// Load the hash table @Override public void cleanUpInputFileChangedOp() throws HiveException { try { if (firstRow) { // generate the map metadata generateMapMetaData(); firstRow = false; } loadHashTable(); } catch (SerDeException e) { e.printStackTrace(); throw new HiveException(e); } }
@Override public void processOp(Object row, int tag) throws HiveException { try { if (firstRow) { // generate the map metadata generateMapMetaData(); firstRow = false; } // get alias alias = order[tag]; // alias = (byte)tag; if ((lastAlias == null) || (!lastAlias.equals(alias))) { nextSz = joinEmitInterval; } // compute keys and values as StandardObjects AbstractMapJoinKey key = JoinUtil.computeMapJoinKeys( row, joinKeys.get(alias), joinKeysObjectInspectors.get(alias)); ArrayList<Object> value = JoinUtil.computeValues( row, joinValues.get(alias), joinValuesObjectInspectors.get(alias), joinFilters.get(alias), joinFilterObjectInspectors.get(alias), noOuterJoin); // Add the value to the ArrayList storage.get((byte) tag).add(value); for (Byte pos : order) { if (pos.intValue() != tag) { MapJoinObjectValue o = mapJoinTables.get(pos).get(key); MapJoinRowContainer<ArrayList<Object>> rowContainer = rowContainerMap.get(pos); // there is no join-value or join-key has all null elements if (o == null || key.hasAnyNulls()) { if (noOuterJoin) { storage.put(pos, emptyList); } else { storage.put(pos, dummyObjVectors[pos.intValue()]); } } else { rowContainer.reset(o.getObj()); storage.put(pos, rowContainer); } } } // generate the output records checkAndGenObject(); // done with the row storage.get((byte) tag).clear(); for (Byte pos : order) { if (pos.intValue() != tag) { storage.put(pos, null); } } } catch (SerDeException e) { e.printStackTrace(); throw new HiveException(e); } }