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Ability to select entities in Criteria API projections
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‎src/NHibernate.Test/Async/NHSpecificTest/GH948/FixtureByCode.cs

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//------------------------------------------------------------------------------
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// <auto-generated>
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// This code was generated by AsyncGenerator.
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//
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// Changes to this file may cause incorrect behavior and will be lost if
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// the code is regenerated.
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// </auto-generated>
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//------------------------------------------------------------------------------
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using NHibernate.Cfg.MappingSchema;
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using NHibernate.Criterion;
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using NHibernate.Mapping.ByCode;
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using NHibernate.SqlCommand;
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using NHibernate.Transform;
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using NUnit.Framework;
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namespace NHibernate.Test.NHSpecificTest.GH948
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{
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using System.Threading.Tasks;
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[TestFixture]
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public class ByCodeFixtureAsync : TestCaseMappingByCode
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{
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private EntityWithCompositeId _entityWithCompositeId;
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protected override HbmMapping GetMappings()
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{
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var mapper = new ModelMapper();
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mapper.Class<EntityComplex>(rc =>
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{
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rc.Id(x => x.Id, m => m.Generator(Generators.GuidComb));
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rc.Version(ep => ep.Version, vm => { });
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rc.Property(x => x.Name);
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rc.Property(ep => ep.LazyProp, m => m.Lazy(true));
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rc.ManyToOne(ep => ep.Child1, m => m.Column("Child1Id"));
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rc.ManyToOne(ep => ep.Child2, m => m.Column("Child2Id"));
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rc.ManyToOne(ep => ep.SameTypeChild, m => m.Column("SameTypeChildId"));
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rc.Bag(ep => ep.ChildrenList, m =>
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{
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m.Cascade(Mapping.ByCode.Cascade.All);
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m.Inverse(true);
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}, a => a.OneToMany());
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});
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mapper.Class<EntitySimpleChild>(rc =>
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{
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rc.Id(x => x.Id, m => m.Generator(Generators.GuidComb));
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rc.Property(x => x.Name);
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});
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mapper.Class<EntityWithCompositeId>(
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rc =>
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{
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rc.ComponentAsId(
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e => e.Key,
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ekm =>
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{
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ekm.Property(ek => ek.Id1);
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ekm.Property(ek => ek.Id2);
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});
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rc.Property(e => e.Name);
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});
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return mapper.CompileMappingForAllExplicitlyAddedEntities();
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}
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protected override void OnTearDown()
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{
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using (ISession session = OpenSession())
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using (ITransaction transaction = session.BeginTransaction())
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{
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session.Delete("from System.Object");
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session.Flush();
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transaction.Commit();
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}
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}
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protected override void OnSetUp()
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{
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using (var session = OpenSession())
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using (var transaction = session.BeginTransaction())
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{
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var child1 = new EntitySimpleChild
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{
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Name = "Child1"
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};
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var child2 = new EntitySimpleChild
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{
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Name = "Child1"
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};
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var parent = new EntityComplex
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{
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Name = "ComplexEnityParent",
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Child1 = child1,
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Child2 = child2,
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LazyProp = "SomeBigValue",
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SameTypeChild = new EntityComplex() { Name = "ComplexEntityChild" }
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};
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_entityWithCompositeId = new EntityWithCompositeId
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{
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Key = new CompositeKey
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{
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Id1 = 1,
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Id2 = 2
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},
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Name = "Composite"
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};
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session.Save(child1);
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session.Save(child2);
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session.Save(parent.SameTypeChild);
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session.Save(parent);
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session.Save(_entityWithCompositeId);
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session.Flush();
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transaction.Commit();
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}
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}
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[Test]
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public async Task RootEntityProjectionFullyInitializedAndWithUnfetchedLazyPropertiesByDefaultAsync()
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{
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using(var sqlLog = new SqlLogSpy())
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using (var session = OpenSession())
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{
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Sfi.Statistics.Clear();
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EntityComplex entitypRoot = await (session
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.QueryOver<EntityComplex>()
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.Where(ec => ec.LazyProp != null)
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.Select(Projections.RootEntity())
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.Take(1).SingleOrDefaultAsync());
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Assert.That(NHibernateUtil.IsInitialized(entitypRoot),Is.True, "Object must be initialized by default");
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Assert.That(session.IsReadOnly(entitypRoot),Is.False, "Object must not be readonly by default");
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Assert.That(NHibernateUtil.IsPropertyInitialized(entitypRoot, nameof(entitypRoot.LazyProp)), Is.False, "Lazy properties should not be initialized by default.");
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Assert.That(sqlLog.Appender.GetEvents().Length, Is.EqualTo(1), "Only one SQL select is expected");
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}
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}
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[Test]
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public async Task RootEntityProjectionLazyAsync()
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{
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using (var session = OpenSession())
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{
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EntityComplex entitypRoot = await (session
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.QueryOver<EntityComplex>()
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.Select(Projections.RootEntity().SetLazy(true))
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.Take(1).SingleOrDefaultAsync());
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Assert.That(NHibernateUtil.IsInitialized(entitypRoot),Is.False, "Object must be lazy loaded.");
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}
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}
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[Test]
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public async Task AliasedEntityProjectionAsync()
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{
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using (var sqlLog = new SqlLogSpy())
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using (var session = OpenSession())
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{
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EntitySimpleChild child1 = null;
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child1 = await (session
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.QueryOver<EntityComplex>()
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.JoinAlias(ep => ep.Child1, () => child1)
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.Select(Projections.Entity(() => child1))
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.Take(1).SingleOrDefaultAsync<EntitySimpleChild>());
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Assert.That(child1, Is.Not.Null);
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Assert.That(NHibernateUtil.IsInitialized(child1), Is.True, "Object must be initialized");
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Assert.That(sqlLog.Appender.GetEvents().Length, Is.EqualTo(1), "Only one SQL select is expected");
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}
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}
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[Test]
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public async Task MultipleLazyEntityProjectionsAsync()
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{
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using (var session = OpenSession())
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{
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EntitySimpleChild child1 = null;
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EntityComplex root = null;
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EntityComplex sameTypeChild = null;
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EntitySimpleChild child2 = null;
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var result = await (session
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.QueryOver(() => root)
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.JoinAlias(ep => ep.SameTypeChild, () => sameTypeChild)
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.JoinAlias(ep => ep.Child1, () => child1)
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.JoinAlias(ep => ep.Child2, () => child2)
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.Select(
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Projections.RootEntity().SetLazy(true),
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Projections.Entity(() => child1).SetLazy(true),
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Projections.Entity(() => sameTypeChild).SetLazy(true),
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Projections.Entity(() => child2).SetLazy(true)
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)
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.Take(1).SingleOrDefaultAsync<object[]>());
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root = (EntityComplex) result[0];
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child1 = (EntitySimpleChild) result[1];
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sameTypeChild = (EntityComplex) result[2];
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child2 = (EntitySimpleChild) result[3];
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Assert.That(NHibernateUtil.IsInitialized(root), Is.False, "Object must be lazy loaded.");
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Assert.That(NHibernateUtil.IsInitialized(sameTypeChild), Is.False, "Object must be lazy loaded.");
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Assert.That(NHibernateUtil.IsInitialized(child1), Is.False, "Object must be lazy loaded.");
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Assert.That(NHibernateUtil.IsInitialized(child2), Is.False, "Object must be lazy loaded.");
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//make sure objects are populated from different aliases for the same types
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Assert.That(root.Id , Is.Not.EqualTo(sameTypeChild.Id), "Different objects are expected.");
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Assert.That(child1.Id , Is.Not.EqualTo(child2.Id), "Different objects are expected.");
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}
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}
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[Test]
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public async Task EntityProjectionWithLazyPropertiesFetchedAsync()
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{
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using (var session = OpenSession())
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{
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EntityComplex entitypRoot = await (session
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.QueryOver<EntityComplex>()
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.Where(ec => ec.LazyProp != null)
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.Select(Projections.RootEntity().SetAllPropertyFetch(true))
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.Take(1).SingleOrDefaultAsync());
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Assert.That(entitypRoot, Is.Not.Null);
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Assert.That(NHibernateUtil.IsInitialized(entitypRoot), Is.True, "Object must be initialized");
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Assert.That(NHibernateUtil.IsPropertyInitialized(entitypRoot, nameof(entitypRoot.LazyProp)), Is.True, "Lazy property must be initialized");
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}
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}
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[Test]
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public async Task NullEntityProjectionAsync()
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{
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using (var session = OpenSession())
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{
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EntitySimpleChild child1 = null;
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child1 = await (session
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.QueryOver<EntityComplex>()
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.JoinAlias(ep => ep.Child1, () => child1, JoinType.LeftOuterJoin)
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.Where(() => child1.Id == null)
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.Select(Projections.Entity(() => child1))
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.Take(1).SingleOrDefaultAsync<EntitySimpleChild>());
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Assert.That(child1, Is.Null);
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}
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}
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[Test]
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public async Task MultipleEntitiesProjectionsAsync()
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{
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using (var sqlLog = new SqlLogSpy())
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using (var session = OpenSession())
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{
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EntityComplex root = null;
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EntitySimpleChild child1 = null;
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EntitySimpleChild child2 = null;
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EntityComplex sameAsRootChild = null;
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EntitySimpleChild nullListElem = null;
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var objects = await (session
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.QueryOver<EntityComplex>()
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.JoinAlias(ep => ep.Child1, () => child1)
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.JoinAlias(ep => ep.Child2, () => child2)
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.JoinAlias(ep => ep.SameTypeChild, () => sameAsRootChild)
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.JoinAlias(ep => ep.ChildrenList, () => nullListElem, JoinType.LeftOuterJoin)
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.Select(
