Examples with MatchNoDocsQuery org.apache.lucene.search.MatchNoDocsQuery used on opensource projects

Example 1 with MatchNoDocsQuery

use of org.apache.lucene.search.MatchNoDocsQuery in project elasticsearch by elastic.

the class SliceBuilder method toFilter.

public Query toFilter(QueryShardContext context, int shardId, int numShards) {
    final MappedFieldType type = context.fieldMapper(field);
    if (type == null) {
        throw new IllegalArgumentException("field " + field + " not found");
    }
    boolean useTermQuery = false;
    if (UidFieldMapper.NAME.equals(field)) {
        useTermQuery = true;
    } else if (type.hasDocValues() == false) {
        throw new IllegalArgumentException("cannot load numeric doc values on " + field);
    } else {
        IndexFieldData ifm = context.getForField(type);
        if (ifm instanceof IndexNumericFieldData == false) {
            throw new IllegalArgumentException("cannot load numeric doc values on " + field);
        }
    }
    if (numShards == 1) {
        return useTermQuery ? new TermsSliceQuery(field, id, max) : new DocValuesSliceQuery(field, id, max);
    }
    if (max >= numShards) {
        // the number of slices is greater than the number of shards
        // in such case we can reduce the number of requested shards by slice
        // first we check if the slice is responsible of this shard
        int targetShard = id % numShards;
        if (targetShard != shardId) {
            // the shard is not part of this slice, we can skip it.
            return new MatchNoDocsQuery("this shard is not part of the slice");
        }
        // compute the number of slices where this shard appears
        int numSlicesInShard = max / numShards;
        int rest = max % numShards;
        if (rest > targetShard) {
            numSlicesInShard++;
        }
        if (numSlicesInShard == 1) {
            // this shard has only one slice so we must check all the documents
            return new MatchAllDocsQuery();
        }
        // get the new slice id for this shard
        int shardSlice = id / numShards;
        return useTermQuery ? new TermsSliceQuery(field, shardSlice, numSlicesInShard) : new DocValuesSliceQuery(field, shardSlice, numSlicesInShard);
    }
    // the number of shards is greater than the number of slices
    // check if the shard is assigned to the slice
    int targetSlice = shardId % max;
    if (id != targetSlice) {
        // the shard is not part of this slice, we can skip it.
        return new MatchNoDocsQuery("this shard is not part of the slice");
    }
    return new MatchAllDocsQuery();
}

Example 2 with MatchNoDocsQuery

use of org.apache.lucene.search.MatchNoDocsQuery in project elasticsearch by elastic.

the class NestedQueryBuilder method doToQuery.

@Override
protected Query doToQuery(QueryShardContext context) throws IOException {
    ObjectMapper nestedObjectMapper = context.getObjectMapper(path);
    if (nestedObjectMapper == null) {
        if (ignoreUnmapped) {
            return new MatchNoDocsQuery();
        } else {
            throw new IllegalStateException("[" + NAME + "] failed to find nested object under path [" + path + "]");
        }
    }
    if (!nestedObjectMapper.nested().isNested()) {
        throw new IllegalStateException("[" + NAME + "] nested object under path [" + path + "] is not of nested type");
    }
    final BitSetProducer parentFilter;
    Query innerQuery;
    ObjectMapper objectMapper = context.nestedScope().getObjectMapper();
    if (objectMapper == null) {
        parentFilter = context.bitsetFilter(Queries.newNonNestedFilter());
    } else {
        parentFilter = context.bitsetFilter(objectMapper.nestedTypeFilter());
    }
    try {
        context.nestedScope().nextLevel(nestedObjectMapper);
        innerQuery = this.query.toQuery(context);
    } finally {
        context.nestedScope().previousLevel();
    }
    // in its child space
    if (new NestedHelper(context.getMapperService()).mightMatchNonNestedDocs(innerQuery, path)) {
        innerQuery = Queries.filtered(innerQuery, nestedObjectMapper.nestedTypeFilter());
    }
    return new ESToParentBlockJoinQuery(innerQuery, parentFilter, scoreMode, objectMapper == null ? null : objectMapper.fullPath());
}

Example 3 with MatchNoDocsQuery

use of org.apache.lucene.search.MatchNoDocsQuery in project elasticsearch by elastic.

the class ParentIdQueryBuilder method doToQuery.

