org.apache.lucene.store

Class MockIndexInputWrapper

java.lang.Object

org.apache.lucene.store.DataInput

org.apache.lucene.store.IndexInput

org.apache.lucene.store.MockIndexInputWrapper

All Implemented Interfaces:

Closeable, AutoCloseable, Cloneable

public class MockIndexInputWrapper
extends IndexInput

Used by MockDirectoryWrapper to create an input stream that keeps track of when it's been closed.

Constructor Summary

Constructors

Constructor and Description
MockIndexInputWrapper(MockDirectoryWrapper dir, String name, IndexInput delegate) Construct an empty output buffer.

Method Summary

Modifier and Type	Method and Description
MockIndexInputWrapper	clone() Returns a clone of this stream.
void	close() Closes the stream to further operations.
long	getFilePointer() Returns the current position in this file, where the next read will occur.
long	length() The number of bytes in the file.
byte	readByte() Reads and returns a single byte.
void	readBytes(byte[] b, int offset, int len) Reads a specified number of bytes into an array at the specified offset.
void	readBytes(byte[] b, int offset, int len, boolean useBuffer) Reads a specified number of bytes into an array at the specified offset with control over whether the read should be buffered (callers who have their own buffer should pass in "false" for useBuffer).
int	readInt() Reads four bytes and returns an int.
long	readLong() Reads eight bytes and returns a long.
short	readShort() Reads two bytes and returns a short.
String	readString() Reads a string.
Set<String>	readStringSet() Reads a Set<String> previously written with DataOutput.writeStringSet(Set).
Map<String,String>	readStringStringMap() Reads a Map<String,String> previously written with DataOutput.writeStringStringMap(Map).
int	readVInt() Reads an int stored in variable-length format.
long	readVLong() Reads a long stored in variable-length format.
int	readZInt() Read a zig-zag-encoded variable-length integer.
long	readZLong() Read a zig-zag-encoded variable-length integer.
void	seek(long pos) Sets current position in this file, where the next read will occur.
void	skipBytes(long numBytes) Skip over numBytes bytes.
IndexInput	slice(String sliceDescription, long offset, long length) Creates a slice of this index input, with the given description, offset, and length.
String	toString()

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

getFullSliceDescription, randomAccessSlice

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

readMapOfStrings, readSetOfStrings

Methods inherited from class java.lang.Object

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

Constructor Detail

MockIndexInputWrapper

public MockIndexInputWrapper(MockDirectoryWrapper dir,
                             String name,
                             IndexInput delegate)

Construct an empty output buffer.

Method Detail

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 interface AutoCloseable

Specified by:

close in class IndexInput

Throws:

IOException

clone

public MockIndexInputWrapper clone()

Description copied from class: IndexInput

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.

Warning: Lucene never closes cloned IndexInputs, it will only call IndexInput.close() on the original object.

If you access the cloned IndexInput after closing the original object, any readXXX methods will throw AlreadyClosedException.

Overrides:

clone in class IndexInput

slice

public IndexInput slice(String sliceDescription,
                        long offset,
                        long length)
                 throws IOException

Description copied from class: IndexInput

Creates a slice of this index input, with the given description, offset, and length. The slice is seeked to the beginning.

Specified by:

slice in class IndexInput

Throws:

IOException

getFilePointer

public long getFilePointer()

Description copied from class: IndexInput

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

Specified by:

getFilePointer in class IndexInput

See Also:

IndexInput.seek(long)

seek

public void seek(long pos)
          throws IOException

Description copied from class: IndexInput

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

Specified by:

seek in class IndexInput

Throws:

IOException

See Also:

IndexInput.getFilePointer()

length

public long length()

Description copied from class: IndexInput

The number of bytes in the file.

Specified by:

length in class IndexInput

readByte

public byte readByte()
              throws IOException

Description copied from class: DataInput

Reads and returns a single byte.

