Generate the TNumber base-value accessors

codegen/src/main/java/ObjectLayerGenerator.java

@@ -502,13 +502,28 @@ && cleanType(fn.path("returnType").path("c").asText()).equals("Temporal *")) {
         String returnKind;
         String returnSubtype = temporalReturn(retC);
         if (resultOut != null) {
-            if (!paramCType(params, resultOut).equals("TimestampTz *")) {
-                defer(ooName, "bool+result of " + paramCType(params, resultOut) + " needs a converter");
+            String outT = paramCType(params, resultOut);
+            // A boxed return type carries the null the boolean-false case folds to; the reader pulls the
+            // value out of the single-element buffer.
+            returnType = switch (outT) {
+                case "TimestampTz *"                 -> "java.time.OffsetDateTime";
+                case "int *", "int32 *", "int32_t *" -> "Integer";
+                case "double *", "float8 *"          -> "Double";
+                case "int64 *", "int64_t *"          -> "Long";
+                default                              -> null;
+            };
+            returnSubtype = switch (outT) {
+                case "TimestampTz *"                 -> "utils.TimestampTzConverter.toOffsetDateTime(_r.getLong(0))";
+                case "int *", "int32 *", "int32_t *" -> "_r.getInt(0)";
+                case "double *", "float8 *"          -> "_r.getDouble(0)";
+                case "int64 *", "int64_t *"          -> "_r.getLong(0)";
+                default                              -> null;
+            };
+            if (returnType == null) {
+                defer(ooName, "bool+result of " + outT + " needs a converter");
                 return null;
             }
-            returnType = "java.time.OffsetDateTime";
             returnKind = "boolResult";
-            returnSubtype = "utils.TimestampTzConverter.toOffsetDateTime(_r.getLong(0))";
         } else if (returnSubtype != null) {
             returnType = "Temporal";
             returnKind = "temporal";

jmeos-core/src/test/java/types/temporal/generated/GeneratedConcreteNumberParityTest.java

@@ -95,6 +95,22 @@ void floatSurfaceMatchesTheLibrary() {
         assertEquals(GeneratedFunctions.tfloat_out(p, 6), g.out(6));
     }
 
+    @Test
+    void intValueAccessorsMatchTheLibrary() {
+        TIntSeq a = new TIntSeq("[1@2019-09-01, 3@2019-09-02, 2@2019-09-03]");
+        Pointer p = a.getInner();
+        GeneratedTInt g = genInt(a);
+
+        // valueN folds the bool+result to the base value; zero-based n reaches the one-based accessor.
+        Pointer r = GeneratedFunctions.tint_value_n(p, 2);
+        assertEquals(r == null ? null : Integer.valueOf(r.getInt(0)), g.valueN(1));
+
+        // valueAtTimestamptz folds the bool+result to the base value at a time.
+        OffsetDateTime t = OffsetDateTime.parse("2019-09-02T00:00:00Z");
+        Pointer r2 = GeneratedFunctions.tint_value_at_timestamptz(p, t, true);
+        assertEquals(r2 == null ? null : Integer.valueOf(r2.getInt(0)), g.valueAtTimestamptz(t, true));
+    }
+
     @Test
     void intValueSplitMatchesTheLibrary() {
         TIntSeq a = new TIntSeq("[1@2019-09-01, 3@2019-09-02, 5@2019-09-03]");