org.topbraid.shacl.expr.lib

Class FocusNodeExpression

java.lang.Object

org.topbraid.shacl.expr.AbstractNodeExpression

org.topbraid.shacl.expr.lib.FocusNodeExpression

All Implemented Interfaces:

AtomicNodeExpression, NodeExpression

public class FocusNodeExpression
extends AbstractNodeExpression
implements AtomicNodeExpression

Constructor Summary

Constructors

Constructor and Description
FocusNodeExpression(org.apache.jena.rdf.model.RDFNode thisNode)

Method Summary

Modifier and Type	Method and Description
org.apache.jena.util.iterator.ExtendedIterator<org.apache.jena.rdf.model.RDFNode>	eval(org.apache.jena.rdf.model.RDFNode focusNode, NodeExpressionContext context) Produces an iterator of value nodes for a given focus node.
String	getFunctionalSyntax() Produces a "functional" syntax used to display node expressions in a compact form.
org.apache.jena.rdf.model.Resource	getOutputShape(org.apache.jena.rdf.model.Resource contextShape) Gets the shape of the output data (if known), based on a context shape.
String	getTypeId()
void	visit(NodeExpressionVisitor visitor)

Methods inherited from class org.topbraid.shacl.expr.AbstractNodeExpression

evalReverse, getInputExpressions, getRDFNode, isReversible, toString

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.topbraid.shacl.expr.NodeExpression

evalReverse, getInputExpressions, getRDFNode, isReversible

Constructor Detail

FocusNodeExpression

public FocusNodeExpression(org.apache.jena.rdf.model.RDFNode thisNode)

Method Detail

eval

public org.apache.jena.util.iterator.ExtendedIterator<org.apache.jena.rdf.model.RDFNode> eval(org.apache.jena.rdf.model.RDFNode focusNode,
                                                                                              NodeExpressionContext context)

Description copied from interface: NodeExpression

Produces an iterator of value nodes for a given focus node.

Specified by:

eval in interface NodeExpression

Parameters:

focusNode - the focus node

context - the context

Returns:

an iterator (never null)

getFunctionalSyntax

public String getFunctionalSyntax()

Description copied from interface: NodeExpression

Produces a "functional" syntax used to display node expressions in a compact form.

Specified by:

getFunctionalSyntax in interface NodeExpression

Returns:

the functional syntax for this expression

getOutputShape

public org.apache.jena.rdf.model.Resource getOutputShape(org.apache.jena.rdf.model.Resource contextShape)

Description copied from interface: NodeExpression

Gets the shape of the output data (if known), based on a context shape. For example, for a path expression it would try to infer the output shape from the sh:class or sh:node of the property (path).

Specified by:

getOutputShape in interface NodeExpression

Overrides:

getOutputShape in class AbstractNodeExpression

Parameters:

contextShape - the shape where the evaluation would start, e.g. the node shape of the sh:values statement

Returns:

an output shape or null if unknown

getTypeId

public String getTypeId()

Specified by:

getTypeId in interface NodeExpression

visit

public void visit(NodeExpressionVisitor visitor)

Specified by:

visit in interface NodeExpression