Lazily creates the static queries instead of eagerly, this fixes an issue of if these services are accessed before Umbraco has booted

src/Umbraco.Core/Persistence/Repositories/ContentRepository.cs

@@ -94,13 +94,7 @@ namespace Umbraco.Core.Persistence.Repositories
             return ProcessQuery(sql);
         }
 
-        #endregion
-
-        #region Static Queries
-
-        private readonly IQuery<IContent> _publishedQuery = Query<IContent>.Builder.Where(x => x.Published == true);
-
-        #endregion
+        #endregion        
 
         #region Overrides of PetaPocoRepositoryBase<IContent>
 

src/Umbraco.Core/Services/ContentService.cs

@@ -58,7 +58,7 @@ namespace Umbraco.Core.Services
 
         #region Static Queries
 
-        private readonly IQuery<IContent> _notTrashedQuery = Query<IContent>.Builder.Where(x => x.Trashed == false);
+        private IQuery<IContent> _notTrashedQuery;
 
         #endregion
 
@@ -793,6 +793,12 @@ namespace Umbraco.Core.Services
         /// <returns></returns>
         internal IEnumerable<IContent> GetAllPublished()
         {
+            //create it once if it is needed (no need for locking here)
+            if (_notTrashedQuery == null)
+            {
+                _notTrashedQuery = Query<IContent>.Builder.Where(x => x.Trashed == false);
+            }
+
             using (var repository = RepositoryFactory.CreateContentRepository(UowProvider.GetUnitOfWork()))
             {
                 return repository.GetByPublishedVersion(_notTrashedQuery);

src/Umbraco.Core/Services/EntityService.cs

@@ -64,7 +64,7 @@ namespace Umbraco.Core.Services
 
         #region Static Queries
 
-        private readonly IQuery<IUmbracoEntity> _rootEntityQuery = Query<IUmbracoEntity>.Builder.Where(x => x.ParentId == -1);
+        private IQuery<IUmbracoEntity> _rootEntityQuery;
 
         #endregion
 
@@ -392,6 +392,12 @@ namespace Umbraco.Core.Services
         /// <returns>An enumerable list of <see cref="IUmbracoEntity"/> objects</returns>
         public virtual IEnumerable<IUmbracoEntity> GetRootEntities(UmbracoObjectTypes umbracoObjectType)
         {
+            //create it once if it is needed (no need for locking here)
+            if (_rootEntityQuery == null)
+            {
+                _rootEntityQuery = Query<IUmbracoEntity>.Builder.Where(x => x.ParentId == -1);
+            }
+
             var objectTypeId = umbracoObjectType.GetGuid();
             using (var repository = RepositoryFactory.CreateEntityRepository(UowProvider.GetUnitOfWork()))
             {