Example usage for org.apache.lucene.search.grouping TopGroups TopGroups

Introduction

In this page you can find the example usage for org.apache.lucene.search.grouping TopGroups TopGroups.

Prototype

public TopGroups(SortField[] groupSort, SortField[] withinGroupSort, int totalHitCount,
            int totalGroupedHitCount, GroupDocs<T>[] groups, float maxScore) 

Source Link

Usage

From source file:org.apache.solr.handler.component.HelloHandlerComponent.java

License:Apache License

@SuppressWarnings("unchecked")
private void groupedFinishStage(final ResponseBuilder rb) {
    // To have same response as non-distributed request.
    GroupingSpecification groupSpec = rb.getGroupingSpec();
    if (rb.mergedTopGroups.isEmpty()) {
        for (String field : groupSpec.getFields()) {
            rb.mergedTopGroups.put(field, new TopGroups(null, null, 0, 0, new GroupDocs[] {}, Float.NaN));
        }//from  w w w .j  a  v a2  s. com
        rb.resultIds = new HashMap<Object, ShardDoc>();
    }

    EndResultTransformer.SolrDocumentSource solrDocumentSource = new EndResultTransformer.SolrDocumentSource() {

        public SolrDocument retrieve(ScoreDoc doc) {
            ShardDoc solrDoc = (ShardDoc) doc;
            return rb.retrievedDocuments.get(solrDoc.id);
        }

    };
    EndResultTransformer endResultTransformer;
    if (groupSpec.isMain()) {
        endResultTransformer = MAIN_END_RESULT_TRANSFORMER;
    } else if (Grouping.Format.grouped == groupSpec.getResponseFormat()) {
        endResultTransformer = new GroupedEndResultTransformer(rb.req.getSearcher());
    } else if (Grouping.Format.simple == groupSpec.getResponseFormat() && !groupSpec.isMain()) {
        endResultTransformer = SIMPLE_END_RESULT_TRANSFORMER;
    } else {
        return;
    }
    Map<String, Object> combinedMap = new LinkedHashMap<String, Object>();
    combinedMap.putAll(rb.mergedTopGroups);
    combinedMap.putAll(rb.mergedQueryCommandResults);
    endResultTransformer.transform(combinedMap, rb, solrDocumentSource);
}

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From source file:org.apache.solr.handler.component.QueryComponent.java

License:Apache License

@SuppressWarnings("unchecked")
private void groupedFinishStage(final ResponseBuilder rb) {
    // To have same response as non-distributed request.
    GroupingSpecification groupSpec = rb.getGroupingSpec();
    if (rb.mergedTopGroups.isEmpty()) {
        for (String field : groupSpec.getFields()) {
            rb.mergedTopGroups.put(field, new TopGroups(null, null, 0, 0, new GroupDocs[] {}, Float.NaN));
        }//from   www .ja  va 2  s. c  o  m
        rb.resultIds = new HashMap<Object, ShardDoc>();
    }

    EndResultTransformer.SolrDocumentSource solrDocumentSource = new EndResultTransformer.SolrDocumentSource() {

        @Override
        public SolrDocument retrieve(ScoreDoc doc) {
            ShardDoc solrDoc = (ShardDoc) doc;
            return rb.retrievedDocuments.get(solrDoc.id);
        }

    };
    EndResultTransformer endResultTransformer;
    if (groupSpec.isMain()) {
        endResultTransformer = MAIN_END_RESULT_TRANSFORMER;
    } else if (Grouping.Format.grouped == groupSpec.getResponseFormat()) {
        endResultTransformer = new GroupedEndResultTransformer(rb.req.getSearcher());
    } else if (Grouping.Format.simple == groupSpec.getResponseFormat() && !groupSpec.isMain()) {
        endResultTransformer = SIMPLE_END_RESULT_TRANSFORMER;
    } else {
        return;
    }
    Map<String, Object> combinedMap = new LinkedHashMap<String, Object>();
    combinedMap.putAll(rb.mergedTopGroups);
    combinedMap.putAll(rb.mergedQueryCommandResults);
    endResultTransformer.transform(combinedMap, rb, solrDocumentSource);
}

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From source file:org.apache.solr.search.grouping.distributed.command.GroupConverter.java

License:Apache License

static TopGroups<BytesRef> fromMutable(SchemaField field, TopGroups<MutableValue> values) {
    if (values == null) {
        return null;
    }/*from w  w w.  ja  v a 2 s  .  c o m*/

    FieldType fieldType = field.getType();

    @SuppressWarnings("unchecked")
    GroupDocs<BytesRef> groupDocs[] = new GroupDocs[values.groups.length];

    for (int i = 0; i < values.groups.length; i++) {
        GroupDocs<MutableValue> original = values.groups[i];
        final BytesRef groupValue;
        if (original.groupValue.exists) {
            BytesRefBuilder binary = new BytesRefBuilder();
            fieldType.readableToIndexed(original.groupValue.toString(), binary);
            groupValue = binary.get();
        } else {
            groupValue = null;
        }
        groupDocs[i] = new GroupDocs<BytesRef>(original.score, original.maxScore, original.totalHits,
                original.scoreDocs, groupValue, original.groupSortValues);
    }

    return new TopGroups<BytesRef>(values.groupSort, values.withinGroupSort, values.totalHitCount,
            values.totalGroupedHitCount, groupDocs, values.maxScore);
}

