@javax.persistence.Entity
public class Entity {
    @Id
    @GeneratedValue
    private Integer id;
    private String key;
    private EmbeddedObject embedded;

    ... getters/setters ...
}

@Embeddable
public class EmbeddedObject {
    @OneToMany
    @JoinColumn(name = "entity_key", referencedColumnName = "key")   
    private List<AnotherEntity> list;

    ... getter/setter ...
}

@Entity
public class AnotherEntity {
    @Id
    @GeneratedValue
    private Integer id;
   
    @Column(name = "entity_key")
    private String key;

    ... getters/setters ...
}

10:11:46 DEBUG [EntityBinder][bindEntity:212] Import with entity name=AnotherEntity
10:11:46 INFO [EntityBinder][bindTable:340] Bind entity test.AnotherEntity on table AnotherEntity
10:11:46 DEBUG [AnnotationBinder][addElementsOfAClass:940] Processing test.AnotherEntity property annotation
10:11:46 DEBUG [AnnotationBinder][addElementsOfAClass:940] Processing test.AnotherEntity field annotation
org.hibernate.MappingException: property not found: _test_AnotherEntity_embedded.listin entity: test.Entity
   at org.hibernate.mapping.PersistentClass.getRecursiveProperty(PersistentClass.java:337)
   at org.hibernate.cfg.annotations.CollectionBinder.buildCollectionKey(CollectionBinder.java:930)
   at org.hibernate.cfg.annotations.CollectionBinder.bindCollectionSecondPass(CollectionBinder.java:1215)
   at org.hibernate.cfg.annotations.CollectionBinder.bindOneToManySecondPass(CollectionBinder.java:585)
   at org.hibernate.cfg.annotations.CollectionBinder.bindStarToManySecondPass(CollectionBinder.java:517)
   at org.hibernate.cfg.annotations.CollectionBinder$1.secondPass(CollectionBinder.java:471)
   at org.hibernate.cfg.CollectionSecondPass.doSecondPass(CollectionSecondPass.java:43)
   at org.hibernate.cfg.Configuration.secondPassCompile(Configuration.java:1054)
   at org.hibernate.cfg.AnnotationConfiguration.secondPassCompile(AnnotationConfiguration.java:296)
   at org.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:1210)
   at test.TestCase.buildSessionFactory(TestCase.java:48)
   at test.TestCase.setUp(TestCase.java:58)
   at junit.framework.TestCase.runBare(TestCase.java:125)
   at junit.framework.TestResult$1.protect(TestResult.java:106)
   at junit.framework.TestResult.runProtected(TestResult.java:124)
   at junit.framework.TestResult.run(TestResult.java:109)
   at junit.framework.TestCase.run(TestCase.java:118)
   at junit.framework.TestSuite.runTest(TestSuite.java:208)
   at junit.framework.TestSuite.run(TestSuite.java:203)
   at org.eclipse.jdt.internal.junit.runner.junit3.JUnit3TestReference.run(JUnit3TestReference.java:128)
   at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)
   at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:460)
   at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:673)
   at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:386)
   at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:196)
Caused by: org.hibernate.MappingException: property not found: _test_AnotherEntity_embedded.listin entity: test.Entity
   at org.hibernate.mapping.PersistentClass.getRecursiveProperty(PersistentClass.java:368)
   at org.hibernate.mapping.PersistentClass.getRecursiveProperty(PersistentClass.java:334)
   ... 24 more
Caused by: org.hibernate.MappingException: property not found: _test_AnotherEntity_embedded on entity test.Entity
   at org.hibernate.mapping.PersistentClass.getProperty(PersistentClass.java:384)
   at org.hibernate.mapping.PersistentClass.getRecursiveProperty(PersistentClass.java:358)
   ... 25 more
10:11:46 DEBUG [AnnotationBinder][processElementAnnotations:1032] Processing annotations of test.AnotherEntity.id
10:11:46 DEBUG [Ejb3Column][bind:161] Binding column id unique false
10:11:46 DEBUG [AnnotationBinder][processElementAnnotations:1153] id is an id
10:11:46 DEBUG [SimpleValueBinder][make:220] building SimpleValue for id
10:11:46 DEBUG [PropertyBinder][make:122] Building property id
10:11:46 DEBUG [PropertyBinder][make:155] Cascading id with null
10:11:46 DEBUG [AnnotationBinder][processElementAnnotations:1186] Bind @Id on id
10:11:46 DEBUG [AnnotationBinder][processElementAnnotations:1032] Processing annotations of test.AnotherEntity.key
10:11:46 DEBUG [Ejb3Column][bind:161] Binding column entity_key unique false
10:11:46 DEBUG [PropertyBinder][bind:102] binding property key with lazy=false
10:11:46 DEBUG [SimpleValueBinder][make:220] building SimpleValue for key
10:11:46 DEBUG [PropertyBinder][make:122] Building property key
10:11:46 DEBUG [PropertyBinder][make:155] Cascading key with null
10:11:46 DEBUG [AnnotationConfiguration][processFkSecondPassInOrder:329] processing manytoone fk mappings
10:11:46 DEBUG [Configuration][secondPassCompile:1044] processing extends queue
10:11:46 DEBUG [Configuration][secondPassCompile:1048] processing collection mappings
10:11:46 DEBUG [CollectionSecondPass][doSecondPass:41] Second pass for collection: test.Entity.embedded.list
10:11:46 DEBUG [CollectionBinder][bindOneToManySecondPass:551] Binding a OneToMany: test.EmbeddedObject.list through a foreign key
10:11:46 INFO [CollectionBinder][bindOneToManySecondPass:581] Mapping collection: test.Entity.embedded.list -> AnotherEntity