Question

我在数据库中有一个视图，我在其上构建了一个REST API。 REST API的输出看起来像两个表的笛卡尔积，它们是视图的一部分。任何人都有任何想法为什么会发生？

以下是JSON和SQL的相关java，sql代码和输出

Bulkdeals.java

    @Entity
    @Table(name = "BULKDEALS")
    @XmlRootElement
    @NamedQueries({
        @NamedQuery(name = "Bulkdeals.findAll", query = "SELECT b FROM Bulkdeals b"),
        @NamedQuery(name = "Bulkdeals.findByTradeDate", query = "SELECT b FROM Bulkdeals b WHERE b.tradeDate = :tradeDate"),
        @NamedQuery(name = "Bulkdeals.findByDate", query = "SELECT b FROM Bulkdeals b WHERE b.tradeDate BETWEEN :tradeDate1 AND :tradeDate2")
})

BulkdealsFacadeREST.java

//Usage: http://localhost:8080/MA/webresources/db.bulkdeals/date/29-JUL-15
@GET
@Path("/date/{Fordate}")
@Produces({ MediaType.APPLICATION_JSON})
public List<Bulkdeals> findRange(@PathParam("Fordate") Date tradeDate) {
    return (List<Bulkdeals>) em.createNamedQuery("Bulkdeals.findByTradeDate").setParameter("tradeDate", tradeDate).getResultList();
}

  //Usage: http://localhost:8080/MA/webresources/db.bulkdeals/date/29-JUL-15/05-SEP-2016

@GET
@Path("/date/{Fromdate}/{Todate}")
@Produces({ MediaType.APPLICATION_JSON})
public List<Bulkdeals> findRange1( @PathParam("Fromdate") Date tradeDate1, @PathParam("Todate") Date tradeDate2 ) {
    return (List<Bulkdeals>) em.createNamedQuery("Bulkdeals.findByDate").setParameter("tradeDate1", tradeDate1).setParameter("tradeDate2", tradeDate2).getResultList();
 }

查看

CREATE OR REPLACE FORCE EDITIONABLE VIEW "TA_USER"."BULKDEALS"
("TRADE_DATE", "SYMBOL", "NAME", "CLIENT", "BUYSELL", "QUANTITY", "TRADEPRICE") AS
SELECT TRADE_DATE, SYMBOL, NAME,  CLIENT,  BUYSELL,  QUANTITY,  TRADEPRICE
FROM STOCKS_DW.TB_BLOCKDEALS 
union 
SELECT TRADE_DATE, SYMBOL, NAME, CLIENT,  BUYSELL, QUANTITY,TRADEPRICE
FROM STOCKS_DW.TB_BULKDEALS
order by 1 desc;

