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Lidarr/src/Marr.Data/EntityMerger.cs

35 lines
1.4 KiB

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