Package org.dspace.importer.external.metadatamapping.contributor

Class MultipleMetadataContributor<T>

java.lang.Object

org.dspace.importer.external.metadatamapping.contributor.MultipleMetadataContributor<T>

Type Parameters:

T - The type of record being processed.

All Implemented Interfaces:

MetadataContributor<T>

public class MultipleMetadataContributor<T>
extends Object
implements MetadataContributor<T>

This Contributor is helpful to avoid the limit of the Live Import Framework. In Live Import, one dc schema/element/qualifier could be associate with one and only one MetadataContributor, because the map they're saved in use dc entity as key. In fact, in this implementation we use the MetadataFieldConfig present in this MultipleMetadataContributor contributor, but the data (values of the dc metadatum) will be loaded using any of the contributor defined in the List metadatumContributors, by iterating over them. If the ensureUniqueValues flag is set to true, duplicate values will be filtered out from the final metadata collection.

Author:

Pasquale Cavallo (pasquale.cavallo at 4science dot it)

See Also:

• org.dspace.importer.external.metadatamapping.AbstractMetadataFieldMapping<RecordType>

Constructor Summary

Constructors

Constructor	Description
MultipleMetadataContributor()	Empty constructor
MultipleMetadataContributor(MetadataFieldConfig field, List<MetadataContributor> metadatumContributors)
MultipleMetadataContributor(MetadataFieldConfig field, List<MetadataContributor> metadatumContributors, boolean ensureUniqueValues)

Method Summary

Modifier and Type	Method	Description
Collection<MetadatumDTO>	contributeMetadata(T t)	a separate Metadatum object is created for each index of Metadatum returned from the calls to MetadatumContributor.contributeMetadata(t) for each MetadatumContributor in the metadatumContributors list.
MetadataFieldConfig	getField()	Return the MetadataFieldConfig used while retrieving MetadatumDTO
List<MetadataContributor>	getMetadatumContributors()	Return the List of MetadataContributor objects set to this class
boolean	isEnsureUniqueValues()	Returns whether duplicate metadata values should be removed.
void	setEnsureUniqueValues(boolean ensureUniqueValues)	Sets whether duplicate metadata values should be removed.
void	setField(MetadataFieldConfig field)	Setting the MetadataFieldConfig
void	setMetadataFieldMapping(MetadataFieldMapping<T,MetadataContributor<T>> metadataFieldMapping)	Set the metadatafieldMapping used in the transforming of a record to actual metadata
void	setMetadatumContributors(List<MetadataContributor> metadatumContributors)	Set the List of MetadataContributor objects set to this class

Methods inherited from class java.lang.Object

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

Constructor Details

MultipleMetadataContributor

public MultipleMetadataContributor()

Empty constructor

MultipleMetadataContributor

public MultipleMetadataContributor(MetadataFieldConfig field,
 List<MetadataContributor> metadatumContributors)

Parameters:

field - MetadataFieldConfig used in mapping

metadatumContributors - A list of MetadataContributor

MultipleMetadataContributor

public MultipleMetadataContributor(MetadataFieldConfig field,
 List<MetadataContributor> metadatumContributors,
 boolean ensureUniqueValues)

Parameters:

field - MetadataFieldConfig used in mapping

metadatumContributors - A list of MetadataContributor

ensureUniqueValues - If true, ensures that duplicate values are filtered out

Method Details

setMetadataFieldMapping

public void setMetadataFieldMapping(MetadataFieldMapping<T,MetadataContributor<T>> metadataFieldMapping)

Set the metadatafieldMapping used in the transforming of a record to actual metadata

Specified by:

setMetadataFieldMapping in interface MetadataContributor<T>

Parameters:

metadataFieldMapping - the new mapping.

contributeMetadata

public Collection<MetadatumDTO> contributeMetadata(T t)

a separate Metadatum object is created for each index of Metadatum returned from the calls to MetadatumContributor.contributeMetadata(t) for each MetadatumContributor in the metadatumContributors list. All of them have as dc schema/element/qualifier the values defined in MetadataFieldConfig. If ensureUniqueValues is enabled, duplicate metadata values will be removed, ensuring uniqueness.

Specified by:

contributeMetadata in interface MetadataContributor<T>

Parameters:

t - the object we are trying to translate

Returns:

a collection of metadata got from each MetadataContributor

getField

public MetadataFieldConfig getField()

Return the MetadataFieldConfig used while retrieving MetadatumDTO

Returns:

MetadataFieldConfig

setField

public void setField(MetadataFieldConfig field)

Setting the MetadataFieldConfig

Parameters:

field - MetadataFieldConfig used while retrieving MetadatumDTO

getMetadatumContributors

public List<MetadataContributor> getMetadatumContributors()

Return the List of MetadataContributor objects set to this class

Returns:

metadatumContributors, list of MetadataContributor

setMetadatumContributors

public void setMetadatumContributors(List<MetadataContributor> metadatumContributors)

Set the List of MetadataContributor objects set to this class

Parameters:

metadatumContributors - A list of MetadatumContributor classes

isEnsureUniqueValues

public boolean isEnsureUniqueValues()

Returns whether duplicate metadata values should be removed.

Returns:

true if duplicate values should be filtered out, false otherwise.

setEnsureUniqueValues

public void setEnsureUniqueValues(boolean ensureUniqueValues)

Sets whether duplicate metadata values should be removed.

Parameters:

ensureUniqueValues - if true, ensures that duplicate values are filtered out.