Java Tokenizer.create方法代碼示例

import org.lemurproject.galago.core.tokenize.Tokenizer; //導入方法依賴的package包/類
public Indexer(/*Parameters p ? */) throws Exception {
  
  // basic plan:
  //   pass universal parser a file path
  //   universal parser will extract a stream of documents (or just one)
  //   passes them to the tokenzier
  //   tokenizer will extract word tokens
  //   passes documents to the numberer
  //   a number is assigned
  //   a fully formed document is the given to the index
  
  indexer = new UniversalParser(new FakeParameters(Parameters.create()));
  Tokenizer p2 = Tokenizer.create(Parameters.create());
  SequentialDocumentNumberer p3 = new SequentialDocumentNumberer();

  Parameters indexParams = Parameters.create();
  indexParams.set("shardDirectory", "/path/to/store/output/");
  indexParams.set("indexBlockSize", 100);
  indexParams.set("radix", 2);
  indexParams.set("mergeMode", "local");
  indexParams.set("stemming", true);
  indexParams.set("makecorpus", false);

  index = new GeometricIndex(new FakeParameters(indexParams));
  retrieval = new LocalRetrieval(index);
  // now link these steps together
  indexer.setProcessor(p2);
  p2.setProcessor(p3);
  p3.setProcessor(index);
}
 

import org.lemurproject.galago.core.tokenize.Tokenizer; //導入方法依賴的package包/類
@Override
public Tokenizer getTokenizer() {
    return Tokenizer.create(this.index.getManifest());
}
 

import org.lemurproject.galago.core.tokenize.Tokenizer; //導入方法依賴的package包/類
public AnchorTextDocumentCreator(TupleFlowParameters tp) {
  tokenizer = Tokenizer.create(tp.getJSON());
}
 

import org.lemurproject.galago.core.tokenize.Tokenizer; //導入方法依賴的package包/類
@Test
public void testMergeFlushedSequentialIndexes() throws Exception {
    File index1 = null;
    File index2 = null;
    File indexmerged = null;
    try {
        Parameters p1 = Parameters.parseString("{\"documentNumberOffset\":0}");
        Parameters p2 = Parameters.parseString("{\"documentNumberOffset\":1000}");
        MemoryIndex mi1 = new MemoryIndex(new FakeParameters(p1));
        MemoryIndex mi2 = new MemoryIndex(new FakeParameters(p2));

        Tokenizer tok = Tokenizer.create(p1);
        for (int i = 0; i < 100; i++) {
            Document d1 = new Document("DOCS1-" + i, "this is sample document " + i);
            Document d2 = new Document("DOCS2-" + i, "this is a different document " + i);
            tok.tokenize(d1);
            tok.tokenize(d2);
            mi1.process(d1);
            mi2.process(d2);
        }

        index1 = FileUtility.createTemporaryDirectory();
        FlushToDisk.flushMemoryIndex(mi1, index1.getAbsolutePath());

        index2 = FileUtility.createTemporaryDirectory();
        FlushToDisk.flushMemoryIndex(mi2, index2.getAbsolutePath());

        AppTest.verifyIndexStructures(index1);
        AppTest.verifyIndexStructures(index2);

        indexmerged = FileUtility.createTemporaryDirectory();

        Parameters mergeParams = Parameters.create();
        mergeParams.set("indexPath", indexmerged.getAbsolutePath());
        ArrayList<String> inputs = new ArrayList<String>();
        inputs.add(index1.getAbsolutePath());
        inputs.add(index2.getAbsolutePath());
        mergeParams.set("inputPath", inputs);
        mergeParams.set("renumberDocuments", false);
        App.run("merge-index", mergeParams, System.out);

        AppTest.verifyIndexStructures(indexmerged);

        DiskIndex di_index1 = new DiskIndex(index1.getAbsolutePath());
        DiskIndex di_index2 = new DiskIndex(index2.getAbsolutePath());
        DiskIndex di_merged = new DiskIndex(indexmerged.getAbsolutePath());

        assertEquals(di_index1.getIndexPartStatistics("postings").collectionLength, 500);
        assertEquals(di_index2.getIndexPartStatistics("postings").collectionLength, 600);
        assertEquals(di_merged.getIndexPartStatistics("postings").collectionLength, 1100);

        assertEquals(di_index1.getIndexPartStatistics("postings").vocabCount, 104);
        assertEquals(di_index2.getIndexPartStatistics("postings").vocabCount, 105);
        assertEquals(di_merged.getIndexPartStatistics("postings").vocabCount, 106);

        assertEquals(di_index1.getIndexPartStatistics("postings").highestDocumentCount, 100);
        assertEquals(di_index2.getIndexPartStatistics("postings").highestDocumentCount, 100);
        assertEquals(di_merged.getIndexPartStatistics("postings").highestDocumentCount, 200);

        assertEquals(di_index1.getIndexPartStatistics("postings").highestFrequency, 100);
        assertEquals(di_index2.getIndexPartStatistics("postings").highestFrequency, 100);
        assertEquals(di_merged.getIndexPartStatistics("postings").highestFrequency, 200);

        assertEquals(di_merged.getName(50), mi1.getName(50));
        assertEquals(di_merged.getName(1050), mi2.getName(1050));

    } finally {
        if (index1 != null) {
            FSUtil.deleteDirectory(index1);
        }
        if (index2 != null) {
            FSUtil.deleteDirectory(index2);
        }
        if (indexmerged != null) {
            FSUtil.deleteDirectory(indexmerged);
        }
    }
}
 

import org.lemurproject.galago.core.tokenize.Tokenizer; //導入方法依賴的package包/類
/**
 * Get a new Tokenizer based on the parameter settings. Since Tokenizer is not assumed to be threadsafe,
 * we expect to allocate one for each request.
 * @return Tokenizer instance.
 */
public Tokenizer getTokenizer() {
  return Tokenizer.create(opts);
}