有没有办法让EclipseLink将camel case转换为下划线?
例如,class MyEntity
=> select * from MY_ENTITY
理想情况下,我预先打包的东西可以作为persistence.xml中的属性。
答案 0 :(得分:9)
您可以编写会话自定义程序来执行此操作。首先,创建一个这样的类:
public class MySessionCustomizer implements SessionCustomizer {
@Override
public void customize(Session session) throws SQLException {
for (ClassDescriptor descriptor : session.getDescriptors().values()) {
//Only change the table name for non-embedable entities with no @Table already
if (!descriptor.getTables().isEmpty() && descriptor.getAlias().equalsIgnoreCase(descriptor.getTableName())) {
String tableName = convertToUnderscore(descriptor.getTableName());
descriptor.setTableName(tableName);
for (IndexDefinition index : descriptor.getTables().get(0).getIndexes()) {
index.setTargetTable(tableName);
}
}
}
}
}
然后,您需要注册此自定义程序。在<properties>
部分的persistence.xml中添加此行:
<property name="eclipselink.session.customizer" value="foo.bar.MySessionCustomizer" />