A possible bug

src/NHibernate.Test/NHSpecificTest/NHNewBug/Child.cs

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+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace NHibernate.Test.NHSpecificTest.NHNewBug
+{
+	public class Child
+	{
+		private int id;
+		public virtual int Id
+		{
+			get { return id; }
+			set { id = value; }
+		}
+	}
+}

src/NHibernate.Test/NHSpecificTest/NHNewBug/ContainedChild.cs

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+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using NHibernate.UserTypes;
+
+namespace NHibernate.Test.NHSpecificTest.NHNewBug
+{
+	public class ContainedChild
+	{
+		private int id;
+		public virtual int Id
+		{
+			get { return id; }
+			set { id = value; }
+		}
+		private Child child;
+
+		public ContainedChild()
+		{
+		}
+
+		public ContainedChild(Child child)
+		{
+			this.child = child;
+		}
+
+		public virtual Child Child
+		{
+			get { return child; }
+			set { child = value; }
+		}
+	}
+}

src/NHibernate.Test/NHSpecificTest/NHNewBug/ManyToOneFixture.cs

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+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+using NUnit.Framework;
+
+/* 项目“NHibernate.Test (net48)”的未合并的更改
+在此之前:
+using NHibernate.Test.NHSpecificTest;
+在此之后:
+using NHibernate.Test.NHSpecificTest;
+using NHibernate;
+using NHibernate.Test;
+using NHibernate.Test.MappingTest;
+using NHibernate.Test.NHSpecificTest.NHNewBug;
+*/
+using NHibernate.Test.NHSpecificTest;
+
+namespace NHibernate.Test.NHSpecificTest.NHNewBug
+{
+
+
+
+
+
+
+
+	[TestFixture]
+	internal class ManyToOneFixture : BugTestCase
+	{
+		[Test]
+		public void AccessIdOfManyToOneInEmbeddable()
+		{
+			ISession s = OpenSession();
+			ITransaction t = s.BeginTransaction();
+			Parent p = new Parent();
+			p.ContainedChildren.Add(new ContainedChild(new Child()));
+			s.Persist(p);
+			t.Commit();
+			var list = s.CreateQuery("from Parent p join p.ContainedChildren c where c.Child.Id is not null").List();
+			Assert.AreNotEqual(0, list.Count);
+			s.Delete(p);
+			t.Commit();
+			s.Close();
+		}
+	}
+}

src/NHibernate.Test/NHSpecificTest/NHNewBug/Mappings.hbm.xml

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+<?xml version="1.0" encoding="utf-8" ?>
+<hibernate-mapping xmlns="urn:nhibernate-mapping-2.2"
+                   assembly="NHibernate.Test"
+                   namespace="NHibernate.Test.NHSpecificTest.NHNewBug">
+
+  <class name="Child">
+    <id name="Id">
+      <generator class="native" />
+    </id>
+  </class>
+
+  <class name="ContainedChild">
+    <id name="Id">
+      <generator class="native" />
+    </id>
+    <many-to-one name="Child" cascade="all" not-null="true" />
+  </class>
+
+  <class name="Parent">
+		<id name="Id">
+			<generator class="native"/>
+		</id>
+    <many-to-one name="ContainedChild" cascade="all"  />
+    <set name="ContainedChildren" inverse="true" cascade="all">
+      <key column="Parent" />
+      <one-to-many class="ContainedChild" />
+    </set>
+  </class>
+
+
+</hibernate-mapping>

src/NHibernate.Test/NHSpecificTest/NHNewBug/Parent.cs

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+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace NHibernate.Test.NHSpecificTest.NHNewBug
+{
+	public class Parent
+	{
+		private int id;
+		private ContainedChild containedChild;
+		private ISet<ContainedChild> containedChildren = new HashSet<ContainedChild>();
+
+		public virtual int Id
+		{
+			get { return id; }
+			set { id = value; }
+		}
+
+		public virtual ContainedChild ContainedChild
+		{
+			get { return containedChild; }
+			set { containedChild = value; }
+		}
+		public virtual ISet<ContainedChild> ContainedChildren
+		{
+			get { return containedChildren; }
+			set { containedChildren = value; }
+		}
+	}
+}