java - 获取条件查询的 JPQL/SQL 字符串表示形式

Question

如何使用参数值获取条件查询的 SQL 字符串表示形式？

我尝试了这个，但它返回一个没有参数值的字符串给我:

String QueryString = 'SELECT * FROM CUSTOMERS WHERE lastname = ?'


query = entityManager.createNativeQuery(QueryString);

query.setParameter(1, "toto");

System.out.print(query.unwrap(JpaQuery.class).getDatabaseQuery().getSQLString());

但返回“SELECT * FROM CUSTOMERS WHERE lastname = ?”而不是“从客户中选择*，其中姓氏 = 'toto'”

Answer 1

感谢@GrootC帮助我找到解决方案。

如果解决方案对其他人有帮助:

String QueryString = 'SELECT * FROM CUSTOMERS WHERE lastname = ?';
Query query = entityManager.createNativeQuery(QueryString); 
Session session = entityManager.unwrap(JpaEntityManager.class).getActiveSession();  
DatabaseQuery databaseQuery = query.unwrap(org.eclipse.persistence.jpa.JpaQuery.class).getDatabaseQuery();
DatabaseRecord recordWithValues= new DatabaseRecord();

query.setParameter(1, "toto"); 
recordWithValues.add(new DatabaseField(Integer.toString(1)), "toto");

databaseQuery.prepareCall(session, recordWithValues); 
String sqlStringWithArgs = databaseQuery.getTranslatedSQLString(session, recordWithValues);

System.out.print(sqlStringWithArgs);

====SELECT * FROM CUSTOMERS WHERE lastname = 'toto'====