Package org.basex.data

Class DataClip

java.lang.Object

org.basex.data.DataClip

public final class DataClip
extends Object

Data container with start and end offset. Used mostly to save memory with insertion sequence caching (only one Data instance). Arbitrary trees can be stored in this clip. To distinguish between two insertion sequences, the root node of each sequence points to the virtual parent pre value -1.

Author:

BaseX Team 2005-21, BSD License, Christian Gruen

Field Summary

Fields

Modifier and Type	Field	Description
final Data	data	Data reference.
final int	end	End value (+1).
final int	fragments	Number of contained fragments.
final int	start	Start value.

Constructor Summary

Constructors

Constructor	Description
DataClip(Data data)	Constructor.
DataClip(Data data, int start, int end)	Constructor.
DataClip(Data data, int start, int end, int fragments)	Constructor.

Method Summary

Modifier and Type	Method	Description
DataClip	context(Context context)	Assigns a database context.
void	finish()	Unregisters and drops a temporary database instance.
int	size()	Returns the box size.

Methods inherited from class java.lang.Object

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

Field Details

data

public final Data data

Data reference.

start

public final int start

Start value.

end

public final int end

End value (+1).

fragments

public final int fragments

Number of contained fragments.

Constructor Details

DataClip

public DataClip(Data data)

Constructor.

Parameters:

data - data reference

DataClip

public DataClip(Data data,
 int start,
 int end)

Constructor.

Parameters:

data - data reference

start - start

end - end

DataClip

public DataClip(Data data,
 int start,
 int end,
 int fragments)

Constructor.

Parameters:

data - data reference

start - start

end - end

fragments - number of fragments

Method Details

size

public int size()

Returns the box size.

Returns:

size

context

public DataClip context(Context context)

Assigns a database context.

Parameters:

context - context

Returns:

self reference

finish

public void finish()

Unregisters and drops a temporary database instance.