org.fcrepo.kernel.services

Class DatastreamService

java.lang.Object

org.modeshape.jcr.api.JcrTools

org.fcrepo.kernel.services.RepositoryService

org.fcrepo.kernel.services.DatastreamService

All Implemented Interfaces:

org.fcrepo.jcr.FedoraJcrTypes

@Component
public class DatastreamService
extends RepositoryService

Service for creating and retrieving Datastreams without using the JCR API.

Author:

cbeer

Nested Class Summary

Nested classes/interfaces inherited from class org.modeshape.jcr.api.JcrTools

org.modeshape.jcr.api.JcrTools.BasicOperation, org.modeshape.jcr.api.JcrTools.BrowseContent, org.modeshape.jcr.api.JcrTools.CountNodes, org.modeshape.jcr.api.JcrTools.Operation, org.modeshape.jcr.api.JcrTools.PrintNodes, org.modeshape.jcr.api.JcrTools.Variable

Field Summary

Fields inherited from class org.fcrepo.kernel.services.RepositoryService

repo

Fields inherited from interface org.fcrepo.jcr.FedoraJcrTypes

CONTENT_DIGEST, CONTENT_SIZE, FCR_CONTENT, FEDORA_BINARY, FEDORA_DATASTREAM, FEDORA_OBJECT, FEDORA_RESOURCE, JCR_CREATED, JCR_CREATEDBY, JCR_LASTMODIFIED, ROOT

Constructor Summary

Constructors

Constructor and Description
DatastreamService()

Method Summary

Methods

Modifier and Type	Method and Description
Datastream	asDatastream(javax.jcr.Node node) Retrieve a Datastream instance by pid and dsid
Datastream	createDatastream(javax.jcr.Session session, String dsPath) Create a stub datastream without content
javax.jcr.Node	createDatastreamNode(javax.jcr.Session session, String dsPath, String contentType, InputStream requestBodyStream) Create a new Datastream node in the JCR store
javax.jcr.Node	createDatastreamNode(javax.jcr.Session session, String dsPath, String contentType, InputStream requestBodyStream, URI checksum) Create a new Datastream node in the JCR store
Datastream	getDatastream(javax.jcr.Session session, String path) Retrieve a Datastream instance by pid and dsid
javax.jcr.Node	getDatastreamNode(javax.jcr.Session session, String path) Retrieve the JCR node for a Datastream by pid and dsid
Collection<FixityResult>	getFixity(javax.jcr.Node resource, URI dsChecksum, long dsSize) Get the fixity results for this datastream's bitstream, and compare it against the given checksum and size.
com.hp.hpl.jena.query.Dataset	getFixityResultsModel(GraphSubjects subjects, Datastream datastream) Get the fixity results for the datastream as a RDF Dataset
Collection<FixityResult>	runFixityAndFixProblems(Datastream datastream) Run the fixity check on the datastream and attempt to automatically correct failures if additional copies of the bitstream are available
void	setLlStoreService(LowLevelStorageService llStoreService) Set the low-level storage service (if Spring didn't wire it in)
void	setStoragePolicyDecisionPoint(StoragePolicyDecisionPoint pdp) Set the storage policy decision point (if Spring didn't wire it in for us)

Methods inherited from class org.fcrepo.kernel.services.RepositoryService

backupRepository, exists, getAllNodeTypes, getNamespaceRegistryGraph, getRepositoryNamespaces, getRepositoryObjectCount, getRepositorySize, restoreRepository, searchRepository, setRepository

Methods inherited from class org.modeshape.jcr.api.JcrTools

findOrCreateChild, findOrCreateChild, findOrCreateNode, findOrCreateNode, findOrCreateNode, findOrCreateNode, getNode, getReadable, getStringValue, importContent, importContent, importContent, importContent, importContent, importContent, importContent, isDebug, print, printNode, printQuery, printQuery, printQuery, printQuery, printSubgraph, printSubgraph, printSubgraph, registerNodeTypes, removeAllChildren, removeAllChildren, repeatedlyWithSession, resourceUrl, uploadFile, uploadFile, uploadFile, uploadFileAndBlock, uploadFileAndBlock, uploadFileAndBlock, uploadFilesAndBlock, var, vars, withSession

