Changeset

Creators: Sam Tunnicliffe; Ian Davis

This vocabulary defines a set of terms for describing changes to resource descriptions.

The vocabulary introduces the notion of a ChangeSet which encapsulates the delta between two versions of a resource description. In this context a resource description is the set of triples that in some way comprise a description of a resource. The delta is represented by two sets of triples: additions and removals. A ChangeSet can be used to modify a resource description by first removing all triples from the description that are in the removals set and adding the triples in the additions set.

History

2005-12-14 - first issued
2006-03-21 - editorial change by Ian Davis: Improved documentation
2006-06-23 - editorial change by Ian Davis: Fixed invalid RDF
2006-03-21 - semantic change by Ian Davis: Introduced statement property
2009-05-18 - semantic change by Ian Davis: Updated dublin core properties to new namespace

Namespace

The URI for this vocabulary is

http://purl.org/vocab/changeset/schema#

When abbreviating terms the suggested prefix is cs

Each class or property in the vocabulary has a URI constructed by appending a term name to the vocabulary URI. For example:

http://purl.org/vocab/changeset/schema#creatorName

Term Summary

Term	URI
ChangeSet	http://purl.org/vocab/changeset/schema#ChangeSet
addition	http://purl.org/vocab/changeset/schema#addition
changeReason	http://purl.org/vocab/changeset/schema#changeReason
createdDate	http://purl.org/vocab/changeset/schema#createdDate
creatorName	http://purl.org/vocab/changeset/schema#creatorName
precedingChangeSet	http://purl.org/vocab/changeset/schema#precedingChangeSet
removal	http://purl.org/vocab/changeset/schema#removal
statement	http://purl.org/vocab/changeset/schema#statement
subjectOfChange	http://purl.org/vocab/changeset/schema#subjectOfChange

Properties and Classes

ChangeSet

URI: http://purl.org/vocab/changeset/schema#ChangeSet

A class whose members are the encapsulation of a delta between two versions of a resource description. Being a member of this class implies also being a member of _:arc30f2b20. Having a statement, an addition, a removal, a subjectOfChange, a precedingChangeSet, a createdDate, a changeReason or a creatorName implies being a member of this class. Things are a member of this class if they are the value of a precedingChangeSet.

History

2005-12-14 - first issued
2006-03-21 - editorial change by Ian Davis: Improved documentation
2006-03-21 - semantic change by Ian Davis: Added property cardinality restrictions

addition

URI: http://purl.org/vocab/changeset/schema#addition

A property representing a triple to be added to the resource description. By convention the subject of the triple being added should be the same as the subjectOfChange . Having this property implies being a ChangeSet. Every value of this property is a http://www.w3.org/1999/02/22-rdf-syntax-ns#Statement. It is a sub-property of statement.

History

2005-12-14 - first issued
2006-03-21 - editorial change by Ian Davis: Added definitition and documentation
2006-03-21 - semantic change by Ian Davis: Made owl:ObjectProperty
2006-03-21 - semantic change by Ian Davis: Made a sub-property of statement

changeReason

URI: http://purl.org/vocab/changeset/schema#changeReason

A property representing a short, human readable description of the purpose for the changeset. Having this property implies being a ChangeSet. Every value of this property is a rdfs:Literal.

History

2005-12-14 - first issued
2006-03-21 - semantic change by Ian Davis: Made owl:DatatypeProperty

createdDate

URI: http://purl.org/vocab/changeset/schema#createdDate

A property representing the date that the changeset was created. The date should be in W3CDTF format . Having this property implies being a ChangeSet. It is a sub-property of dc:date.

History

2005-12-14 - first issued
2006-03-21 - semantic change by Ian Davis: Made owl:DatatypeProperty

creatorName

URI: http://purl.org/vocab/changeset/schema#creatorName

A property representing the name of the entity responsible for creating the changeset. Having this property implies being a ChangeSet. Every value of this property is a rdfs:Literal.

History

2005-12-14 - first issued
2006-03-21 - semantic change by Ian Davis: Made owl:DatatypeProperty

precedingChangeSet

URI: http://purl.org/vocab/changeset/schema#precedingChangeSet

A property representing the changeset that immediately precedes this one. This property can be used to build a history of changes to a particular resource description. The first ChangeSet in the history will have no precedingChangeSet property. Each subsequent ChangeSet added to the history references the preceding one resulting in a singly-linked list of changes. Care must be taken not to introduce cycles in the history. In systems that assume a closed world, the most recent ChangeSet for a particular resource description can be discovered by looking for the ChangeSet that is not the value of a precedingChangeSet property. Conversely, the earliest ChangeSet is the one that is not the subject of a precedingChangeSet property. Having this property implies being a ChangeSet. Every value of this property is a ChangeSet.

History

2005-12-14 - first issued
2006-03-21 - editorial change by Ian Davis: Added definitition and documentation
2006-03-21 - semantic change by Ian Davis: Made owl:ObjectProperty

removal

URI: http://purl.org/vocab/changeset/schema#removal

A property representing a triple to be removed from the resource description. By convention the subject of the triple being removed should be the same as the subjectOfChange . Having this property implies being a ChangeSet. Every value of this property is a http://www.w3.org/1999/02/22-rdf-syntax-ns#Statement. It is a sub-property of statement.

History

2005-12-14 - first issued
2006-03-21 - editorial change by Ian Davis: Added definitition and documentation
2006-03-21 - semantic change by Ian Davis: Made owl:ObjectProperty
2006-03-21 - semantic change by Ian Davis: Made a sub-property of statement

statement

URI: http://purl.org/vocab/changeset/schema#statement

A property representing a triple included in this set of changes. Having this property implies being a ChangeSet. Every value of this property is a http://www.w3.org/1999/02/22-rdf-syntax-ns#Statement.

History

2006-03-21 - first issued

subjectOfChange

URI: http://purl.org/vocab/changeset/schema#subjectOfChange

A property representing the resource to which this set of changes applies. Having this property implies being a ChangeSet. Every value of this property is a rdfs:Resource.

History

2005-12-14 - first issued
2006-03-21 - editorial change by Ian Davis: Added definitition and documentation
2006-03-21 - semantic change by Ian Davis: Made owl:ObjectProperty

Examples

Title	A Simple ChangeSet

Title	Linked ChangeSets

Title	Implementing Undo With ChangeSets

Other Information

Identifier	http://purl.org/vocab/changeset/schema-20060321
Date	2006-03-21
Version of	http://purl.org/vocab/changeset/schema#
Replaces	changeset:schema-20051214
Preferred namespace URI	http://purl.org/vocab/changeset/schema#
Preferred namespace prefix	cs