source: src/main/java/agents/anac/y2014/AgentYK/PairBidElementIterator.java

package agents.anac.y2014.AgentYK;

import java.util.ArrayList;
import java.util.List;
import java.util.NoSuchElementException;

import genius.core.Bid;
import genius.core.issue.Issue;

public class PairBidElementIterator implements java.util.Iterator<PairBidElement>{
        private Bid bid;
        private List<Integer> issueNrs;
        private int index1,index2;
        
        public PairBidElementIterator(Bid bid) {
                this.bid = new Bid(bid);
                this.issueNrs = new ArrayList<Integer>();
                for(Issue issue:this.bid.getIssues()) {
                        this.issueNrs.add(issue.getNumber());
                }
                this.index1 = 0;
                this.index2 = 1;
        }
        
        @Override
        public boolean hasNext() {
                if(index1 <= (this.issueNrs.size() - 2) && index2 <= (this.issueNrs.size() - 1)) {
                        return true;
                } else {
                        return false;
                }
        }

        @Override
        public PairBidElement next() throws NoSuchElementException{
                if(this.hasNext()) {
                        int fstIssueNr = this.issueNrs.get(this.index1);
                        int sndIssueNr = this.issueNrs.get(this.index2);
                        try {
                                BidElement fst = new BidElement(fstIssueNr, this.bid.getValue(fstIssueNr));
                                BidElement snd = new BidElement(sndIssueNr, this.bid.getValue(sndIssueNr));
                                this.index2++;
                                if(this.index2 >= this.issueNrs.size()) {
                                        this.index1++;
                                        this.index2 = this.index1 + 1;
                                }
                                return new PairBidElement(fst, snd);
                        } catch(Exception e){}
                } else {
                        throw new NoSuchElementException();
                }
                return null;
        }

        @Override
        public void remove() throws UnsupportedOperationException {
                throw new UnsupportedOperationException();
        }
        
}