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<p style="margin: 10px 0 0 0">Also, in the following example foreing keys that point to different entities (tables) have the same name after generation:</p>
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<pre class="code-java" style="margin: 10px 0 0 0; max-height: 30em; overflow: auto; white-space: pre-wrap; word-wrap: normal">
<span class="code-keyword" style="color: #000091">package</span> com.brandmaker.mms.service.portal.test;
<span class="code-keyword" style="color: #000091">import</span> <span class="code-keyword" style="color: #000091">static</span> org.junit.Assert.assertNotEquals;
<span class="code-keyword" style="color: #000091">import</span> java.util.Iterator;
<span class="code-keyword" style="color: #000091">import</span> javax.persistence.Column;
<span class="code-keyword" style="color: #000091">import</span> javax.persistence.Entity;
<span class="code-keyword" style="color: #000091">import</span> javax.persistence.FetchType;
<span class="code-keyword" style="color: #000091">import</span> javax.persistence.GeneratedValue;
<span class="code-keyword" style="color: #000091">import</span> javax.persistence.Id;
<span class="code-keyword" style="color: #000091">import</span> javax.persistence.JoinColumn;
<span class="code-keyword" style="color: #000091">import</span> javax.persistence.OneToOne;
<span class="code-keyword" style="color: #000091">import</span> javax.persistence.Table;
<span class="code-keyword" style="color: #000091">import</span> org.hibernate.annotations.ForeignKey;
<span class="code-keyword" style="color: #000091">import</span> org.hibernate.testing.junit4.BaseCoreFunctionalTestCase;
<span class="code-keyword" style="color: #000091">import</span> org.junit.Test;
/**
* Created by alexandr on 02.02.15.
*/
<span class="code-keyword" style="color: #000091">public</span> class HibernateForeignKeyTest <span class="code-keyword" style="color: #000091">extends</span> BaseCoreFunctionalTestCase
{
<span class="code-keyword" style="color: #000091">private</span> <span class="code-keyword" style="color: #000091">static</span> <span class="code-keyword" style="color: #000091">final</span> <span class="code-object" style="color: #910091">String</span> USER_ID = <span class="code-quote" style="color: #009100">"USER_ID"</span>;
<span class="code-keyword" style="color: #000091">private</span> <span class="code-keyword" style="color: #000091">static</span> <span class="code-keyword" style="color: #000091">final</span> <span class="code-object" style="color: #910091">String</span> PERSONAL_DATA_ID = <span class="code-quote" style="color: #009100">"PERSONAL_DATA_ID"</span>;
<span class="code-keyword" style="color: #000091">private</span> <span class="code-keyword" style="color: #000091">static</span> <span class="code-keyword" style="color: #000091">final</span> <span class="code-object" style="color: #910091">String</span> USER_SETTINGS_TABLE_NAME = <span class="code-quote" style="color: #009100">"user_settings"</span>;
<span class="code-keyword" style="color: #000091">private</span> <span class="code-keyword" style="color: #000091">static</span> <span class="code-keyword" style="color: #000091">final</span> <span class="code-object" style="color: #910091">String</span> USERS_TABLE_NAME = <span class="code-quote" style="color: #009100">"users"</span>;
<span class="code-keyword" style="color: #000091">private</span> <span class="code-keyword" style="color: #000091">static</span> <span class="code-keyword" style="color: #000091">final</span> <span class="code-object" style="color: #910091">String</span> PERSONALDATA_TABLE_NAME = <span class="code-quote" style="color: #009100">"personal_data"</span>;
<span class="code-keyword" style="color: #000091">private</span> <span class="code-keyword" style="color: #000091">static</span> <span class="code-keyword" style="color: #000091">final</span> <span class="code-object" style="color: #910091">String</span> EXPLICIT_USER_SETTING_FK_NAME = <span class="code-quote" style="color: #009100">"FK_USER_SETTING_TO_USER"</span>;
<span class="code-keyword" style="color: #000091">private</span> <span class="code-keyword" style="color: #000091">static</span> <span class="code-keyword" style="color: #000091">final</span> <span class="code-object" style="color: #910091">String</span> EXPLICIT_USERS_FK_NAME = <span class="code-quote" style="color: #009100">"FK_USER_SETTING_TO_USER_BACK"</span>;
<span class="code-keyword" style="color: #000091">private</span> <span class="code-keyword" style="color: #000091">static</span> <span class="code-keyword" style="color: #000091">final</span> <span class="code-object" style="color: #910091">String</span> EXPLICIT_PD_FK_NAME = <span class="code-quote" style="color: #009100">"FK_PERSONAL_DATA_TO_USER"</span>;
@Entity
@Table( name = PERSONALDATA_TABLE_NAME )
<span class="code-keyword" style="color: #000091">public</span> <span class="code-keyword" style="color: #000091">static</span> class PersonalData
