fix lightblue-platform#120: Add literal class instead of literalRvalue

core/src/main/java/com/redhat/lightblue/client/expression/update/Literal.java

@@ -0,0 +1,39 @@
+package com.redhat.lightblue.client.expression.update;
+
+public class Literal implements RValue {
+    private final Object value;
+
+    public Literal(String value) {
+        this.value = value;
+    }
+
+    public Literal(int value) {
+        this.value = new Integer(value);
+    }
+
+    public Literal(double value) {
+        this.value = new Double(value);
+    }
+
+    public Literal(float value) {
+        this.value = new Float(value);
+    }
+
+    public Literal(long value) {
+        this.value = new Long(value);
+    }
+
+    public Literal(Object value) {
+        this.value = value;
+    }
+
+    @Override
+    public String toJson() {
+        if(value==null)
+            return null;
+        else if(value instanceof String)
+            return "\""+value+"\"";
+        else
+            return value.toString();
+    }
+}

core/src/main/java/com/redhat/lightblue/client/expression/update/LiteralRValue.java

@@ -3,6 +3,7 @@
 /**
  * created by Michael White 10/10/2014
  */
+@Deprecated
 public class LiteralRValue implements RValue {
     private final String value;