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Adding GetDiffGeneric for BindingModel collections
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@cgoconseils
cgoconseils authored Jan 24, 2024
1 parent 63d3fc3 commit c9a6bab
Showing 1 changed file with 30 additions and 38 deletions.
68 changes: 30 additions & 38 deletions src/XrmFramework/Extensions/BindingModelExtensions.cs
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Original file line number Diff line number Diff line change
@@ -1,4 +1,4 @@
// Copyright (c) Christophe Gondouin (CGO Conseils). All rights reserved.
// Copyright (c) Christophe Gondouin (CGO Conseils). All rights reserved.
// Licensed under the MIT License. See License.txt in the project root for license information.

using System;
Expand All @@ -15,38 +15,36 @@ public static class BindingModelExtensions
{

public static T GetDiffGeneric<T>(this T source, T target) where T : IBindingModel, new()
{
return (T)GetDiff(source, target);
}
=> (T)GetDiff(source, target);

public static IEnumerable<IBindingModel> GetDiff<T>(this IEnumerable<T> sourceList, IEnumerable<T> targetEnumerable, IEqualityComparer<IBindingModel> comparer = null) where T : IBindingModel
{
return GetDiff(sourceList.Cast<IBindingModel>(), targetEnumerable.Cast<IBindingModel>(), typeof(T), comparer);
}
public static IEnumerable<T> GetDiffGeneric<T>(this IEnumerable<T> sourceList, IEnumerable<T> targetEnumerable, IEqualityComparer<IBindingModel> comparer = null) where T : IBindingModel, new()
=> sourceList.GetDiff(targetEnumerable, comparer);

public static IEnumerable<IBindingModel> GetDiff(this IEnumerable<IBindingModel> sourceList, IEnumerable<IBindingModel> targetEnumerable, Type modelType, IEqualityComparer<IBindingModel> comparer = null)
private static IEnumerable<T> GetDiff<T>(this IEnumerable<T> sourceList, IEnumerable<T> targetEnumerable, IEqualityComparer<IBindingModel> comparer = null) where T : IBindingModel
=> GetDiff(sourceList.Cast<IBindingModel>(), targetEnumerable.Cast<IBindingModel>(), typeof(T), comparer).Cast<T>();

private static IEnumerable<IBindingModel> GetDiff(this IEnumerable<IBindingModel> sourceList, IEnumerable<IBindingModel> targetEnumerable, Type modelType, IEqualityComparer<IBindingModel> comparer = null)
{
var metadata = EntityMetadata.GetMetadata(modelType);
comparer ??= new KeyEqualityComparer(modelType);

comparer = comparer ?? new KeyEqualityComparer(modelType);
var targetList = targetEnumerable.ToList();

var targetList = targetEnumerable as IList<IBindingModel> ?? targetEnumerable.ToList();
var objectsToUpsert = sourceList.Except(targetList, new DeepModelEqualityComparer(modelType));
var sourceBindingModels = sourceList.ToList();
var objectsToUpsert = sourceBindingModels.Except(targetList, new DeepModelEqualityComparer(modelType));

foreach (var obj in objectsToUpsert)
{
var existingObject = targetList.SingleOrDefault(o => comparer.Equals(obj, o));
var objectsToUpdate =
objectsToUpsert
.Join(
targetList, o => o, o => o,
(obj, existingObject) =>
GetDiff(obj, existingObject), comparer);

if (!metadata.IsValidForCreate && existingObject == null)
{
continue;
}
var objectsToCreate = sourceBindingModels.Except(targetList, comparer);

yield return existingObject == null ? obj : GetDiff(obj, existingObject);
}
return objectsToUpdate.Union(objectsToCreate);
}

public static IBindingModel GetDiff(this IBindingModel source, IBindingModel target)
private static IBindingModel GetDiff(this IBindingModel source, IBindingModel target)
{
if (target == null)
{
Expand All @@ -68,12 +66,9 @@ public static IBindingModel GetDiff(this IBindingModel source, IBindingModel tar

foreach (var attribute in metadata.CrmAttributes.Where(a => a.CrmMapping.IsValidForUpdate))
{
if (source is BindingModelBase)
if (source is BindingModelBase @base && !@base.InitializedProperties.Contains(attribute.PropertyName))
{
if (!((BindingModelBase)source).InitializedProperties.Contains(attribute.PropertyName))
{
continue;
}
continue;
}

var valueSource = attribute.Property.GetValue(source);
Expand Down Expand Up @@ -140,7 +135,7 @@ public static void CopyField<TInput, TOutput>(this TInput input, TOutput output,

private static void CopyFieldInternal<TInput, TOutput>(TInput input, TOutput output, PropertyInfo sourceProperty, PropertyInfo targetProperty, Type converterType) where TInput : BindingModelBase where TOutput : IBindingModel
{
if (sourceProperty == null || targetProperty == null || input.InitializedProperties.Contains(sourceProperty.Name) == false)
if (sourceProperty == null || targetProperty == null || !input.InitializedProperties.Contains(sourceProperty.Name))
{
return;
}
Expand All @@ -166,7 +161,7 @@ private static void CopyFieldInternal<TInput, TOutput>(TInput input, TOutput out

foreach (var element in (IEnumerable)sourceValue)
{
addMethod?.Invoke(collection, new[] { element });
addMethod.Invoke(collection, new[] { element });
}
}
else
Expand All @@ -191,23 +186,23 @@ private static PropertyInfo GetPropertyInfo<T>(Expression<Func<T, object>> prope

public class KeyEqualityComparer : IEqualityComparer<IBindingModel>
{
private PropertyInfo PropertyInfo { get; }

private EntityMetadata Metadata { get; }

private bool HasPreferedKey { get; }
internal IEnumerable<AttributeMetadata> Properties { get; }

public KeyEqualityComparer(Type modelType)
{
Metadata = EntityMetadata.GetMetadata(modelType);
HasPreferedKey = Metadata.HasPreferedKey;
Properties = Metadata.CrmAttributes.Where(a => (a.IsKey && !HasPreferedKey) || (HasPreferedKey && a.IsPreferedKey));
}

public bool Equals(IBindingModel x, IBindingModel y)
{
var equals = true;

foreach (var attributeMetada in Metadata.CrmAttributes.Where(a => (a.IsKey && !HasPreferedKey) || (HasPreferedKey && a.IsPreferedKey)))
foreach (var attributeMetada in Properties)
{
var valueX = attributeMetada.Property.GetValue(x);
var valueY = attributeMetada.Property.GetValue(y);
Expand All @@ -228,9 +223,8 @@ public int GetHashCode(IBindingModel obj)
{
int hashCode = 0;

foreach (var attributeMetada in Metadata.CrmAttributes.Where(a => (a.IsKey && !HasPreferedKey) || (HasPreferedKey && a.IsPreferedKey)))
foreach (var attributeMetada in Properties)
{

hashCode ^= attributeMetada.Property.GetValue(obj)?.GetHashCode() ?? 0;
}
return hashCode;
Expand Down Expand Up @@ -302,7 +296,7 @@ public class ModelEqualityComparer<T> : IEqualityComparer<T> where T : IBindingM
{
public bool Equals(T x, T y)
{
return x.Id == y.Id;
return x?.Id == y?.Id;
}

public int GetHashCode(T obj)
Expand All @@ -313,8 +307,6 @@ public int GetHashCode(T obj)

public class DeepModelEqualityComparer : IEqualityComparer<IBindingModel>
{
//private IList<PropertyInfo> Properties { get; set; }

private EntityMetadata Metadata { get; }

public DeepModelEqualityComparer(Type modelType)
Expand Down

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