Example usage for org.apache.lucene.store MockDirectoryWrapper deleteFile

Introduction

In this page you can find the example usage for org.apache.lucene.store MockDirectoryWrapper deleteFile.

Prototype

@Override
    public synchronized void deleteFile(String name) throws IOException 

Source Link

Usage

From source file:org.elasticsearch.common.lucene.LuceneTests.java

License:Apache License

public void testCleanIndex() throws IOException {
    MockDirectoryWrapper dir = newMockDirectory();
    dir.setEnableVirusScanner(false);/*w  w  w  .j  av  a 2s  .c  o  m*/
    IndexWriterConfig iwc = newIndexWriterConfig();
    iwc.setIndexDeletionPolicy(NoDeletionPolicy.INSTANCE);
    iwc.setMergePolicy(NoMergePolicy.INSTANCE);
    iwc.setMaxBufferedDocs(2);
    IndexWriter writer = new IndexWriter(dir, iwc);
    Document doc = new Document();
    doc.add(new TextField("id", "1", random().nextBoolean() ? Field.Store.YES : Field.Store.NO));
    writer.addDocument(doc);
    writer.commit();

    doc = new Document();
    doc.add(new TextField("id", "2", random().nextBoolean() ? Field.Store.YES : Field.Store.NO));
    writer.addDocument(doc);

    doc = new Document();
    doc.add(new TextField("id", "3", random().nextBoolean() ? Field.Store.YES : Field.Store.NO));
    writer.addDocument(doc);

    writer.commit();
    doc = new Document();
    doc.add(new TextField("id", "4", random().nextBoolean() ? Field.Store.YES : Field.Store.NO));
    writer.addDocument(doc);

    writer.deleteDocuments(new Term("id", "2"));
    writer.commit();
    try (DirectoryReader open = DirectoryReader.open(writer, true)) {
        assertEquals(3, open.numDocs());
        assertEquals(1, open.numDeletedDocs());
        assertEquals(4, open.maxDoc());
    }
    writer.close();
    if (random().nextBoolean()) {
        for (String file : dir.listAll()) {
            if (file.startsWith("_1")) {
                // delete a random file
                dir.deleteFile(file);
                break;
            }
        }
    }
    Lucene.cleanLuceneIndex(dir);
    if (dir.listAll().length > 0) {
        for (String file : dir.listAll()) {
            if (file.startsWith("extra") == false) {
                assertEquals(file, "write.lock");
            }
        }
    }
    dir.close();
}

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