package com.atlassian.core.spool;
   
   import java.io.File;
   import java.io.IOException;
   
   /**
    * Default file factory for spooling. Creates a new temporary file via File::createTempFile().
    * The file is automatically scheduled for deletion via File::deleteOnExit()
    *
   * @see java.io.File#createTempFile(String, String, File)
   * @see File#deleteOnExit()
   */
  public class DefaultSpoolFileFactory implements FileFactory {
      private static final DefaultSpoolFileFactory INSTANCE = new DefaultSpoolFileFactory();
  
      private String spoolPrefix = "spool-";
      private String spoolSuffix = ".tmp";
      private File spoolDirectory = null;
  
      /**
       * @return a singleton instance of this file factory, using default settings
       */
      public static DefaultSpoolFileFactory getInstance() {
          return INSTANCE;
      }
  
      public void setSpoolPrefix(String spoolPrefix) {
          this.spoolPrefix = spoolPrefix;
      }
  
      public void setSpoolSuffix(String spoolSuffix) {
          this.spoolSuffix = spoolSuffix;
      }
  
      public void setSpoolDirectory(File spoolDirectory) {
          this.spoolDirectory = spoolDirectory;
      }
  
      public File createNewFile() throws IOException {
          File file = File.createTempFile(spoolPrefix, spoolSuffix, spoolDirectory);
          file.deleteOnExit();
          return file;
      }
  }