Package net.pms.dlna

Source Code of net.pms.dlna.DLNAMediaDatabase

/*
* PS3 Media Server, for streaming any medias to your PS3.
* Copyright (C) 2008  A.Brochard
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; version 2
* of the License only.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
*/
package net.pms.dlna;

import com.sun.jna.Platform;
import java.awt.Component;
import java.io.File;
import java.sql.*;
import java.util.ArrayList;
import javax.swing.JFrame;
import javax.swing.JOptionPane;
import javax.swing.SwingUtilities;
import net.pms.Messages;
import net.pms.PMS;
import net.pms.configuration.FormatConfiguration;
import net.pms.configuration.PmsConfiguration;
import net.pms.formats.Format;
import net.pms.formats.v2.SubtitleType;
import org.apache.commons.io.FileUtils;
import static org.apache.commons.lang3.StringUtils.*;
import org.h2.engine.Constants;
import org.h2.jdbcx.JdbcConnectionPool;
import org.h2.jdbcx.JdbcDataSource;
import org.h2.tools.DeleteDbFiles;
import org.h2.tools.RunScript;
import org.h2.tools.Script;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

/**
* This class provides methods for creating and maintaining the database where
* media information is stored. Scanning media and interpreting the data is
* intensive, so the database is used to cache scanned information to be reused
* later.
*/
public class DLNAMediaDatabase implements Runnable {
  private static final Logger LOGGER = LoggerFactory.getLogger(DLNAMediaDatabase.class);
  private static final PmsConfiguration configuration = PMS.getConfiguration();

  private String url;
  private String dbDir;
  private String dbName;
  public static final String NONAME = "###";
  private Thread scanner;
  private JdbcConnectionPool cp;
  private int dbCount;

  /**
   * The database version should be incremented when we change anything to
   * do with the database since the last released version.
   */
  private final String latestVersion = "1";

  // Database column sizes
  private final int SIZE_CODECV = 32;
  private final int SIZE_FRAMERATE = 32;
  private final int SIZE_ASPECTRATIO_DVDISO = 32;
  private final int SIZE_ASPECTRATIO_CONTAINER = 5;
  private final int SIZE_ASPECTRATIO_VIDEOTRACK = 5;
  private final int SIZE_AVC_LEVEL = 3;
  private final int SIZE_CONTAINER = 32;
  private final int SIZE_MATRIX_COEFFICIENTS = 16;
  private final int SIZE_MODEL = 128;
  private final int SIZE_MUXINGMODE = 32;
  private final int SIZE_FRAMERATE_MODE = 16;
  private final int SIZE_STEREOSCOPY = 255;
  private final int SIZE_LANG = 3;
  private final int SIZE_FLAVOR = 128;
  private final int SIZE_SAMPLEFREQ = 16;
  private final int SIZE_CODECA = 32;
  private final int SIZE_ALBUM = 255;
  private final int SIZE_ARTIST = 255;
  private final int SIZE_SONGNAME = 255;
  private final int SIZE_GENRE = 64;

  public DLNAMediaDatabase(String name) {
    String dir = "database";
    dbName = name;
    File fileDir = new File(dir);

    if (Platform.isWindows()) {
      String profileDir = configuration.getProfileDirectory();
      url = String.format("jdbc:h2:%s\\%s/%s", profileDir, dir, dbName);
      fileDir = new File(profileDir, dir);
    } else {
      url = Constants.START_URL + dir + "/" + dbName;
    }
    dbDir = fileDir.getAbsolutePath();
    LOGGER.debug("Using database URL: " + url);
    LOGGER.info("Using database located at: " + dbDir);

    try {
      Class.forName("org.h2.Driver");
    } catch (ClassNotFoundException e) {
      LOGGER.error(null, e);
    }

