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/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.solr.search.facet;
import java.util.ArrayList;
import java.util.Collection;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import org.apache.solr.common.params.FacetParams;
import org.apache.solr.common.util.SimpleOrderedMap;
public class FacetRangeMerger extends FacetRequestSortedMerger {
FacetBucket beforeBucket;
FacetBucket afterBucket;
FacetBucket betweenBucket;
Object actual_end = null;
public FacetRangeMerger(FacetRange freq) {
super(freq);
}
@Override
public void merge(Object facetResult, Context mcontext) {
super.merge(facetResult, mcontext);
merge((SimpleOrderedMap) facetResult , mcontext);
}
@Override
public void sortBuckets(final FacetRequest.FacetSort sort) {
// regardless of sort or mincount, every shard returns a consistent set of buckets which are already in the correct order
sortedBuckets = new ArrayList<>( buckets.values() );
}
@Override
public void finish(Context mcontext) {
// nothing to do
}
@Override
Map getRefinementSpecial(Context mcontext, Map refinement, Collection tagsWithPartial) {
if (!tagsWithPartial.isEmpty()) {
// Since 'other' buckets will always be included, we only need to worry about subfacets being partial.
refinement = getRefinementSpecial(mcontext, refinement, tagsWithPartial, beforeBucket, FacetParams.FacetRangeOther.BEFORE.toString());
refinement = getRefinementSpecial(mcontext, refinement, tagsWithPartial, afterBucket, FacetParams.FacetRangeOther.AFTER.toString());
refinement = getRefinementSpecial(mcontext, refinement, tagsWithPartial, betweenBucket, FacetParams.FacetRangeOther.BETWEEN.toString());
// if we need an actual end to compute either of these buckets,
// and it's been returned to us by at least one shard
// send it back as part of the refinement request
if ( (!freq.hardend) &&
actual_end != null &&
refinement != null &&
(refinement.containsKey(FacetParams.FacetRangeOther.AFTER.toString()) ||
refinement.containsKey(FacetParams.FacetRangeOther.BETWEEN.toString())) ) {
refinement.put("_actual_end", actual_end);
}
}
return refinement;
}
private Map getRefinementSpecial(Context mcontext, Map refinement, Collection tagsWithPartial, FacetBucket bucket, String label) {
if (null == bucket) {
return refinement;
}
Map bucketRefinement = bucket.getRefinement(mcontext, tagsWithPartial);
if (bucketRefinement != null) {
refinement = refinement == null ? new HashMap<>(2) : refinement;
refinement.put(label, bucketRefinement);
}
return refinement;
}
public void merge(@SuppressWarnings("rawtypes") SimpleOrderedMap facetResult, Context mcontext) {
boolean all = freq.others.contains(FacetParams.FacetRangeOther.ALL);
if (all || freq.others.contains(FacetParams.FacetRangeOther.BEFORE)) {
Object o = facetResult.get(FacetParams.FacetRangeOther.BEFORE.toString());
if (o != null) {
if (beforeBucket == null) {
beforeBucket = newBucket(null, mcontext);
}
beforeBucket.mergeBucket((SimpleOrderedMap)o, mcontext);
}
}
if (all || freq.others.contains(FacetParams.FacetRangeOther.AFTER)) {
Object o = facetResult.get(FacetParams.FacetRangeOther.AFTER.toString());
if (o != null) {
if (afterBucket == null) {
afterBucket = newBucket(null, mcontext);
}
afterBucket.mergeBucket((SimpleOrderedMap)o , mcontext);
}
}
if (all || freq.others.contains(FacetParams.FacetRangeOther.BETWEEN)) {
Object o = facetResult.get(FacetParams.FacetRangeOther.BETWEEN.toString());
if (o != null) {
if (betweenBucket == null) {
betweenBucket = newBucket(null, mcontext);
}
betweenBucket.mergeBucket((SimpleOrderedMap)o , mcontext);
}
}
Object shard_actual_end = facetResult.get(FacetRange.ACTUAL_END_JSON_KEY);
if (null != shard_actual_end) {
if (null == actual_end) {
actual_end = shard_actual_end;
} else {
assert actual_end.equals(shard_actual_end) : actual_end + " != " + shard_actual_end;
}
}
@SuppressWarnings({"unchecked", "rawtypes"})
List bucketList = (List) facetResult.get("buckets");
mergeBucketList(bucketList , mcontext);
}
@Override
@SuppressWarnings({"unchecked", "rawtypes"})
public Object getMergedResult() {
// TODO: use sortedBuckets
SimpleOrderedMap result = new SimpleOrderedMap(4);
List resultBuckets = new ArrayList<>(buckets.size());
for (FacetBucket bucket : buckets.values()) {
if (bucket.getCount() < freq.mincount) {
continue;
}
resultBuckets.add( bucket.getMergedBucket() );
}
result.add("buckets", resultBuckets);
if (beforeBucket != null) {
result.add(FacetParams.FacetRangeOther.BEFORE.toString(), beforeBucket.getMergedBucket());
}
if (afterBucket != null) {
result.add(FacetParams.FacetRangeOther.AFTER.toString(), afterBucket.getMergedBucket());
}
if (betweenBucket != null) {
result.add(FacetParams.FacetRangeOther.BETWEEN.toString(), betweenBucket.getMergedBucket());
}
return result;
}
}
