Add check for multiple WG extensions

org.hl7.fhir.r5/src/main/java/org/hl7/fhir/r5/elementmodel/Element.java

@@ -1108,6 +1108,21 @@ public class Element extends Base implements NamedItem {
     return null;
   }
 
+  public List<Element> getExtensions(String url) {
+    List<Element> list = new ArrayList<>();
+    if (children != null) {
+      for (Element child : children) {
+        if (extensionList.contains(child.getName())) {
+          String u = child.getChildValue("url");
+          if (url.equals(u)) {
+            list.add(child);
+          }
+        }
+      }
+    }
+    return list;
+  }
+
   public Base getExtensionValue(String url) {
     if (children != null) {
       for (Element child : children) {

org.hl7.fhir.utilities/src/main/java/org/hl7/fhir/utilities/i18n/I18nConstants.java

@@ -1107,4 +1107,5 @@ public class I18nConstants {
   public static final String TYPE_SPECIFIC_CHECKS_DT_XHTML_LITERAL_HREF = "TYPE_SPECIFIC_CHECKS_DT_XHTML_LITERAL_HREF";
   public static final String SM_TARGET_TYPE_UNKNOWN = "SM_TARGET_TYPE_UNKNOWN";
   public static final String XHTML_XHTML_ATTRIBUTE_XML_SPACE = "XHTML_XHTML_ATTRIBUTE_XML_SPACE";
+  public static final String VALIDATION_HL7_PUBLISHER_MULTIPLE_WGS = "VALIDATION_HL7_PUBLISHER_MULTIPLE_WGS";
 }

org.hl7.fhir.utilities/src/main/resources/Messages.properties

@@ -1137,4 +1137,5 @@ TYPE_SPECIFIC_CHECKS_DT_XHTML_UNKNOWN_HREF = Hyperlink scheme ''{3}'' in ''{0}''
 TYPE_SPECIFIC_CHECKS_DT_XHTML_LITERAL_HREF = Hyperlink scheme ''{3}'' in ''{0}'' at ''{1}'' for ''{2}'' is not a valid hyperlinkable scheme
 SM_TARGET_TYPE_UNKNOWN = The type of the target variable is not known: {0}
 XHTML_XHTML_ATTRIBUTE_XML_SPACE = The attribute 'xml:space' is legal but has a fixed value of 'preserve'. It''s use is discouraged
+VALIDATION_HL7_PUBLISHER_MULTIPLE_WGS = This resource has more than workgroup extension (http://hl7.org/fhir/StructureDefinition/structuredefinition-wg)
  

org.hl7.fhir.validation/src/main/java/org/hl7/fhir/validation/instance/InstanceValidator.java

@@ -5730,13 +5730,15 @@ public class InstanceValidator extends BaseValidator implements IResourceValidat
 
   private boolean checkPublisherConsistency(ValidationContext valContext, List<ValidationMessage> errors, Element element, NodeStack stack, boolean contained) {
 
+    boolean ok = true;
     String pub = element.getNamedChildValue("publisher", false);
+    
+    ok = rule(errors, "2024-08-15", IssueType.BUSINESSRULE, element.line(), element.col(), stack.getLiteralPath(), element.getExtensions(ToolingExtensions.EXT_WORKGROUP).size() <= 1, I18nConstants.VALIDATION_HL7_PUBLISHER_MULTIPLE_WGS) && ok;
     Base wgT = element.getExtensionValue(ToolingExtensions.EXT_WORKGROUP);
     String wg = wgT == null ? null : wgT.primitiveValue();
     String url = element.getNamedChildValue("url");
 
     if (contained && wg == null) {
-      boolean ok = true;
       Element container = valContext.getRootResource();
       if (element.hasExtension(ToolingExtensions.EXT_WORKGROUP)) {
         // container already specified the HL7 WG, so we don't need to test
@@ -5775,9 +5777,9 @@ public class InstanceValidator extends BaseValidator implements IResourceValidat
         if (rule(errors, "2023-09-15", IssueType.BUSINESSRULE, element.line(), element.col(), stack.getLiteralPath(), wgd != null, I18nConstants.VALIDATION_HL7_WG_UNKNOWN, wg)) {
           String rpub = "HL7 International / "+wgd.getName();
           if (warning(errors, "2023-09-15", IssueType.BUSINESSRULE, element.line(), element.col(), stack.getLiteralPath(), pub != null, I18nConstants.VALIDATION_HL7_PUBLISHER_MISSING, wg, rpub)) {
-            boolean ok = rpub.equals(pub);
+            ok = rpub.equals(pub) && ok;
             if (!ok && wgd.getName2() != null) {
-              ok = ("HL7 International / "+wgd.getName2()).equals(pub);
+              ok = ("HL7 International / "+wgd.getName2()).equals(pub) && ok;
               warningOrError(pub.contains("/"), errors, "2023-09-15", IssueType.BUSINESSRULE, element.line(), element.col(), stack.getLiteralPath(), ok, I18nConstants.VALIDATION_HL7_PUBLISHER_MISMATCH2, wg, rpub, "HL7 International / "+wgd.getName2(), pub);
             } else {
               warningOrError(pub.contains("/"), errors, "2023-09-15", IssueType.BUSINESSRULE, element.line(), element.col(), stack.getLiteralPath(), ok, I18nConstants.VALIDATION_HL7_PUBLISHER_MISMATCH, wg, rpub, pub);
@@ -5785,14 +5787,14 @@ public class InstanceValidator extends BaseValidator implements IResourceValidat
           }
           warning(errors, "2023-09-15", IssueType.BUSINESSRULE, element.line(), element.col(), stack.getLiteralPath(), 
               Utilities.startsWithInList( wgd.getLink(), urls), I18nConstants.VALIDATION_HL7_WG_URL, wg, wgd.getLink());
-          return true;
+          return ok;
         }      
       } else {
-        return true; // HL7 sid.
+        return ok; // HL7 sid.
       }
     }   
 
-    return false;
+    return ok;
   }
 
   private boolean statusCodesConsistent(String status, String standardsStatus) {