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<title>register_namespace_alias (OpenID::Message)</title>
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<pre><span class="ruby-comment cmt"># File lib/openid/message.rb, line 78</span>
<span class="ruby-keyword kw">def</span> <span class="ruby-constant">Message</span>.<span class="ruby-identifier">register_namespace_alias</span>(<span class="ruby-identifier">namespace_uri</span>, <span class="ruby-identifier">alias_</span>)
<span class="ruby-keyword kw">if</span> <span class="ruby-ivar">@@registered_aliases</span>[<span class="ruby-identifier">alias_</span>] <span class="ruby-operator">==</span> <span class="ruby-identifier">namespace_uri</span>
<span class="ruby-keyword kw">return</span>
<span class="ruby-keyword kw">end</span>
<span class="ruby-keyword kw">if</span> <span class="ruby-ivar">@@registered_aliases</span>.<span class="ruby-identifier">values</span>.<span class="ruby-identifier">include?</span>(<span class="ruby-identifier">namespace_uri</span>)
<span class="ruby-identifier">raise</span> <span class="ruby-constant">NamespaceAliasRegistrationError</span>,
<span class="ruby-value str">'Namespace uri #{namespace_uri} already registered'</span>
<span class="ruby-keyword kw">end</span>
<span class="ruby-keyword kw">if</span> <span class="ruby-ivar">@@registered_aliases</span>.<span class="ruby-identifier">member?</span>(<span class="ruby-identifier">alias_</span>)
<span class="ruby-identifier">raise</span> <span class="ruby-constant">NamespaceAliasRegistrationError</span>,
<span class="ruby-value str">'Alias #{alias_} already registered'</span>
<span class="ruby-keyword kw">end</span>
<span class="ruby-ivar">@@registered_aliases</span>[<span class="ruby-identifier">alias_</span>] = <span class="ruby-identifier">namespace_uri</span>
<span class="ruby-keyword kw">end</span></pre>
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