/** Emit non joined left/right full values. */
@Override
public void endWindow() {
// left join
if ((joinType == 0) || (joinType == 2)) {
for (Map<String, Object> left : tuples1) {
boolean merged = false;
for (Map<String, Object> right : tuples2) {
merged |= joinCondition.isValidJoin(left, right);
if (merged) break;
}
if (!merged) {
outport.emit(left);
}
}
}
// right join
if ((joinType == 1) || (joinType == 2)) {
for (Map<String, Object> right : tuples2) {
boolean merged = false;
for (Map<String, Object> left : tuples1) {
merged |= joinCondition.isValidJoin(left, right);
if (merged) break;
}
if (!merged) {
outport.emit(right);
}
}
}
}
@Override
public void process(Map<String, Object> tuple) {
if ((condition != null) && (!condition.isValidRow(tuple))) {
return;
}
rows.add(tuple);
}
/**
* Emit valid row join on output port.
*
* @param tuple1 Tuple from table1.
* @param tuple2 Tuple form table2.
*/
private void joinColumn(Map<String, Object> tuple1, Map<String, Object> tuple2) {
if ((tuple1 == null) || (tuple2 == null)) return;
boolean isValidJoin = true;
if (joinCondition != null) {
isValidJoin = joinCondition.isValidJoin(tuple1, tuple2);
}
if (isValidJoin) {
Map<String, Object> join = new HashMap<String, Object>(tuple1);
join.putAll(tuple2);
outport.emit(join);
}
}