static void AppendSignaturePropertyCriteriaTo <TId>(ICriteria criteria, IEntityWithTypedId <TId> entity)
{
foreach (var signatureProperty in entity.GetSignatureProperties())
{
var propertyType = signatureProperty.PropertyType;
var propertyValue = signatureProperty.GetValue(entity, null);
var propertyName = signatureProperty.Name;
if (propertyType.GetInterfaces().Any(
x => x.IsGenericType && x.GetGenericTypeDefinition() == typeof(IEntityWithTypedId <>)))
{
AppendEntityCriteriaTo <TId>(criteria, propertyName, propertyValue);
}
else if (typeof(ValueObject).IsAssignableFrom(propertyType))
{
AppendValueObjectSignaturePropertyCriteriaTo(criteria, entity.GetType(), propertyName,
propertyValue as ValueObject);
}
else
{
AppendSimplePropertyCriteriaTo(criteria, entity.GetType(), propertyValue, propertyType,
propertyName);
}
}
}
/// <summary>
/// Provides a behavior specific repository for checking if a duplicate exists of an existing entity.
/// </summary>
/// <typeparam name="TId">Entity Id type.</typeparam>
/// <param name="entity">The entity.</param>
/// <returns>
/// <c>true</c> if a duplicate exists, <c>false</c> otherwise.
/// </returns>
/// <exception cref="System.ArgumentNullException">entity is null. </exception>
public bool DoesDuplicateExistWithTypedIdOf <TId>(IEntityWithTypedId <TId> entity)
{
if (entity == null)
{
throw new ArgumentNullException(nameof(entity));
}
var sessionForEntity = GetSessionFor(entity);
var previousFlushMode = sessionForEntity.FlushMode;
// We do NOT want this to flush pending changes as checking for a duplicate should
// only compare the object against data that's already in the database
sessionForEntity.FlushMode = FlushMode.Manual;
try {
var criteria =
sessionForEntity.CreateCriteria(entity.GetType())
.Add(Restrictions.Not(Restrictions.Eq("Id", entity.Id)))
.SetMaxResults(1);
AppendSignaturePropertyCriteriaTo(criteria, entity);
var doesDuplicateExist = criteria.List().Count > 0;
return(doesDuplicateExist);
}
finally {
sessionForEntity.FlushMode = previousFlushMode;
}
}
private void AppendSignaturePropertyCriteriaTo<TId>(ICriteria criteria, IEntityWithTypedId<TId> entity) {
foreach (var signatureProperty in entity.GetSignatureProperties()) {
var propertyType = signatureProperty.PropertyType;
var propertyValue = signatureProperty.GetValue(entity, null);
if (propertyType.IsEnum) {
criteria.Add(Restrictions.Eq(signatureProperty.Name, (int)propertyValue));
}
else if (
propertyType.GetInterfaces().Any(
x => x.IsGenericType && x.GetGenericTypeDefinition() == typeof(IEntityWithTypedId<>))) {
AppendEntityCriteriaTo<TId>(criteria, signatureProperty, propertyValue);
}
else if (propertyType == typeof(DateTime)) {
this.AppendDateTimePropertyCriteriaTo(criteria, signatureProperty, propertyValue);
}
else if (propertyType == typeof(string)) {
AppendStringPropertyCriteriaTo(criteria, signatureProperty, propertyValue);
}
else if (propertyType.IsValueType) {
AppendValuePropertyCriteriaTo(criteria, signatureProperty, propertyValue);
}
else {
throw new ApplicationException(
"Can't determine how to use " + entity.GetType() + "." + signatureProperty.Name +
" when looking for duplicate entries. To remedy this, " +
"you can create a custom validator or report an issue to the S#arp Architecture " +
"project, detailing the type that you'd like to be accommodated.");
}
}
}
/// <summary>
/// Uses reflection to set the Id of a <see cref = "EntityWithTypedId{IdT}" />.
/// </summary>
public static void SetIdOf <TId>(IEntityWithTypedId <TId> entity, TId id)
{
// Set the data property reflectively
var idProperty = entity.GetType().GetProperty("Id", BindingFlags.Public | BindingFlags.Instance);
Check.Ensure(idProperty != null, "idProperty could not be found");
idProperty.SetValue(entity, id, null);
}
/// <summary>
/// Uses reflection to set the Id of a <see cref="EntityWithTypedId{IdT}" />.
