fix #125

index.js

@@ -49,7 +49,7 @@ class SHACLValidator {
    */
   validateNode(data, focusNode, shapeNode) {
     this.$data = clownface({ dataset: data, factory: this.factory })
-    this.nodeConformsToShape(focusNode, shapeNode)
+    this.nodeConformsToShape(focusNode, shapeNode, this.validationEngine)
     return this.validationEngine.getReport()
   }
 
@@ -67,16 +67,20 @@ class SHACLValidator {
   }
 
   // Exposed to be available from validation functions as `SHACL.nodeConformsToShape`
-  nodeConformsToShape(focusNode, shapeNode) {
+  nodeConformsToShape(focusNode, shapeNode, engine = this.validationEngine.clone()) {
     const shape = this.shapesGraph.getShape(shapeNode)
     try {
       this.depth++
-      const foundViolations = this.validationEngine.validateNodeAgainstShape(focusNode, shape, this.$data)
+      const foundViolations = engine.validateNodeAgainstShape(focusNode, shape, this.$data)
       return !foundViolations
     } finally {
       this.depth--
     }
   }
+
+  validateNodeAgainstShape (focusNode, shapeNode) {
+    return this.nodeConformsToShape(focusNode, shapeNode, this.validationEngine)
+  }
 }
 
 export default SHACLValidator

src/validation-engine.js

@@ -17,6 +17,10 @@ class ValidationEngine {
     this.nestedResults = {}
   }
 
+  clone () {
+    return new ValidationEngine(this.context, { maxErrors: this.maxErrors })
+  }
+
   initReport() {
     const { rdf, sh } = this.context.ns
 

src/validators.js

@@ -284,7 +284,7 @@ function validateNodeKind(context, focusNode, valueNode, constraint) {
 function validateNode(context, focusNode, valueNode, constraint) {
   const { sh } = context.ns
   const nodeNode = constraint.getParameterValue(sh.node)
-  return context.nodeConformsToShape(valueNode, nodeNode)
+  return context.validateNodeAgainstShape(valueNode, nodeNode)
 }
 
 function validateNot(context, focusNode, valueNode, constraint) {

test/data/validation-repro/repro125-data.ttl

@@ -0,0 +1,7 @@
+@prefix ex: <https://example.org/> .
+
+ex:person1 a ex:Person ; ex:address ex:address1 .
+
+ex:address1 ex:city "London" .
+
+ex:tv ex:size ex:big .

test/data/validation-repro/repro125-shapes.ttl

@@ -0,0 +1,23 @@
+@prefix sh: <http://www.w3.org/ns/shacl#> .
+@prefix ex: <https://example.org/> .
+
+ex:personShape a sh:NodeShape ;
+	sh:targetClass ex:Person ;
+	sh:property [
+		sh:path ex:address ;
+		sh:message "ex:city should be sh:IRI" ;
+		sh:node ex:cityShape
+	] .
+
+ex:cityShape 
+	sh:property [ 
+      sh:path ex:city ; 
+      sh:nodeKind sh:IRI 
+  ] .
+
+ex:sizeShape 
+	sh:targetObjectsOf ex:size ;
+	sh:or (
+        [ sh:hasValue ex:small ]
+		[ sh:hasValue ex:big ]
+	) .

test/validation_repro.js

@@ -0,0 +1,22 @@
+/* eslint-env mocha */
+import path from 'path'
+import assert from 'assert'
+import * as url from 'url'
+import SHACLValidator from '../index.js'
+import { loadDataset } from './utils.js'
+
+const __dirname = url.fileURLToPath(new URL('.', import.meta.url))
+const rootPath = path.join(__dirname, '/data/validation-repro')
+
+describe('validation repro', () => {
+  it('repro #125', async () => {
+    const data = await loadDataset(path.join(rootPath, 'repro125-data.ttl'))
+    const shapes =  await loadDataset(path.join(rootPath, 'repro125-shapes.ttl'))
+
+    const validator = new SHACLValidator(shapes)
+    const report = validator.validate(data)
+
+    assert.equal(1, report.results.length)
+    assert.equal(1, report.results[0].detail.length)
+  })
+})