Specified by:

readByte in class DataInput

Throws:

IOException

See Also:

DataOutput.writeByte(byte)

readBytes

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

Description copied from class: DataInput

Reads a specified number of bytes into an array at the specified offset.

Specified by:

readBytes in class DataInput

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

See Also:

DataOutput.writeBytes(byte[],int)

readBytes

public void readBytes(byte[] b,
                      int offset,
                      int len,
                      boolean useBuffer)
               throws IOException

Description copied from class: DataInput

Reads a specified number of bytes into an array at the specified offset with control over whether the read should be buffered (callers who have their own buffer should pass in "false" for useBuffer). Currently only BufferedIndexInput respects this parameter.

Overrides:

readBytes in class DataInput

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

useBuffer - set to false if the caller will handle buffering.

Throws:

IOException

See Also:

DataOutput.writeBytes(byte[],int)

readShort

public short readShort()
                throws IOException

Description copied from class: DataInput

Reads two bytes and returns a short.

Overrides:

readShort in class DataInput

Throws:

IOException

See Also:

DataOutput.writeByte(byte)

readInt

public int readInt()
            throws IOException

Description copied from class: DataInput

Reads four bytes and returns an int.

Overrides:

readInt in class DataInput

Throws:

IOException

See Also:

DataOutput.writeInt(int)

readLong

public long readLong()
              throws IOException

Description copied from class: DataInput

Reads eight bytes and returns a long.

Overrides:

readLong in class DataInput

Throws:

IOException

See Also:

DataOutput.writeLong(long)

readString

public String readString()
                  throws IOException

Description copied from class: DataInput

Reads a string.

Overrides:

readString in class DataInput

Throws:

IOException

See Also:

DataOutput.writeString(String)

readStringStringMap

public Map<String,String> readStringStringMap()
                                       throws IOException

Description copied from class: DataInput

Reads a Map<String,String> previously written with DataOutput.writeStringStringMap(Map).

Overrides:

readStringStringMap in class DataInput

Throws:

IOException

readVInt

public int readVInt()
             throws IOException

Description copied from class: DataInput

Reads an int stored in variable-length format. Reads between one and five bytes. Smaller values take fewer bytes. Negative numbers are not supported.

The format is described further in DataOutput.writeVInt(int).

Overrides:

readVInt in class DataInput

Throws:

IOException

See Also:

DataOutput.writeVInt(int)

readVLong

public long readVLong()
               throws IOException

Description copied from class: DataInput

Reads a long stored in variable-length format. Reads between one and nine bytes. Smaller values take fewer bytes. Negative numbers are not supported.

The format is described further in DataOutput.writeVInt(int).

Overrides:

readVLong in class DataInput

Throws:

IOException

See Also:

DataOutput.writeVLong(long)

readZInt

public int readZInt()
             throws IOException

Description copied from class: DataInput

Read a zig-zag-encoded variable-length integer.

Overrides:

readZInt in class DataInput

Throws:

IOException

See Also:

DataOutput.writeZInt(int)

readZLong

public long readZLong()
               throws IOException

Description copied from class: DataInput

Read a zig-zag-encoded variable-length integer. Reads between one and ten bytes.

Overrides:

readZLong in class DataInput

Throws:

IOException

See Also:

DataOutput.writeZLong(long)

readStringSet

public Set<String> readStringSet()
                          throws IOException

Description copied from class: DataInput

Reads a Set<String> previously written with DataOutput.writeStringSet(Set).

Overrides:

readStringSet in class DataInput

Throws:

IOException

skipBytes

public void skipBytes(long numBytes)
               throws IOException

Description copied from class: DataInput

Skip over numBytes bytes. The contract on this method is that it should have the same behavior as reading the same number of bytes into a buffer and discarding its content. Negative values of numBytes are not supported.

Overrides:

skipBytes in class DataInput

Throws:

IOException

toString

public String toString()

Overrides:

toString in class IndexInput