    JdbcDataSource ds = new JdbcDataSource();
    ds.setURL(url);
    ds.setUser("sa");
    ds.setPassword("");
    cp = JdbcConnectionPool.create(ds);
  }

  private Connection getConnection() throws SQLException {
    return cp.getConnection();
  }

  public void init(boolean force) {
    dbCount = -1;
    String version = null;
    Connection conn = null;
    ResultSet rs = null;
    Statement stmt = null;

    try {
      conn = getConnection();
    } catch (SQLException se) {
      final File dbFile = new File(dbDir + File.separator + dbName + ".data.db");
      final File dbDirectory = new File(dbDir);
      if (dbFile.exists() || (se.getErrorCode() == 90048)) { // Cache is corrupt or a wrong version, so delete it
        FileUtils.deleteQuietly(dbDirectory);
        if (!dbDirectory.exists()) {
          LOGGER.debug("The cache has been deleted because it was corrupt or had the wrong version");
        } else {
          if (!net.pms.PMS.isHeadless()) {
            JOptionPane.showMessageDialog(
              (JFrame) (SwingUtilities.getWindowAncestor((Component) PMS.get().getFrame())),
              String.format(Messages.getString("DLNAMediaDatabase.5"), dbDir),
              Messages.getString("Dialog.Error"),
              JOptionPane.ERROR_MESSAGE);
          }
          LOGGER.debug("Damaged cache can't be deleted. Stop the program and delete the folder \"" + dbDir + "\" manually");
          configuration.setUseCache(false);
          return;
        }
      } else {
        LOGGER.debug("Cache connection error: " + se.getMessage());
        configuration.setUseCache(false);
        return;
      }
    } finally {
      close(conn);
    }

    try {
      conn = getConnection();

      stmt = conn.createStatement();
      rs = stmt.executeQuery("SELECT count(*) FROM FILES");
      if (rs.next()) {
        dbCount = rs.getInt(1);
      }
      rs.close();
      stmt.close();

      stmt = conn.createStatement();
      rs = stmt.executeQuery("SELECT VALUE FROM METADATA WHERE KEY = 'VERSION'");
      if (rs.next()) {
        version = rs.getString(1);
      }
    } catch (SQLException se) {
      if (se.getErrorCode() != 42102) { // Don't log exception "Table "FILES" not found" which will be corrected in following step
        LOGGER.error(null, se);
      }
    } finally {
      close(rs);
      close(stmt);
      close(conn);
    }

