lucaslorentz / auto-compute / 11758855041

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11758855041

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lucaslorentz 
Add initial support for computed navigations and observers

166 of 431 new or added lines in 25 files covered. (38.52%)

41 existing lines in 7 files now uncovered.

1466 of 1897 relevant lines covered (77.28%)

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0.0
/src/LLL.AutoCompute.EFCore/Metadata/Internal/ComputedReaction.cs
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using LLL.AutoCompute.EFCore.Internal;
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using Microsoft.EntityFrameworkCore;
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using Microsoft.EntityFrameworkCore.ChangeTracking;
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using Microsoft.EntityFrameworkCore.Metadata;
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namespace LLL.AutoCompute.EFCore.Metadata.Internal;










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public abstract class ComputedReaction(










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    IPropertyBase property,










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    IUnboundChangesProvider changesProvider











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) : Computed(changesProvider)




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{











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    public IPropertyBase Property => property;




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}










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public class ComputedReaction<TEntity, TProperty, TChange>(










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    IPropertyBase property,










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    IUnboundChangesProvider<IEFCoreComputedInput, TEntity, TChange> changesProvider,










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    Func<TProperty, TChange, TProperty> applyChange











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) : ComputedReaction(property, changesProvider)




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    where TEntity : class










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{










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    public override string ToDebugString()










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    {











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        return Property.ToString()!;




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    }










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    public override async Task<int> Update(DbContext dbContext)










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    {











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        var numberOfUpdates = 0;




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        var input = dbContext.GetComputedInput();




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        var changes = await changesProvider.GetChangesAsync(input, null);




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        foreach (var (entity, change) in changes)




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        {











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            var entityEntry = dbContext.Entry(entity);




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            var memberEntry = entityEntry.Member(Property);




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            if (memberEntry is NavigationEntry navigationEntry)




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                await navigationEntry.LoadAsync();




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            var newValue = applyChange(




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                (TProperty)memberEntry.CurrentValue!,




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                change);




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            if (!Equals(memberEntry.CurrentValue, newValue))




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            {











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                memberEntry.CurrentValue = newValue;




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                numberOfUpdates++;




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            }










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        }











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        return numberOfUpdates;




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    }










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}
























    

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