This node updates triples in a Semantic Web endpoint based on the triples from the input table. It is mandatory to choose a column for "Update value".

In order to prepend namespaces it is necessary to choose Prepend in the settings dialogue.

Additionally, you have to select further columns for subject, predicate and object. If all triple columns are selected (i.e. subject, predicate, object), the table is read out row-wise. It is possible to leave out subject, predicate, object cells empty; but at least one of these cells has to be non-empty.
Always the least significant element is updated with the entry in column "Update value". For instance, the following inputs are permitted:

Subject	Predicate	Object	Update value	Which element is updated?
Peter			Martin	Subject
	Country		Home	Predicate
		Germany	Austria	Object
Peter	Country		Home	Predicate
Peter	Country	Germany	Austria	Object

If only one or two of the triple columns are picked, only these selected columns will be read-out. For instance, if you desire to update an object in a specific triple like

Subject	Predicate	Object	Update value	Which element is updated?
Peter	Country	Germany	Austria	Object

but only subject and predicate column are chosen, the update query will be interpreted as

Subject	Predicate	Object	Update value	Which element is updated?
Peter	Country		Austria	Predicate

This may yield wrong results.

Functionality is provided using the Apache Jena Framework

Options

Subject

Column containing subjects of triples.

Predicate

Column containing predicates of triples.

Object

Column containing objects of triples.

Update

Column containing update values.

Subject Namespace

If a namespace is given, the namespace of subject URIs will be changed.

Predicate Namespace

If a namespace is given, the namespace of predicate URIs will be changed.

Object Namespace

If a namespace is given, the namespace of object URIs will be changed.

Update Namespace

If a namespace is given, the namespace of object URIs will be changed.

Graph name

Column containing the names of the graphs in which the triplets should be stored.

Graph Namespace

If a namespace is given, the namespace of Graph URIs will be changed.

Global graph name

Graph name used for all update triples in the update table.

Subject Prepend

If chosen, the subject namespace will always be prepended.

Predicate Prepend

If chosen, the predicate namespace will always be prepended.

Object Prepend

If chosen, the object namespace will always be prepended.

Update Prepend

If chosen, the update namespace will always be prepended.

Graph Prepend

If chosen, the graph namespace will always be prepended.

Views

This node has no views

Workflows

• 06_SPARQL_UPDATE_QueryKNIME Hub

Links

• No links available

Developers