    // Recreate database if it is not the latest version.
    boolean force_reinit = !latestVersion.equals(version);
    if (force || dbCount == -1 || force_reinit) {
      LOGGER.debug("Database will be (re)initialized");
      try {
        conn = getConnection();
        executeUpdate(conn, "DROP TABLE FILES");
        executeUpdate(conn, "DROP TABLE METADATA");
        executeUpdate(conn, "DROP TABLE REGEXP_RULES");
        executeUpdate(conn, "DROP TABLE AUDIOTRACKS");
        executeUpdate(conn, "DROP TABLE SUBTRACKS");
      } catch (SQLException se) {
        if (se.getErrorCode() != 42102) { // Don't log exception "Table "FILES" not found" which will be corrected in following step
          LOGGER.error(null, se);
        }
      }
      try {
        StringBuilder sb = new StringBuilder();
        sb.append("CREATE TABLE FILES (");
        sb.append("  ID                      INT AUTO_INCREMENT");
        sb.append(", FILENAME                VARCHAR2(1024)   NOT NULL");
        sb.append(", MODIFIED                TIMESTAMP        NOT NULL");
        sb.append(", TYPE                    INT");
        sb.append(", DURATION                DOUBLE");
        sb.append(", BITRATE                 INT");
        sb.append(", WIDTH                   INT");
        sb.append(", HEIGHT                  INT");
        sb.append(", SIZE                    NUMERIC");
        sb.append(", CODECV                  VARCHAR2(").append(SIZE_CODECV).append(")");
        sb.append(", FRAMERATE               VARCHAR2(").append(SIZE_FRAMERATE).append(")");
        sb.append(", ASPECT                  VARCHAR2(").append(SIZE_ASPECTRATIO_DVDISO).append(")");
        sb.append(", ASPECTRATIOCONTAINER    VARCHAR2(").append(SIZE_ASPECTRATIO_CONTAINER).append(")");
        sb.append(", ASPECTRATIOVIDEOTRACK   VARCHAR2(").append(SIZE_ASPECTRATIO_VIDEOTRACK).append(")");
        sb.append(", REFRAMES                TINYINT");
        sb.append(", AVCLEVEL                VARCHAR2(").append(SIZE_AVC_LEVEL).append(")");
        sb.append(", BITSPERPIXEL            INT");
        sb.append(", THUMB                   BINARY");
        sb.append(", CONTAINER               VARCHAR2(").append(SIZE_CONTAINER).append(")");
        sb.append(", MODEL                   VARCHAR2(").append(SIZE_MODEL).append(")");
        sb.append(", EXPOSURE                INT");
        sb.append(", ORIENTATION             INT");
        sb.append(", ISO                     INT");
        sb.append(", MUXINGMODE              VARCHAR2(").append(SIZE_MUXINGMODE).append(")");
        sb.append(", FRAMERATEMODE           VARCHAR2(").append(SIZE_FRAMERATE_MODE).append(")");
        sb.append(", STEREOSCOPY             VARCHAR2(").append(SIZE_STEREOSCOPY).append(")");
        sb.append(", MATRIXCOEFFICIENTS      VARCHAR2(").append(SIZE_MATRIX_COEFFICIENTS).append(")");
        sb.append(", EMBEDDEDFONTEXISTS      BIT              NOT NULL");
        sb.append(", constraint PK1 primary key (FILENAME, MODIFIED, ID))");
        executeUpdate(conn, sb.toString());
        sb = new StringBuilder();
        sb.append("CREATE TABLE AUDIOTRACKS (");
        sb.append("  FILEID            INT              NOT NULL");
        sb.append(", ID                INT              NOT NULL");
        sb.append(", LANG              VARCHAR2(").append(SIZE_LANG).append(")");
        sb.append(", FLAVOR            VARCHAR2(").append(SIZE_FLAVOR).append(")");
        sb.append(", NRAUDIOCHANNELS   NUMERIC");
        sb.append(", SAMPLEFREQ        VARCHAR2(").append(SIZE_SAMPLEFREQ).append(")");
        sb.append(", CODECA            VARCHAR2(").append(SIZE_CODECA).append(")");
        sb.append(", BITSPERSAMPLE     INT");
        sb.append(", ALBUM             VARCHAR2(").append(SIZE_ALBUM).append(")");
        sb.append(", ARTIST            VARCHAR2(").append(SIZE_ARTIST).append(")");
        sb.append(", SONGNAME          VARCHAR2(").append(SIZE_SONGNAME).append(")");
        sb.append(", GENRE             VARCHAR2(").append(SIZE_GENRE).append(")");
        sb.append(", YEAR              INT");
        sb.append(", TRACK             INT");
        sb.append(", DELAY             INT");
        sb.append(", MUXINGMODE        VARCHAR2(").append(SIZE_MUXINGMODE).append(")");
        sb.append(", BITRATE           INT");
        sb.append(", constraint PKAUDIO primary key (FILEID, ID))");
        executeUpdate(conn, sb.toString());
        sb = new StringBuilder();
        sb.append("CREATE TABLE SUBTRACKS (");
        sb.append("  FILEID   INT              NOT NULL");
        sb.append(", ID       INT              NOT NULL");
        sb.append(", LANG     VARCHAR2(").append(SIZE_LANG).append(")");
        sb.append(", FLAVOR   VARCHAR2(").append(SIZE_FLAVOR).append(")");
        sb.append(", TYPE     INT");
        sb.append(", constraint PKSUB primary key (FILEID, ID))");

        executeUpdate(conn, sb.toString());
        executeUpdate(conn, "CREATE TABLE METADATA (KEY VARCHAR2(255) NOT NULL, VALUE VARCHAR2(255) NOT NULL)");
        executeUpdate(conn, "INSERT INTO METADATA VALUES ('VERSION', '" + latestVersion + "')");
        executeUpdate(conn, "CREATE INDEX IDXARTIST on AUDIOTRACKS (ARTIST asc);");
        executeUpdate(conn, "CREATE INDEX IDXALBUM on AUDIOTRACKS (ALBUM asc);");
        executeUpdate(conn, "CREATE INDEX IDXGENRE on AUDIOTRACKS (GENRE asc);");
        executeUpdate(conn, "CREATE INDEX IDXYEAR on AUDIOTRACKS (YEAR asc);");
        executeUpdate(conn, "CREATE TABLE REGEXP_RULES ( ID VARCHAR2(255) PRIMARY KEY, RULE VARCHAR2(255), ORDR NUMERIC);");
        executeUpdate(conn, "INSERT INTO REGEXP_RULES VALUES ( '###', '(?i)^\\W.+', 0 );");
        executeUpdate(conn, "INSERT INTO REGEXP_RULES VALUES ( '0-9', '(?i)^\\d.+', 1 );");

