org.fcrepo.server.security.xacml.util
Interface RelationshipResolver

All Known Implementing Classes:

RelationshipResolverBase, RelationshipResolverImpl, RELSRelationshipResolver, RIRelationshipResolver

public interface RelationshipResolver

Method Summary

String	buildRESTParentHierarchy(String pid) Generates a REST based representation of an object and its parents.
Set<String>	getAttributesFromQuery(String query, String queryLang, String variable) Get attributes defined by a query.
Map<String,Set<String>>	getRelationships(String subject) Retrieves the relationships for this subject.
Map<String,Set<String>>	getRelationships(String subject, String relationship) Retrieves relationships for this subject, relationship and object.

Method Detail

getRelationships

Map<String,Set<String>> getRelationships(String subject)
                                         throws MelcoeXacmlException

Retrieves the relationships for this subject. Values for each relationship are placed in a map. Return empty map if none found

Parameters:

subject - the subject to return relationships for - either ns:pid, ns:pid/datastream or the info:fedora/ forms

Returns:

The map of relationships and values.

Throws:

MelcoeXacmlException

getRelationships

Map<String,Set<String>> getRelationships(String subject,
                                         String relationship)
                                         throws MelcoeXacmlException

Retrieves relationships for this subject, relationship and object. Return empty map if none found. Null means any.

Parameters:

subject -

relationship -

object -

Returns:

Throws:

MelcoeXacmlException

buildRESTParentHierarchy

String buildRESTParentHierarchy(String pid)
                                throws MelcoeXacmlException

Generates a REST based representation of an object and its parents. For example, given the parameter b, and if b belongs to collection a, then we will end up with /a/b

Parameters:

pid - the pid whose parents we need to find

Returns:

the REST representation of the pid and its parents

Throws:

PEPException

MelcoeXacmlException

getAttributesFromQuery

Set<String> getAttributesFromQuery(String query,
                                   String queryLang,
                                   String variable)
                                   throws MelcoeXacmlException

Get attributes defined by a query. The values returned are defined by the variable defined in the query Only distinct values are returned.

Parameters:

query - The query to run

queryLang - Language of the query - itql, sparql, spo

variable - - the output variable to return (for spo, specify "s", "p" or "o")

Returns:

Throws:

MelcoeXacmlException