/**
* A recursive method to construct a new <code>PivotFacetField</code> object from the contents of
* the {@link NamedList}s provided by the specified shard, relative to a parent value (if this is
* not the top field in the pivot hierarchy)
*
* <p>The associated child {@link PivotFacetValue}s will be recursively built as well.
*
* @see PivotFacetValue#createFromNamedList
* @param shardNumber the id of the shard that provided this data
* @param rb The response builder of the current request
* @param owner the parent value in the current pivot (may be null)
* @param pivotValues the data from the specified shard for this pivot field, may be null or empty
* @return the new PivotFacetField, null if pivotValues is null or empty.
*/
public static PivotFacetField createFromListOfNamedLists(
int shardNumber,
ResponseBuilder rb,
PivotFacetValue owner,
List<NamedList<Object>> pivotValues) {
if (null == pivotValues || pivotValues.size() <= 0) return null;
NamedList<Object> firstValue = pivotValues.get(0);
PivotFacetField createdPivotFacetField =
new PivotFacetField(rb, owner, PivotFacetHelper.getField(firstValue));
int lowestCount = Integer.MAX_VALUE;
for (NamedList<Object> pivotValue : pivotValues) {
lowestCount = Math.min(lowestCount, PivotFacetHelper.getCount(pivotValue));
PivotFacetValue newValue =
PivotFacetValue.createFromNamedList(shardNumber, rb, createdPivotFacetField, pivotValue);
createdPivotFacetField.valueCollection.add(newValue);
}
createdPivotFacetField.shardLowestCount.put(shardNumber, lowestCount);
createdPivotFacetField.numberOfValuesContributedByShard.put(shardNumber, pivotValues.size());
return createdPivotFacetField;
}
/**
* Merges in the count contributions from the specified shard for each. This method is recursive
* if the shard data includes sub-pivots
*
* @see PivotFacetField#contributeFromShard
* @see PivotFacetField#createFromListOfNamedLists
*/
public void mergeContributionFromShard(
int shardNumber, ResponseBuilder rb, NamedList<Object> value) {
assert null != value : "can't merge in null data";
if (!shardHasContributed(shardNumber)) {
sourceShards.set(shardNumber);
count += PivotFacetHelper.getCount(value);
NamedList<NamedList<NamedList<?>>> stats = PivotFacetHelper.getStats(value);
if (stats != null) {
statsValues = PivotFacetHelper.mergeStats(statsValues, stats, rb._statsInfo);
}
NamedList<Number> shardQueryCounts = PivotFacetHelper.getQueryCounts(value);
if (shardQueryCounts != null) {
queryCounts = PivotFacetHelper.mergeQueryCounts(queryCounts, shardQueryCounts);
}
SimpleOrderedMap<SimpleOrderedMap<Object>> shardRanges = PivotFacetHelper.getRanges(value);
if (shardRanges != null) {
if (rangeCounts == null) {
rangeCounts = new LinkedHashMap<>(shardRanges.size() / 2);
}
RangeFacetRequest.DistribRangeFacet.mergeFacetRangesFromShardResponse(
rangeCounts, shardRanges);
}
}
List<NamedList<Object>> shardChildPivots = PivotFacetHelper.getPivots(value);
// sub pivot -- we may not have seen this yet depending on refinement
if (null == childPivot) {
childPivot =
PivotFacetField.createFromListOfNamedLists(shardNumber, rb, this, shardChildPivots);
} else {
childPivot.contributeFromShard(shardNumber, rb, shardChildPivots);
}
}
private void contributeValueFromShard(
int shardNumber, ResponseBuilder rb, NamedList<Object> shardValue) {
incrementShardValueCount(shardNumber);
Comparable value = PivotFacetHelper.getValue(shardValue);
int count = PivotFacetHelper.getCount(shardValue);
// We're changing values so we most mark the collection as dirty
valueCollection.markDirty();
if ((!shardLowestCount.containsKey(shardNumber)) || shardLowestCount.get(shardNumber) > count) {
shardLowestCount.put(shardNumber, count);
}
PivotFacetValue facetValue = valueCollection.get(value);
if (null == facetValue) {
// never seen before, we need to create it from scratch
facetValue = PivotFacetValue.createFromNamedList(shardNumber, rb, this, shardValue);
this.valueCollection.add(facetValue);
} else {
facetValue.mergeContributionFromShard(shardNumber, rb, shardValue);
}
}
