From e1ec0bcdfe366b2a51efbfd57292ffda73133de0 Mon Sep 17 00:00:00 2001
From: Rob Bygrave <robin.bygrave@gmail.com>
Date: Fri, 25 Apr 2014 22:34:03 +1200
Subject: [PATCH] Test and Fix for #39 -
 TestOnCascadeDeleteChildrenWithCompositeKeys from hei1233212000, with fix
 included

---
 ...ascadeDeleteChildrenWithCompositeKeys.java | 214 ++++++++++++++++++
 1 file changed, 214 insertions(+)
 create mode 100644 src/test/java/com/avaje/tests/compositekeys/TestOnCascadeDeleteChildrenWithCompositeKeys.java

diff --git a/src/test/java/com/avaje/tests/compositekeys/TestOnCascadeDeleteChildrenWithCompositeKeys.java b/src/test/java/com/avaje/tests/compositekeys/TestOnCascadeDeleteChildrenWithCompositeKeys.java
new file mode 100644
index 000000000..a989eb717
--- /dev/null
+++ b/src/test/java/com/avaje/tests/compositekeys/TestOnCascadeDeleteChildrenWithCompositeKeys.java
@@ -0,0 +1,214 @@
+package com.avaje.tests.compositekeys;
+
+import static org.junit.Assert.assertEquals;
+
+import java.io.Serializable;
+import java.util.ArrayList;
+import java.util.List;
+import java.util.Set;
+
+import javax.persistence.CascadeType;
+import javax.persistence.Embeddable;
+import javax.persistence.EmbeddedId;
+import javax.persistence.Entity;
+import javax.persistence.Id;
+import javax.persistence.JoinColumn;
+import javax.persistence.ManyToOne;
+import javax.persistence.OneToMany;
+import javax.persistence.Table;
+
+import org.junit.Before;
+import org.junit.Test;
+
+import com.avaje.ebean.BaseTestCase;
+import com.avaje.ebean.Ebean;
+import com.avaje.ebeaninternal.api.SpiEbeanServer;
+import com.avaje.ebeaninternal.server.deploy.BeanDescriptor;
+import com.avaje.ebeaninternal.server.deploy.BeanPropertyAssocMany;
+
+/**
+ * @see https://groups.google.com/forum/#!topic/ebean/VD1MV2-LrOc
+ */
+public class TestOnCascadeDeleteChildrenWithCompositeKeys extends BaseTestCase {
+  @Before public void before() {
+    // remove all the User records first
+    Ebean.delete(Ebean.find(User.class).findList());
+
+    // insert 2 User records
+    Ebean.insert(new User(1L));
+    Ebean.insert(new User(2L));
+  }
+
+  /**
+   * work fine when delete User one by one
+   */
+  @Test public void testDeleteById() {
+    assertEquals(2, Ebean.find(User.class).findList().size());
+    Ebean.delete(User.class, 1L);
+    Ebean.delete(User.class, 2L);
+    assertEquals(0, Ebean.find(User.class).findList().size());
+  }
+
+  /**
+   * Wrong SQL is generated when deleting user by list of ID
+   * SQL generated: delete from user_role where (user_id) in ((?,?),(?,?))
+   */
+  @Test public void testDeleteByIdList() {
+    assertEquals(2, Ebean.find(User.class).findList().size());
+    List<Long> ids = new ArrayList<Long>();
+    ids.add(1L);
+    ids.add(2L);
+
+    Ebean.delete(User.class, ids); // PersistenceException would be thrown here
+    assertEquals(0, Ebean.find(User.class).findList().size());
+  }
+  
+  @Test public void testFindByParentIdList() {
+    assertEquals(2, Ebean.find(User.class).findList().size());
+    
+    SpiEbeanServer spiServer = (SpiEbeanServer)Ebean.getServer(null);
+    
+    BeanDescriptor<TestOnCascadeDeleteChildrenWithCompositeKeys.User> beanDescriptor = 
+        spiServer.getBeanDescriptor(TestOnCascadeDeleteChildrenWithCompositeKeys.User.class);
+    
+    BeanPropertyAssocMany<?> beanProperty = (BeanPropertyAssocMany<?>)beanDescriptor.getBeanProperty("userRoles");
+
+    List<Object> ids = new ArrayList<Object>();
+    ids.add(1L);
+    ids.add(2L);
+
+    beanProperty.findIdsByParentId(null, ids, null, null);    
+  }
+
+  @Entity @Table(name = "em_user") public static class User {
+    private Long id;
+    private String name;
+    private Set<UserRole> userRoles;
+
+    public User() {}
+
+    public User(Long id) {
+      this.id = id;
+    }
+
+    @Id public Long getId() {
+      return id;
+    }
+
+    public void setId(Long id) {
+      this.id = id;
+    }
+
+    public String getName() {
+      return name;
+    }
+
+    public void setName(String name) {
+      this.name = name;
+    }
+
+    @OneToMany(cascade = CascadeType.REMOVE) public Set<UserRole> getUserRoles() {
+      return userRoles;
+    }
+
+    public void setUserRoles(Set<UserRole> userRoles) {
+      this.userRoles = userRoles;
+    }
+  }
+
+  @Entity @Table(name = "em_user_role") public static class UserRole implements Serializable {
+    private static final long serialVersionUID = 1L;
+    private UserRolePK pk;
+    private User user;
+    private Role role;
+
+    @EmbeddedId public UserRolePK getPk() {
+      return pk;
+    }
+
+    public void setPk(UserRolePK pk) {
+      this.pk = pk;
+    }
+
+    @ManyToOne @JoinColumn(name = "user_id", nullable = false, insertable = false, updatable = false) public User getUser() {
+      return user;
+    }
+
+    public void setUser(User user) {
+      this.user = user;
+    }
+
+    @ManyToOne @JoinColumn(name = "role_id", nullable = false, insertable = false, updatable = false) public Role getRole() {
+      return role;
+    }
+
+    public void setRole(Role role) {
+      this.role = role;
+    }
+
+    @Embeddable public static class UserRolePK implements Serializable {
+      private static final long serialVersionUID = 1L;
+      private Long userId;
+      private Long roleId;
+
+      @Override public int hashCode() {
+        return userId == null || roleId == null ? 0 : (int) (userId + roleId);
+      }
+
+      @Override public boolean equals(Object other) {
+        if (userId == null || roleId == null) return false;
+        if (other instanceof UserRolePK) {
+          UserRolePK otherPk = (UserRolePK) other;
+          return userId.equals(otherPk.userId) && roleId.equals(otherPk.roleId);
+        }
+        return false;
+      }
+
+      public Long getUserId() {
+        return userId;
+      }
+
+      public void setUserId(Long userId) {
+        this.userId = userId;
+      }
+
+      public Long getRoleId() {
+        return roleId;
+      }
+
+      public void setRoleId(Long roleId) {
+        this.roleId = roleId;
+      }
+    }
+  }
+
+  @Entity @Table(name = "em_role") public static class Role {
+    private Long id;
+    private String name;
+    private Set<UserRole> userRoles;
+
+    @Id public Long getId() {
+      return id;
+    }
+
+    public void setId(Long id) {
+      this.id = id;
+    }
+
+    public String getName() {
+      return name;
+    }
+
+    public void setName(String name) {
+      this.name = name;
+    }
+
+    @OneToMany(cascade = CascadeType.REMOVE) public Set<UserRole> getUserRoles() {
+      return userRoles;
+    }
+
+    public void setUserRoles(Set<UserRole> userRoles) {
+      this.userRoles = userRoles;
+    }
+  }
+}
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