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我使用JTA和我的persistence.xml是由於我使用JTA如下JPA - 更改不會持續了JTA事務類型
<?xml version="1.0" encoding="UTF-8" ?>
<persistence xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://java.sun.com/xml/ns/persistence http://java.sun.com/xml/ns/persistence/persistence_1_0.xsd" version="1.0"
xmlns="http://java.sun.com/xml/ns/persistence">
<persistence-unit name="test" transaction-type="JTA">
<provider>org.eclipse.persistence.jpa.PersistenceProvider</provider>
<jta-data-source>jdbc/testDS</jta-data-source>
<class>test.entity.Employees</class>
<exclude-unlisted-classes>true</exclude-unlisted-classes>
<properties>
<property name="eclipselink.target-server" value="OC4J"/>
<property name="javax.persistence.target-database" value="Oracle"/>
<property name="javax.persistence.logging.parameters" value="TRUE"/>
</properties>
</persistence-unit>
</persistence>
,我沒有EntityTransaction。
Java代碼片斷
Employees emp = new Employees();
emp.setEmpNumber(empPOJO.getEmpNumber());
final EntityManager em = getEntityManager();
try {
em.merge(vehicleInspection);
} finally {
if (em != null && em.isOpen()) {
em.close();
}
}
}
但是我不能堅持,因爲沒有提交的database.Is變化?
你是從事務性方法調用這個嗎?另外什麼是嵌套的'try/finally'? –
@ M.Deinum你是什麼意思的交易方法? – user75ponic
這是通過測試代碼完成的。如果是的話,他們會得到回滾。所以你不會看到你什麼時候查詢 –