ASK

An ASK query that returns true if the condition in the body is met by at least one result set.

AVG

Represents AVG aggregations.

Add

A SPARQL UPDATE ADD operation. Uses sp:source and sp:target to represent "from" and "to" graphs, respectively. Also sp:silent may be true.

Aggregation

Base class of aggregation types (not part of the SPARQL 1.0 standard but supported by ARQ and other engines).

all

Used in DROP and CLEAR.

Alt path

An alternative path with the union of sp:path1 and sp:path2.

arg

Abstract superproperty for the enumerated arg1, arg2 etc.

arg1

The first argument of a function call.

arg2

The second argument of a function call.

arg3

The third argument of a function call.

arg4

The forth argument of a function call.

arg5

The fifth argument of a function call. Further arguments are not common in SPARQL, therefore no sp:arg6, etc are defined here. However, they can be created if needed.

as

Points to a Variable used in an AS statement such as COUNT aggregates.

Asc

Marker to indicate ascending order.

Bind

A BIND element.

bindings

The actual bindings of a sp:Values element.

CONSTRUCT

A CONSTRUCT-type query that can be used to construct new triples from template triples (head) that use variable bindings from the match patterns (body).

COUNT

Counts the number of times a variable is used. The variable is stored in the variable property. This might be left blank to indicate COUNT(*).

Clear

An Update operation that removes all triples from a specified graph. Must specify the graph using sp:graphIRI, or sp:default, sp:named or sp:all. May have the SILENT flag, encoded using sp:silent.

Command

A shared superclass for sp:Query and sp:Update that can be used to specify that the range of property can be either one.

Create

An Update operation that creates a new empty graph with a name specified by sp:graphIRI. May have sp:silent set to true.

DESCRIBE

A DESCRIBE-type Query.

default

Used in DROP and CLEAR.

Delete

Deprecated - use sp:Modify instead. Represents a DELETE FROM (part of SPARQL UPDATE language). The graph IRIs are stored in sp:graphIRI. The template patterns to delete are stored in sp:deletePattern. The WHERE clause is represented using sp:where.

Delete data

An Update operation to delete specific triples. The graph triples are represented using sp:data, which points to an rdf:List of sp:Triples or sp:NamedGraphs.

delete pattern

Points to a list of sp:TripleTemplates and sp:NamedGraphs in a modify operation.

Delete where

An Update operation where the triples matched by the WHERE clause (sp:where) will be the triples deleted.

Desc

Marker to indicate descending order.

distinct

A marker property to indicate that a Select query is of type SELECT DISTINCT.

document

The URI of the document to load using a LOAD Update operation.

Drop

An Update operation that removes a specified graph from the Graph Store. Must specify the graph using sp:graphIRI, or sp:default, sp:named or sp:all. May have the SILENT flag, encoded using sp:silent.

Element

An abstract base class for all pattern elements.

Element group

Abstract base class of group patterns.

Element list

A list of Elements. This class is never instantiated directly as SPIN will use plain rdf:Lists to store element lists.

elements

Points to an ElementList, for example in an Optional element.

Exists

An EXISTS element group.

expression

Points to an expression, for example in a Filter or Assignment.

Filter

A constraint element that evaluates a given expression to true or false.

from

Specifies an RDF Dataset used by a Query (FROM syntax in SPARQL). Values of this property must be URI resources.

from named

Specifies a named RDF Dataset used by a Query (FROM NAMED syntax in SPARQL). Values of this property must be URI resources.

GROUP_CONCAT

Represents GROUP_CONCAT aggregations.

graph IRI

Points to graph names (IRIs) in various sp:Update operations.

graph name node

The name (URI or Variable) of a NamedGraph.

group by

Points from a Query to the list of GROUP BY expressions.

having

Points from a SELECT query to a list of HAVING expressions.

Insert

Deprecated - use sp:Modify instead. Represents a INSERT INTO (part of SPARQL UPDATE language). The graph IRIs are stored in sp:graphIRI. The template patterns to delete are stored in sp:insertPattern. The WHERE clause is represented using sp:where.

Insert data

An Update operation to insert specific triples. The graph triples are represented using sp:data, which points to an rdf:List of sp:Triples or sp:NamedGraphs.

insert pattern

Points to a list of sp:TripleTemplates or sp:NamedGraphs in a modify command.

into

The (optional) target of a LOAD Update operation.

Let

Deprecated: use sp:Bind instead. A variable assignment (LET (?<varName> := <expression>)). Not part of the SPARQL 1.0 standard, but (for example) ARQ.

limit

The LIMIT solution modifier of a Query.

