fix a smaller issue with subvalues

if a (sub)values have same property names with should be put into the mdc,
we get an exception. also properties without the full path would be added,
but this means we have no posibility to say we needs the from a give value.

media-logging-slf4j/src/main/java/io/github/sebastiantoepfer/ddd/media/logging/slf4j/Slf4JLogEntryMedia.java

@@ -127,25 +127,19 @@ public MDCMedia withValue(final String name, final String value) {
 
             @Override
             public MDCMedia withValue(final String name, final Printable value) {
-                final MDCMedia result;
-                if (mdcNames.keySet().stream().anyMatch(mdcName -> mdcName.startsWith(String.format("%s.", name)))) {
-                    result =
-                        new MDCMedia(
-                            mdcNames,
-                            new CopyMap.MergeOperator<String, String>()
-                                .apply(mdcValues, new CopyMap<>(printValue(value).mdcValues()))
-                        );
-                } else {
-                    result = this;
-                }
-                return result;
+                return new MDCMedia(
+                    mdcNames,
+                    new CopyMap.MergeOperator<String, String>()
+                        .apply(mdcValues, new CopyMap<>(printValue(name, value).mdcValues()))
+                );
             }
 
-            private MDCMedia printValue(final Printable value) {
+            private MDCMedia printValue(final String name, final Printable value) {
                 return value.printOn(
                     mdcNames
                         .entrySet()
                         .stream()
+                        .filter(mdcName -> mdcName.getKey().startsWith(name))
                         .map(entry ->
                             Map.entry(entry.getKey().substring(entry.getKey().indexOf('.') + 1), entry.getValue())
                         )

media-logging-slf4j/src/test/java/io/github/sebastiantoepfer/ddd/media/logging/slf4j/Slf4JLogEntryMediaTest.java

@@ -137,16 +137,22 @@ void should_write_values_to_mdc_with_othername() {
                 "username",
                 "user.int",
                 "int",
-                "unser.long",
+                "user.long",
                 "long",
-                "unser.double",
+                "user.double",
                 "double",
-                "unser.b1",
+                "user.b1",
                 "true",
-                "unser.b2",
+                "user.b2",
                 "false",
-                "test",
-                "other_value"
+                "user.test",
+                "other_value",
+                "user.friend.user_id",
+                "username_of_friend",
+                "bigi",
+                "bigi",
+                "bigd",
+                "tina"
             )
         )
             .withValue(
@@ -164,7 +170,11 @@ public <T extends Media<T>> T printOn(final T media) {
                             .withValue("b2", false)
                             .withValue("col", List.of())
                             .withValue("bigi", BigInteger.ONE)
-                            .withValue("bigd", BigDecimal.TEN);
+                            .withValue("bigd", BigDecimal.TEN)
+                            .withValue(
+                                "friend",
+                                new TestPrintable(Map.of("name", "Maura", "user_id", "[email protected]"))
+                            );
                     }
                 }
             )
@@ -189,7 +199,9 @@ public <T extends Media<T>> T printOn(final T media) {
                         "true",
                         "true",
                         "false",
-                        "false"
+                        "false",
+                        "username_of_friend",
+                        "[email protected]"
                     )
                 )
             )