/// <summary>
/// Persist modifications described in the given cache.
/// </summary>
/// <param name="entityCache">Entity cache containing changes to persist to the store.</param>
/// <returns>Number of cache entries affected by the udpate.</returns>
public Int32 Update(IEntityStateManager entityCache)
{
EntityUtil.CheckArgumentNull(entityCache, "entityCache");
if (!IsStateManagerDirty(entityCache))
{
return(0);
}
// Check that we have a connection before we proceed
if (_connection == null)
{
throw EntityUtil.InvalidOperation(System.Data.Entity.Strings.EntityClient_NoConnectionForAdapter);
}
// Check that the store connection is available
if (_connection.StoreProviderFactory == null || this._connection.StoreConnection == null)
{
throw EntityUtil.InvalidOperation(System.Data.Entity.Strings.EntityClient_NoStoreConnectionForUpdate);
}
// Check that the connection is open before we proceed
if (ConnectionState.Open != _connection.State)
{
throw EntityUtil.InvalidOperation(System.Data.Entity.Strings.EntityClient_ClosedConnectionForUpdate);
}
return(UpdateTranslator.Update(entityCache, this));
}
