/// <summary>
/// Checks the validation of a single property
/// </summary>
/// <param name="item">The item.</param>
/// <param name="propertyName">Name of the property.</param>
/// <param name="errors">The errors.</param>
/// <param name="context">The context.</param>
/// <returns></returns>
public bool TryValidate(IRoleDataModel item, string propertyName, List <IModelError> errors, IModelContext context = null)
{
var rtn = TryValidateModel(item, Operation.View, errors, context);
errors.RemoveAll(x => string.Compare(x.Property, propertyName, true) != 0);
return(rtn);
}
/// <summary>
/// Create a new item with the properties (state) of an existing IRoleDataModel
/// </summary>
internal RoleEntityDataModel(IRoleDataModel model)
{
// copy state over
Name = model.Name;
Key = model.Key;
IsAssignable = model.IsAssignable;
}
/// <summary>
/// Validates the model.
/// </summary>
/// <param name="item">The item.</param>
/// <param name="operation">The operation.</param>
/// <param name="errors">The errors.</param>
/// <param name="context">The context.</param>
/// <returns></returns>
private bool TryValidateModel(IRoleDataModel item, Operation operation, List <IModelError> errors, IModelContext context = null)
{
if (item == null)
{
AddNullModelError(errors);
return(false);
}
return(validator.IsValid(item, operation, errors));
}
/// <summary>
/// Create a new item with the properties (state) of an existing IRoleDataModel
/// </summary>
public void Load(IRoleDataModel model)
{
if (model == null)
{
return;
}
// copy state from incomming model
Id = model.Id;
Name = model.Name;
Key = model.Key;
IsAssignable = model.IsAssignable;
}
/// <summary>
/// Represents a single Role instance as a select list item
/// </summary>
public static SelectListItem ToSelectListItem(this IRoleDataModel model, int id = -1)
{
if (model == null)
{
return(new SelectListItem());
}
else
{
return(new SelectListItem
{
Text = string.Format("[{0}] {1}", model.Id, model.IsAssignable.ToString()), // change how the Role appear in drop downs here
Value = model.Id.ToString(),
Selected = (id == model.Id)
});
}
}
/// <summary>
/// Tries the state of the item.
/// </summary>
/// <param name="model">The model.</param>
/// <param name="trigger">The trigger.</param>
/// <param name="errors">The errors.</param>
/// <param name="context">The context.</param>
/// <returns></returns>
protected bool TryUpdateItemState(IRoleDataModel model, RoleTriggers trigger, List <IModelError> errors, IModelContext context = null)
{
var state = ExtractState(model);
var stateMachine = GetStateMachine(model);
if (stateMachine.CanFire(trigger))
{
stateMachine.Fire(trigger);
SetModelState(stateMachine.State, model);
return(service.TrySave(model, errors, context));
}
else
{
MakeErrorMessage(stateMachine, trigger, errors);
return(false);
}
}
/// <summary>
/// Tries to create a new item
/// </summary>
/// <param name="item">The item.</param>
/// <param name="errors">The errors.</param>
/// <param name="context">The context.</param>
/// <returns></returns>
/// <exception cref="InvalidOperationException">Unable to update IRoleDataModel"</exception>
private bool TryCreate(IRoleDataModel item, List <IModelError> errors, IModelContext context = null)
{
if (TryValidateModel(item, Operation.Create, errors, context) == false)
{
return(false);
}
try
{
changeHandler.BeforeCreate(item, context);
dal.Create(item, context);
changeHandler.AfterCreate(item, context);
}
catch (Exception ex)
{
log.Exception(LogName, ex);
throw new InvalidOperationException("Unable to create IRoleDataModel", ex);
}
return(true);
}
/// <summary>
/// Returns true if the model is valid
/// </summary>
public bool IsValid(IRoleDataModel model, Operation op, List <IModelError> errors)
{
var e = new List <IModelError>();
// check for required properties
if (model.Name.IsPresent() == false)
{
e.Add(new ModelError {
Property = "Name", ErrorMessage = "role_name_missing"
});
}
if (model.Key.IsPresent() == false)
{
e.Add(new ModelError {
Property = "Key", ErrorMessage = "role_key_missing"
});
}
// check supplied properties are valid
errors.CombineOrReplace(e);
return(e.Any() == false);
}
protected override void SetModelState(RoleStates state, IRoleDataModel model)
{
// todo : update model properties to reflect the state
throw new NotImplementedException();
}
// Add new methods to represent other states //
protected override RoleStates ExtractState(IRoleDataModel model)
{
// todo : extract a RoleStates to repersent the current model
throw new NotImplementedException();
}
/// <summary>
/// Tries the set the model to "complete" state.
/// </summary>
public bool TrySetComplete(IRoleDataModel model, List <IModelError> errors, IModelContext context = null)
{
return(TryUpdateItemState(model, RoleTriggers.Complete, errors, context));
}
/// <summary>
/// Called when [update].
/// </summary>
/// <param name="item">The item.</param>
/// <param name="context">The context.</param>
public virtual void AfterUpdate(IRoleDataModel item, IModelContext context)
{
}
/// <summary>
/// Called when [customer update].
/// </summary>
/// <param name="item">The item.</param>
/// <param name="context">The context.</param>
public virtual void BeforeUpdate(IRoleDataModel item, IModelContext context)
{
}
/// <summary>
/// Called when [create].
/// </summary>
/// <param name="item">The item.</param>
/// <param name="context">The context.</param>
public virtual void BeforeCreate(IRoleDataModel item, IModelContext context = null)
{
}
/// <summary> /// Extracts the state. /// </summary> abstract protected RoleStates ExtractState(IRoleDataModel model);
/// <summary>
/// Represents a collection Role instance as select list items
/// </summary>
public static IEnumerable <SelectListItem> ToSelectListItem(this IEnumerable <IRoleDataModel> models, IRoleDataModel selected = null)
{
if (models == null)
{
return(Enumerable.Empty <SelectListItem>());
}
else
{
var rtn = new List <SelectListItem>();
rtn.Add(new SelectListItem {
Text = "Select .....", Value = "-1"
});
rtn.AddRange(models.Select(x => x.ToSelectListItem(selected == null ? -1 : selected.Id)).OrderBy(x => x.Text));
return(rtn);
}
}
/// <summary>
/// Gets the state machine.
/// </summary>
protected virtual StateMachine <RoleStates, RoleTriggers> GetStateMachine(IRoleDataModel model)
{
return(new StateMachine <RoleStates, RoleTriggers>(ExtractState(model)));
}
/// <summary>
/// Tries to save the item.
/// </summary>
/// <param name="item"></param>
/// <param name="errors"></param>
/// <param name="context"></param>
/// <returns></returns>
public bool TrySave(IRoleDataModel item, List <IModelError> errors, IModelContext context = null)
{
return(item.IsNew ?
TryCreate(item, errors, context) :
TryUpdate(item, errors, context));
}
/// <summary> /// Sets the state of the model. /// </summary> abstract protected void SetModelState(RoleStates state, IRoleDataModel model);
