Java Code Examples for org.elasticsearch.search.internal.SearchContext

@Override
public void execute(SearchContext searchContext) throws QueryPhaseExecutionException {
    // Pre-process aggregations as late as possible. In the case of a DFS_Q_T_F
    // request, preProcess is called on the DFS phase phase, this is why we pre-process them
    // here to make sure it happens during the QUERY phase
    aggregationPhase.preProcess(searchContext);

    boolean rescore = execute(searchContext, searchContext.searcher());

    if (rescore) { // only if we do a regular search
        rescorePhase.execute(searchContext);
    }
    suggestPhase.execute(searchContext);
    aggregationPhase.execute(searchContext);

    if (searchContext.getProfilers() != null) {
        List<ProfileShardResult> shardResults = Profiler.buildShardResults(searchContext.getProfilers().getProfilers());
        searchContext.queryResult().profileResults(shardResults);
    }
}
 

public InnerHitsSubSearchContext parse(QueryParseContext parserContext) throws IOException, QueryParsingException {
    String fieldName = null;
    XContentParser.Token token;
    String innerHitName = null;
    SubSearchContext subSearchContext = new SubSearchContext(SearchContext.current());
    try {
        XContentParser parser = parserContext.parser();
        while ((token = parser.nextToken()) != XContentParser.Token.END_OBJECT) {
            if (token == XContentParser.Token.FIELD_NAME) {
                fieldName = parser.currentName();
            } else if (token.isValue()) {
                if ("name".equals(fieldName)) {
                    innerHitName = parser.textOrNull();
                } else {
                    parseCommonInnerHitOptions(parser, token, fieldName, subSearchContext, sortParseElement, sourceParseElement, highlighterParseElement, scriptFieldsParseElement, fieldDataFieldsParseElement);
                }
            } else {
                parseCommonInnerHitOptions(parser, token, fieldName, subSearchContext, sortParseElement, sourceParseElement, highlighterParseElement, scriptFieldsParseElement, fieldDataFieldsParseElement);
            }
        }
    } catch (Exception e) {
        throw new QueryParsingException(parserContext, "Failed to parse [_inner_hits]", e);
    }
    return new InnerHitsSubSearchContext(innerHitName, subSearchContext);
}
 

@Override
public AggregatorFactory parse(String aggregationName, XContentParser parser, SearchContext context) throws IOException {
    String path = null;

    XContentParser.Token token;
    String currentFieldName = null;
    while ((token = parser.nextToken()) != XContentParser.Token.END_OBJECT) {
        if (token == XContentParser.Token.FIELD_NAME) {
            currentFieldName = parser.currentName();
        } else if (token == XContentParser.Token.VALUE_STRING) {
            if ("path".equals(currentFieldName)) {
                path = parser.text();
            } else {
                throw new SearchParseException(context, "Unknown key for a " + token + " in [" + aggregationName + "]: ["
                        + currentFieldName + "].", parser.getTokenLocation());
            }
        } else {
            throw new SearchParseException(context, "Unexpected token " + token + " in [" + aggregationName + "].",
                    parser.getTokenLocation());
        }
    }

    return new ReverseNestedAggregator.Factory(aggregationName, path);
}
 

public DateHierarchyAggregator(
        String name,
        AggregatorFactories factories,
        SearchContext context,
        ValuesSource.Numeric valuesSource,
        BucketOrder order,
        long minDocCount,
        BucketCountThresholds bucketCountThresholds,
        List<DateHierarchyAggregationBuilder.RoundingInfo> roundingsInfo,
        Aggregator parent,
        List<PipelineAggregator> pipelineAggregators,
        Map<String, Object> metaData
) throws IOException {
    super(name, factories, context, parent, pipelineAggregators, metaData);
    this.valuesSource = valuesSource;
    this.roundingsInfo = roundingsInfo;
    this.minDocCount = minDocCount;
    bucketOrds =  new BytesRefHash(1, context.bigArrays());
    this.order = InternalOrder.validate(order, this);
    this.bucketCountThresholds = bucketCountThresholds;
}
 

