For NH-1262: Ported cascade delete orphans functionality for one-to-one mappings from Hibernate to NHibernate.

Author: mickfold

src/NHibernate.Test/NHSpecificTest/NH1262/fk/bidirectional/DeleteOneToOneOrphansTest.cs

@@ -0,0 +1,79 @@
+using NUnit.Framework;
+
+namespace NHibernate.Test.NHSpecificTest.NH1262.fk.bidirectional
+{
+	[TestFixture]
+	public class DeleteOneToOneOrphansTest : BugTestCase
+	{
+		public override string BugNumber
+		{
+			get { return "NH1262.fk.bidirectional"; }
+		}
+
+		protected override void OnSetUp()
+		{
+			base.OnSetUp();
+			using (var s = OpenSession())
+			using (var t = s.BeginTransaction())
+			{
+				var emp = new Employee();
+				emp.info = new EmployeeInfo(emp);
+
+				s.Save(emp);
+				t.Commit();
+			}
+		}
+
+		protected override void OnTearDown()
+		{
+			base.OnTearDown();
+
+			using (var session = OpenSession())
+			using (var tx = session.BeginTransaction())
+			{
+				session.Delete("from EmployeeInfo");
+				session.Delete("from Employee");
+				tx.Commit();
+			}
+		}
+
+		[Test]
+		public void testOrphanedWhileManaged()
+		{
+			long empId = 0;
+
+			using (var s = OpenSession())
+			using (var t = s.BeginTransaction())
+			{
+				var empInfoResults = s.CreateQuery("from EmployeeInfo").List<EmployeeInfo>();
+				Assert.AreEqual(1, empInfoResults.Count);
+
+				var empResults = s.CreateQuery("from Employee").List<Employee>();
+				Assert.AreEqual(1, empResults.Count);
+
+				var emp = empResults[0];
+				Assert.NotNull(emp);
+
+				empId = emp.id;
+				emp.info = null;
+				t.Commit();
+			}
+
+			using (var s = OpenSession())
+			using (var t = s.BeginTransaction())
+			{
+				var emp = s.Get<Employee>(empId);
+				Assert.Null(emp.info);
+
+				var empInfoResults = s.CreateQuery("from EmployeeInfo").List<EmployeeInfo>();
+				Assert.AreEqual(0, empInfoResults.Count);
+
+				var empResults = s.CreateQuery("from Employee").List<Employee>();
+				Assert.AreEqual(1, empResults.Count);
+
+				t.Commit();
+			}
+		}
+
+	}
+}

src/NHibernate.Test/NHSpecificTest/NH1262/fk/bidirectional/Mappings.hbm.xml

@@ -0,0 +1,27 @@
+<?xml version="1.0" encoding="utf-8" ?>
+<hibernate-mapping xmlns="urn:nhibernate-mapping-2.2"
+				   namespace="NHibernate.Test.NHSpecificTest.NH1262.fk.bidirectional"
+				   assembly="NHibernate.Test">
+	
+    <class name="Employee">
+        <id name="id" type="long" column="id">
+            <generator class="increment" />
+        </id>
+        <one-to-one name="info"                    
+										property-ref="employee"
+                    class="EmployeeInfo"
+                    cascade="all,delete-orphan"
+                    constrained="false" />
+    </class>
+
+    <class name="EmployeeInfo">
+        <id name="id" type="long" column="id">
+            <generator class="increment" />
+        </id>
+        <many-to-one name="employee"
+										 column="employee_id"
+                     unique="true"
+                     not-null="true" />
+    </class>
+
+</hibernate-mapping>

src/NHibernate.Test/NHSpecificTest/NH1262/fk/bidirectional/Model.cs

@@ -0,0 +1,30 @@
+
+namespace NHibernate.Test.NHSpecificTest.NH1262.fk.bidirectional
+{
+	public class Employee
+	{
+		public virtual long id { get; set; }
+		public virtual EmployeeInfo info { get; set; }
+
+		public Employee()
+		{
+
+		}
+	}
+
+	public class EmployeeInfo
+	{
+		public virtual long id { get; set; }
+		public virtual Employee employee { get; set; }
+
+		public EmployeeInfo()
+		{
+
+		}
+
+		public EmployeeInfo(Employee emp)
+		{
+			employee = emp;
+		}
+	}
+}

src/NHibernate.Test/NHSpecificTest/NH1262/fk/composite/DeleteOneToOneOrphansTest.cs

