpdate:
command.CommandText = SqlQueryBuilderSqlite.InsertIntoTable(tableInfo, OperationType.InsertOrUpdate);
break;
case OperationType.InsertOrUpdateDelete:
throw new NotSupportedException("Sqlite supports only UPSERT(analog for MERGE WHEN MATCHED) but does not have functionality to do: 'WHEN NOT MATCHED BY SOURCE THEN DELETE'" +
"What can be done is to read all Data, find rows that are not in input List, then with those do the BulkDelete.");
case OperationType.Update:
command.CommandText = SqlQueryBuilderSqlite.UpdateSetTable(tableInfo);
break;
case OperationType.Delete:
command.CommandText = SqlQueryBuilderSqlite.DeleteFromTable(tableInfo);
break;
}
type = tableInfo.HasAbstractList ? entities[0].GetType() : type;
var entityType = context.Model.FindEntityType(type);
var entityPropertiesDict = entityType.GetProperties().Where(a => tableInfo.PropertyColumnNamesDict.ContainsKey(a.Name)).ToDictionary(a => a.Name, a => a);
var properties = type.GetProperties();
foreach (var property in properties)
{
if (entityPropertiesDict.ContainsKey(property.Name))
{
var propertyEntityType = entityPropertiesDict[property.Name];
string columnName = propertyEntityType.GetColumnName();
var propertyType = Nullable.GetUnderlyingType(property.PropertyType) ?? property.PropertyType;
/*var sqliteType = SqliteType.Text; // "String" || "Decimal" || "DateTime"
* if (propertyType.Name == "Int16" || propertyType.Name == "Int32" || propertyType.Name == "Int64")
* sqliteType = SqliteType.Integer;
* if (propertyType.Name == "Float" || propertyType.Name == "Double")
* sqliteType = SqliteType.Real;
* if (propertyType.Name == "Guid" )
* sqliteType = SqliteType.Blob; */
var parameter = new SqliteParameter($"@{columnName}", propertyType); // ,sqliteType // ,null
command.Parameters.Add(parameter);
}
}
var shadowProperties = tableInfo.ShadowProperties;
foreach (var shadowProperty in shadowProperties)
{
var parameter = new SqliteParameter($"@{shadowProperty}", typeof(string));
command.Parameters.Add(parameter);
}
command.Prepare(); // Not Required (check if same efficiency when removed)
return(command);
}
internal static SqliteCommand GetSqliteCommand <T>(DbContext context, Type type, IList <T> entities, TableInfo tableInfo, SqliteConnection connection, SqliteTransaction transaction)
{
SqliteCommand command = connection.CreateCommand();
command.Transaction = transaction;
var operationType = tableInfo.BulkConfig.OperationType;
switch (operationType)
{
case OperationType.Insert:
command.CommandText = SqlQueryBuilderSqlite.InsertIntoTable(tableInfo, OperationType.Insert);
break;
case OperationType.InsertOrUpdate:
command.CommandText = SqlQueryBuilderSqlite.InsertIntoTable(tableInfo, OperationType.InsertOrUpdate);
break;
case OperationType.InsertOrUpdateDelete:
throw new NotSupportedException("'BulkInsertOrUpdateDelete' not supported for Sqlite. Sqlite has only UPSERT statement (analog for MERGE WHEN MATCHED) but no functionality for: 'WHEN NOT MATCHED BY SOURCE THEN DELETE'." +
" Another way to achieve this is to BulkRead existing data from DB, split list into sublists and call separately Bulk methods for Insert, Update, Delete.");
case OperationType.Update:
command.CommandText = SqlQueryBuilderSqlite.UpdateSetTable(tableInfo);
break;
case OperationType.Delete:
command.CommandText = SqlQueryBuilderSqlite.DeleteFromTable(tableInfo);
break;
}
type = tableInfo.HasAbstractList ? entities[0].GetType() : type;
var entityType = context.Model.FindEntityType(type);
var entityPropertiesDict = entityType.GetProperties().Where(a => tableInfo.PropertyColumnNamesDict.ContainsKey(a.Name)).ToDictionary(a => a.Name, a => a);
var properties = type.GetProperties(BindingFlags.Instance | BindingFlags.Public | BindingFlags.NonPublic);
foreach (var property in properties)
{
if (entityPropertiesDict.ContainsKey(property.Name))
{
var propertyEntityType = entityPropertiesDict[property.Name];
string columnName = propertyEntityType.GetColumnName(tableInfo.ObjectIdentifier);
var propertyType = Nullable.GetUnderlyingType(property.PropertyType) ?? property.PropertyType;
//SqliteType(CpropertyType.Name): Text(String, Decimal, DateTime); Integer(Int16, Int32, Int64) Real(Float, Double) Blob(Guid)
var parameter = new SqliteParameter($"@{property.Name}", propertyType); // ,sqliteType // ,null //()
command.Parameters.Add(parameter);
}
}
var shadowProperties = tableInfo.ShadowProperties;
foreach (var shadowProperty in shadowProperties)
{
var parameter = new SqliteParameter($"@{shadowProperty}", typeof(string));
command.Parameters.Add(parameter);
}
command.Prepare(); // Not Required but called for efficiency (prepared should be little faster)
return(command);
}