// Dstl (c) Crown Copyright 2017
package uk.gov.dstl.baleen.annotators.regex;

import java.util.Collections;
import java.util.regex.Matcher;

import org.apache.uima.jcas.JCas;

import com.google.common.collect.ImmutableSet;

import uk.gov.dstl.baleen.annotators.regex.helpers.AbstractRegexNPAnnotator;
import uk.gov.dstl.baleen.core.pipelines.orderers.AnalysisEngineAction;
import uk.gov.dstl.baleen.types.common.Person;

/**
 * Annotate callsigns using a regular expression and phrase chunking where available
 *
 * <p>Noun phrases in the document are compared against the following regular expression, with
 * matches being annotated as a person.
 *
 * <pre>\\bC[\\\\|/]S [A-Z ]+\\b</pre>
 */
public class Callsign extends AbstractRegexNPAnnotator<Person> {

  public static final String REGEX_CS = "\\bC[\\\\|/]S [A-Z ]+\\b";

  /** New instance. */
  public Callsign() {
    super(REGEX_CS, true, 1.0);
  }

  @Override
  protected Person create(JCas jCas, Matcher matcher) {
    return new Person(jCas);
  }

  @Override
  public AnalysisEngineAction getAction() {
    return new AnalysisEngineAction(Collections.emptySet(), ImmutableSet.of(Person.class));
  }
}
