/// <summary>
/// Constructs a grouper based on the contents of the given entity state manager.
/// </summary>
/// <param name="stateManager">Entity state manager containing changes to be processed.</param>
/// <param name="metadataWorkspace">Metadata workspace.</param>
/// <param name="connection">Map connection</param>
/// <param name="commandTimeout">Timeout for update commands; null means 'use provider default'</param>
private UpdateTranslator(IEntityStateManager stateManager, MetadataWorkspace metadataWorkspace, EntityConnection connection, int? commandTimeout)
{
EntityUtil.CheckArgumentNull(stateManager, "stateManager");
EntityUtil.CheckArgumentNull(metadataWorkspace, "metadataWorkspace");
EntityUtil.CheckArgumentNull(connection, "connection");
// propagation state
m_changes = new Dictionary<EntitySetBase, ChangeNode>();
m_functionChanges = new Dictionary<EntitySetBase, List<ExtractedStateEntry>>();
m_stateEntries = new List<IEntityStateEntry>();
m_knownEntityKeys = new Set<EntityKey>();
m_requiredEntities = new Dictionary<EntityKey, AssociationSet>();
m_optionalEntities = new Set<EntityKey>();
m_includedValueEntities = new Set<EntityKey>();
// workspace state
m_metadataWorkspace = metadataWorkspace;
m_viewLoader = metadataWorkspace.GetUpdateViewLoader();
m_stateManager = stateManager;
// ancillary propagation services
m_recordConverter = new RecordConverter(this);
m_constraintValidator = new RelationshipConstraintValidator(this);
m_providerServices = DbProviderServices.GetProviderServices(connection.StoreProviderFactory);
m_connection = connection;
m_commandTimeout = commandTimeout;
// metadata cache
m_extractorMetadata = new Dictionary<Tuple<EntitySetBase, StructuralType>, ExtractorMetadata>(); ;
// key management
KeyManager = new KeyManager(this);
KeyComparer = CompositeKey.CreateComparer(KeyManager);
}
