From 96d769a6e23329516f668285d9fad5136e1be837 Mon Sep 17 00:00:00 2001
From: Grahame Grieve <grahameg@gmail.com>
Date: Mon, 10 Aug 2020 15:53:48 +1000
Subject: [PATCH] prevent NPEs generating patient summary

---
 .../fhir/r5/renderers/PatientRenderer.java    | 24 +++++++++++++++----
 1 file changed, 20 insertions(+), 4 deletions(-)

diff --git a/org.hl7.fhir.r5/src/main/java/org/hl7/fhir/r5/renderers/PatientRenderer.java b/org.hl7.fhir.r5/src/main/java/org/hl7/fhir/r5/renderers/PatientRenderer.java
index 577321914..abbb2f916 100644
--- a/org.hl7.fhir.r5/src/main/java/org/hl7/fhir/r5/renderers/PatientRenderer.java
+++ b/org.hl7.fhir.r5/src/main/java/org/hl7/fhir/r5/renderers/PatientRenderer.java
@@ -177,9 +177,17 @@ public class PatientRenderer extends ResourceRenderer {
     StringBuilder b = new StringBuilder();
     b.append(display(name));
     b.append(" ");
-    b.append(gender);
+    if (dob == null) {
+      b.append("??");
+    } else {
+      b.append(gender);
+    }
     b.append(" ");
-    b.append(display(dob));
+    if (dob == null) {
+      b.append("DoB Unknown");
+    } else {
+      b.append(display(dob));      
+    }
     if (id != null) {
       b.append(" ( ");      
       b.append(display(id));
@@ -191,9 +199,17 @@ public class PatientRenderer extends ResourceRenderer {
   public void describe(XhtmlNode x, HumanName name, String gender, DateType dob, Identifier id) throws UnsupportedEncodingException, IOException {
     render(x.b(), name);
     x.tx(" ");
-    x.tx(gender);
+    if (dob == null) {
+      x.tx("??");
+    } else {
+      x.tx(gender);
+    }
     x.tx(" ");
-    render(x, dob);
+    if (dob == null) {
+      x.tx("DoB Unknown");
+    } else {
+      render(x, dob);
+    }
     if (id != null) {
       x.tx(" ( ");      
       render(x, id);