Examples with Item com.yahoo.prelude.query.Item used on opensource projects

Example 61 with Item

use of com.yahoo.prelude.query.Item in project vespa by vespa-engine.

the class QueryTestCase method testPositiveTerms.

@Test
public void testPositiveTerms() {
    Query q = new Query(httpEncode("/?query=-a \"b c\" d e"));
    Item i = q.getModel().getQueryTree().getRoot();
    List<IndexedItem> l = QueryTree.getPositiveTerms(i);
    assertEquals(3, l.size());
}

Example 62 with Item

use of com.yahoo.prelude.query.Item in project vespa by vespa-engine.

the class YqlParserTestCase method testRegexp.

@Test
public void testRegexp() {
    QueryTree x = parse("select * from sources * where foo matches \"a b\";");
    Item root = x.getRoot();
    assertSame(RegExpItem.class, root.getClass());
    assertEquals("a b", ((RegExpItem) root).stringValue());
}

Example 63 with Item

use of com.yahoo.prelude.query.Item in project vespa by vespa-engine.

the class VespaBackEndSearcher method search.

public Result search(Query query, Execution execution) {
    // query root should not be null here
    Item root = query.getModel().getQueryTree().getRoot();
    if (root == null || root instanceof NullItem) {
        return new Result(query, ErrorMessage.createNullQuery(query.getHttpRequest().getUri().toString()));
    }
    if (wantsRPCSummaryFill(query) && summaryNeedsQuery(query)) {
        return new Result(query, ErrorMessage.createInvalidQueryParameter("When using dispatch.summaries and your summary/rankprofile require the query, " + " you need to enable ranking.queryCache."));
    }
    QueryRewrite.optimizeByRestrict(query);
    QueryRewrite.optimizeAndNot(query);
    QueryRewrite.collapseSingleComposites(query);
    root = query.getModel().getQueryTree().getRoot();
    if (// root can become null after optimization
    root == null || root instanceof NullItem)
        return new Result(query);
    resolveDocumentDatabase(query);
    transformQuery(query);
    traceQuery(name, "search", query, query.getOffset(), query.getHits(), 1, Optional.empty());
    root = query.getModel().getQueryTree().getRoot();
    if (// root can become null after resolving and transformation?
    root == null || root instanceof NullItem)
        return new Result(query);
    QueryPacket queryPacket = QueryPacket.create(query);
    int compressionLimit = query.properties().getInteger(PACKET_COMPRESSION_LIMIT, 0);
    queryPacket.setCompressionLimit(compressionLimit);
    if (compressionLimit != 0)
        queryPacket.setCompressionType(query.properties().getString(PACKET_COMPRESSION_TYPE, "lz4"));
    if (isLoggingFine())
        getLogger().fine("made QueryPacket: " + queryPacket);
    Result result = null;
    CacheKey cacheKey = null;
    if (cacheControl.useCache(query)) {
        cacheKey = new CacheKey(queryPacket);
        result = getCached(cacheKey, queryPacket.getQueryPacketData(), query);
    }
    if (result == null) {
        result = doSearch2(query, queryPacket, cacheKey, execution);
        if (isLoggingFine())
            getLogger().fine("Result NOT retrieved from cache");
        if (query.getTraceLevel() >= 1)
            query.trace(getName() + " dispatch response: " + result, false, 1);
        result.trace(getName());
    }
    return result;
}

Example 64 with Item

use of com.yahoo.prelude.query.Item in project vespa by vespa-engine.

the class LiteralBoostSearcher method addTopLevelRankTerms.

/**
 * Adds a RankItem at the root of a query, but only if there is
 * at least one rank term in the specified RankItem.
 * If the root is already a RankItem, just append the new rank terms.
 *
 * @param rankTerms the new rank item to add.
 * @param query the query to add to
 */
private void addTopLevelRankTerms(RankItem rankTerms, Query query) {
    Item root = query.getModel().getQueryTree().getRoot();
    if (root instanceof RankItem) {
        for (Iterator<Item> i = rankTerms.getItemIterator(); i.hasNext(); ) {
            ((RankItem) root).addItem(i.next());
        }
    } else {
        rankTerms.addItem(0, root);
        query.getModel().getQueryTree().setRoot(rankTerms);
    }
}

Example 65 with Item

use of com.yahoo.prelude.query.Item in project vespa by vespa-engine.

the class QueryRewrite method extractAndNotRecursively.

private static CompositeItem extractAndNotRecursively(CompositeItem parent) {
    for (int i = 0; i < parent.getItemCount(); i++) {
        Item child = parent.getItem(i);
        Item possibleNewChild = optimizeAndNot(child);
        if (child != possibleNewChild) {
            parent.setItem(i, possibleNewChild);
        }
    }
    if (parent instanceof AndItem) {
        return extractAndNot((AndItem) parent);
    }
    return parent;
}