JSON

 {"bulkdeals":[{"buysell":"SELL","client":"ASHISH  DHAWAN","name":"Allsec Technologies Limit","quantity":99744,"symbol":"ALLSEC","tradeDate":"2015-07-29T00:00:00+05:30","tradeprice":34},
 {"buysell":"SELL","client":"ASHISH  DHAWAN","name":"Allsec Technologies Limit","quantity":99744,"symbol":"ALLSEC","tradeDate":"2015-07-29T00:00:00+05:30","tradeprice":34},
 {"buysell":"SELL","client":"ASHISH  DHAWAN","name":"Allsec Technologies Limit","quantity":99744,"symbol":"ALLSEC","tradeDate":"2015-07-29T00:00:00+05:30","tradeprice":34},
 {"buysell":"SELL","client":"ASHISH  DHAWAN","name":"Allsec Technologies Limit","quantity":99744,"symbol":"ALLSEC","tradeDate":"2015-07-29T00:00:00+05:30","tradeprice":34},{"buysell":"SELL","client":"ASHISH  DHAWAN","name":"Allsec Technologies Limit","quantity":99744,"symbol":"ALLSEC","tradeDate":"2015-07-29T00:00:00+05:30","tradeprice":34},
 {"buysell":"SELL","client":"ASHISH  DHAWAN","name":"Allsec Technologies Limit","quantity":99744,"symbol":"ALLSEC","tradeDate":"2015-07-29T00:00:00+05:30","tradeprice":34},
 {"buysell":"SELL","client":"ASHISH  DHAWAN","name":"Allsec Technologies Limit","quantity":99744,"symbol":"ALLSEC","tradeDate":"2015-07-29T00:00:00+05:30","tradeprice":34},{"buysell":"SELL","client":"ASHISH  DHAWAN","name":"Allsec Technologies Limit","quantity":99744,"symbol":"ALLSEC","tradeDate":"2015-07-29T00:00:00+05:30","tradeprice":34},{"buysell":"SELL","client":"ASHISH  DHAWAN","name":"Allsec Technologies Limit","quantity":99744,"symbol":"ALLSEC","tradeDate":"2015-07-29T00:00:00+05:30","tradeprice":34},{"buysell":"SELL","client":"ASHISH  DHAWAN","name":"Allsec Technologies Limit","quantity":99744,"symbol":"ALLSEC","tradeDate":"2015-07-29T00:00:00+05:30","tradeprice":34},{"buysell":"SELL","client":"ASHISH  DHAWAN","name":"Allsec Technologies Limit","quantity":99744,"symbol":"ALLSEC","tradeDate":"2015-07-29T00:00:00+05:30","tradeprice":34},{"buysell":"SELL","client":"ASHISH  DHAWAN","name":"Allsec Technologies Limit","quantity":99744,"symbol":"ALLSEC","tradeDate":"2015-07-29T00:00:00+05:30","tradeprice":34},{"buysell":"SELL","client":"ASHISH  DHAWAN","name":"Allsec Technologies Limit","quantity":99744,"symbol":"ALLSEC","tradeDate":"2015-07-29T00:00:00+05:30","tradeprice":34},{"buysell":"SELL","client":"ASHISH  DHAWAN","name":"Allsec Technologies Limit","quantity":99744,"symbol":"ALLSEC","tradeDate":"2015-07-29T00:00:00+05:30","tradeprice":34},{"buysell":"SELL","client":"ASHISH  DHAWAN","name":"Allsec Technologies Limit","quantity":99744,"symbol":"ALLSEC","tradeDate":"2015-07-29T00:00:00+05:30","tradeprice":34},{"buysell":"SELL","client":"ASHISH  DHAWAN","name":"Allsec Technologies Limit","quantity":99744,"symbol":"ALLSEC","tradeDate":"2015-07-29T00:00:00+05:30","tradeprice":34},{"buysell":"SELL","client":"ASHISH  DHAWAN","name":"Allsec Technologies Limit","quantity":99744,"symbol":"ALLSEC","tradeDate":"2015-07-29T00:00:00+05:30","tradeprice":34},{"buysell":"SELL","client":"ASHISH  DHAWAN","name":"Allsec Technologies Limit","quantity":99744,"symbol":"ALLSEC","tradeDate":"2015-07-29T00:00:00+05:30","tradeprice":34},{"buysell":"SELL","client":"ASHISH  DHAWAN","name":"Allsec Technologies Limit","quantity":99744,"symbol":"ALLSEC","tradeDate":"2015-07-29T00:00:00+05:30","tradeprice":34},{"buysell":"SELL","client":"ASHISH  DHAWAN","name":"Allsec Technologies Limit","quantity":99744,"symbol":"ALLSEC","tradeDate":"2015-07-29T00:00:00+05:30","tradeprice":34},{"buysell":"SELL","client":"ASHISH  DHAWAN","name":"Allsec Technologies Limit","quantity":99744,"symbol":"ALLSEC","tradeDate":"2015-07-29T00:00:00+05:30","tradeprice":34},{"buysell":"SELL","client":"ASHISH  DHAWAN","name":"Allsec Technologies Limit","quantity":99744,"symbol":"ALLSEC","tradeDate":"2015-07-29T00:00:00+05:30","tradeprice":34},{"buysell":"SELL","client":"ASHISH  DHAWAN","name":"Allsec Technologies Limit","quantity":99744,"symbol":"ALLSEC","tradeDate":"2015-07-29T00:00:00+05:30","tradeprice":34}]}

SQL OUTPUT

SELECT TRADE_DATE, SYMBOL, NAME, CLIENT, BUYSELL, QUANTITY, TRADEPRICE FROM BULKDEALS where trade_date = '29-JUL-2015' ;

 29-JUL-15  ALLSEC  Allsec Technologies Limit   ASHISH  DHAWAN  SELL    99744   34
 29-JUL-15  ARCHIDPLY   Archidply Industries Limi   BP FINTRADE PRIVATE LIMITED BUY 129910  53.98
 29-JUL-15  ARCHIDPLY   Archidply Industries Limi   BP FINTRADE PRIVATE LIMITED SELL    124880  54.09
 29-JUL-15  BROOKS  Brooks Lab Limited  GKN SECURITIES  BUY 84900   85.54
 29-JUL-15  BROOKS  Brooks Lab Limited  GKN SECURITIES  SELL    84900   84.13
 29-JUL-15  CEREBRAINT  Cerebra Int Tech Ltd    SHAH NIRAJ RAJNIKANT    BUY 49036   15.14
 29-JUL-15  CEREBRAINT  Cerebra Int Tech Ltd    SHAH NIRAJ RAJNIKANT    SELL    490000  15.23
 29-JUL-15  DOLPHINOFF  Dolphin Offshore Enterpri   CREST CAPITAL & INVESTMENT  BUY 111000  122.01
 29-JUL-15  DOLPHINOFF  Dolphin Offshore Enterpri   PRIYANKA FINANCE PVT LTD    SELL    100000  121
 29-JUL-15  GMBREW  GM Breweries Ltd.   BP FINTRADE PRIVATE LIMITED BUY 153273  302.21
 29-JUL-15  GMBREW  GM Breweries Ltd.   BP FINTRADE PRIVATE LIMITED SELL    147521  303.78

REST API的输出与数据库上的直接查询不匹配

0 个答案: