Package org.h2.store

Class RangeReader

  • All Implemented Interfaces:
    java.io.Closeable, java.lang.AutoCloseable, java.lang.Readable
    public final class RangeReader
extends java.io.Reader
    Reader that reads only a specified range from the source reader.

    • Field Summary

      Fields 
      Modifier and Type Field Description
      private long limit  
      private java.io.Reader r  

      • Fields inherited from class java.io.Reader

        lock

    • Constructor Summary

      Constructors 
      Constructor Description
      RangeReader​(java.io.Reader r, long offset, long limit)
      Creates new instance of range reader.

    • Method Summary

      All Methods Instance Methods Concrete Methods 
      Modifier and Type Method Description
      void close()  
      void mark​(int readAheadLimit)  
      boolean markSupported()  
      int read()  
      int read​(char[] cbuf, int off, int len)  
      boolean ready()  
      void reset()  
      long skip​(long n)  

      • Methods inherited from class java.io.Reader

        nullReader, read, read, transferTo

      • Methods inherited from class java.lang.Object

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

    • Field Detail

      • r

        private final java.io.Reader r

      • limit

        private long limit

    • Constructor Detail

      • RangeReader

        public RangeReader​(java.io.Reader r,
                   long offset,
                   long limit)
            throws java.io.IOException
        Creates new instance of range reader.
        Parameters:
        r - source reader
        offset - offset of the range
        limit - length of the range
        Throws:
        java.io.IOException - on I/O exception during seeking to the specified offset

    • Method Detail

      • read

        public int read()
         throws java.io.IOException
        Overrides:
        read in class java.io.Reader
        Throws:
        java.io.IOException

      • read

        public int read​(char[] cbuf,
                int off,
                int len)
         throws java.io.IOException
        Specified by:
        read in class java.io.Reader
        Throws:
        java.io.IOException

      • skip

        public long skip​(long n)
          throws java.io.IOException
        Overrides:
        skip in class java.io.Reader
        Throws:
        java.io.IOException

      • ready

        public boolean ready()
              throws java.io.IOException
        Overrides:
        ready in class java.io.Reader
        Throws:
        java.io.IOException

      • markSupported

        public boolean markSupported()
        Overrides:
        markSupported in class java.io.Reader

      • mark

        public void mark​(int readAheadLimit)
          throws java.io.IOException
        Overrides:
        mark in class java.io.Reader
        Throws:
        java.io.IOException

      • reset

        public void reset()
           throws java.io.IOException
        Overrides:
        reset in class java.io.Reader
        Throws:
        java.io.IOException

      • close

        public void close()
           throws java.io.IOException
        Specified by:
        close in interface java.lang.AutoCloseable
        Specified by:
        close in interface java.io.Closeable
        Specified by:
        close in class java.io.Reader
        Throws:
        java.io.IOException