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<td class="page-title-pattern-first-line " style="padding: 0px; border-collapse: collapse; font-family: Arial, sans-serif; font-size: 14px; padding-top: 10px"> <a href="https://issues.shibboleth.net/jira/browse/IDP" style="color: #3b73af; text-decoration: none">Identity Provider</a> / <a href="https://issues.shibboleth.net/jira/browse/IDP-1047" style="color: #3b73af; text-decoration: none"><img src="cid:jira-generated-image-avatar-102843df-f8a3-4a6e-bfe1-70d89b3405f7" height="16" width="16" border="0" align="absmiddle" alt="Task" style="vertical-align: text-bottom" /></a> <a href="https://issues.shibboleth.net/jira/browse/IDP-1047" style="color: #3b73af; text-decoration: none">IDP-1047</a>
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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.shibboleth.net/jira/browse/IDP-1047" style="color: #3b73af; text-decoration: none">Create Annotation for constructor parameter names and ParameterNameDiscoverer to understand it</a> </span>
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Issue Type:
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Affects Versions:
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3.2.0
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Assignee:
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<td style="padding: 0px; border-collapse: collapse; font: normal 14px/20px Arial, sans-serif; padding: 2px 0 2px 5px; vertical-align: top"> <a class="user-hover" rel="rdw@iay.org.uk" id="email_rdw@iay.org.uk" href="https://issues.shibboleth.net/jira/secure/ViewProfile.jspa?name=rdw%40iay.org.uk" style="color:#3b73af;; color: #3b73af; text-decoration: none">Rod Widdowson</a>
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Components:
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Configuration
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Created:
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17/Sep/16 9:42 AM
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Fix Versions:
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3.3.0
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Priority:
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Reporter:
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<td style="padding: 0px; border-collapse: collapse; font: normal 14px/20px Arial, sans-serif; padding: 2px 0 2px 5px; vertical-align: top"> <a class="user-hover" rel="rdw@iay.org.uk" id="email_rdw@iay.org.uk" href="https://issues.shibboleth.net/jira/secure/ViewProfile.jspa?name=rdw%40iay.org.uk" style="color:#3b73af;; color: #3b73af; text-decoration: none">Rod Widdowson</a>
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Original Estimate:
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2 days, 4 hours
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Remaining Estimate:
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2 days, 4 hours
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<p style="margin-top:0;margin-bottom:10px;; margin: 10px 0 0 0">See <a href="http://shibboleth.net/pipermail/dev/2016-September/008570.html" class="external-link" rel="nofollow" style="color: #3b73af; text-decoration: none">http://shibboleth.net/pipermail/dev/2016-September/008570.html</a></p>
<p style="margin-top:0;margin-bottom:10px;; margin: 10px 0 0 0">This is a cross project work item, starting in Java-support with an implementation in Spring-extensions and then a scattering of annotations across the entire stack.</p>
<p style="margin-top:0;margin-bottom:10px;; margin: 10px 0 0 0">The problem is that given</p>
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<pre class="code-java" style="margin: 10px 0 0 0; max-height: 30em; overflow: auto; white-space: pre-wrap; word-wrap: normal">
class wibble {
<span class="code-keyword" style="color: #000091">public</span> wibble(<span class="code-object" style="color: #910091">Object</span> paramtre) {...}
}
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<p style="margin-top:0;margin-bottom:10px;; margin: 10px 0 0 0">we have made 'paramtre' part of the external API, becaause someone might have said c:paramtre="foo" in a bean file.</p>
<p style="margin-top:0;margin-bottom:10px;; margin: 10px 0 0 0">If someone comes along and fixes the spelling thjen the bean file will stop working.</p>
<p style="margin-top:0;margin-bottom:10px;; margin: 10px 0 0 0">The idea is to add an annotation (so that we know not to change it), but the geneous bit (thanks <a href="https://issues.shibboleth.net/jira/secure/ViewProfile.jspa?name=serac%40vt.edu" class="user-hover" rel="serac@vt.edu" style="color: #3b73af; text-decoration: none">Marvin S Addison</a>) is that if we implement a <tt>org.springframework.core.ParameterNameDiscoverer</tt> and inject it suitably we can automate the process, so ion the above example it would be</p>
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<p style="margin-top:0;margin-bottom:10px;; margin: 10px 0 0 0">class wibble {<br /> public wibble(@ParameterName(name="parameter" Object renamed) </p> {...}
<p style="margin-top:0;margin-bottom:10px;; margin: 10px 0 0 0">}</p>
<p style="margin-top:0;margin-bottom:10px;; margin: 10px 0 0 0">The parameter name is removed from the public contract (whilst the ParameterName becomes part of it).</p>
<p style="margin-top:0;margin-bottom:10px;; margin: 10px 0 0 0">If this class inherited correctly we should be able to fall through into the default behavior - it would be nice to warn if we did do this for one of our classes.</p>
<p style="margin-top:0;margin-bottom:10px;; margin: 10px 0 0 0">Of course the problem then becomes of what to annotate, I think we need to annotate every constructor with parameters in the api trees of the IdP. OpenSAML is harder since (AIUI) the api-impl split isn't nearly as clean. I'll be asking for Brent's help there.</p>
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