        // Retrieve the alphabet property value and split it
        String[] chars = Messages.getString("DLNAMediaDatabase.1").split(",");

        for (int i = 0; i < chars.length; i++) {
          // Create regexp rules for characters with a sort order based on the property value
          executeUpdate(conn, "INSERT INTO REGEXP_RULES VALUES ( '" + chars[i] + "', '(?i)^" + chars[i] + ".+', " + (i + 2) + " );");
        }

        LOGGER.debug("Database initialized");
      } catch (SQLException se) {
        LOGGER.info("Error in table creation: " + se.getMessage());
      } finally {
        close(conn);
      }
    } else {
      LOGGER.debug("Database file count: " + dbCount);
      LOGGER.debug("Database version: " + latestVersion);
    }
  }

  private void executeUpdate(Connection conn, String sql) throws SQLException {
    if (conn != null) {
      try (Statement stmt = conn.createStatement()) {
        stmt.executeUpdate(sql);
      }
    }
  }

  public boolean isDataExists(String name, long modified) {
    boolean found = false;
    Connection conn = null;
    ResultSet rs = null;
    PreparedStatement stmt = null;
    try {
      conn = getConnection();
      stmt = conn.prepareStatement("SELECT * FROM FILES WHERE FILENAME = ? AND MODIFIED = ?");
      stmt.setString(1, name);
      stmt.setTimestamp(2, new Timestamp(modified));
      rs = stmt.executeQuery();
      while (rs.next()) {
        found = true;
      }
    } catch (SQLException se) {
      LOGGER.error(null, se);
      return false;
    } finally {
      close(rs);
      close(stmt);
      close(conn);
    }
    return found;
  }

