Examples with FieldNameAnalyzer org.opensearch.index.analysis.FieldNameAnalyzer used on opensource projects

Example 1 with FieldNameAnalyzer

use of org.opensearch.index.analysis.FieldNameAnalyzer in project OpenSearch by opensearch-project.

the class PercolateQueryBuilder method doToQuery.

@Override
protected Query doToQuery(QueryShardContext context) throws IOException {
    if (context.allowExpensiveQueries() == false) {
        throw new OpenSearchException("[percolate] queries cannot be executed when '" + ALLOW_EXPENSIVE_QUERIES.getKey() + "' is set to false.");
    }
    // Call nowInMillis() so that this query becomes un-cacheable since we
    // can't be sure that it doesn't use now or scripts
    context.nowInMillis();
    if (indexedDocumentIndex != null || indexedDocumentId != null || documentSupplier != null) {
        throw new IllegalStateException("query builder must be rewritten first");
    }
    if (documents.isEmpty()) {
        throw new IllegalStateException("no document to percolate");
    }
    MappedFieldType fieldType = context.fieldMapper(field);
    if (fieldType == null) {
        throw new QueryShardException(context, "field [" + field + "] does not exist");
    }
    if (!(fieldType instanceof PercolatorFieldMapper.PercolatorFieldType)) {
        throw new QueryShardException(context, "expected field [" + field + "] to be of type [percolator], but is of type [" + fieldType.typeName() + "]");
    }
    final List<ParsedDocument> docs = new ArrayList<>();
    final DocumentMapper docMapper;
    final MapperService mapperService = context.getMapperService();
    String type = mapperService.documentMapper().type();
    if (documentType != null) {
        deprecationLogger.deprecate("percolate_with_document_type", DOCUMENT_TYPE_DEPRECATION_MESSAGE);
        if (documentType.equals(type) == false) {
            throw new IllegalArgumentException("specified document_type [" + documentType + "] is not equal to the actual type [" + type + "]");
        }
    }
    docMapper = mapperService.documentMapper(type);
    for (BytesReference document : documents) {
        docs.add(docMapper.parse(new SourceToParse(context.index().getName(), type, "_temp_id", document, documentXContentType)));
    }
    FieldNameAnalyzer fieldNameAnalyzer = (FieldNameAnalyzer) docMapper.mappers().indexAnalyzer();
    // Need to this custom impl because FieldNameAnalyzer is strict and the percolator sometimes isn't when
    // 'index.percolator.map_unmapped_fields_as_string' is enabled:
    Analyzer analyzer = new DelegatingAnalyzerWrapper(Analyzer.PER_FIELD_REUSE_STRATEGY) {

        @Override
        protected Analyzer getWrappedAnalyzer(String fieldName) {
            Analyzer analyzer = fieldNameAnalyzer.analyzers().get(fieldName);
            if (analyzer != null) {
                return analyzer;
            } else {
                return context.getIndexAnalyzers().getDefaultIndexAnalyzer();
            }
        }
    };
    final IndexSearcher docSearcher;
    final boolean excludeNestedDocuments;
    if (docs.size() > 1 || docs.get(0).docs().size() > 1) {
        assert docs.size() != 1 || docMapper.hasNestedObjects();
        docSearcher = createMultiDocumentSearcher(analyzer, docs);
        excludeNestedDocuments = docMapper.hasNestedObjects() && docs.stream().map(ParsedDocument::docs).mapToInt(List::size).anyMatch(size -> size > 1);
    } else {
        MemoryIndex memoryIndex = MemoryIndex.fromDocument(docs.get(0).rootDoc(), analyzer, true, false);
        docSearcher = memoryIndex.createSearcher();
        docSearcher.setQueryCache(null);
        excludeNestedDocuments = false;
    }
    PercolatorFieldMapper.PercolatorFieldType pft = (PercolatorFieldMapper.PercolatorFieldType) fieldType;
    String name = this.name != null ? this.name : pft.name();
    QueryShardContext percolateShardContext = wrap(context);
    PercolatorFieldMapper.configureContext(percolateShardContext, pft.mapUnmappedFieldsAsText);
    ;
    PercolateQuery.QueryStore queryStore = createStore(pft.queryBuilderField, percolateShardContext);
    return pft.percolateQuery(name, queryStore, documents, docSearcher, excludeNestedDocuments, context.indexVersionCreated());
}