如何在加入 HQL 时应用 2 个条件

Question

如何在 HQL 中加入 2 个条件？我想为以下查询编写 HQL：

之前的 HQL：

StringBuffer sb = new StringBuffer();
        sb.append("from Hardwarekomponente h");
        sb.append(" left join fetch h.hwCategory4 c4");
        sb.append(" left join fetch c4.hwCategory3 c3");
        sb.append(" where h.konto.sisnetConfigSwitch = 1");
        sb.append(" and h.technischeNr is not null");
        sb.append(" and upper(c3.hwCategory3) like :cat3");

上一个SQL:

SELECT  *
FROM     HARDWAREKOMPONENTE h 
         INNER JOIN V_MD_HARDWARE_CAT4 c4 ON h.Hw_Kategorie4_Id=c4.Hardware_Cat4_Id 
         INNER JOIN V_MD_HARDWARE_CAT3 c3 ON c4.Hardware_Cat3_Id=c3.Hardware_Cat3_Id 
         LEFT OUTER JOIN V_MD_ACCOUNT k ON h.Konto_Id=k.Account_Id  
WHERE    (h.Technische_Nr is not null) and (upper(c3.Hardware_Cat3) like '%SWITCH%') and k.Sisnet_Config_Switch = 1;

但现在由于一些变化，我想将 2 个条件与连接一起移动以获得一些先前查询没有给我的输出：

新的 HQL（我正在尝试，但它对 with operator 失败）：

StringBuffer sb = new StringBuffer();
        sb.append("from Hardwarekomponente h ");
        sb.append(" left join fetch h.hwCategory4 c4 with (upper(c3.hwCategory3) like :cat3) ");
        sb.append(" left join fetch c4.hwCategory3 c3 with (h.konto.sisnetConfigSwitch = 1)  ");
        // sb.append(" where h.konto.kontoId = :account");
        sb.append(" where ");
        sb.append("  h.technischeNr is not null ");

新 SQL:

SELECT  *
FROM     HARDWAREKOMPONENTE h 
         INNER JOIN V_MD_HARDWARE_CAT4 c4 ON h.Hw_Kategorie4_Id=c4.Hardware_Cat4_Id 
         INNER JOIN V_MD_HARDWARE_CAT3 c3 ON c4.Hardware_Cat3_Id=c3.Hardware_Cat3_Id AND (upper(c3.Hardware_Cat3) like '%SWITCH%')
         LEFT OUTER JOIN V_MD_ACCOUNT k ON h.Konto_Id=k.Account_Id AND k.Sisnet_Config_Switch = 1
WHERE    (h.Technische_Nr is not null);

所以，我的问题是如何添加或告诉 Hibernate 添加连接条件？

Answer 1

在第一个 with 语句中，您引用了一个尚未定义的别名 (c3)。

我会按如下方式构建查询：

StringBuffer sb = new StringBuffer();
  sb.append("from Hardwarekomponente h ");
  sb.append(" left join h.konto k with (k.sisnetConfigSwitch = 1)");  
  sb.append(" left join h.hwCategory4 c4");
  sb.append(" left join c4.hwCategory3 c3 with (upper(c3.hwCategory3) like :cat3) ");
  sb.append(" where ");
  sb.append("  h.technischeNr is not null ");

如何在加入 HQL 时应用 2 个条件

how can I apply 2 conditions in join in HQL

java

sql

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hibernate

hql