  public ArrayList<DLNAMediaInfo> getData(String name, long modified) {
    ArrayList<DLNAMediaInfo> list = new ArrayList<>();
    Connection conn = null;
    ResultSet rs = null;
    PreparedStatement stmt = null;
    try {
      conn = getConnection();
      stmt = conn.prepareStatement("SELECT * FROM FILES WHERE FILENAME = ? AND MODIFIED = ?");
      stmt.setString(1, name);
      stmt.setTimestamp(2, new Timestamp(modified));
      rs = stmt.executeQuery();
      while (rs.next()) {
        DLNAMediaInfo media = new DLNAMediaInfo();
        int id = rs.getInt("ID");
        media.setDuration(toDouble(rs, "DURATION"));
        media.setBitrate(rs.getInt("BITRATE"));
        media.setWidth(rs.getInt("WIDTH"));
        media.setHeight(rs.getInt("HEIGHT"));
        media.setSize(rs.getLong("SIZE"));
        media.setCodecV(rs.getString("CODECV"));
        media.setFrameRate(rs.getString("FRAMERATE"));
        media.setAspectRatioDvdIso(rs.getString("ASPECT"));
        media.setAspectRatioContainer(rs.getString("ASPECTRATIOCONTAINER"));
        media.setAspectRatioVideoTrack(rs.getString("ASPECTRATIOVIDEOTRACK"));
        media.setReferenceFrameCount(rs.getByte("REFRAMES"));
        media.setAvcLevel(rs.getString("AVCLEVEL"));
        media.setBitsPerPixel(rs.getInt("BITSPERPIXEL"));
        media.setThumb(rs.getBytes("THUMB"));
        media.setContainer(rs.getString("CONTAINER"));
        media.setModel(rs.getString("MODEL"));
        if (media.getModel() != null && !FormatConfiguration.JPG.equals(media.getContainer())) {
          media.setExtrasAsString(media.getModel());
        }
        media.setExposure(rs.getInt("EXPOSURE"));
        media.setOrientation(rs.getInt("ORIENTATION"));
        media.setIso(rs.getInt("ISO"));
        media.setMuxingMode(rs.getString("MUXINGMODE"));
        media.setFrameRateMode(rs.getString("FRAMERATEMODE"));
        media.setStereoscopy(rs.getString("STEREOSCOPY"));
        media.setMatrixCoefficients(rs.getString("MATRIXCOEFFICIENTS"));
        media.setEmbeddedFontExists(rs.getBoolean("EMBEDDEDFONTEXISTS"));
        media.setMediaparsed(true);
        ResultSet subrs;
        try (PreparedStatement audios = conn.prepareStatement("SELECT * FROM AUDIOTRACKS WHERE FILEID = ?")) {
          audios.setInt(1, id);
          subrs = audios.executeQuery();
          while (subrs.next()) {
            DLNAMediaAudio audio = new DLNAMediaAudio();
            audio.setId(subrs.getInt("ID"));
            audio.setLang(subrs.getString("LANG"));
            audio.setFlavor(subrs.getString("FLAVOR"));
            audio.getAudioProperties().setNumberOfChannels(subrs.getInt("NRAUDIOCHANNELS"));
            audio.setSampleFrequency(subrs.getString("SAMPLEFREQ"));
            audio.setCodecA(subrs.getString("CODECA"));
            audio.setBitsperSample(subrs.getInt("BITSPERSAMPLE"));
            audio.setAlbum(subrs.getString("ALBUM"));
            audio.setArtist(subrs.getString("ARTIST"));
            audio.setSongname(subrs.getString("SONGNAME"));
            audio.setGenre(subrs.getString("GENRE"));
            audio.setYear(subrs.getInt("YEAR"));
            audio.setTrack(subrs.getInt("TRACK"));
            audio.getAudioProperties().setAudioDelay(subrs.getInt("DELAY"));
            audio.setMuxingModeAudio(subrs.getString("MUXINGMODE"));
            audio.setBitRate(subrs.getInt("BITRATE"));
            media.getAudioTracksList().add(audio);
          }
          subrs.close();
        }
        try (PreparedStatement subs = conn.prepareStatement("SELECT * FROM SUBTRACKS WHERE FILEID = ?")) {
          subs.setInt(1, id);
          subrs = subs.executeQuery();
          while (subrs.next()) {
            DLNAMediaSubtitle sub = new DLNAMediaSubtitle();
            sub.setId(subrs.getInt("ID"));
            sub.setLang(subrs.getString("LANG"));
            sub.setFlavor(subrs.getString("FLAVOR"));
            sub.setType(SubtitleType.valueOfStableIndex(subrs.getInt("TYPE")));
            media.getSubtitleTracksList().add(sub);
          }
          subrs.close();
        }

        list.add(media);
      }
    } catch (SQLException se) {
      LOGGER.error(null, se);
      return null;
    } finally {
      close(rs);
      close(stmt);
      close(conn);
    }
    return list;
  }

  private Double toDouble(ResultSet rs, String column) throws SQLException {
    Object obj = rs.getObject(column);
    if (obj instanceof Double) {
      return (Double) obj;
    }
    return null;
  }

  public synchronized void insertData(String name, long modified, int type, DLNAMediaInfo media) {
    Connection conn = null;
    PreparedStatement ps = null;
    try {
      conn = getConnection();
      ps = conn.prepareStatement("INSERT INTO FILES(FILENAME, MODIFIED, TYPE, DURATION, BITRATE, WIDTH, HEIGHT, SIZE, CODECV, FRAMERATE, ASPECT, ASPECTRATIOCONTAINER, ASPECTRATIOVIDEOTRACK, REFRAMES, AVCLEVEL, BITSPERPIXEL, THUMB, CONTAINER, MODEL, EXPOSURE, ORIENTATION, ISO, MUXINGMODE, FRAMERATEMODE, STEREOSCOPY, MATRIXCOEFFICIENTS, EMBEDDEDFONTEXISTS) VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?)");
      ps.setString(1, name);
      ps.setTimestamp(2, new Timestamp(modified));
      ps.setInt(3, type);
      if (media != null) {
        if (media.getDuration() != null) {
          ps.setDouble(4, media.getDurationInSeconds());
        } else {
          ps.setNull(4, Types.DOUBLE);
        }

