Package org.h2.store.fs.zip

Class FileZip

  • 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 FileZip
extends FileBase
    The file is read from a stream. When reading from start to end, the same input stream is re-used, however when reading from end to start, a new input stream is opened for each request.

    • 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 java.util.zip.ZipEntry entry  
      private java.util.zip.ZipFile file  
      private java.io.InputStream in  
      private long inPos  
      private long length  
      private long pos  
      private static byte[] SKIP_BUFFER  
      private boolean skipUsingRead  

    • Constructor Summary

      Constructors 
      Constructor Description
      FileZip​(java.util.zip.ZipFile file, java.util.zip.ZipEntry entry)  

    • Method Summary

      All Methods Instance Methods Concrete Methods 
      Modifier and Type Method Description
      void force​(boolean metaData)  
      protected void implCloseChannel()  
      long position()  
      java.nio.channels.FileChannel position​(long newPos)  
      int read​(java.nio.ByteBuffer dst)  
      private void seek()  
      long size()  
      java.nio.channels.FileChannel truncate​(long newLength)  
      java.nio.channels.FileLock tryLock​(long position, long size, boolean shared)  
      int write​(java.nio.ByteBuffer src)  

      • 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, toString, wait, wait, wait

      • Methods inherited from interface java.nio.channels.Channel

        isOpen

    • Field Detail

      • SKIP_BUFFER

        private static final byte[] SKIP_BUFFER

      • file

        private final java.util.zip.ZipFile file

      • entry

        private final java.util.zip.ZipEntry entry

      • pos

        private long pos

      • in

        private java.io.InputStream in

      • inPos

        private long inPos

      • length

        private final long length

      • skipUsingRead

        private boolean skipUsingRead

    • Constructor Detail

      • FileZip

        FileZip​(java.util.zip.ZipFile file,
        java.util.zip.ZipEntry entry)

    • Method Detail

      • position

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

      • size

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

      • read

        public int read​(java.nio.ByteBuffer dst)
         throws java.io.IOException
        Specified by:
        read in interface java.nio.channels.ReadableByteChannel
        Specified by:
        read in interface java.nio.channels.SeekableByteChannel
        Specified by:
        read in class java.nio.channels.FileChannel
        Throws:
        java.io.IOException

      • seek

        private void seek()
           throws java.io.IOException
        Throws:
        java.io.IOException

      • position

        public java.nio.channels.FileChannel position​(long newPos)
        Specified by:
        position in interface java.nio.channels.SeekableByteChannel
        Specified by:
        position in class java.nio.channels.FileChannel

      • truncate

        public java.nio.channels.FileChannel truncate​(long newLength)
                                       throws java.io.IOException
        Specified by:
        truncate in interface java.nio.channels.SeekableByteChannel
        Specified by:
        truncate in class java.nio.channels.FileChannel
        Throws:
        java.io.IOException

      • force

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

      • write

        public int write​(java.nio.ByteBuffer src)
          throws java.io.IOException
        Specified by:
        write in interface java.nio.channels.SeekableByteChannel
        Specified by:
        write in interface java.nio.channels.WritableByteChannel
        Specified by:
        write in class java.nio.channels.FileChannel
        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

      • implCloseChannel

        protected void implCloseChannel()
                         throws java.io.IOException
        Overrides:
        implCloseChannel in class FileBase
        Throws:
        java.io.IOException