Package org.dspace.identifier

Class EZIDIdentifierProvider

java.lang.Object

org.dspace.identifier.IdentifierProvider

org.dspace.identifier.EZIDIdentifierProvider

public class EZIDIdentifierProvider
extends IdentifierProvider

Provide service for DOIs through DataCite using the EZID service.

Configuration of this class is is in two parts.

Installation-specific configuration (credentials and the "shoulder" value which forms a prefix of the site's DOIs) is supplied from property files in [DSpace]/config**.

identifier.doi.ezid.shoulder

base of the site's DOIs. Example: 10.5072/FK2

identifier.doi.ezid.user

EZID username.

identifier.doi.ezid.password

EZID password.

identifier.doi.ezid.publisher

A default publisher, for Items not previously published. EZID requires a publisher.

Then there are properties injected using Spring:

• There is a Map (with the property name "crosswalk") from EZID metadata field names into DSpace field names, injected by Spring. Specify the fully-qualified names of all metadata fields to be looked up on a DSpace object and their values set on mapped fully-qualified names in the object's DataCite metadata.
• A second map ("crosswalkTransform") provides Transform instances mapped from EZID metadata field names. This allows the crosswalk to rewrite field values where the form maintained by DSpace is not directly usable in EZID metadata.
• Optional: A boolean property ("generateDataciteXML") that controls the creation and inclusion of DataCite xml schema during the metadata crosswalking. The default "DataCite" dissemination plugin uses DIM2DataCite.xsl for crosswalking. Default value: false.
• Optional: A string property ("disseminationCrosswalkName") that can be used to set the name of the dissemination crosswalk plugin for metadata crosswalking. Default value: "DataCite".

Author:

mwood

Field Summary

Fields

Modifier and Type	Field	Description
protected ContentServiceFactory	contentServiceFactory
protected String	DATACITE_XML_CROSSWALK
static final String	DOI_ELEMENT
static final String	DOI_QUALIFIER
protected boolean	GENERATE_DATACITE_XML
protected ItemService	itemService
static final String	MD_SCHEMA

Fields inherited from class org.dspace.identifier.IdentifierProvider

configurationService, parentService

Constructor Summary

Constructors

Constructor	Description
EZIDIdentifierProvider()

Method Summary

Modifier and Type	Method	Description
void	delete(Context context, DSpaceObject dso)	Unbind this type of identifier(s) from an object.
void	delete(Context context, DSpaceObject dso, String identifier)	Unbind the given identifier from an object.
Map<String,String>	getCrosswalk()
EZIDRequestFactory	getRequestFactory()
String	lookup(Context context, DSpaceObject object)	Return the identifier for a DSpaceObject.
String	mint(Context context, DSpaceObject dso)	Create an identifier for a DSpaceObject.
String	register(Context context, DSpaceObject dso)	Create and apply an identifier to a DSpaceObject.
void	register(Context context, DSpaceObject object, String identifier)	Create a specific identifier and apply it to an object.
void	reserve(Context context, DSpaceObject dso, String identifier)	Set an object's identifier.
DSpaceObject	resolve(Context context, String identifier, String... attributes)	Find the object named by a given identifier.
void	setCrosswalk(Map<String,String> aCrosswalk)	Provide a map from DSO metadata keys to EZID keys.
void	setCrosswalkTransform(Map<String,Transform> transformMap)	Provide a map from DSO metadata keys to classes which can transform their values to something acceptable to EZID.
void	setDisseminationCrosswalkName(String DATACITE_XML_CROSSWALK)
void	setGenerateDataciteXML(boolean GENERATE_DATACITE_XML)
protected void	setItemService(ItemService itemService)	Method should never be used aside from the unit tests where we can cannot autowire this class.
void	setRequestFactory(EZIDRequestFactory aRequestFactory)
boolean	supports(Class<? extends Identifier> identifier)	Can this provider provide identifiers of a given type?
boolean	supports(String identifier)	Can this provider provide identifiers of a given type?

Methods inherited from class org.dspace.identifier.IdentifierProvider

setConfigurationService, setParentService

Methods inherited from class java.lang.Object

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

Field Details

MD_SCHEMA

public static final String MD_SCHEMA

See Also:

• Constant Field Values

DOI_ELEMENT

public static final String DOI_ELEMENT

See Also:

• Constant Field Values

DOI_QUALIFIER

public static final String DOI_QUALIFIER

GENERATE_DATACITE_XML

protected boolean GENERATE_DATACITE_XML

DATACITE_XML_CROSSWALK

protected String DATACITE_XML_CROSSWALK

contentServiceFactory

@Autowired(required=true)
protected ContentServiceFactory contentServiceFactory

itemService

@Autowired(required=true)
protected ItemService itemService

Constructor Details

EZIDIdentifierProvider

public EZIDIdentifierProvider()

Method Details

supports

public boolean supports(Class<? extends Identifier> identifier)

Description copied from class: IdentifierProvider

Can this provider provide identifiers of a given type?

