I have the following SQL query:
SELECT CONNECTIONDATE AS UNLOAD,
SUBSTR(ROUTECODE,1,(LENGTH(ROUTECODE)-2)) AS ROUTE,
COUNT(SUBSTR(ROUTECODE,1,(LENGTH(ROUTECODE)-2))) AS FREQUENCY
FROM RouteTableSynonym RC1
WHERE RC1.ROUTECONNECTIONTYPE = 'INBOUND'
and RC1.CONNECTIONTIME >= TO_TIMESTAMP('<sdate>', 'DD-MM-YYYY HH24:MI:SS')
and RC1.CONNECTIONTIME <= TO_TIMESTAMP('<edate>', 'DD-MM-YYYY HH24:MI:SS')
and RC1.LOGISTICSPOINTID in (SELECT DISTINCT RCO1.LOGISTICSPOINTID
FROM RouteOrderTableSynonym RCO1
WHERE RCO1.NAMC = '<namc>')
GROUP BY CONNECTIONDATE, SUBSTR(ROUTECODE,1,(LENGTH(ROUTECODE)-2))
ORDER BY CONNECTIONDATE, ROUTE;
All values designated by '< var_name >' are replace with the values that being queried. I also have this entity class that will store the result of this query:
import java.util.Date;
public class DD_BlackoutRouteFrequencies {
private Date rte_day;
private String route;
private int freq;
private int delayedFreq;
public Date getRte_day() {
return rte_day;
}
public void setRte_day(Date rte_day) {
this.rte_day = rte_day;
}
public String getRoute() {
return route;
}
public void setRoute(String route) {
this.route = route;
}
public int getFreq() {
return freq;
}
public void setFreq(int freq) {
this.freq = freq;
}
public int getDelayedFreq() {
return delayedFreq;
}
public void setDelayedFreq(int delayedFreq) {
this.delayedFreq = delayedFreq;
}
}
I execute the query like this :
try{
SQLQuery sqlquery = session.createSQLQuery(query);
sqlquery.addEntity(DD_BlackoutRouteFrequencies.class);
results = sqlquery.list();
logger.debug(results.size());
System.out.println("Frequnecy Results size: "+results.size());
}catch(Exception e){
logger.error("Exception ", e);
throw new RuntimeException("SQL Exception getting Blackout Route Frequencies: "+ e.getMessage());
}
The problem I am having is that I cannot figure out how to do the hibernate mapping for this entity to receive the results of this query which draws its results from two different tables.
Do I have to do the hibernate mapping for both table used in the query and then map the entity?
You can also get an instance of a map. eg:
SQLQuery sqlQuery = session.createSQLQuery(sql);
// positional parameters (using ?)
sqlQuery.setString(0, sdate);
sqlQuery.setString(1, edate);
sqlQuery.setString(2, namc);
// scalar values for each column
sqlQuery.addScalar("UNLOAD", Hibernate.STRING);
sqlQuery.addScalar("ROUTE", Hibernate.STRING);
sqlQuery.addScalar("FREQUENCY ", Hibernate.INTEGER);
sqlQuery.setResultTransformer(CriteriaSpecification.ALIAS_TO_ENTITY_MAP);
List<Map<String, Object>> list = sqlQuery.list();
for (Map<String, Object> map : list) {
System.out.println(map.get("UNLOAD"));
System.out.println(map.get("ROUTE"));
System.out.println(map.get("FREQUENCY"));
}
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