Class Names

basex-core/src/main/java/org/basex/index/name/Names.java:22–191

This class indexes and organizes the element or attribute names used in an XML document. @author BaseX Team, BSD License @author Christian Gruen @author Lukas Kircher

 * @author Lukas Kircher
 */
public final class Names extends TokenSet implements Index {
  /** Statistical information. */
  private Stats[] stats;
  /** Meta data. */
  private final MetaData meta;

  /**
   * Default constructor.
   * @param meta meta data
   */
  public Names(final MetaData meta) {
    this.meta = meta;
    stats = new Stats[Array.INITIAL_CAPACITY];
  }

  /**
   * Constructor, specifying an input file.
   * @param in input stream
   * @param meta meta data
   * @throws IOException I/O exception
   */
  public Names(final DataInput in, final MetaData meta) throws IOException {
    super(in);
    this.meta = meta;
    stats = new Stats[keys.length];
    for(int i = 1; i < size; i++) stats[i] = new Stats(in);
  }

  /**
   * Initializes the index.
   */
  public void init() {
    for(int i = 1; i < size; i++) stats[i] = new Stats();
  }

  /**
   * Stores a name, updates the statistics, and returns the index of the name.
   * @param name name to be added
   * @return index
   */
  public int store(final byte[] name) {
    return store(name, null);
  }

  /**
   * Stores a name, updates the statistics, and returns the index of the name.
   * @param name name to be added
   * @param value value, added to statistics (can be {@code null})
   * @return index
   */
  public int store(final byte[] name, final byte[] value) {
    final int i = put(name);
    Stats s = stats[i];
    if(s == null) {
      s = new Stats();
      stats[i] = s;
    }
    if(value != null) s.add(value, meta);