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<FONT color="green">001</FONT> /*<a name="line.1"></a>
<FONT color="green">002</FONT> * Licensed to the Apache Software Foundation (ASF) under one<a name="line.2"></a>
<FONT color="green">003</FONT> * or more contributor license agreements. See the NOTICE file<a name="line.3"></a>
<FONT color="green">004</FONT> * distributed with this work for additional information<a name="line.4"></a>
<FONT color="green">005</FONT> * regarding copyright ownership. The ASF licenses this file<a name="line.5"></a>
<FONT color="green">006</FONT> * to you under the Apache License, Version 2.0 (the<a name="line.6"></a>
<FONT color="green">007</FONT> * "License"); you may not use this file except in compliance<a name="line.7"></a>
<FONT color="green">008</FONT> * with the License. You may obtain a copy of the License at<a name="line.8"></a>
<FONT color="green">009</FONT> *<a name="line.9"></a>
<FONT color="green">010</FONT> * http://www.apache.org/licenses/LICENSE-2.0<a name="line.10"></a>
<FONT color="green">011</FONT> *<a name="line.11"></a>
<FONT color="green">012</FONT> * Unless required by applicable law or agreed to in writing,<a name="line.12"></a>
<FONT color="green">013</FONT> * software distributed under the License is distributed on an<a name="line.13"></a>
<FONT color="green">014</FONT> * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY<a name="line.14"></a>
<FONT color="green">015</FONT> * KIND, either express or implied. See the License for the<a name="line.15"></a>
<FONT color="green">016</FONT> * specific language governing permissions and limitations<a name="line.16"></a>
<FONT color="green">017</FONT> * under the License.<a name="line.17"></a>
<FONT color="green">018</FONT> */<a name="line.18"></a>
<FONT color="green">019</FONT> package org.apache.shiro.subject;<a name="line.19"></a>
<FONT color="green">020</FONT> <a name="line.20"></a>
<FONT color="green">021</FONT> import org.apache.shiro.util.CollectionUtils;<a name="line.21"></a>
<FONT color="green">022</FONT> <a name="line.22"></a>
<FONT color="green">023</FONT> import java.util.*;<a name="line.23"></a>
<FONT color="green">024</FONT> <a name="line.24"></a>
<FONT color="green">025</FONT> /**<a name="line.25"></a>
<FONT color="green">026</FONT> * Default implementation of the {@link PrincipalMap} interface.<a name="line.26"></a>
<FONT color="green">027</FONT> *<a name="line.27"></a>
<FONT color="green">028</FONT> * *EXPERIMENTAL for Shiro 1.2 - DO NOT USE YET*<a name="line.28"></a>
<FONT color="green">029</FONT> *<a name="line.29"></a>
<FONT color="green">030</FONT> * @author Les Hazlewood<a name="line.30"></a>
<FONT color="green">031</FONT> * @since 1.2<a name="line.31"></a>
<FONT color="green">032</FONT> */<a name="line.32"></a>
<FONT color="green">033</FONT> public class SimplePrincipalMap implements PrincipalMap {<a name="line.33"></a>
<FONT color="green">034</FONT> <a name="line.34"></a>
<FONT color="green">035</FONT> //Key: realm name, Value: map of principals specific to that realm<a name="line.35"></a>
<FONT color="green">036</FONT> // internal map - key: principal name, value: principal<a name="line.36"></a>
<FONT color="green">037</FONT> private Map&lt;String, Map&lt;String, Object&gt;&gt; realmPrincipals;<a name="line.37"></a>
<FONT color="green">038</FONT> <a name="line.38"></a>
<FONT color="green">039</FONT> //maintains the principals from all realms plus any that are modified via the Map modification methods<a name="line.39"></a>
<FONT color="green">040</FONT> //this ensures a fast lookup of any named principal instead of needing to iterate over<a name="line.40"></a>
<FONT color="green">041</FONT> //the realmPrincipals for each lookup.<a name="line.41"></a>