        int databaseBitrate = 0;
        if (type != Format.IMAGE) {
          databaseBitrate = media.getBitrate();
          if (databaseBitrate == 0) {
            LOGGER.debug("Could not parse the bitrate from: " + name);
          }
        }
        ps.setInt(5, databaseBitrate);

        ps.setInt(6, media.getWidth());
        ps.setInt(7, media.getHeight());
        ps.setLong(8, media.getSize());
        ps.setString(9, left(media.getCodecV(), SIZE_CODECV));
        ps.setString(10, left(media.getFrameRate(), SIZE_FRAMERATE));
        ps.setString(11, left(media.getAspectRatioDvdIso(), SIZE_ASPECTRATIO_DVDISO));
        ps.setString(12, left(media.getAspectRatioContainer(), SIZE_ASPECTRATIO_CONTAINER));
        ps.setString(13, left(media.getAspectRatioVideoTrack(), SIZE_ASPECTRATIO_VIDEOTRACK));
        ps.setByte(14, media.getReferenceFrameCount());
        ps.setString(15, left(media.getAvcLevel(), SIZE_AVC_LEVEL));
        ps.setInt(16, media.getBitsPerPixel());
        ps.setBytes(17, media.getThumb());
        ps.setString(18, left(media.getContainer(), SIZE_CONTAINER));
        if (media.getExtras() != null) {
          ps.setString(19, left(media.getExtrasAsString(), SIZE_MODEL));
        } else {
          ps.setString(19, left(media.getModel(), SIZE_MODEL));
        }
        ps.setInt(20, media.getExposure());
        ps.setInt(21, media.getOrientation());
        ps.setInt(22, media.getIso());
        ps.setString(23, left(media.getMuxingModeAudio(), SIZE_MUXINGMODE));
        ps.setString(24, left(media.getFrameRateMode(), SIZE_FRAMERATE_MODE));
        ps.setString(25, left(media.getStereoscopy(), SIZE_STEREOSCOPY));
        ps.setString(26, left(media.getMatrixCoefficients(), SIZE_MATRIX_COEFFICIENTS));
        ps.setBoolean(27, media.isEmbeddedFontExists());
      } else {
        ps.setString(4, null);
        ps.setInt(5, 0);
        ps.setInt(6, 0);
        ps.setInt(7, 0);
        ps.setLong(8, 0);
        ps.setString(9, null);
        ps.setString(10, null);
        ps.setString(11, null);
        ps.setString(12, null);
        ps.setString(13, null);
        ps.setByte(14, (byte) -1);
        ps.setString(15, null);
        ps.setInt(16, 0);
        ps.setBytes(17, null);
        ps.setString(18, null);
        ps.setString(19, null);
        ps.setInt(20, 0);
        ps.setInt(21, 0);
        ps.setInt(22, 0);
        ps.setString(23, null);
        ps.setString(24, null);
        ps.setString(25, null);
        ps.setString(26, null);
        ps.setBoolean(27, false);
      }
      ps.executeUpdate();
      int id;
      try (ResultSet rs = ps.getGeneratedKeys()) {
        id = -1;
        while (rs.next()) {
          id = rs.getInt(1);
        }
      }
      if (media != null && id > -1) {
        PreparedStatement insert = null;
        if (media.getAudioTracksList().size() > 0) {
          insert = conn.prepareStatement("INSERT INTO AUDIOTRACKS VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?)");
          for (DLNAMediaAudio audio : media.getAudioTracksList()) {
            insert.clearParameters();
            insert.setInt(1, id);
            insert.setInt(2, audio.getId());
            insert.setString(3, left(audio.getLang(), SIZE_LANG));
            insert.setString(4, left(audio.getFlavor(), SIZE_FLAVOR));
            insert.setInt(5, audio.getAudioProperties().getNumberOfChannels());
            insert.setString(6, left(audio.getSampleFrequency(), SIZE_SAMPLEFREQ));
            insert.setString(7, left(audio.getCodecA(), SIZE_CODECA));
            insert.setInt(8, audio.getBitsperSample());
            insert.setString(9, left(trimToEmpty(audio.getAlbum()), SIZE_ALBUM));
            insert.setString(10, left(trimToEmpty(audio.getArtist()), SIZE_ARTIST));
            insert.setString(11, left(trimToEmpty(audio.getSongname()), SIZE_SONGNAME));
            insert.setString(12, left(trimToEmpty(audio.getGenre()), SIZE_GENRE));
            insert.setInt(13, audio.getYear());
            insert.setInt(14, audio.getTrack());
            insert.setInt(15, audio.getAudioProperties().getAudioDelay());
            insert.setString(16, left(trimToEmpty(audio.getMuxingModeAudio()), SIZE_MUXINGMODE));
            insert.setInt(17, audio.getBitRate());

