java - JOOQ selectQuery for Record5

我是JOOQ的新手。

而且我需要使用SelectQuery并返回Result，但是它的返回类型是Record。是否可以在Record5中使用selectQuery？还是有其他解决方案？

    SelectQuery<Record> query = db.selectQuery();
    query.addSelect(WARE.NAME, RECEIPTITEM.SALEPRICE, RECEIPTITEM.QUANTITY, RECEIPT.TSCCREATED, WARE.WARECATEGORYID);
    query.addFrom(RECEIPT
            .join(RECEIPTITEM).on(RECEIPT.ID.eq(RECEIPTITEM.RECEIPTID))
            .join(OUTLET).on(OUTLET.ID.eq(RECEIPT.OUTLETID))
            .join(WARE).on(WARE.ID.eq(RECEIPTITEM.WAREID)));
    query.addConditions(RECEIPT.TSCCREATED.between(start, end)
            .and(OUTLET.OWNERID.eq(ownerId)));
    if (outletId != null) {
        query.addConditions(RECEIPT.OUTLETID.eq(outletId));
    }
    if (merchantId != null) {
        query.addConditions(RECEIPT.MERCHID.eq(merchantId));
    }

最佳答案

您不能使用jOOQ创建SelectQuery<Record5<...>>类型。

原因是SelectQuery（which is part of the model API）允许您继续通过SelectQuery.addSelect()向其添加新列（这是您自己完成的）。每个此类调用都会使Record5<...>类型无效。

但是，如果动态部分只是附加条件，则不必使用模型API来构造动态SQL。您可以这样重写查询：

Condition condition = RECEIPT.TSCCREATED.between(start, end)
    .and(OUTLET.OWNERID.eq(ownerId));

if (outletId != null) {
    condition = condition.and(RECEIPT.OUTLETID.eq(outletId));
}
if (merchantId != null) {
    condition = condition.and(RECEIPT.MERCHID.eq(merchantId));
}

Select<Record5<String, BigDecimal, Integer, Timestamp, Long>> select =
db.select(
       WARE.NAME,
       RECEIPTITEM.SALEPRICE,
       RECEIPTITEM.QUANTITY,
       RECEIPT.TSCCREATED,
       WARE.WARECATEGORYID)
  .from(RECEIPT
      .join(RECEIPTITEM).on(RECEIPT.ID.eq(RECEIPTITEM.RECEIPTID))
      .join(OUTLET).on(OUTLET.ID.eq(RECEIPT.OUTLETID))
      .join(WARE).on(WARE.ID.eq(RECEIPTITEM.WAREID)))
  .where(condition);

关于java - JOOQ selectQuery for Record5，我们在Stack Overflow上找到一个类似的问题：https://stackoverflow.com/questions/32453234/