Avoids parsing namespace when using existing namespace

core/src/main/java/org/apache/struts2/dispatcher/PostbackResult.java

@@ -127,6 +127,8 @@ public class PostbackResult extends StrutsResultSupport {
 
         if (actionName != null) {
             actionName = conditionalParse(actionName, invocation);
+            parseLocation = false;
+
             if (namespace == null) {
                 namespace = invocation.getProxy().getNamespace();
             } else {

core/src/main/java/org/apache/struts2/dispatcher/ServletActionRedirectResult.java

@@ -164,6 +164,8 @@ public class ServletActionRedirectResult extends ServletRedirectResult implement
      */
     public void execute(ActionInvocation invocation) throws Exception {
         actionName = conditionalParse(actionName, invocation);
+        parseLocation = false;
+
         if (namespace == null) {
             namespace = invocation.getProxy().getNamespace();
         } else {

core/src/main/java/org/apache/struts2/dispatcher/StrutsResultSupport.java

@@ -118,6 +118,8 @@ public abstract class StrutsResultSupport implements Result, StrutsStatics {
     private String location;
     private String lastFinalLocation;
 
+    protected boolean parseLocation = true;
+
     public StrutsResultSupport() {
         this(null, true, false);
     }
@@ -187,7 +189,7 @@ public abstract class StrutsResultSupport implements Result, StrutsStatics {
      * @throws Exception if an error occurs while executing the result.
      */
     public void execute(ActionInvocation invocation) throws Exception {
-        lastFinalLocation = conditionalParse(location, invocation);
+        lastFinalLocation = parseLocation ? conditionalParse(location, invocation) : location;
         doExecute(lastFinalLocation, invocation);
     }
 

plugins/portlet/src/main/java/org/apache/struts2/portlet/result/PortletActionRedirectResult.java

@@ -174,6 +174,8 @@ public class PortletActionRedirectResult extends PortletResult {
 	 */
 	public void execute(ActionInvocation invocation) throws Exception {
 		actionName = conditionalParse(actionName, invocation);
+		parseLocation = false;
+
 		String portletNamespace = (String)invocation.getInvocationContext().get(PortletConstants.PORTLET_NAMESPACE);
 		if (portletMode != null) {
 			Map<PortletMode, String> namespaceMap = getNamespaceMap(invocation);

xwork-core/src/main/java/com/opensymphony/xwork2/ActionChainResult.java

@@ -197,17 +197,14 @@ public class ActionChainResult implements Result {
      * @param invocation the DefaultActionInvocation calling the action call stack
      */
     public void execute(ActionInvocation invocation) throws Exception {
-        // if the finalNamespace wasn't explicitly defined, assume the current one
-        if (this.namespace == null) {
-            this.namespace = invocation.getProxy().getNamespace();
-        }
-
         ValueStack stack = ActionContext.getContext().getValueStack();
-        String finalNamespace = TextParseUtil.translateVariables(namespace, stack);
+        String finalNamespace = this.namespace != null
+            ? TextParseUtil.translateVariables(namespace, stack)
+            : invocation.getProxy().getNamespace();
         String finalActionName = TextParseUtil.translateVariables(actionName, stack);
         String finalMethodName = this.methodName != null
-                ? TextParseUtil.translateVariables(this.methodName, stack)
-                : null;
+            ? TextParseUtil.translateVariables(this.methodName, stack)
+            : null;
 
         if (isInChainHistory(finalNamespace, finalActionName, finalMethodName)) {
             addToHistory(finalNamespace, finalActionName, finalMethodName);