org.apache.lucene.store
Class MockIndexOutputWrapper

java.lang.Object
  org.apache.lucene.store.DataOutput
      org.apache.lucene.store.IndexOutput
          org.apache.lucene.store.MockIndexOutputWrapper

All Implemented Interfaces:

Closeable

public class MockIndexOutputWrapper
extends IndexOutput

Used by MockRAMDirectory to create an output stream that will throw an IOException on fake disk full, track max disk space actually used, and maybe throw random IOExceptions.

Constructor Summary

MockIndexOutputWrapper(MockDirectoryWrapper dir, IndexOutput delegate, String name)
Construct an empty output buffer.

Method Summary

void	close() Closes this stream to further operations.
void	copyBytes(DataInput input, long numBytes) Copy numBytes bytes from input to ourself.
void	flush() Forces any buffered output to be written.
long	getFilePointer() Returns the current position in this file, where the next write will occur.
long	length() The number of bytes in the file.
void	seek(long pos) Sets current position in this file, where the next write will occur.
void	setLength(long length) Set the file length.
void	writeByte(byte b) Writes a single byte.
void	writeBytes(byte[] b, int offset, int len) Writes an array of bytes.

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

writeBytes, writeChars, writeChars, writeInt, writeLong, writeShort, writeString, writeStringStringMap, writeVInt, writeVLong

Methods inherited from class java.lang.Object

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

Constructor Detail

MockIndexOutputWrapper

public MockIndexOutputWrapper(MockDirectoryWrapper dir,
                              IndexOutput delegate,
                              String name)

Construct an empty output buffer.

Method Detail

close

public void close()
           throws IOException

Description copied from class: IndexOutput

Closes this stream to further operations.

Specified by:

close in interface Closeable

Specified by:

close in class IndexOutput

Throws:

IOException

flush

public void flush()
           throws IOException

Description copied from class: IndexOutput

Forces any buffered output to be written.

Specified by:

flush in class IndexOutput

Throws:

IOException

writeByte

public void writeByte(byte b)
               throws IOException

Description copied from class: DataOutput

Writes a single byte.

Specified by:

writeByte in class DataOutput

Throws:

IOException

See Also:

DataInput.readByte()

writeBytes

public void writeBytes(byte[] b,
                       int offset,
                       int len)
                throws IOException

Description copied from class: DataOutput

Writes an array of bytes.

Specified by:

writeBytes in class DataOutput

Parameters:

b - the bytes to write

offset - the offset in the byte array

len - the number of bytes to write

Throws:

IOException

See Also:

DataInput.readBytes(byte[],int,int)

getFilePointer

public long getFilePointer()

Description copied from class: IndexOutput

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

Specified by:

getFilePointer in class IndexOutput

See Also:

IndexOutput.seek(long)

seek

public void seek(long pos)
          throws IOException

Description copied from class: IndexOutput

Sets current position in this file, where the next write will occur.

Specified by:

seek in class IndexOutput

Throws:

IOException

See Also:

IndexOutput.getFilePointer()

length

public long length()
            throws IOException

Description copied from class: IndexOutput

The number of bytes in the file.

Specified by:

length in class IndexOutput

Throws:

IOException

setLength

public void setLength(long length)
               throws IOException

Description copied from class: IndexOutput

Set the file length. By default, this method does nothing (it's optional for a Directory to implement it). But, certain Directory implementations (for example @see FSDirectory) can use this to inform the underlying IO system to pre-allocate the file to the specified size. If the length is longer than the current file length, the bytes added to the file are undefined. Otherwise the file is truncated.

Overrides:

setLength in class IndexOutput

Parameters:

length - file length

Throws:

IOException

copyBytes

public void copyBytes(DataInput input,
                      long numBytes)
               throws IOException

Description copied from class: DataOutput

Copy numBytes bytes from input to ourself.

Overrides:

copyBytes in class DataOutput

Throws:

IOException