Mysterious List behaviour
Hi,
I have a small function, and I don't understand it's behaviour. I hope some can explain me what happens:
publicstatic List findList(JdbcSupport jsi, List list, RMObjectJdbc cls,long Id, String sql, Connection c)throws Exception{
PreparedStatement ps = jsi.prepareStatement(sql,c);
ps.setLong(1, Id);
ResultSet srs = ps.executeQuery();
int p = 0;// a query is done and has three results
for (; srs.next(); ){
RMObject e = cls.getByIdSimple(srs.getLong(1), c);
list.add(e);//result is added to list
System.out.println("findList:"+e.getClass().getName()+":"+Id+","+0+","+e.get_id()+","+e.hashCode());
//check properties, "e" really exist
System.out.println("+"+list.get(p).hashCode());
//also the hashcode of "e" is printed corrctly
p++;
}
for(int i=0;i<list.size();i++){
System.out.println(i+"-"+list.get(i).hashCode());
// but here, all the elements of the list are replaced by the last, how is that possible?
//that is my question
}
srs.close();
return list;
}
You can see the results of the screen-output
findList:nl.zorggemak.jdbc.orm.openehr.rm.datatypes.basic.DvIdentifierJdbcImpl:1,0,27,766399937
+766399937
findList:nl.zorggemak.jdbc.orm.openehr.rm.datatypes.basic.DvIdentifierJdbcImpl:1,0,28,766399954
+766399954
findList:nl.zorggemak.jdbc.orm.openehr.rm.datatypes.basic.DvIdentifierJdbcImpl:1,0,29,766399971
+766399971
0-766399971
1-766399971
2-766399971
So, why are all three elements of the list replaced by the last added?
It happens outside the loop.
If I don't ant this to happen, what a I do?
Thanks for any help
BertV>