Methods inherited from class java.lang.Object

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

Constructor Detail

DatastreamService

public DatastreamService()

Method Detail

createDatastream

public Datastream createDatastream(javax.jcr.Session session,
                          String dsPath)
                            throws javax.jcr.RepositoryException

Create a stub datastream without content

Parameters:

session -

dsPath -

Returns:

Throws:

javax.jcr.RepositoryException

createDatastreamNode

public javax.jcr.Node createDatastreamNode(javax.jcr.Session session,
                                  String dsPath,
                                  String contentType,
                                  InputStream requestBodyStream)
                                    throws javax.jcr.RepositoryException,
                                           IOException,
                                           InvalidChecksumException

Create a new Datastream node in the JCR store

Parameters:

session - the jcr session to use

dsPath - the absolute path to put the datastream

contentType - the mime-type for the requestBodyStream

requestBodyStream - binary payload for the datastream

Returns:

Throws:

javax.jcr.RepositoryException

IOException

InvalidChecksumException

createDatastreamNode

public javax.jcr.Node createDatastreamNode(javax.jcr.Session session,
                                  String dsPath,
                                  String contentType,
                                  InputStream requestBodyStream,
                                  URI checksum)
                                    throws javax.jcr.RepositoryException,
                                           IOException,
                                           InvalidChecksumException

Create a new Datastream node in the JCR store

Parameters:

session - the jcr session to use

dsPath - the absolute path to put the datastream

contentType - the mime-type for the requestBodyStream

requestBodyStream - binary payload for the datastream

checksum - the digest for the binary payload (as urn:sha1:xyz)

Returns:

Throws:

javax.jcr.RepositoryException

IOException

InvalidChecksumException

getDatastreamNode

public javax.jcr.Node getDatastreamNode(javax.jcr.Session session,
                               String path)
                                 throws javax.jcr.RepositoryException

Retrieve the JCR node for a Datastream by pid and dsid

Parameters:

path -

Returns:

Throws:

javax.jcr.RepositoryException

getDatastream

public Datastream getDatastream(javax.jcr.Session session,
                       String path)
                         throws javax.jcr.RepositoryException

Retrieve a Datastream instance by pid and dsid

Parameters:

path - jcr path to the datastream

Returns:

Throws:

javax.jcr.RepositoryException

asDatastream

public Datastream asDatastream(javax.jcr.Node node)
                        throws javax.jcr.RepositoryException

Retrieve a Datastream instance by pid and dsid

Parameters:

node - datastream node

Returns:

Throws:

javax.jcr.RepositoryException

getFixityResultsModel

public com.hp.hpl.jena.query.Dataset getFixityResultsModel(GraphSubjects subjects,
                                                  Datastream datastream)
                                                    throws javax.jcr.RepositoryException

Get the fixity results for the datastream as a RDF Dataset

Parameters:

subjects -

datastream -

Returns:

Throws:

javax.jcr.RepositoryException

runFixityAndFixProblems

public Collection<FixityResult> runFixityAndFixProblems(Datastream datastream)
                                                 throws javax.jcr.RepositoryException

Run the fixity check on the datastream and attempt to automatically correct failures if additional copies of the bitstream are available

Parameters:

datastream -

Returns:

Throws:

javax.jcr.RepositoryException

getFixity

public Collection<FixityResult> getFixity(javax.jcr.Node resource,
                                 URI dsChecksum,
                                 long dsSize)
                                   throws javax.jcr.RepositoryException

Get the fixity results for this datastream's bitstream, and compare it against the given checksum and size.

Parameters:

resource -

dsChecksum - -the checksum and algorithm represented as a URI

dsSize -

Returns:

Throws:

javax.jcr.RepositoryException

setLlStoreService

public void setLlStoreService(LowLevelStorageService llStoreService)

Set the low-level storage service (if Spring didn't wire it in)

Parameters:

llStoreService -

setStoragePolicyDecisionPoint

public void setStoragePolicyDecisionPoint(StoragePolicyDecisionPoint pdp)

Set the storage policy decision point (if Spring didn't wire it in for us)

Parameters:

pdp -