lucaslorentz / auto-compute / 11755625072

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11755625072

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lucaslorentz 
Add initial support for computed navigations and observers

159 of 359 new or added lines in 22 files covered. (44.29%)

41 existing lines in 7 files now uncovered.

1459 of 1825 relevant lines covered (79.95%)

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0.0
/src/LLL.AutoCompute.EFCore/Metadata/Internal/ComputedNavigation.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 class ComputedNavigation<TEntity, TProperty>(










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    INavigationBase navigation,










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    IUnboundChangesProvider<IEFCoreComputedInput, TEntity, TProperty> changesProvider











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) : Computed(changesProvider)




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    where TEntity : class










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{











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    public new IUnboundChangesProvider<IEFCoreComputedInput, TEntity, TProperty> ChangesProvider => changesProvider;




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    public INavigationBase Navigation => navigation;




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    public override string ToDebugString()










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    {











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        return Navigation.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 navigationEntry = entityEntry.Navigation(Navigation);




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            var newValue = ChangesProvider.ChangeCalculation.IsIncremental




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                ? ChangesProvider.ChangeCalculation.ApplyChange(




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                    GetOriginalValue(navigationEntry),




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                    change)




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                : change;




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




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            {











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                navigationEntry.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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    private static TProperty GetOriginalValue(NavigationEntry navigationEntry)










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    {











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        if (navigationEntry.EntityEntry.State == EntityState.Added)




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            return default!;




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        return (TProperty)navigationEntry.GetOriginalValue()!;




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    }










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}
























    

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