Entities deep diff
$ dotnet add package DeepDiffFirst configure DeepDiff to know what types you want to compare, in the startup of your application
var diffConfiguration = new DiffConfiguration();
diffConfiguration.Entity<Entity>()
.HasKey(x => new { x.StartsOn, x.Name })
.HasValues(x => new { x.Price, x.Volume })
.HasMany(x => x.SubEntities)
.OnInsert(cfg => cfg.SetValue(x => x.PersistChange, PersistChange.Insert))
.OnUpdate(cfg => cfg.SetValue(x => x.PersistChange, PersistChange.Update))
.OnDelete(cfg => cfg.SetValue(x => x.PersistChange, PersistChange.Delete));
diffConfiguration.Entity<SubEntity>()
.HasKey(x => x.SubName)
.HasValues(x => x.Energy)
.OnInsert(cfg => cfg.SetValue(x => x.PersistChange, PersistChange.Insert))
.OnUpdate(cfg => cfg.SetValue(x => x.PersistChange, PersistChange.Update))
.OnDelete(cfg => cfg.SetValue(x => x.PersistChange, PersistChange.Delete))
var deepDiff = diffConfiguration.CreateDeepDiff();
Then in your application code, this will detect insert/update/delete between existing and new entities. In case of update, properties will be copied from new to existing entity
var resultEntities = deepDiff.MergeMany(existingEntities, newEntities); // resultEntities will contain 'merged' entities
Sample entities definition
public class Entity
{
public Guid Id { get; set; } // DB Key
public DateTime StartsOn { get; set; } // Business Key
public string Name { get; set; } // Business Key
public decimal Price { get; set; }
public int Volume { get; set; }
public PersistChange PersistChange { get; set; }
public List<SubEntity> SubEntities { get; set; }
}
public class SubEntity
{
public Guid Id { get; set; } // DB Key
public string SubName { get; set; } // Business Key
public int Energy { get; set; }
public PersistChange PersistChange { get; set; }
public Guid EntityId { get; set; } // Foreign Key
}
public enum PersistChange
{
None,
Inserted,
Updated,
Deleted
}
Defines properties used to compare and detect an insert and a delete. Mandatory unless NoKey has been defined
IEntityConfiguration<TEntity> HasKey<TKey>(Expression<Func<TEntity, TKey>> keyExpression)
IEntityConfiguration<TEntity> HasKey<TKey>(Expression<Func<TEntity, TKey>> keyExpression, Action<IKeyConfiguration<TEntity>> keyConfigurationAction)
Defines properties used to detect an update in case keys are identical
IEntityConfiguration<TEntity> HasValues<TValue>(Expression<Func<TEntity, TValue>> valuesExpression)
IEntityConfiguration<TEntity> HasValues<TValue>(Expression<Func<TEntity, TValue>> valuesExpression, Action<IValuesConfiguration<TEntity>> valuesConfigurationAction)Defines property to navigate to a single child
IEntityConfiguration<TEntity> HasOne<TChildEntity>(Expression<Func<TEntity, TChildEntity>> navigationPropertyExpression)
IEntityConfiguration<TEntity> HasOne<TChildEntity>(Expression<Func<TEntity, TChildEntity>> navigationPropertyExpression, Action<INavigationOneConfiguration<TEntity, TChildEntity>> navigationOneConfigurationAction)Defines property to navigate to multiple children
IEntityConfiguration<TEntity> HasMany<TChildEntity>(Expression<Func<TEntity, List<TChildEntity>>> navigationPropertyExpression)
IEntityConfiguration<TEntity> HasMany<TChildEntity>(Expression<Func<TEntity, List<TChildEntity>>> navigationPropertyExpression, Action<INavigationManyConfiguration<TEntity, TChildEntity>> navigationManyConfigurationAction)When set to true, engine will use force comparison by type if children are inherited and children collection is not abstract
INavigationManyConfiguration<TEntity, TChildEntity> UseDerivedTypes(bool use = false)Defines operations to perform when an insert is detected
IEntityConfiguration<TEntity> OnInsert(Action<IInsertConfiguration<TEntity>> insertConfigurationAction)When an insert is detected, overwrite a property with a specific value
IInsertConfiguration<TEntity> SetValue<TMember>(Expression<Func<TEntity, TMember>> destinationMember, TMember value)Defines operations to perform when an insert is detected. Properties specified in Values(...) will automatically be copied from new entity to existing one
IEntityConfiguration<TEntity> OnUpdate(Action<IUpdateConfiguration<TEntity>> updateConfigurationAction)When an update is detected, overwrite a property with a specific value
IUpdateConfiguration<TEntity> SetValue<TMember>(Expression<Func<TEntity, TMember>> destinationMember, TMember value)When an update is detected, specify additional properties to copy from new entity to existing one
IUpdateConfiguration<TEntity> CopyValues<TValue>(Expression<Func<TEntity, TValue>> copyValuesExpression)Defines operations to perform when a delete is detected.
