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38 lines
1.4 KiB
C#
38 lines
1.4 KiB
C#
using System;
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using System.Collections.Generic;
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using System.Linq;
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using System.Text;
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using System.Linq.Expressions;
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namespace Marr.Data
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{
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/// <summary>
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/// This utility class allows you to join two existing entity collections.
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/// </summary>
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public class EntityMerger
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{
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/// <summary>
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/// Joines to existing entity collections.
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/// </summary>
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/// <typeparam name="TParent">The parent entity type.</typeparam>
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/// <typeparam name="TChild">The child entity type.</typeparam>
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/// <param name="parentList">The parent entities.</param>
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/// <param name="childList">The child entities</param>
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/// <param name="relationship">A predicate that defines the relationship between the parent and child entities. Returns true if they are related.</param>
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/// <param name="mergeAction">An action that adds a related child to the parent.</param>
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public static void Merge<TParent, TChild>(IEnumerable<TParent> parentList, IEnumerable<TChild> childList, Func<TParent, TChild, bool> relationship, Action<TParent, TChild> mergeAction)
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{
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foreach (TParent parent in parentList)
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{
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foreach (TChild child in childList)
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{
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if (relationship(parent, child))
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{
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mergeAction(parent, child);
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}
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}
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}
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}
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}
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}
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