@Override
public void hitExecute(SearchContext context, HitContext hitContext) {
    for (FieldDataFieldsContext.FieldDataField field : context.getFetchSubPhaseContext(CONTEXT_FACTORY).fields()) {
        if (hitContext.hit().fieldsOrNull() == null) {
            hitContext.hit().fields(new HashMap<String, SearchHitField>(2));
        }
        SearchHitField hitField = hitContext.hit().fields().get(field.name());
        if (hitField == null) {
            hitField = new InternalSearchHitField(field.name(), new ArrayList<>(2));
            hitContext.hit().fields().put(field.name(), hitField);
        }
        MappedFieldType fieldType = context.mapperService().smartNameFieldType(field.name());
        if (fieldType != null) {
            AtomicFieldData data = context.fieldData().getForField(fieldType).load(hitContext.readerContext());
            ScriptDocValues values = data.getScriptValues();
            values.setNextDocId(hitContext.docId());
            hitField.values().addAll(values.getValues());
        }
    }
}
 

@Override
public void hitExecute(SearchContext context, HitContext hitContext) {
    // it might make sense to cache the TermDocs on a shared fetch context and just skip here)
    // it is going to mean we work on the high level multi reader and not the lower level reader as is
    // the case below...
    long version;
    try {
        BytesRef uid = Uid.createUidAsBytes(hitContext.hit().type(), hitContext.hit().id());
        version = Versions.loadVersion(
                hitContext.readerContext().reader(),
                new Term(UidFieldMapper.NAME, uid)
        );
    } catch (IOException e) {
        throw new ElasticsearchException("Could not query index for _version", e);
    }

    if (version < 0) {
        version = -1;
    }
    hitContext.hit().version(version);
}
 

@Override
public void hitExecute(SearchContext context, HitContext hitContext) {
    try {
        final int topLevelDocId = hitContext.hit().docId();
        Explanation explanation = context.searcher().explain(context.query(), topLevelDocId);
        
        for (RescoreSearchContext rescore : context.rescore()) {
            explanation = rescore.rescorer().explain(topLevelDocId, context, rescore, explanation);
        }
        // we use the top level doc id, since we work with the top level searcher
        hitContext.hit().explanation(explanation);
    } catch (IOException e) {
        throw new FetchPhaseExecutionException(context, "Failed to explain doc [" + hitContext.hit().type() + "#" + hitContext.hit().id() + "]", e);
    } finally {
        context.clearReleasables(SearchContext.Lifetime.COLLECTION);
    }
}
 

@Override
public void hitExecute(SearchContext context, HitContext hitContext) {
    FetchSourceContext fetchSourceContext = context.fetchSourceContext();
    assert fetchSourceContext.fetchSource();
    if (fetchSourceContext.includes().length == 0 && fetchSourceContext.excludes().length == 0) {
        hitContext.hit().sourceRef(context.lookup().source().internalSourceRef());
        return;
    }

    SourceLookup source = context.lookup().source();
    Object value = source.filter(fetchSourceContext.includes(), fetchSourceContext.excludes());
    try {
        final int initialCapacity = Math.min(1024, source.internalSourceRef().length());
        BytesStreamOutput streamOutput = new BytesStreamOutput(initialCapacity);
        XContentBuilder builder = new XContentBuilder(context.lookup().source().sourceContentType().xContent(), streamOutput);
        builder.value(value);
        hitContext.hit().sourceRef(builder.bytes());
    } catch (IOException e) {
        throw new ElasticsearchException("Error filtering source", e);
    }

