org.treetank.service.xml.shredder

Class XMLUpdateShredder

java.lang.Object

org.treetank.service.xml.shredder.XMLShredder

org.treetank.service.xml.shredder.XMLUpdateShredder

All Implemented Interfaces:

Callable<Void>

public final class XMLUpdateShredder
extends XMLShredder
implements Callable<Void>

XMLUpdateShredder

Shredder, which updates a Treetank revision to the next revision, as thus it just inserts or deletes nodes, which have been changed. Renames are treated as insert new node, delete old node.

Author:

Johannes Lichtenberger, University of Konstanz

Field Summary

Fields

Modifier and Type	Field and Description
protected List<XMLEvent>	mEvents Events to parse.
protected File	mFile File to parse.

Fields inherited from class org.treetank.service.xml.shredder.XMLShredder

mFirstChildAppend, mReader, mWtx

Constructor Summary

Constructors

Constructor and Description
XMLUpdateShredder(INodeWriteTrx paramWtx, XMLEventReader paramReader, EShredderInsert paramAddAsFirstChild, Object paramData, EShredderCommit paramCommit) Normal constructor to invoke a shredding process on a existing INodeWriteTrx.

Method Summary

Methods

Modifier and Type	Method and Description
Void	call() Invoking the shredder.
static void	main(String... args) Main method.

Methods inherited from class org.treetank.service.xml.shredder.XMLShredder

addNewElement, addNewText, createFileReader, createListReader, createStringReader, getLatch, insertNewContent

Methods inherited from class java.lang.Object

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

Field Detail

mFile

protected transient File mFile

File to parse.

mEvents

protected transient List<XMLEvent> mEvents

Events to parse.

Constructor Detail

XMLUpdateShredder

public XMLUpdateShredder(INodeWriteTrx paramWtx,
                 XMLEventReader paramReader,
                 EShredderInsert paramAddAsFirstChild,
                 Object paramData,
                 EShredderCommit paramCommit)
                  throws TTException

Normal constructor to invoke a shredding process on a existing INodeWriteTrx.

Parameters:

paramWtx - INodeWriteTrx where the new XML Fragment should be placed

paramReader - XMLEventReader (StAX parser) of the XML Fragment

paramAddAsFirstChild - if the insert is occuring on a node in an existing tree. false is not possible when wtx is on root node

paramData - the data the update shredder operates on. Either a List of XMLEvents or a File

paramCommit - determines if changes should be commited

Throws:

TTUsageException - if insertasfirstChild && updateOnly is both true OR if wtx is not pointing to doc-root and updateOnly= true

TTIOException - if Treetank cannot access node keys

TTException

Method Detail

call

public Void call()
          throws TTException

Invoking the shredder.

Specified by:

call in interface Callable<Void>

Overrides:

call in class XMLShredder

Returns:

revision of last revision (before commit)

Throws:

TTException - if Treetank encounters something went wrong

main

public static void main(String... args)

Main method.

Parameters:

args - Input and output files.