From 7862187ac1abafb58cb06d5cce12f6abcfef80bc Mon Sep 17 00:00:00 2001
From: Sergio-Mira <sergio.mira@swrve.com>
Date: Wed, 23 Sep 2015 18:09:19 +0100
Subject: [PATCH] Add hashCode implementations where there are none

---
 .../com/fasterxml/jackson/databind/node/BooleanNode.java     | 5 +++++
 .../java/com/fasterxml/jackson/databind/node/IntNode.java    | 2 +-
 .../com/fasterxml/jackson/databind/node/MissingNode.java     | 5 +++++
 .../java/com/fasterxml/jackson/databind/node/NullNode.java   | 5 +++++
 .../java/com/fasterxml/jackson/databind/node/ValueNode.java  | 2 ++
 5 files changed, 18 insertions(+), 1 deletion(-)

diff --git a/src/main/java/com/fasterxml/jackson/databind/node/BooleanNode.java b/src/main/java/com/fasterxml/jackson/databind/node/BooleanNode.java
index 07ff8ef498..cecd14cce9 100644
--- a/src/main/java/com/fasterxml/jackson/databind/node/BooleanNode.java
+++ b/src/main/java/com/fasterxml/jackson/databind/node/BooleanNode.java
@@ -77,6 +77,11 @@ public final void serialize(JsonGenerator jg, SerializerProvider provider)
         jg.writeBoolean(_value);
     }
 
+    @Override
+    public int hashCode() {
+        return Boolean.valueOf(_value).hashCode();
+    }
+
     @Override
     public boolean equals(Object o)
     {
diff --git a/src/main/java/com/fasterxml/jackson/databind/node/IntNode.java b/src/main/java/com/fasterxml/jackson/databind/node/IntNode.java
index eaa2172474..9ad470913e 100644
--- a/src/main/java/com/fasterxml/jackson/databind/node/IntNode.java
+++ b/src/main/java/com/fasterxml/jackson/databind/node/IntNode.java
@@ -129,5 +129,5 @@ public boolean equals(Object o)
     }
 
     @Override
-        public int hashCode() { return _value; }
+    public int hashCode() { return _value; }
 }
diff --git a/src/main/java/com/fasterxml/jackson/databind/node/MissingNode.java b/src/main/java/com/fasterxml/jackson/databind/node/MissingNode.java
index 629e6ce24c..d973538370 100644
--- a/src/main/java/com/fasterxml/jackson/databind/node/MissingNode.java
+++ b/src/main/java/com/fasterxml/jackson/databind/node/MissingNode.java
@@ -95,4 +95,9 @@ public String toString()
         // toString() should never return null
         return "";
     }
+
+    @Override
+    public int hashCode() {
+        return 0;
+    }
 }
diff --git a/src/main/java/com/fasterxml/jackson/databind/node/NullNode.java b/src/main/java/com/fasterxml/jackson/databind/node/NullNode.java
index c19fc5036f..8bada1089e 100644
--- a/src/main/java/com/fasterxml/jackson/databind/node/NullNode.java
+++ b/src/main/java/com/fasterxml/jackson/databind/node/NullNode.java
@@ -53,4 +53,9 @@ public boolean equals(Object o)
     {
         return (o == this);
     }
+
+    @Override
+    public int hashCode() {
+        return 0;
+    }
 }
diff --git a/src/main/java/com/fasterxml/jackson/databind/node/ValueNode.java b/src/main/java/com/fasterxml/jackson/databind/node/ValueNode.java
index 86eb129773..a6f5d810b1 100644
--- a/src/main/java/com/fasterxml/jackson/databind/node/ValueNode.java
+++ b/src/main/java/com/fasterxml/jackson/databind/node/ValueNode.java
@@ -45,6 +45,8 @@ public void serializeWithType(JsonGenerator jg, SerializerProvider provider,
         typeSer.writeTypeSuffixForScalar(this, jg);
     }
 
+    @Override public abstract int hashCode();
+
     /*
     /**********************************************************************
     /* Base impls for standard methods