}
 

static List<Object> loadFieldValues(SearchContextHighlight.Field field, FieldMapper mapper, SearchContext searchContext, FetchSubPhase.HitContext hitContext) throws IOException {
    //percolator needs to always load from source, thus it sets the global force source to true
    boolean forceSource = searchContext.highlight().forceSource(field);
    List<Object> textsToHighlight;
    if (!forceSource && mapper.fieldType().stored()) {
        CustomFieldsVisitor fieldVisitor = new CustomFieldsVisitor(ImmutableSet.of(mapper.fieldType().names().indexName()), false);
        hitContext.reader().document(hitContext.docId(), fieldVisitor);
        textsToHighlight = fieldVisitor.fields().get(mapper.fieldType().names().indexName());
        if (textsToHighlight == null) {
            // Can happen if the document doesn't have the field to highlight
            textsToHighlight = Collections.emptyList();
        }
    } else {
        SourceLookup sourceLookup = searchContext.lookup().source();
        sourceLookup.setSegmentAndDocument(hitContext.readerContext(), hitContext.docId());
        textsToHighlight = sourceLookup.extractRawValues(hitContext.getSourcePath(mapper.fieldType().names().fullName()));
    }
    assert textsToHighlight != null;
    return textsToHighlight;
}
 

@Override
public Explanation explain(int topLevelDocId, SearchContext context, RescoreSearchContext rescoreContext,
                           Explanation sourceExplanation) throws IOException {
    QueryRescoreContext rescore = (QueryRescoreContext) rescoreContext;
    ContextIndexSearcher searcher = context.searcher();
    if (sourceExplanation == null) {
        // this should not happen but just in case
        return Explanation.noMatch("nothing matched");
    }
    // TODO: this isn't right?  I.e., we are incorrectly pretending all first pass hits were rescored?  If the requested docID was
    // beyond the top rescoreContext.window() in the first pass hits, we don't rescore it now?
    Explanation rescoreExplain = searcher.explain(rescore.query(), topLevelDocId);
    float primaryWeight = rescore.queryWeight();

    Explanation prim;
    if (sourceExplanation.isMatch()) {
        prim = Explanation.match(
                sourceExplanation.getValue() * primaryWeight,
                "product of:", sourceExplanation, Explanation.match(primaryWeight, "primaryWeight"));
    } else {
        prim = Explanation.noMatch("First pass did not match", sourceExplanation);
    }

    // NOTE: we don't use Lucene's Rescorer.explain because we want to insert our own description with which ScoreMode was used.  Maybe
    // we should add QueryRescorer.explainCombine to Lucene?
    if (rescoreExplain != null && rescoreExplain.isMatch()) {
        float secondaryWeight = rescore.rescoreQueryWeight();
        Explanation sec = Explanation.match(
                rescoreExplain.getValue() * secondaryWeight,
                "product of:",
                rescoreExplain, Explanation.match(secondaryWeight, "secondaryWeight"));
        ScoreMode scoreMode = rescore.scoreMode();
        return Explanation.match(
                scoreMode.combine(prim.getValue(), sec.getValue()),
                scoreMode + " of:",
                prim, sec);
    } else {
        return prim;
    }
}
 

public void onPreQueryPhase(SearchContext searchContext) {
    totalStats.queryCurrent.inc();
    if (searchContext.groupStats() != null) {
        for (int i = 0; i < searchContext.groupStats().size(); i++) {
            groupStats(searchContext.groupStats().get(i)).queryCurrent.inc();
        }
    }
}
 

@Override
public AggregatorFactory parse(String aggregationName, XContentParser parser, SearchContext context) throws IOException {
    ValuesSourceParser<GeoPoint> vsParser = ValuesSourceParser.geoPoint(aggregationName, InternalGeoBounds.TYPE, context)
            .targetValueType(ValueType.GEOPOINT)
            .formattable(true)
            .build();
    boolean wrapLongitude = true;
    XContentParser.Token token;
    String currentFieldName = null;
    while ((token = parser.nextToken()) != XContentParser.Token.END_OBJECT) {
        if (token == XContentParser.Token.FIELD_NAME) {
            currentFieldName = parser.currentName();
        } else if (vsParser.token(currentFieldName, token, parser)) {
            continue;
            
