HHH-7767 JoinWalker creates ".." substring in association path

hibernate-core/src/main/java/org/hibernate/loader/JoinWalker.java

@@ -561,7 +561,7 @@ public class JoinWalker {
 							0,
 							persister,
 							alias,
-							path.append( "" ),
+							path,
 							currentDepth
 					);
 				}

hibernate-core/src/test/java/org/hibernate/test/annotations/idmanytoone/Course.java

@@ -0,0 +1,53 @@
+package org.hibernate.test.annotations.idmanytoone;
+
+import java.io.Serializable;
+import java.util.Set;
+import javax.persistence.Entity;
+import javax.persistence.GeneratedValue;
+import javax.persistence.Id;
+import javax.persistence.OneToMany;
+import javax.persistence.Table;
+
+/**
+ * @author Alex Kalashnikov
+ */
+@Entity
+@Table(name = "idmanytoone_course")
+public class Course implements Serializable {
+
+    @Id
+    @GeneratedValue
+    private int id;
+
+    private String name;
+
+    @OneToMany(mappedBy = "course")
+    private Set<CourseStudent> students;
+
+    public Course() {
+    }
+
+    public int getId() {
+        return id;
+    }
+
+    public void setId(int id) {
+        this.id = id;
+    }
+
+    public String getName() {
+        return name;
+    }
+
+    public void setName(String name) {
+        this.name = name;
+    }
+
+    public Set<CourseStudent> getStudents() {
+        return students;
+    }
+
+    public void setStudents(Set<CourseStudent> students) {
+        this.students = students;
+    }
+}

hibernate-core/src/test/java/org/hibernate/test/annotations/idmanytoone/CourseStudent.java

@@ -0,0 +1,57 @@
+package org.hibernate.test.annotations.idmanytoone;
+
+import java.io.Serializable;
+import javax.persistence.Entity;
+import javax.persistence.FetchType;
+import javax.persistence.Id;
+import javax.persistence.IdClass;
+import javax.persistence.JoinColumn;
+import javax.persistence.ManyToOne;
+import javax.persistence.Table;
+
+/**
+ * @author Alex Kalashnikov
+ */
+@Entity
+@Table(name = "idmanytoone_course_student")
+public class CourseStudent implements Serializable {
+
+    @Id
+    @ManyToOne(fetch = FetchType.LAZY)
+    @JoinColumn(name = "course_id")
+    private Course course;
+
+    @Id
+    @ManyToOne(fetch = FetchType.LAZY)
+    @JoinColumn(name = "student_id")
+    private Student student;
+
+    private String value;
+
+    public CourseStudent() {
+    }
+
+    public Course getCourse() {
+        return course;
+    }
+
+    public void setCourse(Course course) {
+        this.course = course;
+    }
+
+    public Student getStudent() {
+        return student;
+    }
+
+    public void setStudent(Student student) {
+        this.student = student;
+    }
+
+    public String getValue() {
+        return value;
+    }
+
+    public void setValue(String value) {
+        this.value = value;
+    }
+}

hibernate-core/src/test/java/org/hibernate/test/annotations/idmanytoone/IdManyToOneTest.java

@@ -23,6 +23,8 @@
  */
 package org.hibernate.test.annotations.idmanytoone;
 
+import org.hibernate.Criteria;
+import org.hibernate.criterion.Restrictions;
 import org.junit.Test;
 
 import org.hibernate.Session;
@@ -64,6 +66,28 @@ public class IdManyToOneTest extends BaseCoreFunctionalTestCase {
 		s.close();
 	}
 
+    @Test
+    public void testCriteriaRestrictionOnIdManyToOne() {
+        Session s = openSession();
+        s.beginTransaction();
+
+        s.createQuery( "from Course c join c.students cs join cs.student s where s.name = 'Foo'" ).list();
+
+        Criteria criteria = s.createCriteria( Course.class );
+        criteria.createCriteria( "students" ).createCriteria( "student" ).add( Restrictions.eq( "name", "Foo" ) );
+        criteria.list();
+
+        Criteria criteria2 = s.createCriteria( Course.class );
+        criteria2.createAlias( "students", "cs" );
+        criteria2.add( Restrictions.eq( "cs.value", "Bar" ) );
+        criteria2.createAlias( "cs.student", "s" );
+        criteria2.add( Restrictions.eq( "s.name", "Foo" ) );
+        criteria2.list();
+
+        s.getTransaction().commit();
+        s.close();
+    }
+
 	@Override
 	protected Class[] getAnnotatedClasses() {
 		return new Class[] {
@@ -74,6 +98,9 @@ public class IdManyToOneTest extends BaseCoreFunctionalTestCase {
 				CardField.class,
 				Card.class,
 				Project.class,
+                Course.class,
+                Student.class,
+                CourseStudent.class,
 
 				//tested only through deployment
 				//ANN-590 testIdClassManyToOneWithReferenceColumn 

hibernate-core/src/test/java/org/hibernate/test/annotations/idmanytoone/Student.java

@@ -0,0 +1,53 @@
+package org.hibernate.test.annotations.idmanytoone;
+
+import java.io.Serializable;
+import java.util.Set;
+import javax.persistence.Entity;
+import javax.persistence.GeneratedValue;
+import javax.persistence.Id;
+import javax.persistence.OneToMany;
+import javax.persistence.Table;
+
+/**
+ * @author Alex Kalashnikov
+ */
+@Entity
+@Table(name = "idmanytoone_student")
+public class Student implements Serializable {
+
+    @Id
+    @GeneratedValue
+    private int id;
+
+    private String name;
+
+    @OneToMany(mappedBy = "student")
+    private Set<CourseStudent> courses;
+
+    public Student() {
+    }
+
+    public int getId() {
+        return id;
+    }
+
+    public void setId(int id) {
+        this.id = id;
+    }
+
+    public String getName() {
+        return name;
+    }
+
+    public void setName(String name) {
+        this.name = name;
+    }
+
+    public Set<CourseStudent> getCourses() {
+        return courses;
+    }
+
+    public void setCourses(Set<CourseStudent> courses) {
+        this.courses = courses;
+    }
+}