..
  @startuml images/morpho-class-diagram.png
  
  package DataONE {
  
	  class D1Object {
	  - DataSource dataSource
	  - SystemMetadata systemMetadata
	  + D1Object()
	  + SystemMetadata getSystemMetadata()
	  + void setSystemMetadata(SystemMetadata systemMetadata)
	  + DataSource getDataSource()
	  + void setDataSource(DataSource dataSource)
	  + byte[] getData() (deprecated)
      + void setData(byte[] data) (deprecated)
	  }

	  class DataPackage {
	  - SystemMetadata systemMetadata
	  + void add(D1Object obj)
	  + boolean contains(Identifier id)
	  + D1Object get(Identifier id)
	  + ResourceMap getMap()
	  + Map<Identifier, List<Identifier>> getMetadataMap()
	  + Set<Identifier> identifiers()
	  + void insertRelationship(Identifier metadataId, List<Identifier>dataIDList)
	  + void remove(Identifier id)
	  + OutputStream serialize()
	  }
	  
  }
  
  package Morpho {
  
	  class Entity {
	  - Node entRoot
	  - boolean isDirty = false
	  + boolean isDirty()
	  + void setIsDirty(boolean isDirty)
	  }
	  
	  class EML2Beta6DataPackage {
	  }
	  
	  class EML200DataPackage {
	  }
	  
	  class MetadataObject {
	  - Document doc
	  }
	  
	  abstract AbstractDataPackage {
	  - boolean isDirty = false
	  + abstract OutputStream serialize() throws Exception
	  + boolean isDirty()
	  + void setIsDirty(boolean isDirty)
	  }
	  
	  class MorphoDataPackage {
	  + AbstractDataPackage getAbstractDataPackage()
	  }
	  
	  class FileSystemDataStore {
	  - HashMap<Identifier, File> fileIDMap
	  - String directory
	  + {static} FileSystemDataStore getInstance(String directory)
	  + File get(Identifier id) throws Exception
	  + void set(Identifier id, InputStream data) throws Exception
	  + String getDirectory()
	  + void setDirectory(String dir)
	  + List<String> getIdentifiers()
	  }
	  
	  interface DataStoreServiceInterface {
	  + MorphoDataPackage read(Identifier pid) throws Exception
	  + String save(MorphoDataPackage mdp) throws Exception
	  + void delete(MorphoDataPackage mdp) throws Exception
	  + String generateIdentifier() throws Exception
	  + boolean exists(String identifier) throws Exception
	  }
	  
	  abstract DataStoreService {
	    CONSIDER REMOVING
	  - String dataDir
	  - String cacheDir
	  - String incompleteDir
	  }
	  
	  class LocalDataStoreService {
	  - String dotMorphoDir
	  }
	  
	  class MetacatDataStoreService {
	  - String metacatURL
	  }
	  
	  class DataONEDataStoreService {
	  - MNode activeMNode;
	  + MNode getActiveMNode()
	  + void setActiveMNode(MNode activeMNode)
	  }
	  
	  class DataStoreServiceController {
	  - Map<String, DataStoreServiceInterface> dataStoreServices
	  + {static} String LOCAL
	  + {static} String METACAT
	  + {static} String DATAONE
	  + {static} String ALL
	  + DataStoreServiceController getInstance()
	  + MorphoDataPackage read(String identifier, String location) 
	  + String save(MorphoDataPackage mdp, String location)
	  + void delete(MorphoDataPackage mdp, String location)
	  + String generateIdentifier(String location)
	  + boolean exists(String identifier, String location)
	  }
	  
	  class RevisionManager {
	  - Map<String, String> obsoletes
	  - Map<String, String> obsoletedBy
	  + List<String> getAllRevisions(String identifer)
	  + String getObsoletes(String identifer)
	  + String getObsoletedBy(String identifer)
	  + void setObsoletes(String new, String old)
	  + void setObsoletedBy(String old, String new)
	  }
	  
  }
  
  D1Object <|-- Entity
  D1Object <|-- MetadataObject  
  MetadataObject <|-- AbstractDataPackage
  AbstractDataPackage <|-- EML2Beta6DataPackage
  AbstractDataPackage <|-- EML200DataPackage
  
  DataPackage <|-- MorphoDataPackage
  
  Entity "*" --o AbstractDataPackage
  D1Object "*" --o DataPackage
    
  
  'When we want to include the D1 object model in Morpho we can add this relationship
  'DataStore <|-- FileSystemDataStore
  
  
  DataStoreServiceInterface <|-- DataStoreService
  DataStoreService <|-- LocalDataStoreService
  DataStoreService <|-- MetacatDataStoreService
  DataStoreService <|-- DataONEDataStoreService 
  
  FileSystemDataStore "*" --o DataStoreService
  RevisionManager "1" --o DataStoreService
  
  DataStoreServiceController o-- "*" DataStoreServiceInterface
  
  
  @enduml
.. image:: images/morpho-class-diagram.png