        } else if (token == XContentParser.Token.VALUE_BOOLEAN) {
            if ("wrap_longitude".equals(currentFieldName) || "wrapLongitude".equals(currentFieldName)) {
                wrapLongitude = parser.booleanValue();
            } else {
                throw new SearchParseException(context, "Unknown key for a " + token + " in aggregation [" + aggregationName + "]: ["
                        + currentFieldName + "].", parser.getTokenLocation());
            }
        } else {
            throw new SearchParseException(context, "Unknown key for a " + token + " in aggregation [" + aggregationName + "]: ["
                    + currentFieldName + "].", parser.getTokenLocation());
        }
    }
    return new GeoBoundsAggregator.Factory(aggregationName, vsParser.config(), wrapLongitude);
}
 

public HighlighterContext(String fieldName, SearchContextHighlight.Field field, FieldMapper mapper, SearchContext context,
        FetchSubPhase.HitContext hitContext, Query query) {
    this.fieldName = fieldName;
    this.field = field;
    this.mapper = mapper;
    this.context = context;
    this.hitContext = hitContext;
    this.query = query;
}
 

@Override
protected AggregatorFactory buildFactory(SearchContext context, String aggregationName, ValuesSourceConfig<Numeric> valuesSourceConfig,
        double[] keys, PercentilesMethod method, Double compression, Integer numberOfSignificantValueDigits, boolean keyed) {
    if (keys == null) {
        keys = DEFAULT_PERCENTS;
    }
    if (method == PercentilesMethod.TDIGEST) {
        return new TDigestPercentilesAggregator.Factory(aggregationName, valuesSourceConfig, keys, compression, keyed);
    } else if (method == PercentilesMethod.HDR) {
        return new HDRPercentilesAggregator.Factory(aggregationName, valuesSourceConfig, keys, numberOfSignificantValueDigits, keyed);
    } else {
        throw new AssertionError();
    }
}
 

@Override
protected final MultiValuesSourceAggregatorFactory<ValuesSource.Numeric, ?> innerBuild(
    final SearchContext context,
    final List<NamedValuesSourceConfigSpec<Numeric>> configs,
    final AggregatorFactory<?> parent, final AggregatorFactories.Builder subFactoriesBuilder)
    throws IOException {
  return innerInnerBuild(context, configs, this.multiValueMode, parent, subFactoriesBuilder);
}
 

@Override
public void parse(XContentParser parser, SearchContext context) throws Exception {
    XContentParser.Token token = parser.currentToken();
    List<SortField> sortFields = new ArrayList<>(2);
    if (token == XContentParser.Token.START_ARRAY) {
        while ((token = parser.nextToken()) != XContentParser.Token.END_ARRAY) {
            if (token == XContentParser.Token.START_OBJECT) {
                addCompoundSortField(parser, context, sortFields);
            } else if (token == XContentParser.Token.VALUE_STRING) {
                addSortField(context, sortFields, parser.text(), false, null, null, null, null);
            } else {
                throw new IllegalArgumentException("malformed sort format, within the sort array, an object, or an actual string are allowed");
            }
        }
    } else if (token == XContentParser.Token.VALUE_STRING) {
        addSortField(context, sortFields, parser.text(), false, null, null, null, null);
    } else if (token == XContentParser.Token.START_OBJECT) {
        addCompoundSortField(parser, context, sortFields);
    } else {
        throw new IllegalArgumentException("malformed sort format, either start with array, object, or an actual string");
    }
    if (!sortFields.isEmpty()) {
        // optimize if we just sort on score non reversed, we don't really need sorting
        boolean sort;
        if (sortFields.size() > 1) {
            sort = true;
        } else {
            SortField sortField = sortFields.get(0);
            if (sortField.getType() == SortField.Type.SCORE && !sortField.getReverse()) {
                sort = false;
            } else {
                sort = true;
            }
        }
        if (sort) {
            context.sort(new Sort(sortFields.toArray(new SortField[sortFields.size()])));
        }
    }
}
 

