Added UnprocessableEntityException (for 422 status code).

README.md

@@ -84,6 +84,7 @@ Release 0.11.3-SNAPSHOT in branch 'master'
 * Issue #125 - Changed DefaultExceptionMapper to map cause for RuntimeException (not sub-classes) so all exceptions get mapped correctly from the mapping settings. Left a version, LegacyExceptionMapper, for old behavior. If you want legacy behavior, simply call server.setExceptionMapping(new LegacyExceptionMapper());
 * Upgraded to jackson-databind 2.6.0 (from 2.4.2).
 * Minor fixes due to FindBugs report. There were 11 easily fixable issues reported by FindBugs: primarily equals(), hashCode() and compareTo() implementations.
+* Added UnprocessableEntityException (for 422 status code).
 
 Release 0.11.2 - 26 Jul 2015
 ----------------------------

core/src/main/java/org/restexpress/exception/UnprocessableEntityException.java

@@ -0,0 +1,51 @@
+/*
+    Copyright 2016, Strategic Gains, Inc.
+
+	Licensed under the Apache License, Version 2.0 (the "License");
+	you may not use this file except in compliance with the License.
+	You may obtain a copy of the License at
+
+		http://www.apache.org/licenses/LICENSE-2.0
+
+	Unless required by applicable law or agreed to in writing, software
+	distributed under the License is distributed on an "AS IS" BASIS,
+	WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+	See the License for the specific language governing permissions and
+	limitations under the License.
+*/
+package org.restexpress.exception;
+
+import io.netty.handler.codec.http.HttpResponseStatus;
+
+/**
+ * Represents a 422 response code (Unprocessable Entity).
+ * 
+ * @author toddf
+ * @since Jan 15, 2016
+ */
+public class UnprocessableEntityException
+extends ServiceException
+{
+	private static final long serialVersionUID = 3297576608239532992L;
+	private static final HttpResponseStatus STATUS = HttpResponseStatus.UNPROCESSABLE_ENTITY;
+
+	public UnprocessableEntityException()
+	{
+		super(STATUS);
+	}
+
+	public UnprocessableEntityException(String message)
+	{
+		super(STATUS, message);
+	}
+
+	public UnprocessableEntityException(Throwable cause)
+	{
+		super(STATUS, cause);
+	}
+
+	public UnprocessableEntityException(String message, Throwable cause)
+	{
+		super(STATUS, message, cause);
+	}
+}