ExcelTimestamps.java

/*
 * Copyright (c) 2017 OBiBa. All rights reserved.
 *
 * This program and the accompanying materials
 * are made available under the terms of the GNU Public License v3.0.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */

package org.obiba.magma.datasource.excel;

import java.io.File;
import java.util.Date;

import javax.validation.constraints.NotNull;

import org.obiba.magma.Timestamps;
import org.obiba.magma.Value;
import org.obiba.magma.type.DateTimeType;

public class ExcelTimestamps implements Timestamps {

  private final File excelFile;

  public ExcelTimestamps(File excelFile) {
    this.excelFile = excelFile;
  }

  @NotNull
  @Override
  public Value getCreated() {
    // Not currently possible to read a file creation timestamp. Coming in JDK 7 NIO.
    return DateTimeType.get().nullValue();
  }

  @NotNull
  @Override
  public Value getLastUpdate() {
    return excelFile != null && excelFile.exists()
        ? DateTimeType.get().valueOf(new Date(excelFile.lastModified()))
        : DateTimeType.get().nullValue();
  }

}