org.deepfs.fsml.parsers
Class XMLParser

java.lang.Object
  org.deepfs.fsml.parsers.XMLParser

All Implemented Interfaces:

IFileParser

public final class XMLParser
extends Object
implements IFileParser

Parser for XML files.

Author:

Workgroup DBIS, University of Konstanz 2005-10, ISC License, Bastian Lemke

Constructor Summary

XMLParser()

Method Summary

boolean	check(DeepFile df) Checks if there is a File in correct format and can be read by the parser.
void	extract(DeepFile deepFile) Extracts metadata and file contents.
Data	parse(BufferedFileChannel f, Prop prop) Checks if the document is well-formed and returns the corresponding main memory database.
void	propagate(DeepFile deepFile) Propagates the metadata and file contents back to the file in the file system.

Methods inherited from class java.lang.Object

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

Constructor Detail

XMLParser

public XMLParser()

Method Detail

check

public boolean check(DeepFile df)
              throws IOException

Description copied from interface: IFileParser

Checks if there is a File in correct format and can be read by the parser. Checks e.g. header bytes.

Specified by:

check in interface IFileParser

Parameters:

df - the DeepFile to read from

Returns:

true if the file is supported

Throws:

IOException - if an error occurs while reading from the file

parse

public Data parse(BufferedFileChannel f,
                  Prop prop)
           throws IOException

Checks if the document is well-formed and returns the corresponding main memory database.

Parameters:

f - the BufferedFileChannel to read the xml document from

prop - the database properties to use

Returns:

the main memory database or null if the document is not well-formed

Throws:

IOException - if any error occurs

extract

public void extract(DeepFile deepFile)
             throws IOException

Description copied from interface: IFileParser

Extracts metadata and file contents.

Specified by:

extract in interface IFileParser

Parameters:

deepFile - the DeepFile to save metadata and content to

Throws:

IOException - if any error occurs while reading from the file

propagate

public void propagate(DeepFile deepFile)

Description copied from interface: IFileParser

Propagates the metadata and file contents back to the file in the file system.

Specified by:

propagate in interface IFileParser

Parameters:

deepFile - the DeepFile that contains the metadata and file contents