Package org.dspace.content

Class RelationshipMetadataServiceImpl

java.lang.Object

org.dspace.content.RelationshipMetadataServiceImpl

All Implemented Interfaces:

RelationshipMetadataService

public class RelationshipMetadataServiceImpl
extends Object
implements RelationshipMetadataService

Field Summary

Fields

Modifier and Type	Field	Description
protected ItemService	itemService
protected MetadataFieldService	metadataFieldService
protected RelationshipService	relationshipService
protected RelationshipTypeService	relationshipTypeService
protected VirtualMetadataPopulator	virtualMetadataPopulator

Constructor Summary

Constructors

Constructor	Description
RelationshipMetadataServiceImpl()

Method Summary

Modifier and Type	Method	Description
protected List<RelationshipMetadataValue>	constructLatestForDiscoveryMetadataValues(Context context, String schema, String element, String qualifier, List<ItemUuidAndRelationshipId> data)	Turn the given data into a list of relation.*.latestForDiscovery virtual metadata values.
protected List<RelationshipMetadataValue>	findLatestForDiscoveryMetadataValues(Context context, Item item, EntityType itemEntityType)	Create the list of relation.*.latestForDiscovery virtual metadata values for the given item.
List<RelationshipMetadataValue>	findRelationshipMetadataValueForItemRelationship(Context context, Item item, String entityType, Relationship relationship, boolean enableVirtualMetadata)	Retrieves the list of RelationshipMetadataValue objects specific to only one Relationship of the item.
String	getEntityTypeStringFromMetadata(Item item)	Deprecated.
List<RelationshipMetadataValue>	getRelationshipMetadata(Item item, boolean enableVirtualMetadata)	This method retrieves a list of MetadataValue objects that get constructed from processing the given Item's Relationships through the config given to the VirtualMetadataPopulator

Methods inherited from class java.lang.Object

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

Field Details

relationshipService

@Autowired(required=true)
protected RelationshipService relationshipService

relationshipTypeService

@Autowired(required=true)
protected RelationshipTypeService relationshipTypeService

itemService

@Autowired(required=true)
protected ItemService itemService

virtualMetadataPopulator

@Autowired(required=true)
protected VirtualMetadataPopulator virtualMetadataPopulator

metadataFieldService

@Autowired(required=true)
protected MetadataFieldService metadataFieldService

Constructor Details

RelationshipMetadataServiceImpl

public RelationshipMetadataServiceImpl()

Method Details

getRelationshipMetadata

public List<RelationshipMetadataValue> getRelationshipMetadata(Item item,
 boolean enableVirtualMetadata)

Description copied from interface: RelationshipMetadataService

This method retrieves a list of MetadataValue objects that get constructed from processing the given Item's Relationships through the config given to the VirtualMetadataPopulator

Specified by:

getRelationshipMetadata in interface RelationshipMetadataService

Parameters:

item - The Item that will be processed through it's Relationships

enableVirtualMetadata - This parameter will determine whether the list of Relationship metadata should be populated with metadata that is being generated through the VirtualMetadataPopulator functionality or not

Returns:

The list of MetadataValue objects constructed through the Relationships

findLatestForDiscoveryMetadataValues

protected List<RelationshipMetadataValue> findLatestForDiscoveryMetadataValues(Context context,
 Item item,
 EntityType itemEntityType)
                                                                        throws SQLException

Create the list of relation.*.latestForDiscovery virtual metadata values for the given item.

Parameters:

context - the DSpace context.

item - the item.

itemEntityType - the entity type of the item.

Returns:

a list (may be empty) of metadata values of type relation.*.latestForDiscovery.

Throws:

SQLException

constructLatestForDiscoveryMetadataValues

protected List<RelationshipMetadataValue> constructLatestForDiscoveryMetadataValues(Context context,
 String schema,
 String element,
 String qualifier,
 List<ItemUuidAndRelationshipId> data)

Turn the given data into a list of relation.*.latestForDiscovery virtual metadata values.

Parameters:

context - the DSpace context.

schema - the schema for all metadata values.

element - the element for all metadata values.

qualifier - the qualifier for all metadata values.

data - a POJO containing the item uuid and relationship id.

Returns:

a list (may be empty) of metadata values of type relation.*.latestForDiscovery.

getEntityTypeStringFromMetadata

@Deprecated
public String getEntityTypeStringFromMetadata(Item item)

Deprecated.

Description copied from interface: RelationshipMetadataService

This method will retrieve the EntityType String from an item

Specified by:

getEntityTypeStringFromMetadata in interface RelationshipMetadataService

Parameters:

item - The Item for which the entityType String will be returned

Returns:

A String value indicating the entityType

findRelationshipMetadataValueForItemRelationship

public List<RelationshipMetadataValue> findRelationshipMetadataValueForItemRelationship(Context context,
 Item item,
 String entityType,
 Relationship relationship,
 boolean enableVirtualMetadata)
                                                                                 throws SQLException

Description copied from interface: RelationshipMetadataService

Retrieves the list of RelationshipMetadataValue objects specific to only one Relationship of the item. This method processes one Relationship of an Item and will return a list of RelationshipMetadataValue objects that are generated for this specific relationship for the item through the config in VirtualMetadataPopulator It returns a combination of the output of the findVirtualMetadataFromConfiguration method and the getRelationMetadataFromOtherItem method.

Specified by:

findRelationshipMetadataValueForItemRelationship in interface RelationshipMetadataService

Parameters:

context - The context

item - The item whose virtual metadata is requested

entityType - The entity type of the given item

relationship - The relationship whose virtual metadata is requested

enableVirtualMetadata - Determines whether the VirtualMetadataPopulator should be used. If false, only the relation."relationname" metadata is populated If true, fields from the spring config virtual metadata is included as well

Returns:

The list of virtual metadata values

Throws:

SQLException