org.apache.lucene.store
Class SimpleFSDirectory.SimpleFSIndexInput

java.lang.Object
  extended by org.apache.lucene.store.DataInput
      extended by org.apache.lucene.store.IndexInput
          extended by org.apache.lucene.store.BufferedIndexInput
              extended by org.apache.lucene.store.SimpleFSDirectory.SimpleFSIndexInput
All Implemented Interfaces:
Closeable, Cloneable
Direct Known Subclasses:
NIOFSDirectory.NIOFSIndexInput
Enclosing class:
SimpleFSDirectory

protected static class SimpleFSDirectory.SimpleFSIndexInput
extends BufferedIndexInput


Nested Class Summary
protected static class SimpleFSDirectory.SimpleFSIndexInput.Descriptor
           
 
Field Summary
protected  int chunkSize
           
protected  SimpleFSDirectory.SimpleFSIndexInput.Descriptor file
           
 
Fields inherited from class org.apache.lucene.store.BufferedIndexInput
buffer, BUFFER_SIZE
 
Constructor Summary
SimpleFSDirectory.SimpleFSIndexInput(File path, int bufferSize, int chunkSize)
          Deprecated. please pass resourceDesc
SimpleFSDirectory.SimpleFSIndexInput(String resourceDesc, File path, int bufferSize, int chunkSize)
           
 
Method Summary
 Object clone()
          Returns a clone of this stream.
 void close()
          Closes the stream to further operations.
 void copyBytes(IndexOutput out, long numBytes)
          Copies numBytes bytes to the given IndexOutput.
 long length()
          The number of bytes in the file.
protected  void readInternal(byte[] b, int offset, int len)
          IndexInput methods
protected  void seekInternal(long position)
          Expert: implements seek.
 
Methods inherited from class org.apache.lucene.store.BufferedIndexInput
flushBuffer, getBufferSize, getFilePointer, newBuffer, readByte, readBytes, readBytes, readInt, readLong, readShort, readVInt, readVLong, seek, setBufferSize
 
Methods inherited from class org.apache.lucene.store.IndexInput
skipChars, toString
 
Methods inherited from class org.apache.lucene.store.DataInput
readChars, readString, readStringStringMap, setModifiedUTF8StringsMode
 
Methods inherited from class java.lang.Object
equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait
 

Field Detail

file

protected final SimpleFSDirectory.SimpleFSIndexInput.Descriptor file

chunkSize

protected final int chunkSize
Constructor Detail

SimpleFSDirectory.SimpleFSIndexInput

@Deprecated
public SimpleFSDirectory.SimpleFSIndexInput(File path,
                                                       int bufferSize,
                                                       int chunkSize)
                                     throws IOException
Deprecated. please pass resourceDesc

Throws:
IOException

SimpleFSDirectory.SimpleFSIndexInput

public SimpleFSDirectory.SimpleFSIndexInput(String resourceDesc,
                                            File path,
                                            int bufferSize,
                                            int chunkSize)
                                     throws IOException
Throws:
IOException
Method Detail

readInternal

protected void readInternal(byte[] b,
                            int offset,
                            int len)
                     throws IOException
IndexInput methods

Specified by:
readInternal in class BufferedIndexInput
Parameters:
b - the array to read bytes into
offset - the offset in the array to start storing bytes
len - the number of bytes to read
Throws:
IOException

close

public void close()
           throws IOException
Description copied from class: IndexInput
Closes the stream to further operations.

Specified by:
close in interface Closeable
Specified by:
close in class IndexInput
Throws:
IOException

seekInternal

protected void seekInternal(long position)
Description copied from class: BufferedIndexInput
Expert: implements seek. Sets current position in this file, where the next BufferedIndexInput.readInternal(byte[],int,int) will occur.

Specified by:
seekInternal in class BufferedIndexInput
See Also:
BufferedIndexInput.readInternal(byte[],int,int)

length

public long length()
Description copied from class: IndexInput
The number of bytes in the file.

Specified by:
length in class IndexInput

clone

public Object clone()
Description copied from class: DataInput
Returns a clone of this stream.

Clones of a stream access the same data, and are positioned at the same point as the stream they were cloned from.

Expert: Subclasses must ensure that clones may be positioned at different points in the input from each other and from the stream they were cloned from.

Overrides:
clone in class BufferedIndexInput

copyBytes

public void copyBytes(IndexOutput out,
                      long numBytes)
               throws IOException
Description copied from class: IndexInput
Copies numBytes bytes to the given IndexOutput.

NOTE: this method uses an intermediate buffer to copy the bytes. Consider overriding it in your implementation, if you can make a better, optimized copy.

NOTE ensure that there are enough bytes in the input to copy to output. Otherwise, different exceptions may be thrown, depending on the implementation.

Overrides:
copyBytes in class BufferedIndexInput
Throws:
IOException