Package org.apache.lucene.store

Class ByteBufferIndexInput.MultiBufferImpl

java.lang.Object

org.apache.lucene.store.DataInput

org.apache.lucene.store.IndexInput

org.apache.lucene.store.ByteBufferIndexInput

org.apache.lucene.store.ByteBufferIndexInput.MultiBufferImpl

All Implemented Interfaces:

java.io.Closeable, java.lang.AutoCloseable, java.lang.Cloneable, RandomAccessInput

Enclosing class:

ByteBufferIndexInput

static final class ByteBufferIndexInput.MultiBufferImpl
extends ByteBufferIndexInput

This class adds offset support to ByteBufferIndexInput, which is needed for slices.

Nested Class Summary

Nested classes/interfaces inherited from class org.apache.lucene.store.ByteBufferIndexInput

ByteBufferIndexInput.MultiBufferImpl, ByteBufferIndexInput.SingleBufferImpl

Field Summary

Fields

Modifier and Type	Field	Description
private int	offset

Fields inherited from class org.apache.lucene.store.ByteBufferIndexInput

buffers, chunkSizeMask, chunkSizePower, curBuf, curBufIndex, guard, isClone, length

Constructor Summary

Constructors

Constructor	Description
MultiBufferImpl(java.lang.String resourceDescription, java.nio.ByteBuffer[] buffers, int offset, long length, int chunkSizePower, ByteBufferGuard guard)

Method Summary

Modifier and Type	Method	Description
protected ByteBufferIndexInput	buildSlice(java.lang.String sliceDescription, long ofs, long length)	Builds the actual sliced IndexInput (may apply extra offset in subclasses).
long	getFilePointer()	Returns the current position in this file, where the next read will occur.
byte	readByte(long pos)	Reads a byte at the given position in the file
int	readInt(long pos)	Reads an integer at the given position in the file
long	readLong(long pos)	Reads a long at the given position in the file
short	readShort(long pos)	Reads a short at the given position in the file
void	seek(long pos)	Sets current position in this file, where the next read will occur.

Methods inherited from class org.apache.lucene.store.ByteBufferIndexInput

clone, close, length, newCloneInstance, newInstance, readByte, readBytes, readInt, readLELongs, readLong, readShort, setCurBuf, slice

Methods inherited from class org.apache.lucene.store.IndexInput

getFullSliceDescription, randomAccessSlice, toString

Methods inherited from class org.apache.lucene.store.DataInput

readBytes, readMapOfStrings, readSetOfStrings, readString, readVInt, readVLong, readZInt, readZLong, skipBytes

Methods inherited from class java.lang.Object

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

Field Detail

offset

private final int offset

Constructor Detail

MultiBufferImpl

MultiBufferImpl(java.lang.String resourceDescription,
                java.nio.ByteBuffer[] buffers,
                int offset,
                long length,
                int chunkSizePower,
                ByteBufferGuard guard)

Method Detail

seek

public void seek(long pos)
          throws java.io.IOException

Description copied from class: IndexInput

Sets current position in this file, where the next read will occur. If this is beyond the end of the file then this will throw EOFException and then the stream is in an undetermined state.

Overrides:

seek in class ByteBufferIndexInput

Throws:

java.io.IOException

See Also:

IndexInput.getFilePointer()

getFilePointer

public long getFilePointer()

Description copied from class: IndexInput

Returns the current position in this file, where the next read will occur.

Overrides:

getFilePointer in class ByteBufferIndexInput

See Also:

IndexInput.seek(long)

readByte

public byte readByte(long pos)
              throws java.io.IOException

Description copied from interface: RandomAccessInput

Reads a byte at the given position in the file

Specified by:

readByte in interface RandomAccessInput

Overrides:

readByte in class ByteBufferIndexInput

Throws:

java.io.IOException

See Also:

DataInput.readByte()

readShort

public short readShort(long pos)
                throws java.io.IOException

Description copied from interface: RandomAccessInput

Reads a short at the given position in the file

Specified by:

readShort in interface RandomAccessInput

Overrides:

readShort in class ByteBufferIndexInput

Throws:

java.io.IOException

See Also:

DataInput.readShort()

readInt

public int readInt(long pos)
            throws java.io.IOException

Description copied from interface: RandomAccessInput

Reads an integer at the given position in the file

Specified by:

readInt in interface RandomAccessInput

Overrides:

readInt in class ByteBufferIndexInput

Throws:

java.io.IOException

See Also:

DataInput.readInt()

readLong

public long readLong(long pos)
              throws java.io.IOException

Description copied from interface: RandomAccessInput

Reads a long at the given position in the file

Specified by:

readLong in interface RandomAccessInput

Overrides:

readLong in class ByteBufferIndexInput

Throws:

java.io.IOException

See Also:

DataInput.readLong()

buildSlice

protected ByteBufferIndexInput buildSlice(java.lang.String sliceDescription,
                                          long ofs,
                                          long length)

Description copied from class: ByteBufferIndexInput

Builds the actual sliced IndexInput (may apply extra offset in subclasses).

Overrides:

buildSlice in class ByteBufferIndexInput