dir.close();
}
public void testEnforceDeletions() throws Exception {
Directory dir = newDirectory();
RandomIndexWriter writer = new RandomIndexWriter(
random,
dir,
newIndexWriterConfig(TEST_VERSION_CURRENT, new MockAnalyzer(random)).
setMergeScheduler(new SerialMergeScheduler()).
// asserts below requires no unexpected merges:
setMergePolicy(newLogMergePolicy(10))
);
// NOTE: cannot use writer.getReader because RIW (on
// flipping a coin) may give us a newly opened reader,
// but we use .reopen on this reader below and expect to
// (must) get an NRT reader:
IndexReader reader = IndexReader.open(writer.w, true);
// same reason we don't wrap?
IndexSearcher searcher = newSearcher(reader, false);
// add a doc, refresh the reader, and check that its there
Document doc = new Document();
doc.add(newField("id", "1", Field.Store.YES, Field.Index.NOT_ANALYZED));
writer.addDocument(doc);
reader = refreshReader(reader);
searcher.close();
searcher = newSearcher(reader, false);
TopDocs docs = searcher.search(new MatchAllDocsQuery(), 1);
assertEquals("Should find a hit...", 1, docs.totalHits);
final Filter startFilter = new QueryWrapperFilter(new TermQuery(new Term("id", "1")));
// ignore deletions
CachingWrapperFilter filter = new CachingWrapperFilter(startFilter, CachingWrapperFilter.DeletesMode.IGNORE);
docs = searcher.search(new MatchAllDocsQuery(), filter, 1);
assertEquals("[query + filter] Should find a hit...", 1, docs.totalHits);
ConstantScoreQuery constantScore = new ConstantScoreQuery(filter);
docs = searcher.search(constantScore, 1);
assertEquals("[just filter] Should find a hit...", 1, docs.totalHits);
// now delete the doc, refresh the reader, and see that it's not there
_TestUtil.keepFullyDeletedSegments(writer.w);
writer.deleteDocuments(new Term("id", "1"));
reader = refreshReader(reader);
searcher.close();
searcher = newSearcher(reader, false);
docs = searcher.search(new MatchAllDocsQuery(), filter, 1);
assertEquals("[query + filter] Should *not* find a hit...", 0, docs.totalHits);
docs = searcher.search(constantScore, 1);
assertEquals("[just filter] Should find a hit...", 1, docs.totalHits);
// force cache to regenerate:
filter = new CachingWrapperFilter(startFilter, CachingWrapperFilter.DeletesMode.RECACHE);
writer.addDocument(doc);
reader = refreshReader(reader);
searcher.close();
searcher = newSearcher(reader, false);
docs = searcher.search(new MatchAllDocsQuery(), filter, 1);
assertEquals("[query + filter] Should find a hit...", 1, docs.totalHits);
constantScore = new ConstantScoreQuery(filter);
docs = searcher.search(constantScore, 1);
assertEquals("[just filter] Should find a hit...", 1, docs.totalHits);
// NOTE: important to hold ref here so GC doesn't clear
// the cache entry! Else the assert below may sometimes
// fail:
IndexReader oldReader = reader;
// make sure we get a cache hit when we reopen reader
// that had no change to deletions
reader = refreshReader(reader);
assertTrue(reader != oldReader);
searcher.close();
searcher = newSearcher(reader, false);
int missCount = filter.missCount;
docs = searcher.search(constantScore, 1);
assertEquals("[just filter] Should find a hit...", 1, docs.totalHits);
assertEquals(missCount, filter.missCount);
// now delete the doc, refresh the reader, and see that it's not there
writer.deleteDocuments(new Term("id", "1"));
reader = refreshReader(reader);
searcher.close();
searcher = newSearcher(reader, false);
missCount = filter.missCount;
docs = searcher.search(new MatchAllDocsQuery(), filter, 1);
assertEquals(missCount+1, filter.missCount);
assertEquals("[query + filter] Should *not* find a hit...", 0, docs.totalHits);
docs = searcher.search(constantScore, 1);
assertEquals("[just filter] Should *not* find a hit...", 0, docs.totalHits);
// apply deletions dynamically
filter = new CachingWrapperFilter(startFilter, CachingWrapperFilter.DeletesMode.DYNAMIC);
writer.addDocument(doc);
reader = refreshReader(reader);
searcher.close();
searcher = newSearcher(reader, false);
docs = searcher.search(new MatchAllDocsQuery(), filter, 1);
assertEquals("[query + filter] Should find a hit...", 1, docs.totalHits);
constantScore = new ConstantScoreQuery(filter);
docs = searcher.search(constantScore, 1);
assertEquals("[just filter] Should find a hit...", 1, docs.totalHits);
// now delete the doc, refresh the reader, and see that it's not there
writer.deleteDocuments(new Term("id", "1"));
reader = refreshReader(reader);
searcher.close();
searcher = newSearcher(reader, false);
docs = searcher.search(new MatchAllDocsQuery(), filter, 1);
assertEquals("[query + filter] Should *not* find a hit...", 0, docs.totalHits);
missCount = filter.missCount;
docs = searcher.search(constantScore, 1);
assertEquals("[just filter] Should *not* find a hit...", 0, docs.totalHits);
// doesn't count as a miss
assertEquals(missCount, filter.missCount);
// NOTE: silliness to make sure JRE does not optimize
// away our holding onto oldReader to prevent
// CachingWrapperFilter's WeakHashMap from dropping the
// entry:
assertTrue(oldReader != null);
searcher.close();
reader.close();
writer.close();
dir.close();
}