bo/AppServer/Data/Repository/MetadocumentRepo.cs

using System.Linq;
using BO.AppServer.Data.Entity;
using Quadarax.Foundation.Core.Data;
using Quadarax.Foundation.Core.Data.Domain;
using Quadarax.Foundation.Core.Data.Interface.Domain;
using Quadarax.Foundation.Core.Data.Repository;

public class MetadocumentRepo : EntityRepository<long,  Metadocument>
    {
        public MetadocumentRepo(IUnitOfWork<DataDomain> unitOfWork) : base(unitOfWork)
        {
        }


        public Metadocument Get(long workspaceId, long metadocumentId)
        {
            var document = Get(metadocumentId);
            if (document == null)
                return null;
            if (document.Structure.WorkspaceId != workspaceId)
                return null;
            return document;

        }

        public Artifact GetArtifact(long metadocumentId, long artifactId)
        {
            return Query(new Paging()).Where(x => x.Id == metadocumentId)
                .SelectMany(x => x.Artifacts).FirstOrDefault(x => x.Id == artifactId);
        }
    }