Add setters to JSON RPC classes

When appropriate. Some properties are accessed with reflection and
making them private makes those reflection calls fail.

References #429

(cherry picked from commit 0168ce9)

Author: acogoluegnes

src/main/java/com/rabbitmq/tools/jsonrpc/JsonRpcException.java

@@ -27,22 +27,25 @@ public class JsonRpcException extends Exception {
     /**
      * Usually the constant string, "JSONRPCError"
      */
-    private String name;
+    private final String name;
     /**
      * Error code
      */
-    private int code;
+    private final int code;
     /**
      * Error message
      */
-    private String message;
+    private final String message;
     /**
      * Error detail object - may not always be present or meaningful
      */
-    private Object error;
+    private final Object error;
 
     public JsonRpcException() {
-        // no work needed in default no-arg constructor
+        this.name = null;
+        this.code = -1;
+        this.message = null;
+        this.error = null;
     }
 
     public JsonRpcException(String detailMessage, String name, int code, String message, Object error) {

src/main/java/com/rabbitmq/tools/jsonrpc/ParameterDescription.java

@@ -65,4 +65,12 @@ public String getName() {
     public String getType() {
         return type;
     }
+
+    public void setName(String name) {
+        this.name = name;
+    }
+
+    public void setType(String type) {
+        this.type = type;
+    }
 }

src/main/java/com/rabbitmq/tools/jsonrpc/ProcedureDescription.java

@@ -155,4 +155,20 @@ public String getHelp() {
     public boolean isIdempotent() {
         return idempotent;
     }
+
+    public void setName(String name) {
+        this.name = name;
+    }
+
+    public void setSummary(String summary) {
+        this.summary = summary;
+    }
+
+    public void setHelp(String help) {
+        this.help = help;
+    }
+
+    public void setIdempotent(boolean idempotent) {
+        this.idempotent = idempotent;
+    }
 }

src/main/java/com/rabbitmq/tools/jsonrpc/ServiceDescription.java

@@ -111,4 +111,24 @@ public String getSummary() {
     public String getHelp() {
         return help;
     }
+
+    public void setName(String name) {
+        this.name = name;
+    }
+
+    public void setId(String id) {
+        this.id = id;
+    }
+
+    public void setVersion(String version) {
+        this.version = version;
+    }
+
+    public void setSummary(String summary) {
+        this.summary = summary;
+    }
+
+    public void setHelp(String help) {
+        this.help = help;
+    }
 }