Fix #1383

Author: cowtowncoder

release-notes/VERSION

@@ -15,6 +15,7 @@ Project: jackson-databind
 #1368: Problem serializing `JsonMappingException` due to addition of non-ignored
   `processor` property (added in 2.7)
  (reported, suggesed fix by Josh C)
+#1383: Problem with `@JsonCreator` with 1-arg factory-method, implicit param names
 
 2.7.7 (27-Aug-2016)
 

src/main/java/com/fasterxml/jackson/databind/deser/BasicDeserializerFactory.java

@@ -683,7 +683,11 @@ protected boolean _handleSingleArgumentConstructor(DeserializationContext ctxt,
                 if (!useProps) { // not property based but delegating
                     /*boolean added=*/ _handleSingleArgumentFactory(config, beanDesc, vchecker, intr, creators,
                             factory, isCreator);
-                    // otherwise just ignored
+                    // 23-Sep-2016, tatu: [databind#1383]: Need to also sever link to avoid possible
+                    //    later problems with "unresolved" constructor property
+                    if (argDef != null) {
+                        ((POJOPropertyBuilder) argDef).removeConstructors();
+                    }
                     continue;
                 }
                 // fall through if there's name

src/test/java/com/fasterxml/jackson/databind/creators/SingleArgCreatorTest.java

@@ -115,7 +115,30 @@ public static ExplicitFactoryBeanB valueOf(String str) {
 
         public String value() { return value; }
     }
+
+    static class XY {
+        public int x, y;
+    }
 
+    // [databind#1383]
+    static class SingleArgWithImplicit {
+        protected XY _value;
+
+        private SingleArgWithImplicit() {
+            throw new Error("Should not get called");
+        }
+        private SingleArgWithImplicit(XY v, boolean bogus) {
+            _value = v;
+        }
+
+        @JsonCreator
+        public static SingleArgWithImplicit from(XY v) {
+            return new SingleArgWithImplicit(v, true);
+        }
+
+        public XY getFoobar() { return _value; }
+    }
+
     /*
     /**********************************************************
     /* Test methods
@@ -147,7 +170,7 @@ public void testSingleImplicitlyNamedNotDelegating() throws Exception
         StringyBeanWithProps bean = mapper.readValue("{\"value\":\"x\"}", StringyBeanWithProps.class);
         assertEquals("x", bean.getValue());
     }    
-    
+
     // [databind#714]
     public void testSingleExplicitlyNamedButDelegating() throws Exception
     {
@@ -171,5 +194,18 @@ public void testExplicitFactory660b() throws Exception
         assertNotNull(bean2);
         assertEquals("def", bean2.value());
     }
+
+    // [databind#1383]
+    public void testSingleImplicitDelegating() throws Exception
+    {
+        final ObjectMapper mapper = new ObjectMapper();
+        mapper.setAnnotationIntrospector(new MyParamIntrospector("value"));
+        SingleArgWithImplicit bean = mapper.readValue(aposToQuotes("{'x':1,'y':2}"),
+                SingleArgWithImplicit.class);
+        XY v = bean.getFoobar();
+        assertNotNull(v);
+        assertEquals(1, v.x);
+        assertEquals(2, v.y);
+    }
 }