            try {
              insert.executeUpdate();
            } catch (SQLException e) {
              if (e.getErrorCode() == 23505) {
                LOGGER.debug("A duplicate key error occurred while trying to store the following file's audio information in the database: " + name);
              } else {
                LOGGER.debug("An error occurred while trying to store the following file's audio information in the database: " + name);
              }
              LOGGER.debug("The error given by jdbc was: " + e);
            }
          }
        }

        if (media.getSubtitleTracksList().size() > 0) {
          insert = conn.prepareStatement("INSERT INTO SUBTRACKS VALUES (?, ?, ?, ?, ?)");
          for (DLNAMediaSubtitle sub : media.getSubtitleTracksList()) {
            if (sub.getExternalFile() == null) { // no save of external subtitles
              insert.clearParameters();
              insert.setInt(1, id);
              insert.setInt(2, sub.getId());
              insert.setString(3, left(sub.getLang(), SIZE_LANG));
              insert.setString(4, left(sub.getFlavor(), SIZE_FLAVOR));
              insert.setInt(5, sub.getType().getStableIndex());
              try {
                insert.executeUpdate();
              } catch (SQLException e) {
                if (e.getErrorCode() == 23505) {
                  LOGGER.debug("A duplicate key error occurred while trying to store the following file's subtitle information in the database: " + name);
                } else {
                  LOGGER.debug("An error occurred while trying to store the following file's subtitle information in the database: " + name);
                }
                LOGGER.debug("The error given by jdbc was: " + e);
              }
            }
          }
        }

        close(insert);
      }
    } catch (SQLException se) {
      if (se.getErrorCode() == 23505) {
        LOGGER.debug("Duplicate key while inserting this entry: " + name + " into the database: " + se.getMessage());
      } else {
        LOGGER.error(null, se);
      }
    } finally {
      close(ps);
      close(conn);
    }
  }

  public synchronized void updateThumbnail(String name, long modified, int type, DLNAMediaInfo media) {
    Connection conn = null;
    PreparedStatement ps = null;
    try {
      conn = getConnection();
      ps = conn.prepareStatement("UPDATE FILES SET THUMB = ? WHERE FILENAME = ? AND MODIFIED = ?");
      ps.setString(2, name);
      ps.setTimestamp(3, new Timestamp(modified));
      if (media != null) {
        ps.setBytes(1, media.getThumb());
      } else {
        ps.setNull(1, Types.BINARY);
      }
      ps.executeUpdate();
    } catch (SQLException se) {
      if (se.getErrorCode() == 23001) {
        LOGGER.debug("Duplicate key while inserting this entry: " + name + " into the database: " + se.getMessage());
      } else {
        LOGGER.error(null, se);
      }
    } finally {
      close(ps);
      close(conn);
    }
  }

  public ArrayList<String> getStrings(String sql) {
    ArrayList<String> list = new ArrayList<>();
    Connection conn = null;
    ResultSet rs = null;
    PreparedStatement ps = null;
    try {
      conn = getConnection();
      ps = conn.prepareStatement(sql);
      rs = ps.executeQuery();
      while (rs.next()) {
        String str = rs.getString(1);
        if (isBlank(str)) {
          if (!list.contains(NONAME)) {
            list.add(NONAME);
          }
        } else if (!list.contains(str)) {
          list.add(str);
        }
      }
    } catch (SQLException se) {
      LOGGER.error(null, se);
      return null;
    } finally {
      close(rs);
      close(ps);
      close(conn);
    }
    return list;
  }

  public void cleanup() {
    Connection conn = null;
    PreparedStatement ps = null;
    ResultSet rs = null;