@Override
public Weight doCreateWeight(IndexSearcher searcher, boolean needsScores) throws IOException {
    SearchContext sc = SearchContext.current();
    ChildWeight childWeight;
    boolean releaseCollectorResource = true;
    ParentOrdAndScoreCollector collector = null;
    IndexParentChildFieldData globalIfd = parentChildIndexFieldData.loadGlobal((DirectoryReader)searcher.getIndexReader());
    if (globalIfd == null) {
        // No docs of the specified type don't exist on this shard
        return new BooleanQuery.Builder().build().createWeight(searcher, needsScores);
    }

    try {
        collector = new ParentOrdAndScoreCollector(sc, globalIfd, parentType);
        searcher.search(parentQuery, collector);
        if (collector.parentCount() == 0) {
            return new BooleanQuery.Builder().build().createWeight(searcher, needsScores);
        }
        childWeight = new ChildWeight(this, parentQuery.createWeight(searcher, needsScores), childrenFilter, collector, globalIfd);
        releaseCollectorResource = false;
    } finally {
        if (releaseCollectorResource) {
            // either if we run into an exception or if we return early
            Releasables.close(collector);
        }
    }
    sc.addReleasable(collector, Lifetime.COLLECTION);
    return childWeight;
}
 

private AbstractDistanceScoreFunction parseDateVariable(String fieldName, XContentParser parser, QueryParseContext parseContext,
        DateFieldMapper.DateFieldType dateFieldType, MultiValueMode mode) throws IOException {
    XContentParser.Token token;
    String parameterName = null;
    String scaleString = null;
    String originString = null;
    String offsetString = "0d";
    double decay = 0.5;
    while ((token = parser.nextToken()) != XContentParser.Token.END_OBJECT) {
        if (token == XContentParser.Token.FIELD_NAME) {
            parameterName = parser.currentName();
        } else if (parameterName.equals(DecayFunctionBuilder.SCALE)) {
            scaleString = parser.text();
        } else if (parameterName.equals(DecayFunctionBuilder.ORIGIN)) {
            originString = parser.text();
        } else if (parameterName.equals(DecayFunctionBuilder.DECAY)) {
            decay = parser.doubleValue();
        } else if (parameterName.equals(DecayFunctionBuilder.OFFSET)) {
            offsetString = parser.text();
        } else {
            throw new ElasticsearchParseException("parameter [{}] not supported!", parameterName);
        }
    }
    long origin = SearchContext.current().nowInMillis();
    if (originString != null) {
        origin = dateFieldType.parseToMilliseconds(originString, false, null, null);
    }

    if (scaleString == null) {
        throw new ElasticsearchParseException("[{}] must be set for date fields.", DecayFunctionBuilder.SCALE);
    }
    TimeValue val = TimeValue.parseTimeValue(scaleString, TimeValue.timeValueHours(24), getClass().getSimpleName() + ".scale");
    double scale = val.getMillis();
    val = TimeValue.parseTimeValue(offsetString, TimeValue.timeValueHours(24), getClass().getSimpleName() + ".offset");
    double offset = val.getMillis();
    IndexNumericFieldData numericFieldData = parseContext.getForField(dateFieldType);
    return new NumericFieldDataScoreFunction(origin, scale, decay, offset, getDecayFunction(), numericFieldData, mode);
}
 

@Override
public void execute(SearchContext context) {
    final ObjectHashSet<Term> termsSet = new ObjectHashSet<>();
    try {
        context.searcher().createNormalizedWeight(context.query(), true).extractTerms(new DelegateSet(termsSet));
        for (RescoreSearchContext rescoreContext : context.rescore()) {
            rescoreContext.rescorer().extractTerms(context, rescoreContext, new DelegateSet(termsSet));
        }

        Term[] terms = termsSet.toArray(Term.class);
        TermStatistics[] termStatistics = new TermStatistics[terms.length];
        IndexReaderContext indexReaderContext = context.searcher().getTopReaderContext();
        for (int i = 0; i < terms.length; i++) {
            // LUCENE 4 UPGRADE: cache TermContext?
            TermContext termContext = TermContext.build(indexReaderContext, terms[i]);
            termStatistics[i] = context.searcher().termStatistics(terms[i], termContext);
        }

