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<td style="vertical-align: top;; padding: 0px; border-collapse: collapse; padding-right: 5px; font-size: 20px; line-height: 30px; mso-line-height-rule: exactly" class="page-title-pattern-header-container"> <span class="page-title-pattern-header" style="font-family: Arial, sans-serif; padding: 0; font-size: 20px; line-height: 30px; mso-text-raise: 2px; mso-line-height-rule: exactly; vertical-align: middle"> <a href="https://issues.jboss.org/browse/WELD-2548" style="color: #3b73af; text-decoration: none">Re: StackOverFlow when used with EL and JSF</a> </span> </td>
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<td class="text-paragraph-pattern-container mobile-resize-text " style="padding: 0px; border-collapse: collapse; padding: 0 0 10px 0; padding-top: 10px"> <span class="diffcontext">The problem is that there is a registered bean ([coming from JSF impl|https://github.com/javaserverfaces/mojarra/blob/master/impl/src/main/java/com/sun/faces/cdi/RequestMapProducer.java]) of type {{com.sun.faces.context.RequestMap}} which is just a little more fancier {{Map}}.<br><br>One of the elements of this map (stored under key {{"org.jboss.weld.context.http.HttpRequestContext#com.sun.faces.cdi.RequestMapProducer"}} is the Map itself.<br>This OFC blows up when you try to do {{Map.toString()}} which is what using the EL expression ultimately does.<br><br></span> <span class="diffremovedchars" style="background-color:#ffe7e7;text-decoration:line-through;">Now</span> <span class="diffaddedchars" style="background-color:#ddfade;">When Weld is given the bean instance from JSF, e.g. when it is first accessed, creation process is triggered followed by storing the bean in our bean store for request scoped beans. This store is a write through cache which goes straight to {{HTTPServletRequest.setAtribute()}} - e.g.</span> <span class="diffcontext"> we</span> <span class="diffremovedchars" style="background-color:#ffe7e7;text-decoration:line-through;"> "just"</span> <span class="diffaddedchars" style="background-color:#ddfade;"> put the bean right back into the HTTP request which goes into the map.<br><br>This is essentially correct as we</span> <span class="diffcontext"> need to</span> <span class="diffremovedchars" style="background-color:#ffe7e7;text-decoration:line-through;"> figure out whos</span> <span class="diffaddedchars" style="background-color:#ddfade;"> store all beans there, this SO error</span> <span class="diffcontext"> is</span> <span class="diffremovedchars" style="background-color:#ffe7e7;text-decoration:line-through;"> populating</span> <span class="diffaddedchars" style="background-color:#ddfade;"> only because of</span> <span class="diffcontext"> this</span> <span class="diffremovedchars" style="background-color:#ffe7e7;text-decoration:line-through;"> map with itself</span> <span class="diffaddedchars" style="background-color:#ddfade;"> recursive {{toString()}} call</span> <span class="diffcontext">.</span> <span class="diffaddedchars" style="background-color:#ddfade;"><br><br>Same story should go for {{#sessionMap}} only neither the original reproducer not the one in our TS actually triggers session creation</span> <span class="diffcontext">.</span> <span class="diffaddedchars" style="background-color:#ddfade;"> We should verify that as well</span> <span class="diffcontext">.</span> </td>
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