org.fcrepo.connector.fedora3.rest

Class RESTFedora3DataImpl

java.lang.Object

org.fcrepo.connector.fedora3.rest.RESTFedora3DataImpl

All Implemented Interfaces:

Fedora3DataInterface

public class RESTFedora3DataImpl
extends Object
implements Fedora3DataInterface

An implementation of Fedora3DataInterface that uses the REST API to access fedora content.

Author:

Michael Durbin

Constructor Summary

Constructors

Constructor and Description
RESTFedora3DataImpl(String fedoraUrl, String username, String password) Constructor with credentials necessary for a connection to fedora's REST API.

Method Summary

Methods

Modifier and Type	Method and Description
boolean	doesDatastreamExist(String pid, String dsid) Determines if an object with the given pid exists and has a datastream with the given dsid.
boolean	doesObjectExist(String pid) Determines if an object with the given pid exists in the fedora 3 repository exposed through this interface.
FedoraDatastreamRecord	getDatastream(String pid, String dsid) Gets information about a given datastream for a given pid.
FedoraObjectRecord	getObjectByPid(String pid) Gets a FedoraObjectRecord that encapsulates a summary of the object with the given pid in the fedora 3 repository exposed through this interface.
List<String>	getObjectPids(int offset, int pageSize) Gets a page of object pids that exist in the repository.
long	getSize() Gets the size (total number of objects) of the underlying fedora 3 repository.

Methods inherited from class java.lang.Object

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

Constructor Detail

RESTFedora3DataImpl

public RESTFedora3DataImpl(String fedoraUrl,
                   String username,
                   String password)
                    throws MalformedURLException,
                           com.yourmediashelf.fedora.client.FedoraClientException

Constructor with credentials necessary for a connection to fedora's REST API.

Throws:

MalformedURLException

com.yourmediashelf.fedora.client.FedoraClientException

Method Detail

getObjectByPid

public FedoraObjectRecord getObjectByPid(String pid)

Gets a FedoraObjectRecord that encapsulates a summary of the object with the given pid in the fedora 3 repository exposed through this interface.

Specified by:

getObjectByPid in interface Fedora3DataInterface

doesObjectExist

public boolean doesObjectExist(String pid)

Determines if an object with the given pid exists in the fedora 3 repository exposed through this interface.

Specified by:

doesObjectExist in interface Fedora3DataInterface

getObjectPids

public List<String> getObjectPids(int offset,
                         int pageSize)

Gets a page of object pids that exist in the repository. The current implementation relies on the following ITQL query against the resource index to fetch results.

  select     $object
    from       <#ri>
    where      $object <info:fedora/fedora-system:def/model#hasModel>
        <info:fedora/fedora-system:FedoraObject-3.0>
    order by   $object
    limit      -pageSize-
    offset     -offset-
  
 

Specified by:

getObjectPids in interface Fedora3DataInterface

getSize

public long getSize()

Gets the size (total number of objects) of the underlying fedora 3 repository. The current implementation relies on the following ITQL query against the resource index to determine repository size.

  select count(
        select     $object
        from       <#ri>
        where      $object <info:fedora/fedora-system:def/model#hasModel>
            <info:fedora/fedora-system:FedoraObject-3.0>)
    from <#ri>
    where $a $b $c
  
 

Specified by:

getSize in interface Fedora3DataInterface

getDatastream

public FedoraDatastreamRecord getDatastream(String pid,
                                   String dsid)

Gets information about a given datastream for a given pid.

Specified by:

getDatastream in interface Fedora3DataInterface

doesDatastreamExist

public boolean doesDatastreamExist(String pid,
                          String dsid)

Determines if an object with the given pid exists and has a datastream with the given dsid.

Specified by:

doesDatastreamExist in interface Fedora3DataInterface