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Fedora 3.0 API
DOMS metadata objects will be stored in Fedora-commons 3.0. Fedora 3.0 is currently in beta 2, but is expected to be final by the time we release DOMS.
The API is documented here: http://www.fedora-commons.org/documentation/3.0/userdocs/index.html#webservices
The following restrictions apply:
The possibilities "PurgeDatastream" and "PurgeObject" are not allowed. Instead change the state to deleted
- setDatastreamVersionable is disallowed. The internal datastreams are always versioned.
- Do not use getNextPID, instead use the method provided from DOMS
All ingested objects, and all updates, must lead to valid objects, as defined by the data model. The exception is that objects marked as "draft" or "intermediate" in the datamodel are always considered valid.
Making a call to any API method that changes the object to a state not valid as defined by the datamodel will fail. Any call to a state-changing API-call where the object is not first set to intermediate state will fail.
Examples
Saving seven new interrelated objects to DOMS
Since the datamodel may require that all seven objects are correctly ingested and interrelated before they are valid, ingest all seven objects in intermediate state, and then publish them
- Call the method for generating DOMS PIDs seven times
- Generate 7 FoxML objects, each with the administrative state set to "intermediate"
Call API-M ingest seven times
Call API-M modifyDatastreamByValue 7 times to update the state to "published"
Updating fields and references for 8 interrelated objects
To make sure that the changes don't interfere with validity, first set the state to intermediate, then update state to published after modifications.
Call API-M modifyDatastreamByValue 8 times to update the administrative state to "intermediate"
Update datastreams and relations as needed to make the changes using addRelationsship/addDatastream/purgeRelationship/modifyDatastreamByValue/setDatastreamState
Call API-M modifyDatastreamByValue 8 times to update the administrative state to "published"
Usage of Fedora API-M and API-A
The following describes those methods of the Fedora API-M and API-A that may be called by the GUI.
Descriptions in the following were copied from the Fedora documentation at http://www.fedora-commons.org/confluence/display/FCR30/API-M.
API-M
addDatastream
Input parameters:
String pid The PID of the object.
String dsID The datastream ID (64 characters max). If null, Fedora will generate the value.
String[] altIDs Alternate identifiers for the datastream.
String dsLabel The label for the datastream.
boolean versionable Enable versioning of the datastream.
String MIMEType The mime-type of the datastream.
String formatURI The format URI of the datastream.
String dsLocation Location of managed or external datastream content.
String controlGroup One of "X", "M", "R", or "E" (Inline XML, Managed Content, Redirect, or External Referenced).
String dsState One of "A", "D", or "I" (Active, Deleted, or Inactive).
String checksumType The algorithm used to compute the checksum. One of "DEFAULT", "DISABLED", "MD5", "SHA-1", "SHA-256", "SHA-385", "SHA-512", "HAVAL", "TIGER", "WHIRLPOOL".
String checksum The value of the checksum represented as a hexadecimal string.
String logMessage A log message.
Returns:
String The datastreamID of the newly added datastream.
addRelationship
Input parameters:
Returns:
compareDatastreamChecksum
Input parameters:
Returns:
getDatastream
Input parameters:
Returns:
getDatastreams
Input parameters:
Returns:
getRelationships
Input parameters:
Returns:
ingest
Input parameters:
Returns:
modifyDatastreamByReference
Input parameters:
Returns:
modifyDatastreamByValue
Input parameters:
Returns:
modifyObject
Input parameters:
Returns:
purgeRelationship
Input parameters:
Returns:
setDatastreamState
Input parameters:
Returns:
(export)
(getDatastreamHistory)?
(getObjectXML)?