@@ -0,0 +1,79 @@
+using NUnit.Framework;
+
+namespace NHibernate.Test.NHSpecificTest.NH1262.fk.composite
+{
+	public class DeleteOneToOneOrphansTest : BugTestCase 
+	{
+	
+		public override string BugNumber
+		{
+			get { return "NH1262.fk.composite"; }
+		}
+
+		protected override void OnSetUp()
+		{
+			base.OnSetUp();
+			using (var s = OpenSession())
+			using (var t = s.BeginTransaction())
+			{
+				var emp = new Employee();
+				emp.info = new EmployeeInfo( 1L, 1L);
+
+				s.Save(emp);
+				t.Commit();
+			}
+		}
+
+		protected override void OnTearDown()
+		{
+			base.OnTearDown();
+
+			using (var session = OpenSession())
+			using (var tx = session.BeginTransaction())
+			{
+				session.Delete("from EmployeeInfo");
+				session.Delete("from Employee");
+				tx.Commit();
+			}
+		}
+
+
+		[Test]
+		public void testOrphanedWhileManaged() 
+		{
+			long empId = 0;
+
+			using (var s = OpenSession())
+			using (var t = s.BeginTransaction())
+			{
+				var infoList = s.CreateQuery( "from EmployeeInfo" ).List<EmployeeInfo>();
+				Assert.AreEqual(1, infoList.Count );
+				
+				var empList = s.CreateQuery( "from Employee" ).List<Employee>();
+				Assert.AreEqual(1, empList.Count);
+				
+				var emp = empList[0];
+				Assert.NotNull(emp.info);
+				
+				empId = emp.id;
+				emp.info = null ;
+				t.Commit();
+		
+			}
+
+
+			using (var s = OpenSession())
+			using (var t = s.BeginTransaction())
+			{
+				var emp = s.Get<Employee>(empId);
+				Assert.IsNull(emp.info);
+
+				var empInfoList = s.CreateQuery("from EmployeeInfo").List<EmployeeInfo>();
+				Assert.AreEqual(0, empInfoList.Count);
+
+				var empList = s.CreateQuery("from Employee").List<Employee>();
+				Assert.AreEqual(1, empList.Count);
+			}
+		}
+	}
+}

src/NHibernate.Test/NHSpecificTest/NH1262/fk/composite/Mappings.hbm.xml

@@ -0,0 +1,23 @@
+<?xml version="1.0" encoding="utf-8" ?>
+<hibernate-mapping xmlns="urn:nhibernate-mapping-2.2"
+				   namespace="NHibernate.Test.NHSpecificTest.NH1262.fk.composite"
+				   assembly="NHibernate.Test">
+
+    <class name="Employee">
+        <id name="id" type="long" column="id">
+            <generator class="increment" />
+        </id>
+         <many-to-one name="info" unique="true" cascade="all,delete-orphan"  not-found="exception">
+            <column name="COMP_ID" />
+            <column name="PERS_ID" />
+         </many-to-one>
+    </class>
+
+    <class name="EmployeeInfo">
+        <composite-id class="EmployeeInfo+Id" name="id">
+            <key-property name="companyId" column="COMP_ID" />
+            <key-property name="personId" column="PERS_ID" />
+        </composite-id>
+    </class>
+
+</hibernate-mapping>

src/NHibernate.Test/NHSpecificTest/NH1262/fk/composite/Model.cs

@@ -0,0 +1,84 @@
+using System;
+
+namespace NHibernate.Test.NHSpecificTest.NH1262.fk.composite
+{
+	public class Employee
+	{
+		public virtual long id { get; set; }
+		public virtual EmployeeInfo info { get; set; }
+
+		public Employee()
+		{
+
+		}
+	}
+
+	public class EmployeeInfo
+	{
+		public class Id
+		{
+			public virtual long companyId { get; set; }
+			public virtual long personId { get; set; }
+
+			public Id()
+			{
+
+			}
+
+			public Id(long companyId, long personId)
+			{
+				this.companyId = companyId;
+				this.personId = personId;
+			}
+
+
+			public override bool Equals(Object o)
+			{
+				if (this == o)
+				{
+					return true;
+				}
+
+				var t = this.GetType();
+				var u = o.GetType();
+
+
+				if (o == null || !t.IsAssignableFrom(u) || !u.IsAssignableFrom(t))
+				{
+					return false;
+				}
+
+				var id = o as Id;
+
+				return companyId.Equals(id.companyId)
+						&& personId.Equals(id.personId);
+
+			}
+
+			public override int GetHashCode()
+			{
+				return (31 * companyId.GetHashCode()) + personId.GetHashCode();
+			}
+		}
+
+		public virtual Id id { get; set; }
+		public virtual Employee employee { get; set; }
+
+		public EmployeeInfo()
+		{
+
+		}
+
+		public EmployeeInfo(long companyId, long personId)
+		{
+			this.id = new Id(companyId, personId);
+		}
+
+		public EmployeeInfo(Id id)
+		{
+			this.id = id;
+		}
+	}
+
+	
+}