/**
* It adds a sequence from an array of string that we have to interpret
*
* @param integers
* @param sequenceID
*/
public void addSequence(String[] integers, int sequenceID) {
long timestamp = -1;
Sequence sequence = new Sequence(sequences.size());
sequence.setID(sequenceID);
Itemset itemset = new Itemset();
int inicio = 0;
Map<Item, Boolean> counted = new HashMap<Item, Boolean>();
for (int i = inicio; i < integers.length; i++) {
if (integers[i].codePointAt(0) == '<') { // Timestamp
String value = integers[i].substring(1, integers[i].length() - 1);
timestamp = Long.parseLong(value);
itemset.setTimestamp(timestamp);
} else if (integers[i].equals("-1")) { // end of an itemset
long time = itemset.getTimestamp() + 1;
sequence.addItemset(itemset);
itemset = new Itemset();
itemset.setTimestamp(time);
} else if (integers[i].equals("-2")) { // end of a sequence
sequences.add(sequence);
} else {
// extract the value for an item
Item item = itemFactory.getItem(Integer.parseInt(integers[i]));
if (counted.get(item) == null) {
counted.put(item, Boolean.TRUE);
BitSet appearances = frequentItems.get(item);
if (appearances == null) {
appearances = new BitSet();
frequentItems.put(item, appearances);
}
appearances.set(sequence.getId());
}
itemset.addItem(item);
}
}
}
