org.fcrepo.server.security.xacml.util
Class RELSRelationshipResolver

java.lang.Object
  org.fcrepo.server.security.xacml.util.RelationshipResolverBase
      org.fcrepo.server.security.xacml.util.RELSRelationshipResolver

All Implemented Interfaces:

RelationshipResolver

public class RELSRelationshipResolver
extends RelationshipResolverBase
implements RelationshipResolver

A RelationshipResolver that resolves relationships via Management.getRelationships(org.fcrepo.server.Context, String, String).

Author:

Edwin Shin

Field Summary

Fields inherited from class org.fcrepo.server.security.xacml.util.RelationshipResolverBase

childRelationships, DEFAULT_RELATIONSHIP, parentRelationships, REPOSITORY

Constructor Summary

RELSRelationshipResolver()

RELSRelationshipResolver(Map<String,String> options)

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.
protected Set<String>	getParents(String pid)
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.

Methods inherited from class org.fcrepo.server.security.xacml.util.RelationshipResolverBase

getFedoraResourceURI

Methods inherited from class java.lang.Object

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

Constructor Detail

RELSRelationshipResolver

public RELSRelationshipResolver()

RELSRelationshipResolver

public RELSRelationshipResolver(Map<String,String> options)

Method Detail

getRelationships

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

Description copied from interface: RelationshipResolver

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

Specified by:

getRelationships in interface RelationshipResolver

Returns:

Throws:

MelcoeXacmlException

getRelationships

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

Description copied from interface: RelationshipResolver

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

Specified by:

getRelationships in interface RelationshipResolver

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

buildRESTParentHierarchy

public String buildRESTParentHierarchy(String pid)
                                throws MelcoeXacmlException

Description copied from interface: RelationshipResolver

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

Specified by:

buildRESTParentHierarchy in interface RelationshipResolver

Parameters:

pid - the pid whose parents we need to find

Returns:

the REST representation of the pid and its parents

Throws:

MelcoeXacmlException

getParents

protected Set<String> getParents(String pid)
                          throws MelcoeXacmlException

Throws:

MelcoeXacmlException

getAttributesFromQuery

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

Description copied from interface: RelationshipResolver

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

Specified by:

getAttributesFromQuery in interface RelationshipResolver

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