Package org.dspace.app.sfx

Class SFXFileReaderServiceImpl

java.lang.Object

org.dspace.app.sfx.SFXFileReaderServiceImpl

All Implemented Interfaces:

SFXFileReaderService

public class SFXFileReaderServiceImpl
extends Object
implements SFXFileReaderService

XML configuration file reader for DSpace metadata fields (DC) mapping to OpenURL parameters.

This class reads the [dspace]/config/sfx.xml configuration file, which contains pairs of DSpace item metadata values and OpenURL parameter names. Then it takes an item and constructs an OpenURL for it with values of parameters filled in from the paired metadata fields.

Version:

$Revision$

Author:

Stuart Lewis, Graham Triggs

Field Summary

Fields

Modifier and Type	Field	Description
protected Document	doc	The SFX configuration file
protected ItemService	itemService

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	SFXFileReaderServiceImpl()

Method Summary

Modifier and Type	Method	Description
String	doNodes(Node node, Item item)	Process the item, mapping each of its metadata fields defined in the configuration file to an OpenURL parameter
String	getAttribute(Node e, String name)	Returns the value of the node's attribute named <name>
Node	getElement(Node node)	Returns element node
String	getValue(Node node)	Returns the value found in the Text node (if any) in the node list that's passed in.
boolean	isEmptyTextNode(Node nd)	Is Empty text Node *
String	loadSFXFile(String fileName, Item item)	Loads the SFX configuration file
Document	parseFile(String fileName)	Parses XML file and returns XML document.
protected String	processFields(Node e, Item item)	Process the field nodes, mapping each metadata field defined in the configuration file to an OpenURL parameter

Methods inherited from class java.lang.Object

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

Field Detail

doc

protected Document doc

The SFX configuration file

itemService

@Autowired(required=true)
protected ItemService itemService

Constructor Detail

SFXFileReaderServiceImpl

protected SFXFileReaderServiceImpl()

Method Detail

loadSFXFile

public String loadSFXFile(String fileName,
                          Item item)
                   throws IOException

Description copied from interface: SFXFileReaderService

Loads the SFX configuration file

Specified by:

loadSFXFile in interface SFXFileReaderService

Parameters:

fileName - The name of the SFX configuration file

item - The item to process, from which metadata values will be taken

Returns:

the SFX string

Throws:

IOException - if IO error

parseFile

public Document parseFile(String fileName)

Description copied from interface: SFXFileReaderService

Parses XML file and returns XML document.

Specified by:

parseFile in interface SFXFileReaderService

Parameters:

fileName - XML file to parse

Returns:

XML document or null if error occurred. The error is caught and logged.

doNodes

public String doNodes(Node node,
                      Item item)
               throws IOException

Description copied from interface: SFXFileReaderService

Process the item, mapping each of its metadata fields defined in the configuration file to an OpenURL parameter

Specified by:

doNodes in interface SFXFileReaderService

Parameters:

node - DOM node of the mapping pair in the XML file (field element)

item - The item to process, from which metadata values will be taken

Returns:

processed fields.

Throws:

IOException - if IO error

processFields

protected String processFields(Node e,
                               Item item)
                        throws IOException

Process the field nodes, mapping each metadata field defined in the configuration file to an OpenURL parameter

Parameters:

e - DOM node of the mapping pair in the XML file (field element)

item - The item to process, from which metadata values will be taken

Returns:

assembled OpenURL query.

Throws:

IOException - if IO error

getElement

public Node getElement(Node node)

Description copied from interface: SFXFileReaderService

Returns element node

Specified by:

getElement in interface SFXFileReaderService

Parameters:

node - element (it is XML tag)

Returns:

Element node otherwise null

isEmptyTextNode

public boolean isEmptyTextNode(Node nd)

Description copied from interface: SFXFileReaderService

Is Empty text Node *

Specified by:

isEmptyTextNode in interface SFXFileReaderService

Parameters:

nd - node

Returns:

true or false

getAttribute

public String getAttribute(Node e,
                           String name)

Description copied from interface: SFXFileReaderService

Returns the value of the node's attribute named <name>

Specified by:

getAttribute in interface SFXFileReaderService

Parameters:

e - node

name - name

Returns:

value

getValue

public String getValue(Node node)

Description copied from interface: SFXFileReaderService

Returns the value found in the Text node (if any) in the node list that's passed in.

Specified by:

getValue in interface SFXFileReaderService

Parameters:

node - node

Returns:

value