        ObjectObjectHashMap<String, CollectionStatistics> fieldStatistics = HppcMaps.newNoNullKeysMap();
        for (Term term : terms) {
            assert term.field() != null : "field is null";
            if (!fieldStatistics.containsKey(term.field())) {
                final CollectionStatistics collectionStatistics = context.searcher().collectionStatistics(term.field());
                fieldStatistics.put(term.field(), collectionStatistics);
            }
        }

        context.dfsResult().termsStatistics(terms, termStatistics)
                .fieldStatistics(fieldStatistics)
                .maxDoc(context.searcher().getIndexReader().maxDoc());
    } catch (Exception e) {
        throw new DfsPhaseExecutionException(context, "Exception during dfs phase", e);
    } finally {
        termsSet.clear(); // don't hold on to terms
    }
}
 

@Override
public void parse(XContentParser parser, SearchContext context) throws Exception {
    XContentParser.Token token = parser.currentToken();
    if (token == XContentParser.Token.VALUE_NUMBER) {
        int terminateAfterCount = parser.intValue();
        if (terminateAfterCount <= 0) {
            throw new IllegalArgumentException("terminateAfter must be > 0");
        }
        context.terminateAfter(parser.intValue());
    }
}
 

private InnerHitsContext.NestedInnerHits parseNested(XContentParser parser, QueryParseContext parseContext, SearchContext searchContext, String nestedPath) throws Exception {
    ObjectMapper objectMapper = searchContext.getObjectMapper(nestedPath);
    if (objectMapper == null) {
        throw new IllegalArgumentException("path [" + nestedPath +"] doesn't exist");
    }
    if (objectMapper.nested().isNested() == false) {
        throw new IllegalArgumentException("path [" + nestedPath +"] isn't nested");
    }
    ObjectMapper parentObjectMapper = parseContext.nestedScope().nextLevel(objectMapper);
    ParseResult parseResult = parseSubSearchContext(searchContext, parseContext, parser);
    parseContext.nestedScope().previousLevel();

    return new InnerHitsContext.NestedInnerHits(parseResult.context(), parseResult.query(), parseResult.childInnerHits(), parentObjectMapper, objectMapper);
}
 

@Override
public TopDocs rescore(TopDocs topDocs, SearchContext context, RescoreSearchContext rescoreContext) throws IOException {

    assert rescoreContext != null;
    if (topDocs == null || topDocs.totalHits == 0 || topDocs.scoreDocs.length == 0) {
        return topDocs;
    }

    final QueryRescoreContext rescore = (QueryRescoreContext) rescoreContext;

    org.apache.lucene.search.Rescorer rescorer = new org.apache.lucene.search.QueryRescorer(rescore.query()) {

        @Override
        protected float combine(float firstPassScore, boolean secondPassMatches, float secondPassScore) {
            if (secondPassMatches) {
                return rescore.scoreMode.combine(firstPassScore * rescore.queryWeight(), secondPassScore * rescore.rescoreQueryWeight());
            }
            // TODO: shouldn't this be up to the ScoreMode?  I.e., we should just invoke ScoreMode.combine, passing 0.0f for the
            // secondary score?
            return firstPassScore * rescore.queryWeight();
        }
    };

    // First take top slice of incoming docs, to be rescored:
    TopDocs topNFirstPass = topN(topDocs, rescoreContext.window());

    // Rescore them:
    TopDocs rescored = rescorer.rescore(context.searcher(), topNFirstPass, rescoreContext.window());

    // Splice back to non-topN hits and resort all of them:
    return combine(topDocs, rescored, (QueryRescoreContext) rescoreContext);
}
 

@Override
public Weight doCreateWeight(IndexSearcher searcher, boolean needsScores) throws IOException {
    SearchContext sc = SearchContext.current();
    IndexParentChildFieldData globalIfd = parentChildIndexFieldData.loadGlobal((DirectoryReader)searcher.getIndexReader());

    final long valueCount;
    List<LeafReaderContext> leaves = searcher.getIndexReader().leaves();
    if (globalIfd == null || leaves.isEmpty()) {
        return new BooleanQuery.Builder().build().createWeight(searcher, needsScores);
    } else {
        AtomicParentChildFieldData afd = globalIfd.load(leaves.get(0));
        SortedDocValues globalValues = afd.getOrdinalsValues(parentType);
        valueCount = globalValues.getValueCount();
    }

    if (valueCount == 0) {
        return new BooleanQuery.Builder().build().createWeight(searcher, needsScores);
    }

