protected void doListFileNames(
      StoreLocation location,
      java.io.File dir,
      FileStoreFilter filter,
      boolean recurse,
      boolean exitBranchOnFirstMatch,
      java.util.Collection<String> names) {
    java.util.ArrayList<java.io.File> subDirs = new java.util.ArrayList<java.io.File>();

    // Search the children of the specified directory. If the child is a directory, append it to the
    // list of sub
    // directories to search later. Otherwise, try to list the file as a match. If the file is a
    // match and
    // exitBranchOnFirstMatch is true, then exit this branch without considering any other files.
    // This has the
    // effect of choosing files closest to the search root.
    for (java.io.File childFile : dir.listFiles()) {
      if (childFile == null) continue;

      if (childFile.isDirectory()) {
        subDirs.add(childFile);
      } else {
        if (this.listFile(location, childFile, filter, names) && exitBranchOnFirstMatch) return;
      }
    }

    if (!recurse) return;

    // Recursively search each sub-directory. If exitBranchOnFirstMatch is true, then we did not
    // find a match under
    // this directory.
    for (java.io.File childDir : subDirs) {
      this.doListFileNames(location, childDir, filter, recurse, exitBranchOnFirstMatch, names);
    }
  }
  @SuppressWarnings({"ResultOfMethodCallIgnored"})
  protected void buildWritePaths(org.w3c.dom.Node dataFileCacheNode) {
    javax.xml.xpath.XPathFactory pathFactory = javax.xml.xpath.XPathFactory.newInstance();
    javax.xml.xpath.XPath pathFinder = pathFactory.newXPath();

    try {
      org.w3c.dom.NodeList locationNodes =
          (org.w3c.dom.NodeList)
              pathFinder.evaluate(
                  "/dataFileStore/writeLocations/location",
                  dataFileCacheNode.getFirstChild(),
                  javax.xml.xpath.XPathConstants.NODESET);
      for (int i = 0; i < locationNodes.getLength(); i++) {
        org.w3c.dom.Node location = locationNodes.item(i);
        String prop = pathFinder.evaluate("@property", location);
        String wwDir = pathFinder.evaluate("@wwDir", location);
        String append = pathFinder.evaluate("@append", location);
        String create = pathFinder.evaluate("@create", location);

        String path = buildLocationPath(prop, append, wwDir);
        if (path == null) {
          Logging.logger()
              .log(
                  Level.WARNING,
                  "FileStore.LocationInvalid",
                  prop != null ? prop : Logging.getMessage("generic.Unknown"));
          continue;
        }

        Logging.logger().log(Level.FINER, "FileStore.AttemptingWriteDir", path);
        java.io.File pathFile = new java.io.File(path);
        if (!pathFile.exists()
            && create != null
            && (create.contains("t") || create.contains("T"))) {
          Logging.logger().log(Level.FINER, "FileStore.MakingDirsFor", path);
          pathFile.mkdirs();
        }

        if (pathFile.isDirectory() && pathFile.canWrite() && pathFile.canRead()) {
          Logging.logger().log(Level.FINER, "FileStore.WriteLocationSuccessful", path);
          this.writeLocation = new StoreLocation(pathFile);

          // Remove the writable location from search path if it already exists.
          StoreLocation oldLocation = this.storeLocationFor(path);
          if (oldLocation != null) this.readLocations.remove(oldLocation);

          // Writable location is always first in search path.
          this.readLocations.add(0, this.writeLocation);

          break; // only need one
        }
      }
    } catch (javax.xml.xpath.XPathExpressionException e) {
      String message = Logging.getMessage("FileStore.ExceptionReadingConfigurationFile");
      Logging.logger().severe(message);
      throw new IllegalStateException(message, e);
    }
  }
  @SuppressWarnings({"ResultOfMethodCallIgnored"})
  protected static void markFileUsed(java.io.File file) {
    if (file == null) return;

    long currentTime = System.currentTimeMillis();

    if (file.canWrite()) file.setLastModified(currentTime);

    if (file.isDirectory()) return;

    java.io.File parent = file.getParentFile();
    if (parent != null && parent.canWrite()) parent.setLastModified(currentTime);
  }
  protected void buildReadPaths(org.w3c.dom.Node dataFileStoreNode) {
    javax.xml.xpath.XPathFactory pathFactory = javax.xml.xpath.XPathFactory.newInstance();
    javax.xml.xpath.XPath pathFinder = pathFactory.newXPath();

    try {
      org.w3c.dom.NodeList locationNodes =
          (org.w3c.dom.NodeList)
              pathFinder.evaluate(
                  "/dataFileStore/readLocations/location",
                  dataFileStoreNode.getFirstChild(),
                  javax.xml.xpath.XPathConstants.NODESET);
      for (int i = 0; i < locationNodes.getLength(); i++) {
        org.w3c.dom.Node location = locationNodes.item(i);
        String prop = pathFinder.evaluate("@property", location);
        String wwDir = pathFinder.evaluate("@wwDir", location);
        String append = pathFinder.evaluate("@append", location);
        String isInstall = pathFinder.evaluate("@isInstall", location);
        String isMarkWhenUsed = pathFinder.evaluate("@isMarkWhenUsed", location);

        String path = buildLocationPath(prop, append, wwDir);
        if (path == null) {
          Logging.logger()
              .log(
                  Level.WARNING,
                  "FileStore.LocationInvalid",
                  prop != null ? prop : Logging.getMessage("generic.Unknown"));
          continue;
        }

        StoreLocation oldStore = this.storeLocationFor(path);
        if (oldStore != null) // filter out duplicates
        continue;

        // Even paths that don't exist or are otherwise problematic are added to the list because
        // they may
        // become readable during the session. E.g., removable media. So add them to the search
        // list.

        java.io.File pathFile = new java.io.File(path);
        if (pathFile.exists() && !pathFile.isDirectory()) {
          Logging.logger().log(Level.WARNING, "FileStore.LocationIsFile", pathFile.getPath());
        }

        boolean pathIsInstall =
            isInstall != null && (isInstall.contains("t") || isInstall.contains("T"));
        StoreLocation newStore = new StoreLocation(pathFile, pathIsInstall);

        // If the input parameter "markWhenUsed" is null or empty, then the StoreLocation should
        // keep its
        // default value. Otherwise the store location value is set to true when the input parameter
        // contains
        // "t", and is set to false otherwise.
        if (isMarkWhenUsed != null && isMarkWhenUsed.length() > 0)
          newStore.setMarkWhenUsed(isMarkWhenUsed.toLowerCase().contains("t"));

        this.readLocations.add(newStore);
      }
    } catch (javax.xml.xpath.XPathExpressionException e) {
      String message = Logging.getMessage("FileStore.ExceptionReadingConfigurationFile");
      Logging.logger().severe(message);
      throw new IllegalStateException(message, e);
    }
  }