<FONT color="green">042</FONT> private Map&lt;String, Object&gt; combinedPrincipals;<a name="line.42"></a>
<FONT color="green">043</FONT> <a name="line.43"></a>
<FONT color="green">044</FONT> public SimplePrincipalMap() {<a name="line.44"></a>
<FONT color="green">045</FONT> this(null);<a name="line.45"></a>
<FONT color="green">046</FONT> }<a name="line.46"></a>
<FONT color="green">047</FONT> <a name="line.47"></a>
<FONT color="green">048</FONT> public SimplePrincipalMap(Map&lt;String, Map&lt;String, Object&gt;&gt; backingMap) {<a name="line.48"></a>
<FONT color="green">049</FONT> if (!CollectionUtils.isEmpty(backingMap)) {<a name="line.49"></a>
<FONT color="green">050</FONT> this.realmPrincipals = backingMap;<a name="line.50"></a>
<FONT color="green">051</FONT> for (Map&lt;String, Object&gt; principals : this.realmPrincipals.values()) {<a name="line.51"></a>
<FONT color="green">052</FONT> if (!CollectionUtils.isEmpty(principals) ) {<a name="line.52"></a>
<FONT color="green">053</FONT> ensureCombinedPrincipals().putAll(principals);<a name="line.53"></a>
<FONT color="green">054</FONT> }<a name="line.54"></a>
<FONT color="green">055</FONT> }<a name="line.55"></a>
<FONT color="green">056</FONT> }<a name="line.56"></a>
<FONT color="green">057</FONT> }<a name="line.57"></a>
<FONT color="green">058</FONT> <a name="line.58"></a>
<FONT color="green">059</FONT> public int size() {<a name="line.59"></a>
<FONT color="green">060</FONT> return CollectionUtils.size(this.combinedPrincipals);<a name="line.60"></a>
<FONT color="green">061</FONT> }<a name="line.61"></a>
<FONT color="green">062</FONT> <a name="line.62"></a>
<FONT color="green">063</FONT> protected Map&lt;String, Object&gt; ensureCombinedPrincipals() {<a name="line.63"></a>
<FONT color="green">064</FONT> if (this.combinedPrincipals == null) {<a name="line.64"></a>
<FONT color="green">065</FONT> this.combinedPrincipals = new HashMap&lt;String, Object&gt;();<a name="line.65"></a>
<FONT color="green">066</FONT> }<a name="line.66"></a>
<FONT color="green">067</FONT> return this.combinedPrincipals;<a name="line.67"></a>
<FONT color="green">068</FONT> }<a name="line.68"></a>
<FONT color="green">069</FONT> <a name="line.69"></a>
<FONT color="green">070</FONT> public boolean containsKey(Object o) {<a name="line.70"></a>
<FONT color="green">071</FONT> return this.combinedPrincipals != null &amp;&amp; this.combinedPrincipals.containsKey(o);<a name="line.71"></a>
<FONT color="green">072</FONT> }<a name="line.72"></a>
<FONT color="green">073</FONT> <a name="line.73"></a>
<FONT color="green">074</FONT> public boolean containsValue(Object o) {<a name="line.74"></a>
<FONT color="green">075</FONT> return this.combinedPrincipals != null &amp;&amp; this.combinedPrincipals.containsKey(o);<a name="line.75"></a>
<FONT color="green">076</FONT> }<a name="line.76"></a>
<FONT color="green">077</FONT> <a name="line.77"></a>
<FONT color="green">078</FONT> public Object get(Object o) {<a name="line.78"></a>
<FONT color="green">079</FONT> return this.combinedPrincipals != null &amp;&amp; this.combinedPrincipals.containsKey(o);<a name="line.79"></a>
<FONT color="green">080</FONT> }<a name="line.80"></a>
<FONT color="green">081</FONT> <a name="line.81"></a>
<FONT color="green">082</FONT> public Object put(String s, Object o) {<a name="line.82"></a>
<FONT color="green">083</FONT> return ensureCombinedPrincipals().put(s, o);<a name="line.83"></a>
<FONT color="green">084</FONT> }<a name="line.84"></a>
<FONT color="green">085</FONT> <a name="line.85"></a>
<FONT color="green">086</FONT> public Object remove(Object o) {<a name="line.86"></a>
<FONT color="green">087</FONT> return this.combinedPrincipals != null ? this.combinedPrincipals.remove(o) : null;<a name="line.87"></a>
<FONT color="green">088</FONT> }<a name="line.88"></a>
<FONT color="green">089</FONT> <a name="line.89"></a>
