CreationDateQueryFactory.java

package won.matcher.solr.query.factory;

import org.apache.jena.query.Dataset;
import won.protocol.util.NeedModelWrapper;

import java.time.ZonedDateTime;
import java.time.temporal.ChronoUnit;
import java.time.temporal.TemporalUnit;

/**
 * Created by hfriedrich on 18.08.2016.
 */
public class CreationDateQueryFactory extends NeedDatasetQueryFactory
{
  private static String CREATION_DATE_SOLR_FIELD = "_graph.http___purl.org_dc_terms_created._value";

  private ZonedDateTime startDate;
  private ZonedDateTime endDate;

  public CreationDateQueryFactory(Dataset needDataset, long timeWindow, TemporalUnit unit) {
    super(needDataset);

    NeedModelWrapper needModelWrapper = new NeedModelWrapper(needDataset);
    ZonedDateTime creationDate = needModelWrapper.getCreationDate();
    startDate = creationDate.plus(timeWindow, ChronoUnit.MINUTES);
    startDate = creationDate.minus(timeWindow, unit);
    endDate = creationDate.plus(timeWindow, unit);
  }

  @Override
  protected String makeQueryString() {
    return new DateIntervalQueryFactory(CREATION_DATE_SOLR_FIELD, startDate, endDate).createQuery();
  }
}