Specified by:

supports in class IdentifierProvider

Parameters:

identifier - requested type.

Returns:

true if the given type is assignable from this provider's type.

supports

public boolean supports(String identifier)

Description copied from class: IdentifierProvider

Can this provider provide identifiers of a given type?

Specified by:

supports in class IdentifierProvider

Parameters:

identifier - requested type.

Returns:

true if this provider can provide the named type of identifier.

register

public String register(Context context,
 DSpaceObject dso)
                throws IdentifierException

Description copied from class: IdentifierProvider

Create and apply an identifier to a DSpaceObject.

Specified by:

register in class IdentifierProvider

Parameters:

context - The relevant DSpace Context.

dso - object to be named.

Returns:

existing identifier of item if it has one, else a new identifier.

Throws:

IdentifierException - if identifier error

register

public void register(Context context,
 DSpaceObject object,
 String identifier)

Description copied from class: IdentifierProvider

Create a specific identifier and apply it to an object.

Specified by:

register in class IdentifierProvider

Parameters:

context - The relevant DSpace Context.

object - to be identified.

identifier - to be created.

reserve

public void reserve(Context context,
 DSpaceObject dso,
 String identifier)
             throws IdentifierException

Description copied from class: IdentifierProvider

Set an object's identifier.

Specified by:

reserve in class IdentifierProvider

Parameters:

context - The relevant DSpace Context.

dso - object to be identified.

identifier - to be set on the object.

Throws:

IdentifierException - if identifier error

mint

public String mint(Context context,
 DSpaceObject dso)
            throws IdentifierException

Description copied from class: IdentifierProvider

Create an identifier for a DSpaceObject.

Specified by:

mint in class IdentifierProvider

Parameters:

context - The relevant DSpace Context.

dso - object to be named.

Returns:

existing identifier of dso if it has one, else a new identifier.

Throws:

IdentifierException - if identifier error

resolve

public DSpaceObject resolve(Context context,
 String identifier,
 String... attributes)
                     throws IdentifierNotFoundException,
IdentifierNotResolvableException

Description copied from class: IdentifierProvider

Find the object named by a given identifier.

Specified by:

resolve in class IdentifierProvider

Parameters:

context - The relevant DSpace Context.

identifier - to be resolved.

attributes - additional information for resolving identifier.

Returns:

the named object.

Throws:

IdentifierNotFoundException - if identifier not found

IdentifierNotResolvableException - if identifier not resolvable

lookup

public String lookup(Context context,
 DSpaceObject object)
              throws IdentifierNotFoundException,
IdentifierNotResolvableException

Description copied from class: IdentifierProvider

Return the identifier for a DSpaceObject.

Specified by:

lookup in class IdentifierProvider

Parameters:

context - The relevant DSpace Context.

object - The object to be looked up.

Returns:

identifier for object.

Throws:

IdentifierNotFoundException - if identifier not found

IdentifierNotResolvableException - if identifier not resolvable

delete

public void delete(Context context,
 DSpaceObject dso)
            throws IdentifierException

Description copied from class: IdentifierProvider

Unbind this type of identifier(s) from an object.

Specified by:

delete in class IdentifierProvider

Parameters:

context - The relevant DSpace Context.

dso - object to lose its identity.

Throws:

IdentifierException - if identifier error

delete

public void delete(Context context,
 DSpaceObject dso,
 String identifier)
            throws IdentifierException

Description copied from class: IdentifierProvider

Unbind the given identifier from an object.

Specified by:

delete in class IdentifierProvider

Parameters:

context - The relevant DSpace Context.

dso - object to be de-identified.

identifier - to be removed.

Throws:

IdentifierException - if identifier error

setCrosswalk

@Autowired(required=true)
public void setCrosswalk(Map<String,String> aCrosswalk)

Provide a map from DSO metadata keys to EZID keys. This will drive the generation of EZID metadata for the minting of new identifiers.

Parameters:

aCrosswalk - map of metadata fields to EZID keys

getCrosswalk

public Map<String,String> getCrosswalk()

setCrosswalkTransform

public void setCrosswalkTransform(Map<String,Transform> transformMap)

Provide a map from DSO metadata keys to classes which can transform their values to something acceptable to EZID.

Parameters:

transformMap - map of metadata fields to EZID transformation classes

setGenerateDataciteXML

public void setGenerateDataciteXML(boolean GENERATE_DATACITE_XML)

setDisseminationCrosswalkName

public void setDisseminationCrosswalkName(String DATACITE_XML_CROSSWALK)

setRequestFactory

@Autowired(required=true)
public void setRequestFactory(EZIDRequestFactory aRequestFactory)

getRequestFactory

public EZIDRequestFactory getRequestFactory()

setItemService

protected void setItemService(ItemService itemService)

Method should never be used aside from the unit tests where we can cannot autowire this class.

Parameters:

itemService - itemService instance