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Projections.RootEntity(),
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Projections.Entity(() => child1),
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Projections.Entity(() => child2),
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Projections.Entity(() => sameAsRootChild),
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Projections.Entity(() => nullListElem)
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)
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.Take(1).SingleOrDefaultAsync<object[]>());
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root = (EntityComplex) objects[0];
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child1 = (EntitySimpleChild) objects[1];
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child2 = (EntitySimpleChild) objects[2];
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sameAsRootChild = (EntityComplex) objects[3];
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nullListElem = (EntitySimpleChild) objects[4];
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Assert.That(NHibernateUtil.IsInitialized(root), Is.True, "Object must be initialized");
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Assert.That(NHibernateUtil.IsInitialized(child1), Is.True, "Object must be initialized");
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Assert.That(NHibernateUtil.IsInitialized(child2), Is.True, "Object must be initialized");
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Assert.That(NHibernateUtil.IsInitialized(sameAsRootChild), Is.True, "Object must be initialized");
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Assert.That(nullListElem, Is.Null, "Object must be initialized");
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Assert.That(sqlLog.Appender.GetEvents().Length, Is.EqualTo(1), "Only one SQL select is expected");
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}
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}
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class MultipleEntitiesResult
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{
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public EntityComplex Root { get; set; }
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public EntitySimpleChild Child1 { get; set; }
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public EntitySimpleChild Child2 { get; set; }
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public EntityComplex SameAsRootChild { get; set; }
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public EntitySimpleChild NullListElem { get; set; }
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}
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[Test]
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public async Task MultipleEntitiesProjectionsToResultTransformerAsync()
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{
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using (var sqlLog = new SqlLogSpy())
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using (var session = OpenSession())
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{
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MultipleEntitiesResult result = new MultipleEntitiesResult();
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EntityComplex root = null;
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EntitySimpleChild child1 = null;
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EntitySimpleChild child2 = null;
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EntityComplex sameAsRootChild = null;
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EntitySimpleChild nullListElem = null;
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var r = await (session
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.QueryOver<EntityComplex>()
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.JoinAlias(ep => ep.Child1, () => child1)
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.JoinAlias(ep => ep.Child2, () => child2)
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.JoinAlias(ep => ep.SameTypeChild, () => sameAsRootChild)
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.JoinAlias(ep => ep.ChildrenList, () => nullListElem, JoinType.LeftOuterJoin)
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.Select(
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Projections.Alias(Projections.RootEntity(), nameof(result.Root)),
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Projections.Entity(() => child1),
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Projections.Entity(() => child2),
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Projections.Entity(() => sameAsRootChild),
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Projections.Entity(() => nullListElem)
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)
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.TransformUsing(Transformers.AliasToBean<MultipleEntitiesResult>())
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.Take(1)
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.SingleOrDefaultAsync<MultipleEntitiesResult>());
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Assert.That(NHibernateUtil.IsInitialized(r.Root), Is.True, "Object must be initialized");
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Assert.That(NHibernateUtil.IsInitialized(r.Child1), Is.True, "Object must be initialized");
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Assert.That(NHibernateUtil.IsInitialized(r.Child2), Is.True, "Object must be initialized");
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Assert.That(NHibernateUtil.IsInitialized(r.SameAsRootChild), Is.True, "Object must be initialized");
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Assert.That(r.NullListElem, Is.Null, "Object must be initialized");
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Assert.That(sqlLog.Appender.GetEvents().Length, Is.EqualTo(1), "Only one SQL select is expected");
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}
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}
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[Test]
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public async Task ReadOnlyProjectionAsync()
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{
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using (var session = OpenSession())
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{
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EntityComplex entitypRoot = await (session
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.QueryOver<EntityComplex>()
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.Select(Projections.RootEntity().SetReadonly(true))
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.Take(1).SingleOrDefaultAsync());
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Assert.That(session.IsReadOnly(entitypRoot), Is.True, "Object must be loaded readonly.");
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}
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}
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[Test]
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public async Task EntityProjectionForCompositeKeyInitializedAsync()
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{
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using (var sqlLog = new SqlLogSpy())
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using (var session = OpenSession())
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{
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var composite = await (session
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.QueryOver<EntityWithCompositeId>()
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.Select(Projections.RootEntity())
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.Take(1).SingleOrDefaultAsync());
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Assert.That(composite, Is.Not.Null);
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Assert.That(NHibernateUtil.IsInitialized(composite), Is.True, "Object must be initialized");
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Assert.That(composite, Is.EqualTo(_entityWithCompositeId).Using((EntityWithCompositeId x, EntityWithCompositeId y) => (Equals(x.Key, y.Key) && Equals(x.Name, y.Name)) ? 0 : 1));
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Assert.That(sqlLog.Appender.GetEvents().Length, Is.EqualTo(1), "Only one SQL select is expected");
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}
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}
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[Test]
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public async Task EntityProjectionForCompositeKeyLazyAsync()
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{
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using (var session = OpenSession())
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{
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var composite = await (session
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.QueryOver<EntityWithCompositeId>()
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.Select(Projections.RootEntity().SetLazy(true))
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.Take(1).SingleOrDefaultAsync());
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Assert.That(composite, Is.Not.Null);
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Assert.That(composite, Is.EqualTo(_entityWithCompositeId).Using((EntityWithCompositeId x, EntityWithCompositeId y) => (Equals(x.Key, y.Key)) ? 0 : 1));
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Assert.That(NHibernateUtil.IsInitialized(composite), Is.False, "Object must be lazy loaded.");
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}
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}
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}
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}

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