Examples of it.unimi.dsi.mg4j.index.BitStreamIndex

it.unimi.dsi.mg4j.index.BitStreamIndex
A {@linkplain BitStreamIndexWriter bitstream-based} index. Instances of this class contains additional index data related to compression, such as the codes used for each part of the index.
Implementing subclasses must provide access to the index bitstream both at {@linkplain #getInputStream() byte} and {@linkplain #getInputBitStream(int) bit} level.A bitstream-based index usually exposes {@linkplain #termMap term}or {@linkplain #prefixMap prefix} maps, but this is not compulsory. Additionally,the index could also expose the {@linkplain #offsets offset list}and the {@linkplain #sizes size list}; the latter, in particular, is compulsory with certain codings.
Wired implementations

The standard readers associated to an instance of this class are of type {@link BitStreamIndexReader}. Nonetheless, it is possible to generate automatically sources for wired classes that work only for a particular set of codings and flags. The wired classes will be fetched automagically by reflection, if available. Please read the section about performance in the MG4J manual. @author Sebastiano Vigna @since 1.1

        DataOutputStream dos = new DataOutputStream( socket.getOutputStream() );
        boolean randomAccess = dis.readBoolean();
        boolean documentSizes = dis.readBoolean();
        
        if ( index instanceof BitStreamIndex && ! forceRemoteIndex ) {
          BitStreamIndex localIndex = (BitStreamIndex)index;
          if ( randomAccess && localIndex.offsets == null ) {
            randomAccess = false;
            LOGGER.warn( "Random access will not be available for index " + localIndex );
          }
          /** Note that in case of Golomb or interpolative position coding

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import it.unimi.dsi.mg4j.document.StringArrayDocumentCollection;


public class OrderedAndDocumentIteratorTest extends TestCase {


  public void testSkipBug() throws QueryParserException, QueryBuilderVisitorException, IOException, ConfigurationException, SecurityException, URISyntaxException, ClassNotFoundException, InstantiationException, IllegalAccessException, InvocationTargetException, NoSuchMethodException {
    BitStreamIndex index;
    SimpleParser simpleParser;
    String basename = File.createTempFile( getClass().getSimpleName(), "test" ).getCanonicalPath();
    new IndexBuilder( basename, new StringArrayDocumentCollection( "a a b c d e" ) ).run();
    index = DiskBasedIndex.getInstance( basename + "-text", true, true );
    simpleParser = new SimpleParser( index.termProcessor );

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Related Classes of it.unimi.dsi.mg4j.index.BitStreamIndex

it.unimi.dsi.mg4j.index.remote.IndexServer

it.unimi.dsi.mg4j.search.OrderedAndDocumentIteratorTest

it.unimi.dsi.util.Interval

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Examples of it.unimi.dsi.mg4j.index.BitStreamIndex

Wired implementations

Related Classes of it.unimi.dsi.mg4j.index.BitStreamIndex