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From source file:org.apache.solr.search.grouping.distributed.command.TopGroupsFieldCommand.java

License:Apache License

@Override
@SuppressWarnings("unchecked")
public TopGroups<BytesRef> result() {
    if (firstPhaseGroups.isEmpty()) {
        return new TopGroups<BytesRef>(groupSort.getSort(), sortWithinGroup.getSort(), 0, 0, new GroupDocs[0],
                Float.NaN);//from   w  w w  .ja va 2  s. com
    }

    return secondPassCollector.getTopGroups(0);
}

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From source file:org.apache.solr.search.grouping.distributed.shardresultserializer.TopGroupsResultTransformer.java

License:Apache License

/**
 * {@inheritDoc}// w w w . ja  v  a  2s  . c  o m
 */
@Override
public Map<String, ?> transformToNative(NamedList<NamedList> shardResponse, Sort groupSort,
        Sort sortWithinGroup, String shard) {
    Map<String, Object> result = new HashMap<String, Object>();

    for (Map.Entry<String, NamedList> entry : shardResponse) {
        String key = entry.getKey();
        NamedList commandResult = entry.getValue();
        Integer totalGroupedHitCount = (Integer) commandResult.get("totalGroupedHitCount");
        Integer totalHits = (Integer) commandResult.get("totalHits");
        if (totalHits != null) {
            Integer matches = (Integer) commandResult.get("matches");
            Float maxScore = (Float) commandResult.get("maxScore");
            if (maxScore == null) {
                maxScore = Float.NaN;
            }

            @SuppressWarnings("unchecked")
            List<NamedList<Object>> documents = (List<NamedList<Object>>) commandResult.get("documents");
            ScoreDoc[] scoreDocs = new ScoreDoc[documents.size()];
            int j = 0;
            for (NamedList<Object> document : documents) {
                Object docId = document.get("id");
                Object uniqueId = null;
                if (docId != null)
                    uniqueId = docId.toString();
                else
                    log.warn("doc {} has null 'id'", document);
                Float score = (Float) document.get("score");
                if (score == null) {
                    score = Float.NaN;
                }
                Object[] sortValues = null;
                Object sortValuesVal = document.get("sortValues");
                if (sortValuesVal != null) {
                    sortValues = ((List) sortValuesVal).toArray();
                } else {
                    log.warn("doc {} has null 'sortValues'", document);
                }
                scoreDocs[j++] = new ShardDoc(score, sortValues, uniqueId, shard);
            }
            result.put(key, new QueryCommandResult(new TopDocs(totalHits, scoreDocs, maxScore), matches));
            continue;
        }

        Integer totalHitCount = (Integer) commandResult.get("totalHitCount");

        List<GroupDocs<BytesRef>> groupDocs = new ArrayList<GroupDocs<BytesRef>>();
        for (int i = 2; i < commandResult.size(); i++) {
            String groupValue = commandResult.getName(i);
            @SuppressWarnings("unchecked")
            NamedList<Object> groupResult = (NamedList<Object>) commandResult.getVal(i);
            Integer totalGroupHits = (Integer) groupResult.get("totalHits");
            Float maxScore = (Float) groupResult.get("maxScore");
            if (maxScore == null) {
                maxScore = Float.NaN;
            }

            @SuppressWarnings("unchecked")
            List<NamedList<Object>> documents = (List<NamedList<Object>>) groupResult.get("documents");
            ScoreDoc[] scoreDocs = new ScoreDoc[documents.size()];
            int j = 0;
            for (NamedList<Object> document : documents) {
                Object uniqueId = document.get("id").toString();
                Float score = (Float) document.get("score");
                if (score == null) {
                    score = Float.NaN;
                }
                Object[] sortValues = ((List) document.get("sortValues")).toArray();
                scoreDocs[j++] = new ShardDoc(score, sortValues, uniqueId, shard);
            }

            BytesRef groupValueRef = groupValue != null ? new BytesRef(groupValue) : null;
            groupDocs.add(new GroupDocs<BytesRef>(Float.NaN, maxScore, totalGroupHits, scoreDocs, groupValueRef,
                    null));
        }

        @SuppressWarnings("unchecked")
        GroupDocs<BytesRef>[] groupDocsArr = groupDocs.toArray(new GroupDocs[groupDocs.size()]);
        TopGroups<BytesRef> topGroups = new TopGroups<BytesRef>(groupSort.getSort(), sortWithinGroup.getSort(),
                totalHitCount, totalGroupedHitCount, groupDocsArr, Float.NaN);

        result.put(key, topGroups);
    }

    return result;
}

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