SWF-735 provide additional context to vaidation methods invoked by convention

spring-binding/src/main/java/org/springframework/binding/validation/ValidationContext.java

@@ -0,0 +1,46 @@
+/*
+ * Copyright 2008 the original author or authors.
+ *
+ * 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.springframework.binding.validation;
+
+import java.security.Principal;
+
+import org.springframework.binding.message.MessageContext;
+
+/**
+ * A context for validation events.
+ * 
+ * @author Scott Andrews
+ * @since 2.0.4
+ */
+public interface ValidationContext {
+
+	/**
+	 * Get the context for recording messages
+	 */
+	public MessageContext getMessageContext();
+
+	/**
+	 * Get the current user principal
+	 */
+	public Principal getUserPrincipal();
+
+	/**
+	 * Get the event that triggered validation
+	 */
+	public String getUserEvent();
+
+}