/// </summary>
/// <exception cref="ArgumentNullException"><paramref name="entity"/> is <see langword="null" />.</exception>
/// <exception cref="InvalidOperationException">Property with name 'Id' could not be found.</exception>
public static void SetIdOf <TId>([NotNull] IEntityWithTypedId <TId> entity, TId id)
{
if (entity == null)
{
throw new ArgumentNullException(nameof(entity));
}
// Set the data property reflectively
PropertyInfo idProperty = entity.GetType().GetProperty("Id", BindingFlags.Public | BindingFlags.Instance);
if (idProperty == null)
{
throw new InvalidOperationException("Property with name 'Id' could not be found.");
}
idProperty.SetValue(entity, id, null);
}
/// <summary>
/// Provides a behavior specific repository for checking if a duplicate exists of an existing entity.
/// </summary>
public bool DoesDuplicateExistWithTypedIdOf<TId>(IEntityWithTypedId<TId> entity) {
if (entity == null) throw new ArgumentNullException("Entity may not be null when checking for duplicates");
ISession session = _sessionFactory.GetCurrentSession();
FlushMode previousFlushMode = session.FlushMode;
// We do NOT want this to flush pending changes as checking for a duplicate should
// only compare the object against data that's already in the database
session.FlushMode = FlushMode.Never;
var criteria =
session.CreateCriteria(entity.GetType()).Add(Restrictions.Not(Restrictions.Eq("Id", entity.Id))).
SetMaxResults(1);
AppendSignaturePropertyCriteriaTo(criteria, entity);
bool doesDuplicateExist = criteria.List().Count > 0;
session.FlushMode = previousFlushMode;
return doesDuplicateExist;
}
/// <summary>
/// Provides a behavior specific repository for checking if a duplicate exists of an existing entity.
/// </summary>
public bool DoesDuplicateExistWithTypedIdOf <TId>(IEntityWithTypedId <TId> entity)
{
Check.Require(entity != null, "Entity may not be null when checking for duplicates");
var session = GetSessionFor(entity);
var previousFlushMode = session.FlushMode;
// We do NOT want this to flush pending changes as checking for a duplicate should
// only compare the object against data that's already in the database
session.FlushMode = FlushMode.Never;
var criteria =
session.CreateCriteria(entity.GetType()).Add(Restrictions.Not(Restrictions.Eq("Id", entity.Id))).SetMaxResults(1);
AppendSignaturePropertyCriteriaTo(criteria, entity);
var doesDuplicateExist = criteria.List().Count > 0;
session.FlushMode = previousFlushMode;
return(doesDuplicateExist);
}
private void AppendSignaturePropertyCriteriaTo <IdT>(ICriteria criteria, IEntityWithTypedId <IdT> entity)
{
foreach (PropertyInfo signatureProperty in entity.GetSignatureProperties())
{
Type propertyType = signatureProperty.PropertyType;
object propertyValue = signatureProperty.GetValue(entity, null);
if (propertyType.IsEnum)
{
criteria.Add(
Expression.Eq(signatureProperty.Name, (int)propertyValue));
}
else if (propertyType.IsSubclassOf(typeof(IEntityWithTypedId <IdT>)))
{
AppendEntityCriteriaTo(criteria, signatureProperty, propertyValue);
}
else if (propertyType == typeof(DateTime))
{
AppendDateTimePropertyCriteriaTo(criteria, signatureProperty, propertyValue);
}
else if (propertyType == typeof(String))
{
AppendStringPropertyCriteriaTo(criteria, signatureProperty, propertyValue);
}
else if (propertyType.IsValueType)
{
AppendValuePropertyCriteriaTo(criteria, signatureProperty, propertyValue);
}
else
{
throw new ApplicationException("Can't determine how to use " + entity.GetType() + "." +
signatureProperty.Name + " when looking for duplicate entries. To remedy this, " +
"you can create a custom validator or report an issue to the S#arp Architecture " +
"project, detailing the type that you'd like to be accommodated.");
}
}
}
