com.github.liblevenshtein.transducer.factory.PositionFactory Maven / Gradle / Ivy

Show more of this group Show more artifacts with this name
Show all versions of liblevenshtein Show documentation

A library for spelling-correction based on Levenshtein Automata.

The newest version!

// Generated by delombok at Sun May 29 12:10:02 UTC 2016
package com.github.liblevenshtein.transducer.factory;

import java.io.Serializable;
import com.github.liblevenshtein.transducer.Position;
import com.github.liblevenshtein.transducer.SpecialPosition;

/**
 * Builds position vectors for the given algorithm.
 * @author Dylon Edwards
 * @since 2.1.0
 */
public class PositionFactory implements Serializable {
  private static final long serialVersionUID = 1L;

  /**
   * Builds a dummy position.
   * @return Dummy position.
   */
  public Position build() {
    return new Position(-1, -1);
  }

  /**
   * Builds a position vector for the standard, Levenshtein algorihtm.
   * @param termIndex Current index of the spelling candidate.
   * @param numErrors Number of accumulated errors at index {@code termIndex}.
   * @return New position vector having index {@code termIndex} and error
   * {@code numErrors}.
   */
  public Position build(final int termIndex, final int numErrors) {
    return new Position(termIndex, numErrors);
  }

  /**
   * Builds a position vector for the transposition and merge-and-split,
   * Levenshtein algorihtms.
   * @param termIndex Current index of the spelling candidate.
   * @param numErrors Number of accumulated errors at index {@code termIndex}.
   * @param isSpecial Either {@code 1} or {@code 0}, depending on whether the
   * position is a special case (numErrors.g. a transposition position).
   * @return New position vector having index {@code termIndex}, error
   * {@code numErrors}, and special marker {@code isSpecial}.
   */
  public Position build(final int termIndex, final int numErrors, final boolean isSpecial) {
    if (isSpecial) {
      return new SpecialPosition(termIndex, numErrors);
    }
    return new Position(termIndex, numErrors);
  }

  @java.lang.SuppressWarnings("all")
  @edu.umd.cs.findbugs.annotations.SuppressFBWarnings(justification = "generated code")
  @javax.annotation.Generated("lombok")
  public PositionFactory() {
  }
}