base class helper

spring-webflow/src/main/java/org/springframework/webflow/mvc/AbstractFlowHandler.java

@@ -0,0 +1,36 @@
+package org.springframework.webflow.mvc;
+
+import javax.servlet.http.HttpServletRequest;
+import javax.servlet.http.HttpServletResponse;
+
+import org.springframework.web.servlet.ModelAndView;
+import org.springframework.webflow.core.FlowException;
+import org.springframework.webflow.core.collection.AttributeMap;
+import org.springframework.webflow.core.collection.MutableAttributeMap;
+
+/**
+ * Trivial flow handler base class that simply returns null for all operations. Subclasses should extend and override
+ * which operations they need.
+ * 
+ * @author Keith Donald
+ */
+public class AbstractFlowHandler implements FlowHandler {
+
+	public String getFlowId() {
+		return null;
+	}
+
+	public MutableAttributeMap createExecutionInputMap(HttpServletRequest request) {
+		return null;
+	}
+
+	public ModelAndView handleException(FlowException e, HttpServletRequest request, HttpServletResponse response) {
+		return null;
+	}
+
+	public ModelAndView handleExecutionOutcome(String outcome, AttributeMap output, HttpServletRequest request,
+			HttpServletResponse response) {
+		return null;
+	}
+
+}