IEntityConfiguration<TEntity> OnDelete(Action<IDeleteConfiguration<TEntity>> deleteConfigurationAction)When a delete is detected, overwrite property with a specific value
IDeleteConfiguration<TEntity> SetValue<TMember>(Expression<Func<TEntity, TMember>> destinationMember, TMember value)Defines the IEqualityComparer to use when comparing entity of that type
IEntityConfiguration<TEntity> WithComparer<T>(IEqualityComparer<T> equalityComparer)Defines additional criteria to detect an update even if Values are identical
IEntityConfiguration<TEntity> ForceUpdateIf(Action<IForceUpdateIfConfiguration<TEntity>> forceUpdateIfConfigurationAction)Trigger an update when a nested entity is modified
IForceUpdateIfConfiguration<TEntity> NestedEntitiesModified()Trigger an update when an equality condition is met
IForceUpdateIfConfiguration<TEntity> Equals<TMember>(Expression<Func<TEntity, TMember>> compareToMember, TMember compareToValue)Defines entity properties which will not be found anywhere in the entity diff configuration. This will be used by ValidateIfEveryPropertiesAreReferenced
IEntityConfiguration<TEntity> Ignore<TIgnore>(Expression<Func<TEntity, TIgnore>> ignoreExpression)Defines a no key entity, only update will be deteted for this kind of entity. Mandatory if no HasKey has been defined
IEntityConfiguration<TEntity> NoKey()TEntity MergeSingle<TEntity>(TEntity existingEntity, TEntity newEntity)
TEntity MergeSingle<TEntity>(TEntity existingEntity, TEntity newEntity, IOperationListener operationListener)
TEntity MergeSingle<TEntity>(TEntity existingEntity, TEntity newEntity, Action<IMergeSingleConfiguration> mergeSingleConfigurationAction)
TEntity MergeSingle<TEntity>(TEntity existingEntity, TEntity newEntity, IOperationListener operationListener, Action<IMergeSingleConfiguration> mergeSingleConfigurationAction)IEnumerable<TEntity> MergeMany<TEntity>(IEnumerable<TEntity> existingEntities, IEnumerable<TEntity> newEntities)
IEnumerable<TEntity> MergeMany<TEntity>(IEnumerable<TEntity> existingEntities, IEnumerable<TEntity> newEntities, IOperationListener operationListener)
IEnumerable<TEntity> MergeMany<TEntity>(IEnumerable<TEntity> existingEntities, IEnumerable<TEntity> newEntities, Action<IMergeManyConfiguration> mergeManyConfigurationAction)
IEnumerable<TEntity> MergeMany<TEntity>(IEnumerable<TEntity> existingEntities, IEnumerable<TEntity> newEntities, IOperationListener operationListener, Action<IMergeManyConfiguration> mergeManyConfigurationAction)void CompareSingle<TEntity>(TEntity existingEntity, TEntity newEntity, IOperationListener operationListener);
void CompareSingle<TEntity>(TEntity existingEntity, TEntity newEntity, IOperationListener operationListener, Action<ICompareSingleConfiguration> compareSingleConfigurationAction);void CompareMany<TEntity>(IEnumerable<TEntity> existingEntities, IEnumerable<TEntity> newEntities, IOperationListener operationListener);
void CompareMany<TEntity>(IEnumerable<TEntity> existingEntities, IEnumerable<TEntity> newEntities, IOperationListener operationListener, Action<ICompareManyConfiguration> compareManyConfigurationAction);When set to true, hashtable will be used when searching in a collection of entities with a minimum HashtableThreshold (15 by default) entries (true by default)
IMergeSingleConfiguration UseHashtable(bool use = true)Defines minimum number of entries in collection to use hashtable (15 by default)
IMergeSingleConfiguration HashtableThreshold(int threshold = 15)Force OnUpdate to be triggered if a nested entity has been modified even if current entity is not modified
IMergeSingleConfiguration ForceOnUpdateEvenIfModificationsDetectedOnlyInNestedLevel(bool force = false)Choose which equality comparer engine will use to compare keys and values (Precompiled by default)