Load

A LOAD Update operation. The document to load is specified using sp:document, and the (optional) target graph using sp:into.

MAX

Represents MAX aggregations.

MIN

Represents MIN aggregations.

Minus

A MINUS element group.

mod max

mod min

Mod path

A modified path such as rdfs:subClassOf*.

Modify

Represents a MODIFY (part of SPARQL UPDATE language). The graph IRIs are stored in sp:graphIRI. The template patterns are stored in sp:deletePattern and sp:insertPattern. The WHERE clause is represented using sp:where.

named

Used in DROP and CLEAR.

Named graph

A named Graph element such as GRAPH <uri> {...}.

node

Not exists

A NOT EXISTS element group.

object

An RDF Node or Variable describing the object of a triple.

offset

The OFFSET solution modifier of a Query.

Optional

An optional element in a query.

order by

Links a query with an ORDER BY clause where the values are rdf:List containing OrderByConditions or expressions. While the domain of this property is sp:Query, only Describe and Select queries can have values of it.

Order by condition

An abstract base class for ascending or descending order conditions. Instances of this class (typically bnodes) must have a value for expression to point to the actual values.

Path

The base class of SPARQL property path expressions. Paths are used by sp:TriplePath triple paths.

path

Points from a TriplePath to its path.

path1

The first child path of a property path. Used by sp:AltPath and sp:SeqPath.

path2

The second child path of a property path. Used by sp:AltPath and sp:SeqPath.

predicate

A resource or Variable describing the predicate of a triple.

Query

Abstract base class of the various types of supported queries. Common to all types of queries is that they can have a body ("WHERE clause").

query

Links a SubQuery resource with the nested Query.

reduced

A property with true to indicate that a Select query has a REDUCED flag.

result nodes

Contains the result nodes (URI resources or Variables) of a Describe query.

result variables

An rdf:List of variables that are returned by a Select query.

Reverse link path

Reverse path

A path with reversed direction.

SAMPLE

Represents SAMPLE aggregations

SELECT

A SELECT-type query that returns variable bindings as its result.

SP System class

An "artificial" root class that groups all SP classes. This makes them look much less overwhelming in UI tools. Typical end users don't need to see those classes anyway.

SP system property

An abstract base proprerty that groups together the SP system properties. Users typically don't need to see them anyway.

SPIN SPARQL Syntax

An RDF schema to syntactically represent SPARQL queries and update commands as RDF triples.

SUM

Represents sum aggregations, e.g. SELECT SUM(?varName)...

separator

Stores the separator="..." value of a GROUP_CONCAT (sp:GroupConcat) aggregation.

Seq path

A sequence of multiple paths.

Service

A SERVICE call that matches a nested sub-pattern against a SPARQL end point specified by a URI.

service URI

Used by sp:Service to specify the URI of the SPARQL end point to invoke. Must point to a URI node.

silent

source

sub path

The child path of a property path expression. This is used by ReversePath and ModPath.

Sub query

A nested SELECT query inside of an element list. The query is stored in sp:query.

subject

A resource or Variable describing the subject of a triple.

target

templates

Points to a list of TripleTemplates that form the head of a Construct query.

text

Can be attached to sp:Queries to store a textual representation of the query. This can be useful for tools that do not have a complete SPIN Syntax parser available.

Triple

A base class for TriplePattern and TripleTemplate. This basically specifies that subject, predicate and object must be present.

Triple path

Similar to a TriplePattern, but with a path expression as its predicate. For example, this can be used to express transitive sub-class relationships (?subClass rdfs:subClassOf* ?superClass).

Triple pattern

A triple pattern used in the body of a query.

Triple template

A prototypical triple used as template in the head of a Construct query. May contain variables.

Tuple

Abstract base class for things that have subject and object.

Union

A UNION group.

Update

Abstract base class to group the various SPARQL UPDATE commands.

using

using named

Values

A VALUES element. sp:varNames points to an rdf:List of strings for the variables, sp:values to an rdf:List of rdf:Lists with nodes for each variable, in the order defined by the variables list.

values

The VALUES block at the end of a query. The object may just be an untyped blank node, i.e. the sp:Values type triple is optional.

var names

The names of the variables (xsd:strings) of the variables declared for a VALUES element.

varName

The name of a Variable.

Variable

A variable mentioned in a Triple or expression. Variables are often blank nodes with the variable name stored in ts:name. Variables can also be supplied with a URI in which case the system will attempt to reuse the same variable instance across multiple query definitions.

variable

The variable of a Bind element.

where

The WHERE clause of a Query.

with