/// <summary>
/// Update a metadata row
/// </summary>
internal async Task <(SyncContext context, bool metadataUpdated)> InternalUpdateMetadatasAsync(IScopeInfo scopeInfo, SyncContext context, DbSyncAdapter syncAdapter, SyncRow row, Guid?senderScopeId, bool forceWrite, DbConnection connection, DbTransaction transaction)
{
context.SyncStage = SyncStage.ChangesApplying;
var(command, _) = await syncAdapter.GetCommandAsync(DbCommandType.UpdateMetadata, connection, transaction);
if (command == null)
{
return(context, false);
}
// Set the parameters value from row
syncAdapter.SetColumnParametersValues(command, row);
// Set the special parameters for update
syncAdapter.AddScopeParametersValues(command, senderScopeId, 0, row.RowState == DataRowState.Deleted, forceWrite);
await this.InterceptAsync(new DbCommandArgs(context, command, connection, transaction)).ConfigureAwait(false);
var metadataUpdatedRowsCount = await command.ExecuteNonQueryAsync().ConfigureAwait(false);
// Check if we have a return value instead
var syncRowCountParam = DbSyncAdapter.GetParameter(command, "sync_row_count");
if (syncRowCountParam != null)
{
metadataUpdatedRowsCount = (int)syncRowCountParam.Value;
}
command.Dispose();
return(context, metadataUpdatedRowsCount > 0);
}
/// <summary>
/// Apply a single update in the current datasource. if forceWrite, override conflict situation and force the update
/// </summary>
private async Task <bool> InternalApplyConflictUpdateAsync(SyncContext context, DbSyncAdapter syncAdapter, SyncRow row, long?lastTimestamp, Guid?senderScopeId, bool forceWrite, DbConnection connection, DbTransaction transaction)
{
if (row.Table == null)
{
throw new ArgumentException("Schema table is not present in the row");
}
var command = await syncAdapter.GetCommandAsync(DbCommandType.UpdateRow, connection, transaction);
// Set the parameters value from row
syncAdapter.SetColumnParametersValues(command, row);
// Set the special parameters for update
syncAdapter.AddScopeParametersValues(command, senderScopeId, lastTimestamp, false, forceWrite);
var rowUpdatedCount = await command.ExecuteNonQueryAsync().ConfigureAwait(false);
// Check if we have a return value instead
var syncRowCountParam = DbSyncAdapter.GetParameter(command, "sync_row_count");
if (syncRowCountParam != null)
{
rowUpdatedCount = (int)syncRowCountParam.Value;
}
return(rowUpdatedCount > 0);
}
/// <summary>
/// Reset a table, deleting rows from table and tracking_table
/// </summary>
internal async Task <bool> InternalResetTableAsync(SyncContext context, DbSyncAdapter syncAdapter, DbConnection connection, DbTransaction transaction)
{
var command = await syncAdapter.GetCommandAsync(DbCommandType.Reset, connection, transaction);
var rowCount = await command.ExecuteNonQueryAsync().ConfigureAwait(false);
return(rowCount > 0);
}
/// <summary>
/// Try to get a source row
/// </summary>
private async Task <SyncRow> InternalGetConflictRowAsync(SyncContext context, DbSyncAdapter syncAdapter, Guid localScopeId, SyncRow primaryKeyRow, SyncTable schema, DbConnection connection, DbTransaction transaction)
{
// Get the row in the local repository
var command = await syncAdapter.GetCommandAsync(DbCommandType.SelectRow, connection, transaction);
// set the primary keys columns as parameters
syncAdapter.SetColumnParametersValues(command, primaryKeyRow);
// Create a select table based on the schema in parameter + scope columns
var changesSet = schema.Schema.Clone(false);
var selectTable = DbSyncAdapter.CreateChangesTable(schema, changesSet);
using var dataReader = await command.ExecuteReaderAsync().ConfigureAwait(false);
if (!dataReader.Read())
{
dataReader.Close();
return(null);
}
// Create a new empty row
var syncRow = selectTable.NewRow();
for (var i = 0; i < dataReader.FieldCount; i++)
{
var columnName = dataReader.GetName(i);
// if we have the tombstone value, do not add it to the table
if (columnName == "sync_row_is_tombstone")
{
var isTombstone = Convert.ToInt64(dataReader.GetValue(i)) > 0;
syncRow.RowState = isTombstone ? DataRowState.Deleted : DataRowState.Modified;
continue;
}
if (columnName == "update_scope_id")
{
// var readerScopeId = dataReader.GetValue(i);
continue;
}
var columnValueObject = dataReader.GetValue(i);
var columnValue = columnValueObject == DBNull.Value ? null : columnValueObject;
syncRow[columnName] = columnValue;
}
// if syncRow is not a deleted row, we can check for which kind of row it is.
