Looping through a set of data

Question

seq     |     id|     Name|     TotalPc
1     |     22|     ABA |     20
1     |     23|     ABB |     20
2     |     24|     ABC |     20
3     |     25|     ABD |     20
3     |     26|     ABE |     20
3     |     27|     ABF |     20
4     |     28|     ABG |     20
5     |     29|     ABH |     20
6     |     30|     ABI |     20
6     |     31|     ABJ |     20
6     |     32|     ABK |     20
6     |     33|     ABL |     20The above result is returned in a resultset. What i would like to achieve is store these rows in an object that is structured as shown below
public class Name{
     String seq
     String name;
     Arraylist namePcs = new ArrayList()
public class NamePcs{
     String id;
     String totalPcs;
}Now as you can see in the data, some of the rows belong to the same element. For example, all those with seq=6 should be stored in the same object because they below to the same group i.e. 6.
I tried several combinations of approaches but i always seem to either miss the last one, duplicate them or exhaust the resultset.
Here are some examples of what i tried to do.
Example 1 - This example copies every name into every element.
while(rs.next()){
     Name name = new Name();
     name.seq = rs.getString("seq");
     name.name = rs.getStrign("name");
     NamePcs namePcs= new NamePcs()
     namePcs.id = rs.getString("id");
     namePcs.totalPcs = rs.getString("totalPcs")
     name.namePcs.add(namePcs);
seq_no = rs.getString("seq");
}Example 2 - In this example i try to save the child elements only if the seq number is the same but i still get duplicates.
String seq_no = "";
while(rs.next){
     if(!seq_no.equals(rs.getString("seq_no"){
               Name name = new Name();
               name.seq = rs.getString("seq");
               name.name = rs.getStrign("name");
     if(seq_no.equals(rs.getString("seq_no");{
          NamePcs namePcs= new NamePcs()
          namePcs.id = rs.getString("id");
          namePcs.totalPcs = rs.getString("totalPcs")
          name.namePcs.add(namePcs);
seq_no = rs.getString("seq");
}I also tried an inner while loop with an inner rs.next() but that exhausts the resultset. Is there a better way to do this? Thansk in advanc.e
Edited by: ziggy on Sep 23, 2008 9:10 AM

Answer 1

Hi,
Sorry for not being clear enough. The above was just a quick example to try and show what i am trying to achieve.
What i am trying to achieve is to store the data in objects. The data itself has a one to many relationship. This means that many names will be related to the same sequence number. I would like to store the common names (i.e. those with the same seq no) in the same object in an arraylist.
Maybe this data structure makes more sense
public class seq{
     String seq     
     Arraylist namePcs = new ArrayList() //will contain all names with the same sequence
public class NamePcs{
     String id;
     String name;
     String totalPcs;
}What im hoping to achieve is the following
- The seq object will contain one seq row (either 1,2,3,4,5,6)
- Array list in the seq object should contain all the rows for each individual seq.
- As an example if seq[3].seq = 6, the seq.namePcs() should contain all NamePcs objects tha t have id's (30,31,32,33).
Here is what i am hoping to achieve as the end result (for the first 6 rows)
seq[0]
     seq = 1
     namePcs[0]
          id = 22
          name = ABA
          TotalPcs = 20
     namePcs[1]
          id = 23
          name = ABB
          TotalPcs = 20
seq[1]
     seq = 2
     namePcs[0]
          id = 24
          name = ABC
          TotalPcs = 20
seq[2]
     seq = 3
     namePcs[0]
          id = 25
          name = ABD
          TotalPcs = 20
     namePcs[1]
          id = 26
          name = ABE
          TotalPcs = 20
     namePcs[1]
          id = 27
          name = ABF
          TotalPcs = 20               I hope that made it a bit clear.
Thanks
Edited by: ziggy on Sep 23, 2008 9:41 AM