/// <summary>
/// Produce dynamic store commands for this translator's changes.
/// </summary>
/// <returns>Database commands in a safe order</returns>
private IEnumerable<UpdateCommand> ProduceDynamicCommands()
{
// Initialize DBCommand update compiler
UpdateCompiler updateCompiler = new UpdateCompiler(this);
// Determine affected
Set<EntitySet> tables = new Set<EntitySet>();
foreach (EntitySetBase extent in GetDynamicModifiedExtents())
{
Set<EntitySet> affectedTables = m_viewLoader.GetAffectedTables(extent, m_metadataWorkspace);
//Since these extents don't have Functions defined for update operations,
//the affected tables should be provided via MSL.
//If we dont find any throw an exception
if (affectedTables.Count == 0)
{
throw EntityUtil.Update(System.Data.Entity.Strings.Update_MappingNotFound(
extent.Name), null /*stateEntries*/);
}
foreach (EntitySet table in affectedTables)
{
tables.Add(table);
}
}
// Determine changes to apply to each table
foreach (EntitySet table in tables)
{
DbQueryCommandTree umView = m_connection.GetMetadataWorkspace().GetCqtView(table);
// Propagate changes to root of tree (at which point they are S-Space changes)
ChangeNode changeNode = Propagator.Propagate(this, table, umView);
// Process changes for the table
TableChangeProcessor change = new TableChangeProcessor(table);
foreach (UpdateCommand command in change.CompileCommands(changeNode, updateCompiler))
{
yield return command;
}
}
}
