Examples with MultiReader org.apache.lucene.index.MultiReader used on opensource projects

Example 36 with MultiReader

use of org.apache.lucene.index.MultiReader in project lucene-solr by apache.

the class TestIndexSearcher method testGetQueryCachingPolicy.

public void testGetQueryCachingPolicy() throws IOException {
    IndexSearcher searcher = new IndexSearcher(new MultiReader());
    assertEquals(IndexSearcher.getDefaultQueryCachingPolicy(), searcher.getQueryCachingPolicy());
    QueryCachingPolicy dummyPolicy = new QueryCachingPolicy() {

        @Override
        public boolean shouldCache(Query query) throws IOException {
            return false;
        }

        @Override
        public void onUse(Query query) {
        }
    };
    searcher.setQueryCachingPolicy(dummyPolicy);
    assertEquals(dummyPolicy, searcher.getQueryCachingPolicy());
    IndexSearcher.setDefaultQueryCachingPolicy(dummyPolicy);
    searcher = new IndexSearcher(new MultiReader());
    assertEquals(dummyPolicy, searcher.getQueryCachingPolicy());
}

Example 37 with MultiReader

use of org.apache.lucene.index.MultiReader in project lucene-solr by apache.

the class QueryUtils method wrapUnderlyingReader.

/**
   * Given an IndexSearcher, returns a new IndexSearcher whose IndexReader
   * is a MultiReader containing the Reader of the original IndexSearcher,
   * as well as several "empty" IndexReaders -- some of which will have
   * deleted documents in them.  This new IndexSearcher should
   * behave exactly the same as the original IndexSearcher.
   * @param s the searcher to wrap
   * @param edge if negative, s will be the first sub; if 0, s will be in the middle, if positive s will be the last sub
   */
public static IndexSearcher wrapUnderlyingReader(Random random, final IndexSearcher s, final int edge) throws IOException {
    IndexReader r = s.getIndexReader();
    // we can't put deleted docs before the nested reader, because
    // it will throw off the docIds
    IndexReader[] readers = new IndexReader[] { edge < 0 ? r : new MultiReader(), new MultiReader(), new MultiReader(edge < 0 ? emptyReader(4) : new MultiReader(), new MultiReader(), 0 == edge ? r : new MultiReader()), 0 < edge ? new MultiReader() : emptyReader(7), new MultiReader(), new MultiReader(0 < edge ? new MultiReader() : emptyReader(5), new MultiReader(), 0 < edge ? r : new MultiReader()) };
    IndexSearcher out = LuceneTestCase.newSearcher(new MultiReader(readers));
    out.setSimilarity(s.getSimilarity(true));
    return out;
}

Example 38 with MultiReader

use of org.apache.lucene.index.MultiReader in project lucene-solr by apache.

the class TestFieldCacheSort method testEmptyIndex.

/** test sorts when there's nothing in the index */
public void testEmptyIndex() throws Exception {
    IndexSearcher empty = newSearcher(new MultiReader());
    Query query = new TermQuery(new Term("contents", "foo"));
    Sort sort = new Sort();
    TopDocs td = empty.search(query, 10, sort, true, true);
    assertEquals(0, td.totalHits);
    sort.setSort(SortField.FIELD_DOC);
    td = empty.search(query, 10, sort, true, true);
    assertEquals(0, td.totalHits);
    sort.setSort(new SortField("int", SortField.Type.INT), SortField.FIELD_DOC);
    td = empty.search(query, 10, sort, true, true);
    assertEquals(0, td.totalHits);
    sort.setSort(new SortField("string", SortField.Type.STRING, true), SortField.FIELD_DOC);
    td = empty.search(query, 10, sort, true, true);
    assertEquals(0, td.totalHits);
    sort.setSort(new SortField("string_val", SortField.Type.STRING_VAL, true), SortField.FIELD_DOC);
    td = empty.search(query, 10, sort, true, true);
    assertEquals(0, td.totalHits);
    sort.setSort(new SortField("float", SortField.Type.FLOAT), new SortField("string", SortField.Type.STRING));
    td = empty.search(query, 10, sort, true, true);
    assertEquals(0, td.totalHits);
}

Example 39 with MultiReader

use of org.apache.lucene.index.MultiReader in project lucene-solr by apache.

the class TestBooleanRewrites method testRemoveMatchAllFilter.

public void testRemoveMatchAllFilter() throws IOException {
    IndexSearcher searcher = newSearcher(new MultiReader());
    BooleanQuery bq = new BooleanQuery.Builder().add(new TermQuery(new Term("foo", "bar")), Occur.MUST).add(new MatchAllDocsQuery(), Occur.FILTER).build();
    assertEquals(new TermQuery(new Term("foo", "bar")), searcher.rewrite(bq));
    bq = new BooleanQuery.Builder().setMinimumNumberShouldMatch(random().nextInt(5)).add(new TermQuery(new Term("foo", "bar")), Occur.MUST).add(new TermQuery(new Term("foo", "baz")), Occur.MUST).add(new MatchAllDocsQuery(), Occur.FILTER).build();
    BooleanQuery expected = new BooleanQuery.Builder().setMinimumNumberShouldMatch(bq.getMinimumNumberShouldMatch()).add(new TermQuery(new Term("foo", "bar")), Occur.MUST).add(new TermQuery(new Term("foo", "baz")), Occur.MUST).build();
    assertEquals(expected, searcher.rewrite(bq));
}

Example 40 with MultiReader

use of org.apache.lucene.index.MultiReader in project lucene-solr by apache.

the class TestBoostQuery method testRewrite.

public void testRewrite() throws IOException {
    IndexSearcher searcher = new IndexSearcher(new MultiReader());
    // inner queries are rewritten
    Query q = new BoostQuery(new BooleanQuery.Builder().build(), 2);
    assertEquals(new BoostQuery(new MatchNoDocsQuery(), 2), searcher.rewrite(q));
    // boosts are merged
    q = new BoostQuery(new BoostQuery(new MatchAllDocsQuery(), 3), 2);
    assertEquals(new BoostQuery(new MatchAllDocsQuery(), 6), searcher.rewrite(q));
    // scores are not computed when the boost is 0
    q = new BoostQuery(new MatchAllDocsQuery(), 0);
    assertEquals(new BoostQuery(new ConstantScoreQuery(new MatchAllDocsQuery()), 0), searcher.rewrite(q));
}