@Override
protected Query doToQuery(QueryShardContext context) throws IOException {
    DocumentMapper childDocMapper = context.getMapperService().documentMapper(type);
    if (childDocMapper == null) {
        if (ignoreUnmapped) {
            return new MatchNoDocsQuery();
        } else {
            throw new QueryShardException(context, "[" + NAME + "] no mapping found for type [" + type + "]");
        }
    }
    ParentFieldMapper parentFieldMapper = childDocMapper.parentFieldMapper();
    if (parentFieldMapper.active() == false) {
        throw new QueryShardException(context, "[" + NAME + "] _parent field has no parent type configured");
    }
    String fieldName = ParentFieldMapper.joinField(parentFieldMapper.type());
    BooleanQuery.Builder query = new BooleanQuery.Builder();
    query.add(new DocValuesTermsQuery(fieldName, id), BooleanClause.Occur.MUST);
    // Need to take child type into account, otherwise a child doc of different type with the same id could match
    query.add(new TermQuery(new Term(TypeFieldMapper.NAME, type)), BooleanClause.Occur.FILTER);
    return query.build();
}

Example 4 with MatchNoDocsQuery

use of org.apache.lucene.search.MatchNoDocsQuery in project elasticsearch by elastic.

the class GeoBoundingBoxQueryBuilder method doToQuery.

@Override
public Query doToQuery(QueryShardContext context) {
    MappedFieldType fieldType = context.fieldMapper(fieldName);
    if (fieldType == null) {
        if (ignoreUnmapped) {
            return new MatchNoDocsQuery();
        } else {
            throw new QueryShardException(context, "failed to find geo_point field [" + fieldName + "]");
        }
    }
    if (!(fieldType instanceof GeoPointFieldType)) {
        throw new QueryShardException(context, "field [" + fieldName + "] is not a geo_point field");
    }
    QueryValidationException exception = checkLatLon(context.indexVersionCreated().before(Version.V_2_0_0));
    if (exception != null) {
        throw new QueryShardException(context, "couldn't validate latitude/ longitude values", exception);
    }
    GeoPoint luceneTopLeft = new GeoPoint(topLeft);
    GeoPoint luceneBottomRight = new GeoPoint(bottomRight);
    final Version indexVersionCreated = context.indexVersionCreated();
    if (indexVersionCreated.onOrAfter(Version.V_2_2_0) || GeoValidationMethod.isCoerce(validationMethod)) {
        // Special case: if the difference between the left and right is 360 and the right is greater than the left, we are asking for
        // the complete longitude range so need to set longitude to the complete longitude range
        double right = luceneBottomRight.getLon();
        double left = luceneTopLeft.getLon();
        boolean completeLonRange = ((right - left) % 360 == 0 && right > left);
        GeoUtils.normalizePoint(luceneTopLeft, true, !completeLonRange);
        GeoUtils.normalizePoint(luceneBottomRight, true, !completeLonRange);
        if (completeLonRange) {
            luceneTopLeft.resetLon(-180);
            luceneBottomRight.resetLon(180);
        }
    }
    Query query = LatLonPoint.newBoxQuery(fieldType.name(), luceneBottomRight.getLat(), luceneTopLeft.getLat(), luceneTopLeft.getLon(), luceneBottomRight.getLon());
    if (fieldType.hasDocValues()) {
        Query dvQuery = LatLonDocValuesField.newBoxQuery(fieldType.name(), luceneBottomRight.getLat(), luceneTopLeft.getLat(), luceneTopLeft.getLon(), luceneBottomRight.getLon());
        query = new IndexOrDocValuesQuery(query, dvQuery);
    }
    return query;
}

Example 5 with MatchNoDocsQuery

use of org.apache.lucene.search.MatchNoDocsQuery in project elasticsearch by elastic.

the class GeoDistanceQueryBuilder method doToQuery.

@Override
protected Query doToQuery(QueryShardContext shardContext) throws IOException {
    MappedFieldType fieldType = shardContext.fieldMapper(fieldName);
    if (fieldType == null) {
        if (ignoreUnmapped) {
            return new MatchNoDocsQuery();
        } else {
            throw new QueryShardException(shardContext, "failed to find geo_point field [" + fieldName + "]");
        }
    }
    if (!(fieldType instanceof GeoPointFieldType)) {
        throw new QueryShardException(shardContext, "field [" + fieldName + "] is not a geo_point field");
    }
    final Version indexVersionCreated = shardContext.indexVersionCreated();
    QueryValidationException exception = checkLatLon(shardContext.indexVersionCreated().before(Version.V_2_0_0));
    if (exception != null) {
        throw new QueryShardException(shardContext, "couldn't validate latitude/ longitude values", exception);
    }
    if (indexVersionCreated.onOrAfter(Version.V_2_2_0) || GeoValidationMethod.isCoerce(validationMethod)) {
        GeoUtils.normalizePoint(center, true, true);
    }
    Query query = LatLonPoint.newDistanceQuery(fieldType.name(), center.lat(), center.lon(), this.distance);
    if (fieldType.hasDocValues()) {
        Query dvQuery = LatLonDocValuesField.newDistanceQuery(fieldType.name(), center.lat(), center.lon(), this.distance);
        query = new IndexOrDocValuesQuery(query, dvQuery);
    }
    return query;
}