<FONT color="green">090</FONT> public void putAll(Map&lt;? extends String, ?&gt; map) {<a name="line.90"></a>
<FONT color="green">091</FONT> if (!CollectionUtils.isEmpty(map)) {<a name="line.91"></a>
<FONT color="green">092</FONT> ensureCombinedPrincipals().putAll(map);<a name="line.92"></a>
<FONT color="green">093</FONT> }<a name="line.93"></a>
<FONT color="green">094</FONT> }<a name="line.94"></a>
<FONT color="green">095</FONT> <a name="line.95"></a>
<FONT color="green">096</FONT> public Set&lt;String&gt; keySet() {<a name="line.96"></a>
<FONT color="green">097</FONT> return CollectionUtils.isEmpty(this.combinedPrincipals) ?<a name="line.97"></a>
<FONT color="green">098</FONT> Collections.&lt;String&gt;emptySet() :<a name="line.98"></a>
<FONT color="green">099</FONT> Collections.unmodifiableSet(this.combinedPrincipals.keySet());<a name="line.99"></a>
<FONT color="green">100</FONT> }<a name="line.100"></a>
<FONT color="green">101</FONT> <a name="line.101"></a>
<FONT color="green">102</FONT> public Collection&lt;Object&gt; values() {<a name="line.102"></a>
<FONT color="green">103</FONT> return CollectionUtils.isEmpty(this.combinedPrincipals) ?<a name="line.103"></a>
<FONT color="green">104</FONT> Collections.emptySet() :<a name="line.104"></a>
<FONT color="green">105</FONT> Collections.unmodifiableCollection(this.combinedPrincipals.values());<a name="line.105"></a>
<FONT color="green">106</FONT> }<a name="line.106"></a>
<FONT color="green">107</FONT> <a name="line.107"></a>
<FONT color="green">108</FONT> public Set&lt;Entry&lt;String, Object&gt;&gt; entrySet() {<a name="line.108"></a>
<FONT color="green">109</FONT> return CollectionUtils.isEmpty(this.combinedPrincipals) ?<a name="line.109"></a>
<FONT color="green">110</FONT> Collections.&lt;Entry&lt;String,Object&gt;&gt;emptySet() :<a name="line.110"></a>
<FONT color="green">111</FONT> Collections.unmodifiableSet(this.combinedPrincipals.entrySet());<a name="line.111"></a>
<FONT color="green">112</FONT> }<a name="line.112"></a>
<FONT color="green">113</FONT> <a name="line.113"></a>
<FONT color="green">114</FONT> public void clear() {<a name="line.114"></a>
<FONT color="green">115</FONT> this.realmPrincipals = null;<a name="line.115"></a>
<FONT color="green">116</FONT> this.combinedPrincipals = null;<a name="line.116"></a>
<FONT color="green">117</FONT> }<a name="line.117"></a>
<FONT color="green">118</FONT> <a name="line.118"></a>
<FONT color="green">119</FONT> public Object getPrimaryPrincipal() {<a name="line.119"></a>
<FONT color="green">120</FONT> //heuristic - just use the first one we come across:<a name="line.120"></a>
<FONT color="green">121</FONT> return !CollectionUtils.isEmpty(this.combinedPrincipals) ?<a name="line.121"></a>
<FONT color="green">122</FONT> this.combinedPrincipals.values().iterator().next() :<a name="line.122"></a>
<FONT color="green">123</FONT> null;<a name="line.123"></a>
<FONT color="green">124</FONT> }<a name="line.124"></a>
<FONT color="green">125</FONT> <a name="line.125"></a>
<FONT color="green">126</FONT> public &lt;T&gt; T oneByType(Class&lt;T&gt; type) {<a name="line.126"></a>
<FONT color="green">127</FONT> if (CollectionUtils.isEmpty(this.combinedPrincipals)) {<a name="line.127"></a>
<FONT color="green">128</FONT> return null;<a name="line.128"></a>
<FONT color="green">129</FONT> }<a name="line.129"></a>
<FONT color="green">130</FONT> for( Object value : this.combinedPrincipals.values()) {<a name="line.130"></a>
<FONT color="green">131</FONT> if (type.isInstance(value) ) {<a name="line.131"></a>
<FONT color="green">132</FONT> return type.cast(value);<a name="line.132"></a>
<FONT color="green">133</FONT> }<a name="line.133"></a>
<FONT color="green">134</FONT> }<a name="line.134"></a>
<FONT color="green">135</FONT> return null;<a name="line.135"></a>
