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<td style="vertical-align: top;; padding: 0; 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://shibboleth.atlassian.net/browse/IDP-1869?atlOrigin=eyJpIjoiODk5ZTU5YThmMTIxNGQyNDg1M2YwN2MyZDBjNmM4YTciLCJwIjoiaiJ9" style="color: #3b73af; text-decoration: none">Re: Investigate a new IdPAttributeValue type to handle scope variables</a> </span> </td>
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<p style="margin: 10px 0 0; margin-top: 0">We’ve always explicitly defined scoped data to mean there’s a value and a scope</p>
</blockquote> <p style="margin: 10px 0 0">Fair enough but I think that this means that the code structure (scope inherit from string) is <em>marginally</em> better that the alternative I was looking at (in which it doesn’t).</p> <p style="margin: 10px 0 0">The trouble is that it boils down to :</p>
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<li>“Scoped should be like string except when isn’t” (the current case)</li>
</ul> <p style="margin: 10px 0 0"> versus </p>
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<li>“Scoped should be unlike string except when it is” (what I was proposing).</li>
</ul> <p style="margin: 10px 0 0">In the case I tripped over (<tt>AttributeValueStringMatcher</tt>) the code has no idea about scoped values and it works because in that case we want scoped to behave like string.</p> <p style="margin: 10px 0 0">So we are replacing one set of casting issues (where we need to check for Scoped because its behavior is different) with another (where we need to check for Scoped because its behavior is the same).</p> <p style="margin: 10px 0 0">The <em>correct</em> design would have been to have had an abstract “StringBearingAttributeValue” class and to derive scoped & string from that. Then we could have, from day one, designed the code so that it worked at the right level of abstraction. But that's not where we are at and it would be massively disruptive and destabilising to do that.</p> <p style="margin: 10px 0 0">Happy to be argued down but I think this means that this is a “won’t do”.</p> </td>
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