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From "Lukasz Lenart (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (WW-4025) NullPointerException in OgnlTextParser.evaluate().
Date Tue, 26 Mar 2013 05:57:16 GMT

     [ https://issues.apache.org/jira/browse/WW-4025?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Lukasz Lenart updated WW-4025:
------------------------------

    Description: 
In the latest code, lukaszlenart refactored some code.  Using a recent build, I get the following
error (relevant code follows).

{noformat}
java.lang.NullPointerException
	at com.opensymphony.xwork2.util.TextParseUtil$1.evaluate(TextParseUtil.java:161)
	at com.opensymphony.xwork2.util.OgnlTextParser.evaluate(OgnlTextParser.java:50)
	at com.opensymphony.xwork2.util.TextParseUtil.translateVariables(TextParseUtil.java:172)
	at com.opensymphony.xwork2.util.TextParseUtil.translateVariables(TextParseUtil.java:127)
	at com.opensymphony.xwork2.util.TextParseUtil.translateVariables(TextParseUtil.java:71)
	at org.apache.struts2.dispatcher.StrutsResultSupport.conditionalParse(StrutsResultSupport.java:198)
	at org.apache.struts2.dispatcher.StrutsResultSupport.execute(StrutsResultSupport.java:185)
	at org.apache.struts2.dispatcher.ServletRedirectResult.execute(ServletRedirectResult.java:161)
	at com.opensymphony.xwork2.DefaultActionInvocation.executeResult(DefaultActionInvocation.java:371)
	at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:275)
	at org.apache.struts2.interceptor.debugging.DebuggingInterceptor.intercept(DebuggingInterceptor.java:256)
{noformat}

The relevant source code is:
{code} 
+        ParsedValueEvaluator ognlEval = new ParsedValueEvaluator() {
+            public Object evaluate(String parsedValue) {
+                Object o = stack.findValue(parsedValue, asType);
+                if (evaluator != null) {
+                    o = evaluator.evaluate(o.toString());
                 }
+                return o;
             }
-        }
{code}
Appears as if there is an assumption that the stack.findValue() will always return a non-null
value.

  was:
In the latest code, lukaszlenart refactored some code.  Using a recent build, I get the following
error (relevant code follows).

java.lang.NullPointerException
	at com.opensymphony.xwork2.util.TextParseUtil$1.evaluate(TextParseUtil.java:161)
	at com.opensymphony.xwork2.util.OgnlTextParser.evaluate(OgnlTextParser.java:50)
	at com.opensymphony.xwork2.util.TextParseUtil.translateVariables(TextParseUtil.java:172)
	at com.opensymphony.xwork2.util.TextParseUtil.translateVariables(TextParseUtil.java:127)
	at com.opensymphony.xwork2.util.TextParseUtil.translateVariables(TextParseUtil.java:71)
	at org.apache.struts2.dispatcher.StrutsResultSupport.conditionalParse(StrutsResultSupport.java:198)
	at org.apache.struts2.dispatcher.StrutsResultSupport.execute(StrutsResultSupport.java:185)
	at org.apache.struts2.dispatcher.ServletRedirectResult.execute(ServletRedirectResult.java:161)
	at com.opensymphony.xwork2.DefaultActionInvocation.executeResult(DefaultActionInvocation.java:371)
	at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:275)
	at org.apache.struts2.interceptor.debugging.DebuggingInterceptor.intercept(DebuggingInterceptor.java:256)

The relevant source code is:
 
+        ParsedValueEvaluator ognlEval = new ParsedValueEvaluator() {
+            public Object evaluate(String parsedValue) {
+                Object o = stack.findValue(parsedValue, asType);
+                if (evaluator != null) {
+                    o = evaluator.evaluate(o.toString());
                 }
+                return o;
             }
-        }

Appears as if there is an assumption that the stack.findValue() will always return a non-null
value.

    
> NullPointerException in OgnlTextParser.evaluate().
> --------------------------------------------------
>
>                 Key: WW-4025
>                 URL: https://issues.apache.org/jira/browse/WW-4025
>             Project: Struts 2
>          Issue Type: Bug
>          Components: Core Interceptors
>    Affects Versions: 2.3.14
>            Reporter: Christian Wolfgang Stone
>
> In the latest code, lukaszlenart refactored some code.  Using a recent build, I get the
following error (relevant code follows).
> {noformat}
> java.lang.NullPointerException
> 	at com.opensymphony.xwork2.util.TextParseUtil$1.evaluate(TextParseUtil.java:161)
> 	at com.opensymphony.xwork2.util.OgnlTextParser.evaluate(OgnlTextParser.java:50)
> 	at com.opensymphony.xwork2.util.TextParseUtil.translateVariables(TextParseUtil.java:172)
> 	at com.opensymphony.xwork2.util.TextParseUtil.translateVariables(TextParseUtil.java:127)
> 	at com.opensymphony.xwork2.util.TextParseUtil.translateVariables(TextParseUtil.java:71)
> 	at org.apache.struts2.dispatcher.StrutsResultSupport.conditionalParse(StrutsResultSupport.java:198)
> 	at org.apache.struts2.dispatcher.StrutsResultSupport.execute(StrutsResultSupport.java:185)
> 	at org.apache.struts2.dispatcher.ServletRedirectResult.execute(ServletRedirectResult.java:161)
> 	at com.opensymphony.xwork2.DefaultActionInvocation.executeResult(DefaultActionInvocation.java:371)
> 	at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:275)
> 	at org.apache.struts2.interceptor.debugging.DebuggingInterceptor.intercept(DebuggingInterceptor.java:256)
> {noformat}
> The relevant source code is:
> {code} 
> +        ParsedValueEvaluator ognlEval = new ParsedValueEvaluator() {
> +            public Object evaluate(String parsedValue) {
> +                Object o = stack.findValue(parsedValue, asType);
> +                if (evaluator != null) {
> +                    o = evaluator.evaluate(o.toString());
>                  }
> +                return o;
>              }
> -        }
> {code}
> Appears as if there is an assumption that the stack.findValue() will always return a
non-null value.

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