feat(plc4j/iec-60870): Slightly changed the API for the new MetaData …

…in PlcValues
apache · Sep 1, 2023 · e3b831c · e3b831c
1 parent 85aa897
commit e3b831c
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Showing 3 changed files with 6 additions and 5 deletions.
diff --git a/plc4j/api/src/main/java/org/apache/plc4x/java/api/value/PlcValue.java b/plc4j/api/src/main/java/org/apache/plc4x/java/api/value/PlcValue.java
@@ -149,7 +149,7 @@ public interface PlcValue {
 
     Map<String, ? extends PlcValue> getStruct();
 
-    Map<String, PlcValue> getMetaData();
+    Set<String> getMetaDataNames();
 
     boolean hasMetaData(String key);
 

diff --git a/plc4j/spi/src/main/java/org/apache/plc4x/java/spi/values/PlcNull.java b/plc4j/spi/src/main/java/org/apache/plc4x/java/spi/values/PlcNull.java
@@ -30,6 +30,7 @@
 import java.time.LocalDate;
 import java.time.LocalDateTime;
 import java.time.LocalTime;
+import java.util.Collections;
 import java.util.List;
 import java.util.Map;
 import java.util.Set;
@@ -272,8 +273,8 @@ public PlcValue getValue(String key) {
     }
 
     @Override
-    public Map<String, PlcValue> getMetaData() {
-        return null;
+    public Set<String> getMetaDataNames() {
+        return Collections.emptySet();
     }
 
     @Override

diff --git a/plc4j/spi/src/main/java/org/apache/plc4x/java/spi/values/PlcValueAdapter.java b/plc4j/spi/src/main/java/org/apache/plc4x/java/spi/values/PlcValueAdapter.java
@@ -276,8 +276,8 @@ public void addMetaData(String key, PlcValue value) {
     }
 
     @Override
-    public Map<String, PlcValue> getMetaData() {
-        return metaData;
+    public Set<String> getMetaDataNames() {
+        return metaData.keySet();
     }
 
     @Override