    ParentOrdCollector collector = new ParentOrdCollector(globalIfd, valueCount, parentType);
    searcher.search(childQuery, collector);

    final long remaining = collector.foundParents();
    if (remaining == 0) {
        return new BooleanQuery.Builder().build().createWeight(searcher, needsScores);
    }

    Filter shortCircuitFilter = null;
    if (remaining <= shortCircuitParentDocSet) {
        shortCircuitFilter = ParentIdsFilter.createShortCircuitFilter(
                nonNestedDocsFilter, sc, parentType, collector.values, collector.parentOrds, remaining
        );
    }
    return new ParentWeight(this, parentFilter, globalIfd, shortCircuitFilter, collector, remaining);
}
 

protected ParentCollector(IndexParentChildFieldData globalIfd, SearchContext searchContext, String parentType) {
    this.globalIfd = globalIfd;
    this.searchContext = searchContext;
    this.bigArrays = searchContext.bigArrays();
    this.parentIdxs = new LongHash(512, bigArrays);
    this.parentType = parentType;
}
 

private InnerHitsContext.ParentChildInnerHits parseParentChild(XContentParser parser, QueryParseContext parseContext, SearchContext searchContext, String type) throws Exception {
    ParseResult parseResult = parseSubSearchContext(searchContext, parseContext, parser);
    DocumentMapper documentMapper = searchContext.mapperService().documentMapper(type);
    if (documentMapper == null) {
        throw new IllegalArgumentException("type [" + type + "] doesn't exist");
    }
    return new InnerHitsContext.ParentChildInnerHits(parseResult.context(), parseResult.query(), parseResult.childInnerHits(), parseContext.mapperService(), documentMapper);
}
 

@Override
public void parse(XContentParser parser, SearchContext context) throws Exception {
    XContentParser.Token token = parser.currentToken();
    if (token.isValue()) {
        context.trackScores(parser.booleanValue());
    }
}
 

@Override
public void extractTerms(SearchContext context, RescoreSearchContext rescoreContext, Set<Term> termsSet) {
    try {
        context.searcher().createNormalizedWeight(((QueryRescoreContext) rescoreContext).query(), false).extractTerms(termsSet);
    } catch (IOException e) {
        throw new IllegalStateException("Failed to extract terms", e);
    }
}
 

public long nowInMillis() {
    SearchContext current = SearchContext.current();
    if (current != null) {
        return current.nowInMillis();
    }
    return System.currentTimeMillis();
}
 

@Override
public SignificanceHeuristic parse(XContentParser parser, ParseFieldMatcher parseFieldMatcher, SearchContext context)
        throws IOException, QueryParsingException {
    // move to the closing bracket
    if (!parser.nextToken().equals(XContentParser.Token.END_OBJECT)) {
        throw new ElasticsearchParseException("failed to parse [percentage] significance heuristic. expected an empty object, but got [{}] instead", parser.currentToken());
    }
    return new PercentageScore();
}
 

public SignificantTermsAggregatorFactory(String name, ValuesSourceConfig valueSourceConfig, TermsAggregator.BucketCountThresholds bucketCountThresholds, IncludeExclude includeExclude,
                                         String executionHint, Query filter, SignificanceHeuristic significanceHeuristic) {

    super(name, SignificantStringTerms.TYPE.name(), valueSourceConfig);
    this.bucketCountThresholds = bucketCountThresholds;
    this.includeExclude = includeExclude;
    this.executionHint = executionHint;
    this.significanceHeuristic = significanceHeuristic;
    if (!valueSourceConfig.unmapped()) {
        this.indexedFieldName = config.fieldContext().field();
        fieldType = SearchContext.current().smartNameFieldType(indexedFieldName);
    }
    this.filter = filter;
}