/// <summary>
/// Applies expand for the given <see cref="IQueryable"/>.
/// </summary>
/// <param name="queryable">The queryable to expand.</param>
/// <param name="entityQuery">The entity query containing the expand information.</param>
/// <param name="elementType">The element type of the queryable.</param>
/// <param name="postExecuteExpandPaths">An output parameter with expand paths that have to be expanded after the query execution.</param>
/// <returns>The expanded queryable.</returns>
protected virtual IQueryable ApplyExpand(IQueryable queryable, EntityQuery entityQuery, Type elementType, out List <string> postExecuteExpandPaths)
{
postExecuteExpandPaths = null;
if (EntityQuery.ApplyExpand != null)
{
return(EntityQuery.ApplyExpand(entityQuery, queryable, elementType));
}
if (entityQuery.ExpandClause == null)
{
return(queryable);
}
if (!_entityMetadataProvider.IsEntityType(elementType))
{
throw new InvalidOperationException($"Unknown entity type {elementType}.");
}
var metadata = _entityMetadataProvider.GetMetadata(elementType);
if (!CanApplyQueryExpands(queryable, metadata, entityQuery))
{
postExecuteExpandPaths = entityQuery.ExpandClause.PropertyPaths.ToList();
return(queryable);
}
foreach (var propertyPath in entityQuery.ExpandClause.PropertyPaths)
{
queryable = ApplyQueryExpand(queryable, propertyPath.Replace('/', '.'));
}
return(queryable);
}
internal static bool IsAssociation(MemberInfo member, IEntityMetadataProvider classMetadataProvider, out bool isScalar, out Type memberType)
{
memberType = member.GetUnderlyingType();
if (memberType == typeof(string))
{
isScalar = false;
return(false);
}
if (memberType.TryGetGenericType(typeof(IEnumerable <>), out var genericType))
{
isScalar = false;
memberType = genericType.GetGenericArguments()[0];
}
else if (typeof(IEnumerable).IsAssignableFrom(memberType))
{
memberType = null;
isScalar = false;
return(true); // To be safe in case the enumerable is an uninitialized NHibernate collection
}
else
{
isScalar = true;
}
return(classMetadataProvider.IsEntityType(memberType));
}
private static IEnumerable <PropertyInfo> GetProperties(Type instanceType, String propertyPath, IEntityMetadataProvider entityMetadataProvider,
ICollection <PropertyInfo> syntheticProperties, bool throwOnError = true)
{
var propertyNames = propertyPath.Split('.');
var nextInstanceType = instanceType;
var nextMetadata = entityMetadataProvider.IsEntityType(nextInstanceType) ? entityMetadataProvider.GetMetadata(instanceType) : null;
foreach (var propertyName in propertyNames)
{
PropertyInfo property;
if (nextMetadata != null && nextMetadata.SyntheticForeignKeyProperties.TryGetValue(propertyName, out var syntheticProperty))
{
yield return(GetProperty(nextInstanceType, syntheticProperty.AssociationPropertyName, throwOnError));
property = GetProperty(syntheticProperty.EntityType, syntheticProperty.IdentifierPropertyName, throwOnError);
syntheticProperties?.Add(property);
}
else
{
property = GetProperty(nextInstanceType, propertyName, throwOnError);
}
if (property != null)
{
yield return(property);
nextInstanceType = property.PropertyType;
nextMetadata = entityMetadataProvider.IsEntityType(nextInstanceType) ? entityMetadataProvider.GetMetadata(nextInstanceType) : null;
}
else
{
break;
}
}
}
private bool IsEntityType(Type type)
{
return(_entityMetadataProvider.IsEntityType(type));
}
private ClientModelMetadata Create(Type clientType)
{
if (!IsClientModel(clientType))
{
return(null);
}
var properties = clientType.GetProperties().ToDictionary(o => o.Name);
var syntheticProperties = new List <SyntheticForeignKeyProperty>();
var associations = new Dictionary <string, Association>();
var clientProperties = new List <ClientModelProperty>(properties.Count);
foreach (var property in clientType.GetProperties())
{
var propertyType = property.PropertyType;
if (property.GetCustomAttribute <ComplexTypeAttribute>() != null)
{
clientProperties.Add(new ClientModelProperty(
property.Name,
propertyType,
true,
null,
true,
false,
