Package com.mku.fs.stream

Class HttpFileStream

  • public class HttpFileStream
extends RandomAccessStream
    File stream implementation for remote HTTP files.

    • Constructor Summary

      Constructors 
      Constructor Description
      HttpFileStream​(HttpFile file, java.lang.String mode)
      Construct a file stream from a JavaFile.

    • Method Summary

      All Methods Instance Methods Concrete Methods 
      Modifier and Type Method Description
      boolean canRead()
      Check if stream can read from file.
      boolean canSeek()
      Check if stream can seek.
      boolean canWrite()
      Check if stream can write to file.
      void close()
      Close this stream and associated resources.
      void flush()
      Flush the buffers to the associated file.
      long getLength()
      Get the length of the stream.
      long getPosition()
      Get the current position of the stream.
      int read​(byte[] buffer, int offset, int count)
      Read data from the file stream into the buffer provided.
      void reset()
      Reset the stream.
      long seek​(long offset, RandomAccessStream.SeekOrigin origin)
      Seek to the offset provided.
      void setLength​(long value)
      Set the length of the stream.
      void setMaxNetBytesSkip​(long maxNetBytesSkip)
      Maximum amount of bytes allowed to skip forwards when seeking otherwise will open a new connection
      void setPosition​(long value)
      Set the current position of the stream.
      void write​(byte[] buffer, int offset, int count)
      Write the data from the buffer provided into the stream.

      • Methods inherited from class java.lang.Object

        clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

    • Constructor Detail

      • HttpFileStream

        public HttpFileStream​(HttpFile file,
                      java.lang.String mode)
        Construct a file stream from a JavaFile. This will create a wrapper stream that will route read() and write() to the FileChannel
        Parameters:
        file - The JavaFile that will be used to get the read/write stream
        mode - The mode "r" for read "rw" for write

    • Method Detail

      • setMaxNetBytesSkip

        public void setMaxNetBytesSkip​(long maxNetBytesSkip)
        Maximum amount of bytes allowed to skip forwards when seeking otherwise will open a new connection
        Parameters:
        maxNetBytesSkip - The maximum number of bytes to skip

      • canRead

        public boolean canRead()
        Check if stream can read from file.
        Specified by:
        canRead in class RandomAccessStream
        Returns:
        True if readable

      • canWrite

        public boolean canWrite()
        Check if stream can write to file.
        Specified by:
        canWrite in class RandomAccessStream
        Returns:
        True if writable

      • canSeek

        public boolean canSeek()
        Check if stream can seek.
        Specified by:
        canSeek in class RandomAccessStream
        Returns:
        True if seekable

      • getLength

        public long getLength()
        Get the length of the stream. This is the same as the backed file.
        Specified by:
        getLength in class RandomAccessStream
        Returns:
        The file stream length

      • getPosition

        public long getPosition()
                 throws java.io.IOException
        Get the current position of the stream.
        Specified by:
        getPosition in class RandomAccessStream
        Returns:
        The current position
        Throws:
        java.io.IOException - Thrown if there is an IO error.

      • setPosition

        public void setPosition​(long value)
                 throws java.io.IOException
        Set the current position of the stream.
        Specified by:
        setPosition in class RandomAccessStream
        Parameters:
        value - The new position.
        Throws:
        java.io.IOException - Thrown if there is an IO error.

      • setLength

        public void setLength​(long value)
               throws java.io.IOException
        Set the length of the stream. This is applicable for write streams only.
        Specified by:
        setLength in class RandomAccessStream
        Parameters:
        value - The new length.
        Throws:
        java.io.IOException - Thrown if there is an IO error.

      • read

        public int read​(byte[] buffer,
                int offset,
                int count)
         throws java.io.IOException
        Read data from the file stream into the buffer provided.
        Specified by:
        read in class RandomAccessStream
        Parameters:
        buffer - The buffer to write the data.
        offset - The offset of the buffer to start writing the data.
        count - The maximum number of bytes to read from.
        Returns:
        The bytes read
        Throws:
        java.io.IOException - Thrown if there is an IO error.

      • write

        public void write​(byte[] buffer,
                  int offset,
                  int count)
           throws java.io.IOException
        Write the data from the buffer provided into the stream.
        Specified by:
        write in class RandomAccessStream
        Parameters:
        buffer - The buffer to read the data from.
        offset - The offset of the buffer to start reading the data.
        count - The maximum number of bytes to read from the buffer.
        Throws:
        java.io.IOException - Thrown if there is an IO error.

      • flush

        public void flush()
        Flush the buffers to the associated file.
        Specified by:
        flush in class RandomAccessStream

      • close

        public void close()
           throws java.io.IOException
        Close this stream and associated resources.
        Specified by:
        close in class RandomAccessStream
        Throws:
        java.io.IOException - Thrown if there is an IO error.

      • reset

        public void reset()
           throws java.io.IOException
        Reset the stream.
        Throws:
        java.io.IOException - Thrown if there is an IO error.