private static List<Serializable> combineAggregationResults(
BrokerRequest brokerRequest,
List<Serializable> aggregationResult1,
List<Serializable> aggregationResult2) {
if (aggregationResult1 == null) {
return aggregationResult2;
}
if (aggregationResult2 == null) {
return aggregationResult1;
}
List<List<Serializable>> aggregationResultsList = new ArrayList<List<Serializable>>();
for (int i = 0; i < brokerRequest.getAggregationsInfoSize(); ++i) {
aggregationResultsList.add(new ArrayList<Serializable>());
if (aggregationResult1.get(i) != null) {
aggregationResultsList.get(i).add(aggregationResult1.get(i));
}
if (aggregationResult2.get(i) != null) {
aggregationResultsList.get(i).add(aggregationResult2.get(i));
}
}
List<Serializable> retAggregationResults = new ArrayList<Serializable>();
List<AggregationFunction> aggregationFunctions =
AggregationFunctionFactory.getAggregationFunction(brokerRequest);
for (int i = 0; i < aggregationFunctions.size(); ++i) {
retAggregationResults.add(
(Serializable)
aggregationFunctions
.get(i)
.combine(aggregationResultsList.get(i), CombineLevel.INSTANCE)
.get(0));
}
return retAggregationResults;
}
private static Map<String, Serializable> mergeTwoGroupedResults(
AggregationInfo aggregationInfo,
Map<String, Serializable> map1,
Map<String, Serializable> map2) {
if (map1 == null) {
return map2;
}
if (map2 == null) {
return map1;
}
AggregationFunction aggregationFunction = AggregationFunctionFactory.get(aggregationInfo, true);
for (String key : map2.keySet()) {
if (map1.containsKey(key)) {
map1.put(key, aggregationFunction.combineTwoValues(map1.get(key), map2.get(key)));
} else {
map1.put(key, map2.get(key));
}
}
return map1;
}
public static void mergeTwoBlocks(
BrokerRequest brokerRequest,
IntermediateResultsBlock mergedBlock,
IntermediateResultsBlock blockToMerge) {
// Sanity check
if (blockToMerge == null) {
return;
}
if (mergedBlock == null) {
mergedBlock = blockToMerge;
return;
}
// Combine NumDocsScanned
mergedBlock.setNumDocsScanned(
mergedBlock.getNumDocsScanned() + blockToMerge.getNumDocsScanned());
// Combine TotalDocs
mergedBlock.setTotalDocs(mergedBlock.getTotalDocs() + blockToMerge.getTotalDocs());
// Debug mode enable : Combine SegmentStatistics and TraceInfo
if (brokerRequest.isEnableTrace()) {
mergedBlock.getSegmentStatistics().addAll(blockToMerge.getSegmentStatistics());
mergedBlock.getTraceInfo().putAll(blockToMerge.getTraceInfo());
}
// Combine Exceptions
mergedBlock.setExceptionsList(
combineExceptions(mergedBlock.getExceptions(), blockToMerge.getExceptions()));
if (brokerRequest.isSetAggregationsInfo()) {
if (brokerRequest.isSetGroupBy()) {
// Combine AggregationGroupBy
mergedBlock.setAggregationGroupByResult1(
combineAggregationGroupByResults1(
brokerRequest,
mergedBlock.getAggregationGroupByOperatorResult(),
blockToMerge.getAggregationGroupByOperatorResult()));
} else {
// Combine Aggregations
List<AggregationFunction> aggregationFunctions =
AggregationFunctionFactory.getAggregationFunction(brokerRequest);
mergedBlock.setAggregationFunctions(aggregationFunctions);
mergedBlock.setAggregationResults(
combineAggregationResults(
brokerRequest,
mergedBlock.getAggregationResult(),
blockToMerge.getAggregationResult()));
}
} else {
// Combine Selections
if (brokerRequest.getSelections().isSetSelectionSortSequence()) {
SelectionOperatorService selectionService =
new SelectionOperatorService(
brokerRequest.getSelections(), mergedBlock.getSelectionDataSchema());
mergedBlock.setSelectionResult(
selectionService.merge(
mergedBlock.getSelectionResult(), blockToMerge.getSelectionResult()));
} else {
mergedBlock.setSelectionResult(
SelectionOperatorUtils.merge(
mergedBlock.getSelectionResult(),
blockToMerge.getSelectionResult(),
brokerRequest.getSelections().getSize()));
}
}
}