RecordReadChannel (Google App Engine API for Java)

com.google.appengine.api.files

Interface RecordReadChannel

• ---

  Deprecated.
  
  

  @Deprecated
  public interface RecordReadChannel

  A channel for reading records from a FileReadChannel.

  The format of these records is defined by the leveldb log format: http://leveldb.googlecode.com/svn/trunk/doc/log_format.txt

  An instance of RecordReadChannel may be obtained from the method: FileService.openRecordReadChannel(AppEngineFile, boolean).

• • Method Summary

    All Methods Instance Methods Abstract Methods Deprecated Methods 

    Modifier and Type	Method and Description
    long	position() Deprecated.  Returns the position in the underlying FileReadChannel.
    void	position(long newPosition) Deprecated.  Sets the read position of the underlying FileReadChannel.
    java.nio.ByteBuffer	readRecord() Deprecated.  Reads a record from the file and returns it in a ByteBuffer.

• • Method Detail

    • readRecord

      java.nio.ByteBuffer readRecord()
                              throws java.io.IOException

      Deprecated. 
      Reads a record from the file and returns it in a ByteBuffer. This ByteBuffer is reused, so if the user would like to save the result of readRecord(), they need to copy the output of this method.

      Returns:

      a ByteBuffer containing the record.

      Throws:

      java.io.IOException

    • position

      long position()
             throws java.io.IOException

      Deprecated. 
      Returns the position in the underlying FileReadChannel.

      Returns:

      the position.

      Throws:

      java.io.IOException

    • position

      void position(long newPosition)
             throws java.io.IOException

      Deprecated. 
      Sets the read position of the underlying FileReadChannel. The position value should only be set using the value obtained from a previous position() call.

      Parameters:

      newPosition - the position at which to set the reader.

      Throws:

      java.io.IOException