de.gwdg.metadataqa.marc.definition.general.parser.Control008All00DateParser Maven / Gradle / Ivy

Go to download
package de.gwdg.metadataqa.marc.definition.general.parser;

import java.io.Serializable;
import java.time.LocalDate;
import java.time.format.DateTimeFormatter;
import java.time.format.DateTimeFormatterBuilder;
import java.time.format.DateTimeParseException;
import java.time.temporal.ChronoField;
import java.util.HashMap;
import java.util.Map;

public class Control008All00DateParser implements SubfieldContentParser, Serializable {

  private String dateFormat = "yyMMdd";
  private DateTimeFormatter marc;
  DateTimeFormatter iso = DateTimeFormatter.ISO_DATE;

  public Control008All00DateParser() {
    initialize();
  }

  public Control008All00DateParser(String dateFormat) {
    this.dateFormat = dateFormat;
    initialize();
  }

  private void initialize() {
    // marc = DateTimeFormatter.ofPattern(dateFormat, Locale.getDefault());

    marc = new DateTimeFormatterBuilder()
      .appendValueReduced(ChronoField.YEAR_OF_ERA, 2, 2,
        LocalDate.now().minusYears(80))
      .appendPattern("MMdd")
      .toFormatter();
  }

  @Override
  public Map parse(String content) throws ParserException {
    Map extra = new HashMap<>();

    try {
      LocalDate date = LocalDate.parse(content, marc);
      extra.put("normalized", date.format(iso));
    } catch(DateTimeParseException e) {
      throw new ParserException(String.format(
        "Invalid content: '%s'. %s", content, e.getMessage()));
    }
    return extra;
  }
}