Unified handling of empty input: return always null

[maven-thymeleaf-skin] / src / main / java / de / juplo / jackson / SimpleMapper.java

diff --git a/src/main/java/de/juplo/jackson/SimpleMapper.java b/src/main/java/de/juplo/jackson/SimpleMapper.java
index d7f108c..3dd5509 100644 (file)
--- a/src/main/java/de/juplo/jackson/SimpleMapper.java
+++ b/src/main/java/de/juplo/jackson/SimpleMapper.java
@@ -5,7 +5,6 @@ import com.fasterxml.jackson.core.JsonLocation;
 import com.fasterxml.jackson.core.JsonParser;
 import com.fasterxml.jackson.core.JsonToken;
 import java.io.IOException;
-import java.util.Collections;
 import java.util.Iterator;
 import java.util.LinkedHashMap;
 import java.util.LinkedList;
@@ -15,7 +14,6 @@ import java.util.Map.Entry;
 import java.util.NoSuchElementException;
 import java.util.Spliterator;
 import static java.util.Spliterator.IMMUTABLE;
-import java.util.Spliterators;
 import java.util.function.Consumer;
 import java.util.stream.Stream;
 import java.util.stream.StreamSupport;
@@ -41,10 +39,7 @@ public abstract class SimpleMapper
     JsonToken token = parser.nextToken();
 
     if (token == null)
-    {
-      LOG.warn("empty input");
-      return Spliterators.emptySpliterator();
-    }
+      return null;
 
     if (!JsonToken.START_ARRAY.equals(token))
       fail(parser, "The root-element must be an array!");
@@ -140,10 +135,7 @@ public abstract class SimpleMapper
     JsonToken token = parser.nextToken();
 
     if (token == null)
-    {
-      LOG.warn("empty input");
-      return Spliterators.emptySpliterator();
-    }
+      return null;
 
     if (!JsonToken.START_OBJECT.equals(token))
       fail(parser, "The root-element must be an object!");
@@ -263,10 +255,7 @@ public abstract class SimpleMapper
     JsonToken token = parser.nextToken();
 
     if (token == null)
-    {
-      LOG.warn("empty input");
-      return Collections.EMPTY_LIST;
-    }
+      return null;
 
     if (!JsonToken.START_ARRAY.equals(token))
       fail(parser, "The root-element must be an array!");
@@ -284,10 +273,7 @@ public abstract class SimpleMapper
     JsonToken token = parser.nextToken();
 
     if (token == null)
-    {
-      LOG.warn("empty input");
-      return Collections.EMPTY_MAP;
-    }
+      return null;
 
     if (!JsonToken.START_OBJECT.equals(token))
       fail(parser, "The root-element must be an object!");
@@ -305,10 +291,7 @@ public abstract class SimpleMapper
     JsonToken token = parser.nextToken();
 
     if (token == null)
-    {
-      LOG.warn("empty input");
       return null;
-    }
 
     switch (token)
     {