IMergeSingleConfiguration SetEqualityComparer(EqualityComparers equalityComparer = EqualityComparers.Precompiled)When set to true, engine will use parallelism to compare entities (false by default)
IMergeSingleConfiguration UseParallelism(bool use = false);When set to true, hashtable will be used when searching in a collection of entities with a minimum HashtableThreshold (15 by default) entries (true by default)
IMergeManyConfiguration UseHashtable(bool use = true)Defines minimum number of entries in collection to use hashtable (15 by default)
IMergeManyConfiguration HashtableThreshold(int threshold = 15)Force OnUpdate to be triggered if a nested entity has been modified even if current entity is not modified
IMergeManyConfiguration ForceOnUpdateEvenIfModificationsDetectedOnlyInNestedLevel(bool force = false)Choose which equality comparer engine will use to compare keys and values (Precompiled by default)
IMergeManyConfiguration SetEqualityComparer(EqualityComparers equalityComparer = EqualityComparers.Precompiled)When set to true, engine will use parallelism to compare entities (false by default)
IMergeManyConfiguration UseParallelism(bool use = false);When set to true, hashtable will be used when searching in a collection of entities with a minimum HashtableThreshold (15 by default) entries (true by default)
ICompareSingleConfiguration UseHashtable(bool use = true);Defines minimum number of entries in collection to use hashtable (15 by default)
ICompareSingleConfiguration HashtableThreshold(int threshold = 15);Choose which equality comparer engine will use to compare keys and values (Precompiled by default)
ICompareSingleConfiguration SetEqualityComparer(EqualityComparers equalityComparer = EqualityComparers.Precompiled)When set to true, engine will use parallelism to compare entities (false by default)
ICompareSingleConfiguration UseParallelism(bool use = false);When set to true, hashtable will be used when searching in a collection of entities with a minimum HashtableThreshold (15 by default) entries (true by default)
ICompareManyConfiguration UseHashtable(bool use = true);Defines minimum number of entries in collection to use hashtable (15 by default)
ICompareManyConfiguration HashtableThreshold(int threshold = 15);Choose which equality comparer engine will use to compare keys and values (Precompiled by default)
ICompareManyConfiguration SetEqualityComparer(EqualityComparers equalityComparer = EqualityComparers.Precompiled)When set to true, engine will use parallelism to compare entities (false by default)
ICompareManyConfiguration UseParallelism(bool use = false);Defines a listener which will be called on every insert/update/delete detection
void OnDelete(string entityName, Func<Dictionary<string, object>> getKeysFunc);void OnInsert(string entityName, Func<Dictionary<string, object>> getKeysFunc);void OnUpdate(string entityName, string propertyName, Func<Dictionary<string, object>> getKeysFunc, Func<object> getOriginalValueFunc, Func<object> getNewValueFunc);Create an entity configuration
IEntityConfiguration<TEntity> Entity<TEntity>()Add diff profile
IDeepDiffConfiguration AddProfile<TProfile>()
IDeepDiffConfiguration AddProfile(DiffProfile diffProfile)Scan assemblies and add diff profile found in those assemblies
IDeepDiffConfiguration AddProfiles(params Assembly[] assembliesToScan)Create DeepDiff engine (also validate configuration)
IDeepDiff CreateDeepDiff()Validate entity configurations
void ValidateConfiguration()Check if every properties found in configured entities are used in configuration, use Ignore to add properties to ignore in this validation
void ValidateIfEveryPropertiesAreReferenced()