if (syncRow != null && syncRow.RowState == DataRowState.Unchanged)
{
syncRow.RowState = DataRowState.Modified;
}
dataReader.Close();
return(syncRow);
}
/// <summary>
/// Reset a table, deleting rows from table and tracking_table
/// </summary>
internal async Task <SyncContext> InternalResetTableAsync(IScopeInfo scopeInfo, SyncContext context, DbSyncAdapter syncAdapter, DbConnection connection, DbTransaction transaction)
{
var(command, _) = await syncAdapter.GetCommandAsync(DbCommandType.Reset, connection, transaction);
if (command != null)
{
await this.InterceptAsync(new DbCommandArgs(context, command, connection, transaction)).ConfigureAwait(false);
await command.ExecuteNonQueryAsync().ConfigureAwait(false);
command.Dispose();
}
return(context);
}
/// <summary>
/// Internal update untracked rows routine
/// </summary>
internal async Task <int> InternalUpdateUntrackedRowsAsync(SyncContext ctx, DbSyncAdapter syncAdapter, DbConnection connection, DbTransaction transaction)
{
// Get correct Select incremental changes command
var command = await syncAdapter.GetCommandAsync(DbCommandType.UpdateUntrackedRows, connection, transaction);
// Execute
var rowAffected = await command.ExecuteNonQueryAsync().ConfigureAwait(false);
// Check if we have a return value instead
var syncRowCountParam = DbSyncAdapter.GetParameter(command, "sync_row_count");
if (syncRowCountParam != null)
{
rowAffected = (int)syncRowCountParam.Value;
}
return(rowAffected);
}
/// <summary>
/// Internal update untracked rows routine
/// </summary>
internal async Task <(SyncContext context, int updated)> InternalUpdateUntrackedRowsAsync(IScopeInfo scopeInfo, SyncContext context, DbSyncAdapter syncAdapter, DbConnection connection, DbTransaction transaction, CancellationToken cancellationToken = default, IProgress <ProgressArgs> progress = null)
{
// Get table builder
var tableBuilder = this.GetTableBuilder(syncAdapter.TableDescription, scopeInfo);
// Check if tracking table exists
bool trackingTableExists;
(context, trackingTableExists) = await this.InternalExistsTrackingTableAsync(scopeInfo, context, tableBuilder, connection, transaction, CancellationToken.None, null).ConfigureAwait(false);
if (!trackingTableExists)
{
throw new MissingTrackingTableException(tableBuilder.TableDescription.GetFullName());
}
// Get correct Select incremental changes command
var(command, _) = await syncAdapter.GetCommandAsync(DbCommandType.UpdateUntrackedRows, connection, transaction);
if (command == null)
{
return(context, 0);
}
await this.InterceptAsync(new DbCommandArgs(context, command, connection, transaction), progress, cancellationToken).ConfigureAwait(false);
// Execute
var rowAffected = await command.ExecuteNonQueryAsync().ConfigureAwait(false);
// Check if we have a return value instead
var syncRowCountParam = DbSyncAdapter.GetParameter(command, "sync_row_count");
if (syncRowCountParam != null)
{
rowAffected = (int)syncRowCountParam.Value;
}
command.Dispose();
return(context, rowAffected);
}
/// <summary>
/// Update a metadata row
/// </summary>
internal async Task <bool> InternalUpdateMetadatasAsync(SyncContext context, DbSyncAdapter syncAdapter, SyncRow row, Guid?senderScopeId, bool forceWrite, DbConnection connection, DbTransaction transaction)
{
var command = await syncAdapter.GetCommandAsync(DbCommandType.UpdateMetadata, connection, transaction);
// Set the parameters value from row
syncAdapter.SetColumnParametersValues(command, row);
// Set the special parameters for update
syncAdapter.AddScopeParametersValues(command, senderScopeId, 0, row.RowState == DataRowState.Deleted, forceWrite);
var metadataUpdatedRowsCount = await command.ExecuteNonQueryAsync().ConfigureAwait(false);
// Check if we have a return value instead
var syncRowCountParam = DbSyncAdapter.GetParameter(command, "sync_row_count");
if (syncRowCountParam != null)
{
metadataUpdatedRowsCount = (int)syncRowCountParam.Value;
}
return(metadataUpdatedRowsCount > 0);
}
/// <summary>
/// Enabling all constraints on synced tables
/// </summary>
internal async Task InternalEnableConstraintsAsync(SyncContext context, DbSyncAdapter syncAdapter, DbConnection connection, DbTransaction transaction)
{
var command = await syncAdapter.GetCommandAsync(DbCommandType.EnableConstraints, connection, transaction).ConfigureAwait(false);
await command.ExecuteNonQueryAsync().ConfigureAwait(false);
}
