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

Example 6 with PrefixItem

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

the class YqlParser method instantiateWordItem.

@NonNull
private Item instantiateWordItem(String field, String rawWord, OperatorNode<ExpressionOperator> ast, Class<?> parent, SegmentWhen segmentPolicy, boolean exactMatch, Language language) {
    String wordData = rawWord;
    if (getAnnotation(ast, NFKC, Boolean.class, Boolean.FALSE, "setting for whether to NFKC normalize input data")) {
        // NOTE: If this is set to FALSE (default), we will still NFKC normalize text data
        // during tokenization/segmentation, as that is always turned on also on the indexing side.
        wordData = normalizer.normalize(wordData);
    }
    boolean fromQuery = getAnnotation(ast, IMPLICIT_TRANSFORMS, Boolean.class, Boolean.TRUE, IMPLICIT_TRANSFORMS_DESCRIPTION);
    boolean prefixMatch = getAnnotation(ast, PREFIX, Boolean.class, Boolean.FALSE, "setting for whether to use prefix match of input data");
    boolean suffixMatch = getAnnotation(ast, SUFFIX, Boolean.class, Boolean.FALSE, "setting for whether to use suffix match of input data");
    boolean substrMatch = getAnnotation(ast, SUBSTRING, Boolean.class, Boolean.FALSE, "setting for whether to use substring match of input data");
    Preconditions.checkArgument((prefixMatch ? 1 : 0) + (substrMatch ? 1 : 0) + (suffixMatch ? 1 : 0) < 2, "Only one of prefix, substring and suffix can be set.");
    @NonNull final TaggableItem wordItem;
    if (exactMatch) {
        wordItem = new ExactStringItem(wordData, fromQuery);
    } else if (prefixMatch) {
        wordItem = new PrefixItem(wordData, fromQuery);
    } else if (suffixMatch) {
        wordItem = new SuffixItem(wordData, fromQuery);
    } else if (substrMatch) {
        wordItem = new SubstringItem(wordData, fromQuery);
    } else {
        switch(segmentPolicy) {
            case NEVER:
                wordItem = new WordItem(wordData, fromQuery);
                break;
            case POSSIBLY:
                if (shouldResegmentWord(field, fromQuery)) {
                    wordItem = resegment(field, ast, wordData, fromQuery, parent, language);
                } else {
                    wordItem = new WordItem(wordData, fromQuery);
                }
                break;
            case ALWAYS:
                wordItem = resegment(field, ast, wordData, fromQuery, parent, language);
                break;
            default:
                throw new IllegalArgumentException("Unexpected segmenting rule: " + segmentPolicy);
        }
    }
    if (wordItem instanceof WordItem) {
        prepareWord(field, ast, fromQuery, (WordItem) wordItem);
    }
    if (// mark the language used, unless it's the default
    language != Language.ENGLISH)
        ((Item) wordItem).setLanguage(language);
    return (Item) leafStyleSettings(ast, wordItem);
}

Example 7 with PrefixItem

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

the class ParseTestCase method testIndexedPrefix.

@Test
public void testIndexedPrefix() {
    Item root = tester.assertParsed("foo.bar:prefix*", "foo.bar:prefix*", Query.Type.ANY);
    assertTrue(root instanceof PrefixItem);
}

Example 8 with PrefixItem

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

the class ParseTestCase method testPrefixAndWordTerms.

@Test
public void testPrefixAndWordTerms() {
    Item root = tester.assertParsed("OR foo prefix* bar", "foo prefix* bar", Query.Type.ANY);
    assertTrue(((OrItem) root).getItem(1) instanceof PrefixItem);
}