java - Hibernate/Spring Data JPA 无法在 Spring Boot 应用程序中识别 WITHIN 关键字

Question

我正在为我的 Entity/Pojo 类中的一个属性使用 @Formula 注释。在运行时，它正在创建一个查询来获取结果并抛出错误 ORA-02000: missing WITHIN keyword 因为它无法将 WITHIN 识别为关键字。

Marks.java

@Formula("(SELECT CASE WHEN dis_order IS NULL THEN (SELECT listagg(qpm.displayed_order,', ') WITHIN GROUP (ORDER BY qpm.displayed_order) FROM que_post_mark qpm WHERE qpm.es_id = es_id AND qpm.sez_id = sez_id GROUP BY qpm.es_id, qpm.sez_id) ELSE NULL END FROM dual)")
private String childItemsDisplayedOrder;

生成的查询如下:

select marks0_.*,
(SELECT
    CASE 
        WHEN marks0_.displayed_order IS NULL THEN (SELECT
            listagg(qpm.displayed_order,
            ', ') marks0_.WITHIN 
        GROUP (ORDER BY
            qpm.displayed_order) 
        FROM
            que_post_mark qpm 
        WHERE
            qpm.es_id  = marks0_.es_id  
            AND qpm.sez_id = marks0_.sez_id 
        GROUP BY
            qpm.es_id ,
            qpm.sez_id) 
        ELSE NULL 
    END 
FROM
    dual) as formula2_0_ 
from
    MARKS marks0_ 
where
    marks0_.es_id =?

它将 WITHIN 标识为列并附加别名，例如 marks0_.WITHIN

我正在使用以下版本:

 spring-boot-starter-web = 1.4.0.RELEASE, spring-data-jpa:jar:1.10.2 ,hibernate-entitymanager:jar:5.1.3' hibernate-core:jar:5.1.3, hibernate-jpa-2.1-api:jar

我试图降低那些 jar 版本以使其工作，但它没有工作。

错误堆栈跟踪如下:

Caused by: java.sql.SQLSyntaxErrorException: ORA-02000: missing WITHIN keyword

    at oracle.jdbc.driver.T4CTTIoer.processError(T4CTTIoer.java:450)
    at oracle.jdbc.driver.T4CTTIoer.processError(T4CTTIoer.java:399)
    at oracle.jdbc.driver.T4C8Oall.processError(T4C8Oall.java:1059)
    at oracle.jdbc.driver.T4CTTIfun.receive(T4CTTIfun.java:522)
    at oracle.jdbc.driver.T4CTTIfun.doRPC(T4CTTIfun.java:257)
    at oracle.jdbc.driver.T4C8Oall.doOALL(T4C8Oall.java:587)
    at oracle.jdbc.driver.T4CPreparedStatement.doOall8(T4CPreparedStatement.java:225)
    at oracle.jdbc.driver.T4CPreparedStatement.doOall8(T4CPreparedStatement.java:53)
    at oracle.jdbc.driver.T4CPreparedStatement.executeForDescribe(T4CPreparedStatement.java:774)
    at oracle.jdbc.driver.OracleStatement.executeMaybeDescribe(OracleStatement.java:925)
    at oracle.jdbc.driver.OracleStatement.doExecuteWithTimeout(OracleStatement.java:1111)
    at oracle.jdbc.driver.OraclePreparedStatement.executeInternal(OraclePreparedStatement.java:4798)
    at oracle.jdbc.driver.OraclePreparedStatement.executeQuery(OraclePreparedStatement.java:4845)
    at oracle.jdbc.driver.OraclePreparedStatementWrapper.executeQuery(OraclePreparedStatementWrapper.java:1501)
    at org.hibernate.engine.jdbc.internal.ResultSetReturnImpl.extract(ResultSetReturnImpl.java:56)
    ... 136 common frames omitted

谁能帮我解决这个问题？

Answer 1

我已经通过扩展 hibernate Dialect 类解决了这个问题，如 this link 中所述

public class Oracle10gDialectExtended extends Oracle10gDialect {
    public Oracle10gDialectExtended() {
        super();
        registerKeyword("within"); //Keyword has to be in lowercase.
    }
}

用这个新类设置“hibernate.dialect”属性。

Properties.setProperty("hibernate.dialect", "com.example.Oracle10gDialectExtended");