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

it.unimi.dsi.mg4j.index.BitStreamHPIndex

A {@linkplain BitStreamIndexWriter high-performance bitstream-based} index.

Implementing subclasses must provide access to the index bitstream (as it happens for a {@link BitStreamIndex}) but also to the positions stream, both at {@linkplain #getPositionsInputStream() byte} and {@linkplain #getPositionsInputBitStream(int) bit} level.

Wired implementations

The standard readers associated to an instance of this class are of type {@link BitStreamHPIndexReader}. 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

    JSAPResult jsapResult = jsap.parse( arg );
    if ( jsap.messagePrinted() ) return;
    final String basename = jsapResult.getString( "basename" );


    // Just to check that the index is of the right type
    final BitStreamHPIndex index = (BitStreamHPIndex)Index.getInstance( basename, false, false );
    
    final InputBitStream ibs = new InputBitStream( basename + DiskBasedIndex.INDEX_EXTENSION );
    final InputBitStream offsets = new InputBitStream( basename + DiskBasedIndex.OFFSETS_EXTENSION );
    final OutputBitStream numBitsPos = new OutputBitStream( basename + DiskBasedIndex.POSITIONS_NUMBER_OF_BITS_EXTENSION );
    long pos = 0, positionOffset = 0, o;

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

Wired implementations

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