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<div class="subTitle"><span class="packageLabelInType">Package</span>&nbsp;<a href="package-summary.html">org.apache.shiro.authc</a></div>
<h2 title="Interface MergableAuthenticationInfo" class="title">Interface MergableAuthenticationInfo</h2>
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<dt>All Superinterfaces:</dt>
<dd><code><a href="AuthenticationInfo.html" title="interface in org.apache.shiro.authc">AuthenticationInfo</a></code>, <code><a href="https://docs.oracle.com/javase/8/docs/api/java/io/Serializable.html?is-external=true" title="class or interface in java.io" class="externalLink">Serializable</a></code></dd>
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<dt>All Known Implementing Classes:</dt>
<dd><code><a href="SimpleAccount.html" title="class in org.apache.shiro.authc">SimpleAccount</a></code>, <code><a href="SimpleAuthenticationInfo.html" title="class in org.apache.shiro.authc">SimpleAuthenticationInfo</a></code></dd>
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<pre>public interface <a href="../../../../src-html/org/apache/shiro/authc/MergableAuthenticationInfo.html#line.35">MergableAuthenticationInfo</a>
extends <a href="AuthenticationInfo.html" title="interface in org.apache.shiro.authc">AuthenticationInfo</a></pre>
<div class="block"><p>An extension of the <a href="AuthenticationInfo.html" title="interface in org.apache.shiro.authc"><code>AuthenticationInfo</code></a> interface to be implemented by
classes that support merging with other <a href="AuthenticationInfo.html" title="interface in org.apache.shiro.authc"><code>AuthenticationInfo</code></a> instances.</p>
<p>This allows an instance of this class to be an <em>aggregation</em>, or <em>composition</em> of account data
from across multiple <code>Realm</code>s <tt>Realm</tt>s, not just one realm.</p>
<p>This is useful in a multi-realm authentication configuration - the individual <tt>AuthenticationInfo</tt>
objects obtained from each realm can be <a href="#merge(org.apache.shiro.authc.AuthenticationInfo)"><code>merged</code></a> into a single instance. This instance can then be
returned at the end of the authentication process, giving the impression of a single underlying
realm/data source.</div>
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<dt><span class="simpleTagLabel">Since:</span></dt>
<dd>0.9</dd>
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<td class="colFirst"><code>void</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#merge(org.apache.shiro.authc.AuthenticationInfo)">merge</a></span>&#8203;(<a href="AuthenticationInfo.html" title="interface in org.apache.shiro.authc">AuthenticationInfo</a>&nbsp;info)</code></th>
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<div class="block">Merges the given <a href="AuthenticationInfo.html" title="interface in org.apache.shiro.authc"><code>AuthenticationInfo</code></a> into this instance.</div>
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<h3>Methods inherited from interface&nbsp;org.apache.shiro.authc.<a href="AuthenticationInfo.html" title="interface in org.apache.shiro.authc">AuthenticationInfo</a></h3>
<code><a href="AuthenticationInfo.html#getCredentials()">getCredentials</a>, <a href="AuthenticationInfo.html#getPrincipals()">getPrincipals</a></code></li>
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<h4>merge</h4>
<pre class="methodSignature">void&nbsp;<a href="../../../../src-html/org/apache/shiro/authc/MergableAuthenticationInfo.html#line.45">merge</a>&#8203;(<a href="AuthenticationInfo.html" title="interface in org.apache.shiro.authc">AuthenticationInfo</a>&nbsp;info)</pre>
<div class="block">Merges the given <a href="AuthenticationInfo.html" title="interface in org.apache.shiro.authc"><code>AuthenticationInfo</code></a> into this instance. The specific way
that the merge occurs is up to the implementation, but typically it involves combining
the principals and credentials together in this instance. The <code>info</code> argument should
not be modified in any way.</div>
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<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>info</code> - the info that should be merged into this instance.</dd>
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