false,
false));
continue;
}
var isCollection = propertyType.IsGenericType && typeof(IEnumerable).IsAssignableFrom(propertyType);
var elementType = isCollection ? propertyType.GetGenericArguments()[0] : propertyType;
var relatedEntityMetadata = _entityMetadataProvider.IsEntityType(elementType)
? _entityMetadataProvider.GetMetadata(elementType)
: null;
if (relatedEntityMetadata != null || IsClientModel(elementType))
{
clientProperties.Add(
isCollection
// Add a one to many relation
? CreateCollectionNavigationProperty(
clientType,
property,
elementType,
relatedEntityMetadata,
associations)
// Add a many to one relation
: CreateEntityNavigationProperty(
clientType,
property,
properties,
relatedEntityMetadata,
syntheticProperties,
associations)
);
continue;
}
clientProperties.Add(new ClientModelProperty(
property.Name,
propertyType,
false,
_dataTypeProvider.GetDataType(propertyType),
BreezeHelper.IsNullable(propertyType),
property.Name == nameof(IClientModel.Id),
false,
false));
}
return(new ClientModelMetadata(
clientType,
null, // TODO: base type
AutoGeneratedKeyType.KeyGenerator,
clientProperties,
syntheticProperties.ToDictionary(o => o.Name),
new List <Type>(), // TODO: base type
new List <string>(), // TODO: base type
IdentifierPropertyNames,
IdentifierPropertyGetters,
IdentifierPropertyTypes,
IdentifierPropertyDataTypes,
IdentifierPropertyTypeLengths,
new HashSet <string>(associations.Values.Where(o => o.IsScalar).SelectMany(o => o.ForeignKeyPropertyNames)),
associations
));
}
private Predicate <object> CreateShouldSerialize(Type memberType, Predicate <object> currentPredicate, Func <object, object> getValue)
{
return(_entityMetadataProvider.IsEntityType(memberType)
? MergePredicates(currentPredicate, o => NHibernateUtil.IsInitialized(getValue(o)))
: currentPredicate);
}
public override IEnumerable <Validator> GetValidators(DataProperty dataProperty, Type type)
{
Validator validator;
var addedValidators = new HashSet <string>();
if (!dataProperty.IsNullable)
{
ModelMetadata modelMetadata = null;
if (_entityMetadataProvider.IsEntityType(type))
{
modelMetadata = _entityMetadataProvider.GetMetadata(type);
}
else if (_clientModelMetadataProvider.IsClientModel(type))
{
modelMetadata = _clientModelMetadataProvider.GetMetadata(type);
}
// Do not permit default values for foreign key properties
if (modelMetadata?.ForeignKeyPropertyNames.Contains(dataProperty.NameOnServer) == true || dataProperty.DataType == DataType.String)
{
addedValidators.Add("fvNotEmpty");
validator = new Validator("fvNotEmpty");
validator.MergeLeft(FluentValidators.GetParameters(new NotEmptyValidator(null)));
yield return(validator);
}
else
{
addedValidators.Add("fvNotNull");
validator = new Validator("fvNotNull");
validator.MergeLeft(FluentValidators.GetParameters(new NotNullValidator()));
yield return(validator);
}
}
if (dataProperty.MaxLength.HasValue)
{
addedValidators.Add("fvLength");
validator = new Validator("fvLength");
validator.MergeLeft(FluentValidators.GetParameters(new LengthValidator(0, dataProperty.MaxLength.Value)));
yield return(validator);
}
if (dataProperty.DataType.HasValue && TryGetDataTypeValidator(dataProperty.DataType.Value, out validator))
{
yield return(validator);
}
if (!_typePropertyValidators.TryGetValue(type, out var propertyValidators))
{
if (!(_validatorFactory.GetValidator(type) is IEnumerable <IValidationRule> validationRules))
{
yield break;
}
propertyValidators = validationRules.OfType <PropertyRule>().Where(IsRuleSupported).ToLookup(o => o.PropertyName);
_typePropertyValidators.Add(type, propertyValidators);
}
// Add fluent validations
foreach (var propertyRule in propertyValidators[dataProperty.NameOnServer])
{
var currentValidator = propertyRule.CurrentValidator;
var name = FluentValidators.GetName(currentValidator);
if (string.IsNullOrEmpty(name) || addedValidators.Contains(name))
{
continue;
}
validator = new Validator(name);
validator.MergeLeft(FluentValidators.GetParameters(currentValidator));
yield return(validator);
}
}
