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https://issues.apache.org/jira/browse/TOMAHAWK-781?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12636287#action_12636287
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Leonardo Uribe commented on TOMAHAWK-781:
-----------------------------------------

This type of error is common when you change between versions and on some 
component a property is added. If the jsp compiled sources that generates the 
web server are not deleted throws something like that. This problem dissapear 
with tag class generation on 1.1.7. Really this is not a bug. so this issue 
should be closed as won't fix or something like that.

> Unable to find setter method for attribute: colspan
> ---------------------------------------------------
>
>                 Key: TOMAHAWK-781
>                 URL: https://issues.apache.org/jira/browse/TOMAHAWK-781
>             Project: MyFaces Tomahawk
>          Issue Type: Bug
>          Components: Columns
>    Affects Versions: 1.1.5-SNAPSHOT
>         Environment: My Faces 1.1.4
>            Reporter: K. Fred
>            Assignee: Hazem Saleh
>
> After setting colspan attribute to EL expression this exception is thrown:
> org.apache.jasper.JasperException: /body/comp/dataTable.jsp(14,1) Unable to 
> find setter method for attribute: colspan
>       at 
> org.apache.jasper.compiler.DefaultErrorHandler.jspError(DefaultErrorHandler.java:39)
>       at 
> org.apache.jasper.compiler.ErrorDispatcher.dispatch(ErrorDispatcher.java:405)
>       at 
> org.apache.jasper.compiler.ErrorDispatcher.jspError(ErrorDispatcher.java:146)
>       at 
> org.apache.jasper.compiler.Generator$GenerateVisitor.evaluateAttribute(Generator.java:2720)
>       at 
> org.apache.jasper.compiler.Generator$GenerateVisitor.generateSetters(Generator.java:2873)
>       at 
> org.apache.jasper.compiler.Generator$GenerateVisitor.generateCustomStart(Generator.java:2186)
>       at 
> org.apache.jasper.compiler.Generator$GenerateVisitor.visit(Generator.java:1685)
>       at org.apache.jasper.compiler.Node$CustomTag.accept(Node.java:1441)
>       at org.apache.jasper.compiler.Node$Nodes.visit(Node.java:2163)
>       at org.apache.jasper.compiler.Node$Visitor.visitBody(Node.java:2213)
>       at 
> org.apache.jasper.compiler.Generator$GenerateVisitor.visit(Generator.java:1705)
>       at org.apache.jasper.compiler.Node$CustomTag.accept(Node.java:1441)
>       at org.apache.jasper.compiler.Node$Nodes.visit(Node.java:2163)
>       at org.apache.jasper.compiler.Node$Visitor.visitBody(Node.java:2213)
>       at org.apache.jasper.compiler.Node$Visitor.visit(Node.java:2219)
>       at org.apache.jasper.compiler.Node$Root.accept(Node.java:456)
>       at org.apache.jasper.compiler.Node$Nodes.visit(Node.java:2163)
>       at org.apache.jasper.compiler.Generator.generate(Generator.java:3320)
>       at org.apache.jasper.compiler.Compiler.generateJava(Compiler.java:198)
>       at org.apache.jasper.compiler.Compiler.compile(Compiler.java:295)
>       at org.apache.jasper.compiler.Compiler.compile(Compiler.java:276)
>       at org.apache.jasper.compiler.Compiler.compile(Compiler.java:264)
>       at 
> org.apache.jasper.JspCompilationContext.compile(JspCompilationContext.java:563)
>       at 
> org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:305)
>       at 
> org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:314)
>       at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:264)
>       at javax.servlet.http.HttpServlet.service(HttpServlet.java:810)
>       at 
> org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:252)
>       at 
> org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
>       at 
> org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:672)
>       at 
> org.apache.catalina.core.ApplicationDispatcher.doInclude(ApplicationDispatcher.java:574)
>       at 
> org.apache.catalina.core.ApplicationDispatcher.include(ApplicationDispatcher.java:499)
>       at 
> org.apache.jasper.runtime.JspRuntimeLibrary.include(JspRuntimeLibrary.java:966)
>       at 
> org.apache.jasper.runtime.PageContextImpl.doInclude(PageContextImpl.java:631)
>       at 
> org.apache.jasper.runtime.PageContextImpl.include(PageContextImpl.java:625)
>       at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
>       at 
> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
>       at 
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
>       at java.lang.reflect.Method.invoke(Method.java:585)
>       at 
> org.apache.struts.tiles.TilesUtilImpl.doInclude(TilesUtilImpl.java:126)
>       at org.apache.struts.tiles.TilesUtil.doInclude(TilesUtil.java:149)
>       at 
> org.apache.struts.tiles.taglib.InsertTag.doInclude(InsertTag.java:761)
>       at 
> org.apache.struts.tiles.taglib.InsertTag$InsertHandler.doEndTag(InsertTag.java:893)
>       at org.apache.struts.tiles.taglib.InsertTag.doEndTag(InsertTag.java:462)
> .......

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