Class FileMem

  • All Implemented Interfaces:
    java.io.Closeable, java.lang.AutoCloseable, java.nio.channels.ByteChannel, java.nio.channels.Channel, java.nio.channels.GatheringByteChannel, java.nio.channels.InterruptibleChannel, java.nio.channels.ReadableByteChannel, java.nio.channels.ScatteringByteChannel, java.nio.channels.SeekableByteChannel, java.nio.channels.WritableByteChannel

    class FileMem
    extends FileBaseDefault
    This class represents an in-memory file.
    • Nested Class Summary

      • Nested classes/interfaces inherited from class java.nio.channels.FileChannel

        java.nio.channels.FileChannel.MapMode
    • Field Summary

      Fields 
      Modifier and Type Field Description
      private boolean closed  
      (package private) FileMemData data
      The file data.
      private boolean readOnly  
    • Constructor Summary

      Constructors 
      Constructor Description
      FileMem​(FileMemData data, boolean readOnly)  
    • Method Summary

      All Methods Instance Methods Concrete Methods 
      Modifier and Type Method Description
      void force​(boolean metaData)  
      void implCloseChannel()  
      protected void implTruncate​(long newLength)
      The truncate implementation.
      int read​(java.nio.ByteBuffer dst, long position)  
      long size()  
      java.lang.String toString()  
      java.nio.channels.FileLock tryLock​(long position, long size, boolean shared)  
      int write​(java.nio.ByteBuffer src, long position)  
      • Methods inherited from class java.nio.channels.FileChannel

        lock, open, open, read, tryLock, write
      • Methods inherited from class java.nio.channels.spi.AbstractInterruptibleChannel

        begin, close, end, isOpen
      • Methods inherited from class java.lang.Object

        clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait
      • Methods inherited from interface java.nio.channels.Channel

        isOpen
    • Field Detail

      • readOnly

        private final boolean readOnly
      • closed

        private volatile boolean closed
    • Constructor Detail

      • FileMem

        FileMem​(FileMemData data,
                boolean readOnly)
    • Method Detail

      • size

        public long size()
        Specified by:
        size in interface java.nio.channels.SeekableByteChannel
        Specified by:
        size in class java.nio.channels.FileChannel
      • implTruncate

        protected void implTruncate​(long newLength)
                             throws java.io.IOException
        Description copied from class: FileBaseDefault
        The truncate implementation.
        Specified by:
        implTruncate in class FileBaseDefault
        Parameters:
        newLength - the new size
        Throws:
        java.io.IOException - on failure
      • write

        public int write​(java.nio.ByteBuffer src,
                         long position)
                  throws java.io.IOException
        Overrides:
        write in class FileBase
        Throws:
        java.io.IOException
      • read

        public int read​(java.nio.ByteBuffer dst,
                        long position)
                 throws java.io.IOException
        Overrides:
        read in class FileBase
        Throws:
        java.io.IOException
      • implCloseChannel

        public void implCloseChannel()
                              throws java.io.IOException
        Overrides:
        implCloseChannel in class FileBase
        Throws:
        java.io.IOException
      • force

        public void force​(boolean metaData)
                   throws java.io.IOException
        Overrides:
        force in class FileBase
        Throws:
        java.io.IOException
      • tryLock

        public java.nio.channels.FileLock tryLock​(long position,
                                                  long size,
                                                  boolean shared)
                                           throws java.io.IOException
        Overrides:
        tryLock in class FileBase
        Throws:
        java.io.IOException
      • toString

        public java.lang.String toString()
        Overrides:
        toString in class java.lang.Object