ItemsLookup.cs

namespace MyProject.Pipelines
{
    public class ItemsLookup : HttpRequestProcessor
    {
        public override void Process(HttpRequestArgs args)
        {
            // Shared Data Folder
            Context.Items.SetLazy(MultisiteConstants.SharedDataFolderItem, () => 
                Context.Database.GetItem(new ID(MultisiteConstants.SharedDataFolderId))
            );

                // Shared Configurations Item
                Context.Items.SetLazy(MultisiteConstants.SharedDataConfigurationItem, () =>
                    GetItemByName(MultisiteConstants.ConfigurationsItemName, Context.Items.Get(MultisiteConstants.SharedDataFolderItem))
                );

                // Shared Global Item
                Context.Items.SetLazy(MultisiteConstants.SharedDataGlobalItem, () =>
                    GetItemByName(MultisiteConstants.GlobalItemName, Context.Items.Get(MultisiteConstants.SharedDataFolderItem))
                );

            // Website Root
            Context.Items.SetLazy(MultisiteConstants.RootItem, () => Context.Database.Items[Context.Site.RootPath]);

            // Home Item
            Context.Items.SetLazy(MultisiteConstants.HomeItem, () => Context.Database.Items[Context.Site.StartPath]);

            // Local Configurations Item
            Context.Items.SetLazy(MultisiteConstants.LocalConfigurationsItem, () =>
                GetItemByName(MultisiteConstants.ConfigurationsItemName, Context.Items.Get(MultisiteConstants.RootItem))
            );

                // Local Copyright Settings Item
                Context.Items.SetLazy(MultisiteConstants.LocalCopyrightSettingsItem, () =>
                     GetItemByTemplateId(Templates.CopyrightSettings.ID, Context.Items.Get(MultisiteConstants.LocalConfigurationsItem))
                );

            // Local Global Item
            Context.Items.SetLazy(MultisiteConstants.LocalGlobalItem, () =>
                GetItemByName(MultisiteConstants.GlobalItemName, Context.Items.Get(MultisiteConstants.RootItem))
            );
        }

        public static Item GetItemByName(string name, Item parentItem)
        {
            if (parentItem == null)
            {
                Log.Warn(string.Format("Unable to retrieve item by name: {0}, parentItem is null.", name), new object());
                return null;
            }

            return parentItem.GetChildren()
                   .FirstOrDefault(i => i.Name == name);
        }

        public static Item GetItemByTemplateId(ID templateId, Item parentItem)
        {
            if (parentItem == null)
            {
                Log.Warn(string.Format("Unable to retrieve item by template id: {0}, parentItem is null.", templateId.ToString()), new object());
                return null;
            }

            return parentItem.GetChildren()
                   .FirstOrDefault(i => i.TemplateID == templateId);
        }
    }
}