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

All Implemented Interfaces:

Closeable, AutoCloseable
```
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

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

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`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 AutoCloseable
    
    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

Class MockIndexOutputWrapper

Constructor Summary

Method Summary

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

Methods inherited from class java.lang.Object

Constructor Detail

MockIndexOutputWrapper

Method Detail

close

flush

writeByte

writeBytes

getFilePointer

seek

length

setLength

copyBytes