Add test - self referencing relationships: ResourceFile

src/test/java/com/avaje/tests/model/selfref/BaseResourceFile.java

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+package com.avaje.tests.model.selfref;
+
+import java.util.UUID;
+
+import javax.persistence.Column;
+import javax.persistence.Id;
+import javax.persistence.MappedSuperclass;
+
+@MappedSuperclass
+public abstract class BaseResourceFile {
+  
+  private static final long serialVersionUID = 1L;
+
+  @Id
+  @Column(name = "id", nullable = false, length = 64)
+  private String id;
+
+  public BaseResourceFile() {
+    this.id = newId();
+  }
+
+  public String getId() {
+    return id;
+  }
+
+  protected void setId(String id) {
+    this.id = id;
+  }
+
+  protected String newId() {
+    return UUID.randomUUID().toString();
+  }
+}

src/test/java/com/avaje/tests/model/selfref/ResourceFile.java

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+package com.avaje.tests.model.selfref;
+
+import java.util.HashSet;
+import java.util.Set;
+
+import javax.persistence.CascadeType;
+import javax.persistence.Column;
+import javax.persistence.Entity;
+import javax.persistence.FetchType;
+import javax.persistence.JoinColumn;
+import javax.persistence.ManyToOne;
+import javax.persistence.OneToMany;
+import javax.persistence.Table;
+
+import com.avaje.ebean.annotation.PrivateOwned;
+
+@Entity
+@Table(name = "ResourceFile")
+public class ResourceFile extends BaseResourceFile {
+  
+  private static final long serialVersionUID = 1L;
+
+  @ManyToOne(fetch = FetchType.LAZY, optional = true)
+  @JoinColumn(name = "parentResourceFileId", nullable = true)
+  private ResourceFile parent;
+
+  @OneToMany(cascade = CascadeType.REMOVE, fetch = FetchType.LAZY, mappedBy = "parent")
+  @PrivateOwned
+  private Set<ResourceFile> alternatives = new HashSet<ResourceFile>();
+
+  @Column(name = "name", length = 128, nullable = false)
+  private String name;
+
+  public String getName() {
+    return name;
+  }
+
+  public void setName(String name) {
+    this.name = name;
+  }
+
+  public ResourceFile getParent() {
+    return parent;
+  }
+
+  public void setParent(ResourceFile parent) {
+    this.parent = parent;
+  }
+
+  public Set<ResourceFile> getAlternatives() {
+    return alternatives;
+  }
+
+  public void setAlternatives(Set<ResourceFile> alternatives) {
+    this.alternatives = alternatives;
+  }
+}

src/test/java/com/avaje/tests/model/selfref/TestResourceFileSelfRef.java

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+package com.avaje.tests.model.selfref;
+
+import org.junit.Test;
+
+import com.avaje.ebean.Ebean;
+import com.avaje.ebean.EbeanServer;
+
+public class TestResourceFileSelfRef {
+
+  @Test
+  public void test() {
+    
+    EbeanServer server = Ebean.getServer(null);
+
+    ResourceFile childFile1 = new ResourceFile();
+    childFile1.setName("childFile1");
+    ResourceFile childFile2 = new ResourceFile();
+    childFile2.setName("childFile2");
+
+    ResourceFile parentFile1 = new ResourceFile();
+    parentFile1.setName("parentFile1");
+
+    childFile1.setParent(parentFile1);
+    childFile2.setParent(parentFile1);
+    parentFile1.getAlternatives().add(childFile1);
+    parentFile1.getAlternatives().add(childFile2);
+
+    server.save(parentFile1);
+    server.save(childFile1);
+    server.save(childFile2);
+
+    // As a workaround for the problem, the child objects can be deleted first
+    //server.delete(childFile1);
+    //server.delete(childFile2);
+    server.delete(parentFile1);
+  }
+}