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The Fedora Access service defines an open Fedora's API-A is a SOAP interface for accessing digital objects. The access operations include methods to do reflection on a digital object (i.e., to discover the kinds of disseminations that are available on the object), and to request disseminations. The major function of the Fedora Access service is to fulfill a client's request for dissemination. To support disseminations, the underlying repository system must evaluate the services specified for a digital object, and figure out how to call it. The service may be internal to the repository, or it may be a web service external to the repository. The underlying repository system facilitates all external service bindings on behalf of the client, simply returning a dissemination result via the access service layer.
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Repository Access
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Methods
describeRepository
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Gets information that describes the repository.
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- RepositoryInfo** String repositoryName - The name of the Repository. Set in fedora.fcfg. Default "Fedora Repository"
- String repositoryVersion - The version of Fedora running. Fedora 3.0 returns "3.0"
- String repositoryBaseURL - The repository base url set in fedora.fcfg. Default "http://localhost:8080/fedora"
- String repositoryPIDNamespace - The prefix to use for newly generated PIDs
- String defaultExportFormat
- String OAINamespace - The oai namespace. Default "example.org"
Wiki Markup _String\[\] adminEmailList_ \- The email to the administrator. Default "bob@example.org" and "sally@example.org". Defined in fedora.fcfg.
- String samplePID - An example pid, to show how to refer to objects. "doms:100"
- String sampleOAIIdentifier - An example oai identifier, to show how to refer to records. Example: "oai:example.org:doms:100"
- String sampleSearchURL - The url to the search service for the repository. Default "http://localhost:8080/fedora/search"
- String sampleAccessURL - The url to an example object in the repository. Default "http://localhost:8080/fedora/get/demo:5"
- String sampleOAIURL - The url to an oai record. Default "http://localhost:8080/fedora/oai?verb=Identify"
Wiki Markup _String\[\] retainPIDs_ \- The list of pid prefixes, that cause the pid to not be autogenerated.
Object Access
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Methods
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findObjects
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Lists the specified fields of each object matching the given criteria.
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Wiki Markup _String\[\] resultfields_ = \["pid", "state"\]
- int maxResults = null
- FieldSearchQuery query:
Wiki Markup _Condition\[\] conditions_:
- String property: "pid"
- Operator operator: "eq"
- String value: "The pid of the object you want to find"
resumeFindObjects
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Gets the next list of results from a truncated findObjects response.
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- FieldSearchResult** ListSession listsession The information nessesary for resuming the search.
- String token: The token to be used in resumeFindObjects
- int cursor: The index of the first object in this resultlist, in the complete resultlist.
- int completeListSize: The size of the complete resultlist.
- String expirationDate: The expirationdate for the token. The last time when the search can be resumed.
Wiki Markup _ObjectFields\[\] resultlist_: the specified fields of each object matching the given criteria.
- String pid Only set if the relevant field was set in resultfields
- String label Only set if the relevant field was set in resultfields
- String state Only set if the relevant field was set in resultfields
- String ownerId Only set if the relevant field was set in resultfields
- String cDate Only set if the relevant field was set in resultfields
- String mDate Only set if the relevant field was set in resultfields
- String dcmDate Only set if the relevant field was set in resultfields
Wiki Markup _String\[\] title_ Only set if the relevant field was set in resultfields
Wiki Markup _String\[\] creator_ Only set if the relevant field was set in resultfields
Wiki Markup _String\[\] subject_ Only set if the relevant field was set in resultfields
Wiki Markup _String\[\] description_ Only set if the relevant field was set in resultfields
Wiki Markup _String\[\] publisher_ Only set if the relevant field was set in resultfields
Wiki Markup _String\[\] contributor_ Only set if the relevant field was set in resultfields
Wiki Markup _String\[\] date_ Only set if the relevant field was set in resultfields
Wiki Markup _String\[\] type_ Only set if the relevant field was set in resultfields
Wiki Markup _String\[\] format_ Only set if the relevant field was set in resultfields
Wiki Markup _String\[\] identifier_ Only set if the relevant field was set in resultfields
Wiki Markup _String\[\] source_ Only set if the relevant field was set in resultfields
Wiki Markup _String\[\] language_ Only set if the relevant field was set in resultfields
Wiki Markup _String\[\] relation_ Only set if the relevant field was set in resultfields
Wiki Markup _String\[\] coverage_ Only set if the relevant field was set in resultfields
Wiki Markup _String\[\] rights_ Only set if the relevant field was set in resultfields
getObjectHistory
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Gets a list of timestamps that correspond to modification dates of components. This currently includes changes to Datastreams and disseminators.
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Wiki Markup _String\[\]_ An array containing the list of timestamps indicating when changes were made to the object.
getObjectProfile
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Profile of an object, which includes key metadata fields and URLs for the object Dissemination Index and the object Item Index. Can be thought of as a default view of the object.
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Note:
There are two general object properties, State and OwnerID, which are not part of the ObjectProfile. The way to get these are through the findObjects method.
Datastream Access
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Methods
getDatastreamDissemination
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Gets the content of a datastream.
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- MIMETypedStream** String MIMEType The mimetype of the stream
Wiki Markup _byte\[\] stream_ The contents of the Stream
Wiki Markup _Property\[\] header_ The header will be empty, or if applicable, contain the http header as name/value pairs.
- String name
- String value
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- value
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listDatastreams
Lists the datastreams of an object.
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Wiki Markup _DatastreamDef\[\]_ A datastream definition object, containing the following values
- String ID The datastream id - "DC" for the DC datastream
- String label The datastream label
- String MIMEType The mimetype of the datastream, if any
Dissemination Access
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Methods
getDissemination
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Disseminates the content produced by executing the method specified in the service definition associated the specified digital object.
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- MIMETypedStream** String MIMEType The mimetype of the stream
Wiki Markup _byte\[\] stream_ The contents of the Stream
Wiki Markup _Property\[\] header_ The header will be empty, or if applicable, contain the http header as name/value pairs.
- String name
- String value
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listMethods
Lists all the methods that the object supports.
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Wiki Markup _ObjectMethodDef\[\]_\*\* _String PID_ The pid of the data object
- String serviceDefinitionPID The pid of the service definition object
- String methodName the name of the method
Wiki Markup _MethodParmDef\[\] methodParmDefs_ An array of the method parameters
- String parmName The name of the parameter.
- String parmType The type of the parameter. Restricted to "fedora:datastreamInputType", "fedora:userInputType" or "fedora:defaultInputType"
- String parmDefaultValue If the parmType is default, this is the value that will be used. Null if other type.
Wiki Markup _String\[\] parmDomainValues_ If the parameter can be defined by the user, these are the possible values. If Null, the parameter can take any value. Null if other type.
- boolean parmRequired False, if this parameter can be left out of a call.
- String parmLabel The label for the parameter. Can be null.
- String parmPassBy The method of passing the paramenter. Restricted to "URL_REF" (if the parameter is pass by reference - by an url) and "VALUE" (if the parameter is pass by value)
- String asOfDate The timestamp/version of the method definition
WSDL
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When running your own Fedora server, the API-A WSDL is available at /wsdl?api=API-A.
Example:
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http://localhost:8080/fedora/wsdl?api=API-A |
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The Apache Axis library also automatically provides an INCORRECT WSDL DOCUMENT at |
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