{
@Column(name = PERSONAL_DATA_ID, nullable = <span class="code-keyword" style="color: #000091">false</span>)
<span class="code-keyword" style="color: #000091">private</span> <span class="code-object" style="color: #910091">Integer</span> fakeId;
@Id
@Column(name = USER_ID, nullable = <span class="code-keyword" style="color: #000091">false</span>, insertable = <span class="code-keyword" style="color: #000091">false</span>, updatable = <span class="code-keyword" style="color: #000091">false</span>)
<span class="code-keyword" style="color: #000091">private</span> <span class="code-object" style="color: #910091">Integer</span> userId;
@OneToOne(optional = <span class="code-keyword" style="color: #000091">false</span>, fetch = FetchType.LAZY, targetEntity = User.class)
@JoinColumn(name = USER_ID, nullable = <span class="code-keyword" style="color: #000091">false</span>, updatable = <span class="code-keyword" style="color: #000091">false</span>)
@ForeignKey(name = EXPLICIT_PD_FK_NAME)
<span class="code-keyword" style="color: #000091">private</span> User user;
}
@Entity
@Table( name = USER_SETTINGS_TABLE_NAME )
<span class="code-keyword" style="color: #000091">public</span> <span class="code-keyword" style="color: #000091">static</span> class UserSetting {
@Id
@GeneratedValue
@Column(name = USER_ID, nullable = <span class="code-keyword" style="color: #000091">false</span>)
<span class="code-keyword" style="color: #000091">public</span> <span class="code-object" style="color: #910091">long</span> id;
@OneToOne(optional = <span class="code-keyword" style="color: #000091">false</span>, fetch = FetchType.LAZY, targetEntity = User.class)
@JoinColumn(name = USER_ID, nullable = <span class="code-keyword" style="color: #000091">false</span>, updatable = <span class="code-keyword" style="color: #000091">false</span>)
@ForeignKey(name = EXPLICIT_USER_SETTING_FK_NAME)
<span class="code-keyword" style="color: #000091">private</span> User user;
}
@Entity
@Table( name = USERS_TABLE_NAME )
<span class="code-keyword" style="color: #000091">public</span> <span class="code-keyword" style="color: #000091">static</span> class User {
@Id
@GeneratedValue
@Column(name = USER_ID)
<span class="code-keyword" style="color: #000091">public</span> <span class="code-object" style="color: #910091">long</span> id;
@OneToOne(fetch = FetchType.LAZY, optional = <span class="code-keyword" style="color: #000091">false</span>, targetEntity = PersonalData.class)
@JoinColumn(name = USER_ID)
<span class="code-keyword" style="color: #000091">public</span> PersonalData personalData;
@OneToOne(fetch = FetchType.LAZY, optional = <span class="code-keyword" style="color: #000091">false</span>, targetEntity = UserSetting.class)
@JoinColumn(name = USER_ID)
@ForeignKey(name = EXPLICIT_USERS_FK_NAME)
<span class="code-keyword" style="color: #000091">public</span> UserSetting userSetting;
}
@Test
<span class="code-keyword" style="color: #000091">public</span> void testForeignKeyUsers(){
Iterator<org.hibernate.mapping.Table> tableItr = configuration().getTableMappings();
<span class="code-keyword" style="color: #000091">while</span> (tableItr.hasNext())
{
org.hibernate.mapping.Table table = tableItr.next();
<span class="code-keyword" style="color: #000091">if</span> (USERS_TABLE_NAME.equals(table.getName())){
Iterator fkItr = table.getForeignKeyIterator();
<span class="code-object" style="color: #910091">String</span> foreinKeyNameForUserSetting = <span class="code-keyword" style="color: #000091">null</span>;
<span class="code-object" style="color: #910091">String</span> foreinKeyNameForPersonalData = <span class="code-keyword" style="color: #000091">null</span>;
<span class="code-keyword" style="color: #000091">while</span> (fkItr.hasNext())
{
org.hibernate.mapping.ForeignKey fk = (org.hibernate.mapping.ForeignKey) fkItr.next();
<span class="code-keyword" style="color: #000091">if</span> (<span class="code-quote" style="color: #009100">"com.brandmaker.mms.service.portal.test.HibernateForeignKeyTest$UserSetting"</span>.equals(fk.getReferencedEntityName()))
{
foreinKeyNameForUserSetting = fk.getName();
}
<span class="code-keyword" style="color: #000091">if</span> (<span class="code-quote" style="color: #009100">"com.brandmaker.mms.service.portal.test.HibernateForeignKeyTest$PersonalData"</span>.equals(fk.getReferencedEntityName()))
{
foreinKeyNameForPersonalData = fk.getName();
}
}
assertNotEquals(foreinKeyNameForPersonalData, foreinKeyNameForUserSetting);
}
}
}
@Override
<span class="code-keyword" style="color: #000091">protected</span> <span class="code-object" style="color: #910091">Class</span><?>[] getAnnotatedClasses() {
<span class="code-keyword" style="color: #000091">return</span> <span class="code-keyword" style="color: #000091">new</span> <span class="code-object" style="color: #910091">Class</span><?>[] {
User.class, UserSetting.class, PersonalData.class
};
}
}
</pre>
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