    try {
      conn = getConnection();
      ps = conn.prepareStatement("SELECT COUNT(*) FROM FILES");
      rs = ps.executeQuery();
      dbCount = 0;

      if (rs.next()) {
        dbCount = rs.getInt(1);
      }

      rs.close();
      ps.close();
      PMS.get().getFrame().setStatusLine(Messages.getString("DLNAMediaDatabase.2") + " 0%");
      int i = 0;
      int oldpercent = 0;

      if (dbCount > 0) {
        ps = conn.prepareStatement("SELECT FILENAME, MODIFIED, ID FROM FILES", ResultSet.TYPE_FORWARD_ONLY, ResultSet.CONCUR_UPDATABLE);
        rs = ps.executeQuery();
        while (rs.next()) {
          String filename = rs.getString("FILENAME");
          long modified = rs.getTimestamp("MODIFIED").getTime();
          File file = new File(filename);
          if (!file.exists() || file.lastModified() != modified) {
            rs.deleteRow();
          }
          i++;
          int newpercent = i * 100 / dbCount;
          if (newpercent > oldpercent) {
            PMS.get().getFrame().setStatusLine(Messages.getString("DLNAMediaDatabase.2") + newpercent + "%");
            oldpercent = newpercent;
          }
        }
      }
    } catch (SQLException se) {
      LOGGER.error(null, se);
    } finally {
      close(rs);
      close(ps);
      close(conn);
    }
  }

  public ArrayList<File> getFiles(String sql) {
    ArrayList<File> list = new ArrayList<>();
    Connection conn = null;
    ResultSet rs = null;
    PreparedStatement ps = null;
    try {
      conn = getConnection();
      ps = conn.prepareStatement(sql.toLowerCase().startsWith("select") ? sql : ("SELECT FILENAME, MODIFIED FROM FILES WHERE " + sql));
      rs = ps.executeQuery();
      while (rs.next()) {
        String filename = rs.getString("FILENAME");
        long modified = rs.getTimestamp("MODIFIED").getTime();
        File file = new File(filename);
        if (file.exists() && file.lastModified() == modified) {
          list.add(file);
        }
      }
    } catch (SQLException se) {
      LOGGER.error(null, se);
      return null;
    } finally {
      close(rs);
      close(ps);
      close(conn);
    }
    return list;
  }

  private void close(ResultSet rs) {
    try {
      if (rs != null) {
        rs.close();
      }
    } catch (SQLException e) {
      LOGGER.error("error during closing:" + e.getMessage(), e);
    }
  }

  private void close(Statement ps) {
    try {
      if (ps != null) {
        ps.close();
      }
    } catch (SQLException e) {
      LOGGER.error("error during closing:" + e.getMessage(), e);
    }
  }

  private void close(Connection conn) {
    try {
      if (conn != null) {
        conn.close();
      }
    } catch (SQLException e) {
      LOGGER.error("error during closing:" + e.getMessage(), e);
    }
  }

  public boolean isScanLibraryRunning() {
    return scanner != null && scanner.isAlive();
  }

  public void scanLibrary() {
    if (isScanLibraryRunning()) {
      LOGGER.info(Messages.getString("NetworkTab.70"));
    } else {
      scanner = new Thread(this, "Library Scanner");
      scanner.start();
    }
  }

  public void stopScanLibrary() {
    if (isScanLibraryRunning()) {
      PMS.get().getRootFolder(null).stopScan();
    }
  }

  @Override
  public void run() {
    PMS.get().getRootFolder(null).scan();
  }

  public void compact() {
    LOGGER.info("Compacting database...");
    PMS.get().getFrame().setStatusLine(Messages.getString("DLNAMediaDatabase.3"));
    String filename = "database/backup.sql";
    try {
      Script.execute(url, "sa", "", filename);
      DeleteDbFiles.execute(dbDir, dbName, true);
      RunScript.execute(url, "sa", "", filename, null, false);
    } catch (SQLException se) {
      LOGGER.error("Error in compacting database: ", se);
    } finally {
      File testsql = new File(filename);
      if (testsql.exists() && !testsql.delete()) {
        testsql.deleteOnExit();
      }
    }
    PMS.get().getFrame().setStatusLine(null);
  }
}
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