Label-node for å kunne navngi trær

src/main/java/no/nav/fpsak/nare/evaluation/Operator.java

@@ -2,5 +2,5 @@
 
 public enum Operator {
 
-    AND, OR, SINGLE, NOT, COND_OR, SEQUENCE, COMPUTATIONAL_IF
+    AND, OR, SINGLE, NOT, COND_OR, SEQUENCE, COMPUTATIONAL_IF, LABEL
 }

src/main/java/no/nav/fpsak/nare/specification/LabelSpecification.java

@@ -0,0 +1,49 @@
+package no.nav.fpsak.nare.specification;
+
+import no.nav.fpsak.nare.doc.RuleDescription;
+import no.nav.fpsak.nare.evaluation.Evaluation;
+import no.nav.fpsak.nare.evaluation.Operator;
+
+/**
+ * NOT decorator, used to create a new specifcation that is the inverse (IKKE) of the given spec.
+ */
+public class LabelSpecification<T> extends AbstractSpecification<T> {
+
+    public static <V> LabelSpecification<V> label(final Specification<V> spec1, String label) {
+        return new LabelSpecification<V>(spec1, label);
+    }
+
+    private Specification<T> spec1;
+    private String label;
+
+    public LabelSpecification(final Specification<T> spec1, String label) {
+        this(spec1, null, label);
+    }
+
+    public LabelSpecification(final Specification<T> spec1, String id, String label) {
+        super(id);
+        this.spec1 = spec1;
+        this.label = label;
+    }
+
+    @Override
+    public String beskrivelse() {
+        return label;
+    }
+
+    @Override
+    public Evaluation evaluate(final T t) {
+        return spec1.evaluate(t);
+    }
+
+    @Override
+    public String identifikator() {
+        return identifikatorIkkeTom().orElseGet(() -> "(" + spec1.identifikator() + ")");
+    }
+
+    @Override
+    public RuleDescription ruleDescription() {
+        return new SpecificationRuleDescription(Operator.LABEL, identifikator(), beskrivelse(), spec1.ruleDescription());
+    }
+
+}