[jboss-jira] [JBoss JIRA] (WFLY-11481) EL expressions that contain unnecessary parentheses fail

[Stuart Douglas (Jira)]

    [ https://issues.jboss.org/browse/WFLY-11481?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13671058#comment-13671058 ] 

Stuart Douglas commented on WFLY-11481:
---------------------------------------

I am not sure where this comes from.

> EL expressions that contain unnecessary parentheses fail
> --------------------------------------------------------
>
>                 Key: WFLY-11481
>                 URL: https://issues.jboss.org/browse/WFLY-11481
>             Project: WildFly
>          Issue Type: Bug
>            Reporter: Teresa Miyar
>            Assignee: Teresa Miyar
>            Priority: Major
>              Labels: el-expresion
>         Attachments: helloworld.war
>
>
> EL with unnecessary parentheses fail.  For instance:
> {code}
>       <c:set var = "i" scope = "session" value = "1"/>
>         <c:if test="${(i) == '1'}">                   
>          <p>i is:  <c:out value = "${i}"/><p>
>         </c:if>
> {code}
> The root exception clarified by byteman is:
> {code}
> 15:16:51,903 INFO  [stdout] (http_8080 task-1) ----------------------->ParseException.init
> 15:16:51,904 INFO  [stdout] (http_8080 task-1) com.sun.el.parser.ParseException.<init>(ParseException.java:179)
> 15:16:51,904 INFO  [stdout] (http_8080 task-1) com.sun.el.parser.ELParser.generateParseException(ELParser.java:2963)
> 15:16:51,904 INFO  [stdout] (http_8080 task-1) com.sun.el.parser.ELParser.jj_consume_token(ELParser.java:2845)
> 15:16:51,904 INFO  [stdout] (http_8080 task-1) com.sun.el.parser.ELParser.LambdaExpression(ELParser.java:295)
> 15:16:51,904 INFO  [stdout] (http_8080 task-1) com.sun.el.parser.ELParser.Assignment(ELParser.java:226)
> 15:16:51,904 INFO  [stdout] (http_8080 task-1) com.sun.el.parser.ELParser.SemiColon(ELParser.java:181)
> 15:16:51,904 INFO  [stdout] (http_8080 task-1) com.sun.el.parser.ELParser.Expression(ELParser.java:174)
> 15:16:51,904 INFO  [stdout] (http_8080 task-1) com.sun.el.parser.ELParser.DynamicExpression(ELParser.java:146)
> 15:16:51,904 INFO  [stdout] (http_8080 task-1) com.sun.el.parser.ELParser.CompositeExpression(ELParser.java:43)
> 15:16:51,904 INFO  [stdout] (http_8080 task-1) com.sun.el.lang.ExpressionBuilder.createNodeInternal(ExpressionBuilder.java:182)
> 15:16:51,904 INFO  [stdout] (http_8080 task-1) com.sun.el.lang.ExpressionBuilder.build(ExpressionBuilder.java:237)
> 15:16:51,904 INFO  [stdout] (http_8080 task-1) com.sun.el.lang.ExpressionBuilder.createValueExpression(ExpressionBuilder.java:295)
> 15:16:51,904 INFO  [stdout] (http_8080 task-1) com.sun.el.ExpressionFactoryImpl.createValueExpression(ExpressionFactoryImpl.java:112)
> 15:16:51,904 INFO  [stdout] (http_8080 task-1) org.apache.jasper.compiler.Node$JspAttribute.validateEL(Node.java:2151)
> 15:16:51,904 INFO  [stdout] (http_8080 task-1) org.apache.jasper.compiler.Validator$ValidateVisitor.getJspAttribute(Validator.java:1400)
> 15:16:51,904 INFO  [stdout] (http_8080 task-1) org.apache.jasper.compiler.Validator$ValidateVisitor.checkXmlAttributes(Validator.java:1204)
> 15:16:51,904 INFO  [stdout] (http_8080 task-1) org.apache.jasper.compiler.Validator$ValidateVisitor.visit(Validator.java:855)
> 15:16:51,904 INFO  [stdout] (http_8080 task-1) org.apache.jasper.compiler.Node$CustomTag.accept(Node.java:1535)
> 15:16:51,904 INFO  [stdout] (http_8080 task-1) org.apache.jasper.compiler.Node$Nodes.visit(Node.java:2375)
> 15:16:51,905 INFO  [stdout] (http_8080 task-1) org.apache.jasper.compiler.Node$Visitor.visitBody(Node.java:2427)
> 15:16:51,905 INFO  [stdout] (http_8080 task-1) org.apache.jasper.compiler.Node$Visitor.visit(Node.java:2433)
> 15:16:51,905 INFO  [stdout] (http_8080 task-1) org.apache.jasper.compiler.Node$Root.accept(Node.java:464)
> 15:16:51,905 INFO  [stdout] (http_8080 task-1) org.apache.jasper.compiler.Node$Nodes.visit(Node.java:2375)
> 15:16:51,905 INFO  [stdout] (http_8080 task-1) org.apache.jasper.compiler.Validator.validateExDirectives(Validator.java:1834)
> 15:16:51,905 INFO  [stdout] (http_8080 task-1) org.apache.jasper.compiler.Compiler.generateJava(Compiler.java:218)
> 15:16:51,905 INFO  [stdout] (http_8080 task-1) org.apache.jasper.compiler.Compiler.compile(Compiler.java:354)
> 15:16:51,905 INFO  [stdout] (http_8080 task-1) org.apache.jasper.compiler.Compiler.compile(Compiler.java:334)
> 15:16:51,905 INFO  [stdout] (http_8080 task-1) org.apache.jasper.compiler.Compiler.compile(Compiler.java:321)
> 15:16:51,905 INFO  [stdout] (http_8080 task-1) org.apache.jasper.JspCompilationContext.compile(JspCompilationContext.java:652)
> 15:16:51,905 INFO  [stdout] (http_8080 task-1) org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:358)
> 15:16:51,905 INFO  [stdout] (http_8080 task-1) org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:403)
> 15:16:51,905 INFO  [stdout] (http_8080 task-1) org.apache.jasper.servlet.JspServlet.service(JspServlet.java:347)
> 15:16:51,905 INFO  [stdout] (http_8080 task-1) javax.servlet.http.HttpServlet.service(HttpServlet.java:790)
> {code}
> Parser seems confused as if there's a Lamda expression to resolve.  Seems tomcat had a similar issue:
> https://bz.apache.org/bugzilla/show_bug.cgi?id=56179



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