<FONT color="green">136</FONT> }<a name="line.136"></a>
<FONT color="green">137</FONT> <a name="line.137"></a>
<FONT color="green">138</FONT> public &lt;T&gt; Collection&lt;T&gt; byType(Class&lt;T&gt; type) {<a name="line.138"></a>
<FONT color="green">139</FONT> if (CollectionUtils.isEmpty(this.combinedPrincipals)) {<a name="line.139"></a>
<FONT color="green">140</FONT> return Collections.emptySet();<a name="line.140"></a>
<FONT color="green">141</FONT> }<a name="line.141"></a>
<FONT color="green">142</FONT> Collection&lt;T&gt; instances = null;<a name="line.142"></a>
<FONT color="green">143</FONT> for( Object value : this.combinedPrincipals.values()) {<a name="line.143"></a>
<FONT color="green">144</FONT> if (type.isInstance(value) ) {<a name="line.144"></a>
<FONT color="green">145</FONT> if (instances == null) {<a name="line.145"></a>
<FONT color="green">146</FONT> instances = new ArrayList&lt;T&gt;();<a name="line.146"></a>
<FONT color="green">147</FONT> }<a name="line.147"></a>
<FONT color="green">148</FONT> instances.add(type.cast(value));<a name="line.148"></a>
<FONT color="green">149</FONT> }<a name="line.149"></a>
<FONT color="green">150</FONT> }<a name="line.150"></a>
<FONT color="green">151</FONT> return instances != null ? instances : Collections.&lt;T&gt;emptyList();<a name="line.151"></a>
<FONT color="green">152</FONT> }<a name="line.152"></a>
<FONT color="green">153</FONT> <a name="line.153"></a>
<FONT color="green">154</FONT> public List asList() {<a name="line.154"></a>
<FONT color="green">155</FONT> if (CollectionUtils.isEmpty(this.combinedPrincipals)) {<a name="line.155"></a>
<FONT color="green">156</FONT> return Collections.emptyList();<a name="line.156"></a>
<FONT color="green">157</FONT> }<a name="line.157"></a>
<FONT color="green">158</FONT> List&lt;Object&gt; list = new ArrayList&lt;Object&gt;(this.combinedPrincipals.size());<a name="line.158"></a>
<FONT color="green">159</FONT> list.addAll(this.combinedPrincipals.values());<a name="line.159"></a>
<FONT color="green">160</FONT> return list;<a name="line.160"></a>
<FONT color="green">161</FONT> }<a name="line.161"></a>
<FONT color="green">162</FONT> <a name="line.162"></a>
<FONT color="green">163</FONT> public Set asSet() {<a name="line.163"></a>
<FONT color="green">164</FONT> if (CollectionUtils.isEmpty(this.combinedPrincipals)) {<a name="line.164"></a>
<FONT color="green">165</FONT> return Collections.emptySet();<a name="line.165"></a>
<FONT color="green">166</FONT> }<a name="line.166"></a>
<FONT color="green">167</FONT> Set&lt;Object&gt; set = new HashSet&lt;Object&gt;(this.combinedPrincipals.size());<a name="line.167"></a>
<FONT color="green">168</FONT> set.addAll(this.combinedPrincipals.values());<a name="line.168"></a>
<FONT color="green">169</FONT> return set;<a name="line.169"></a>
<FONT color="green">170</FONT> }<a name="line.170"></a>
<FONT color="green">171</FONT> <a name="line.171"></a>
<FONT color="green">172</FONT> public Collection fromRealm(String realmName) {<a name="line.172"></a>
<FONT color="green">173</FONT> if (CollectionUtils.isEmpty(this.realmPrincipals)) {<a name="line.173"></a>
<FONT color="green">174</FONT> return Collections.emptySet();<a name="line.174"></a>
<FONT color="green">175</FONT> }<a name="line.175"></a>
<FONT color="green">176</FONT> Map&lt;String,Object&gt; principals = this.realmPrincipals.get(realmName);<a name="line.176"></a>
<FONT color="green">177</FONT> if (CollectionUtils.isEmpty(principals)) {<a name="line.177"></a>
<FONT color="green">178</FONT> return Collections.emptySet();<a name="line.178"></a>
<FONT color="green">179</FONT> }<a name="line.179"></a>
<FONT color="green">180</FONT> return Collections.unmodifiableCollection(principals.values());<a name="line.180"></a>
<FONT color="green">181</FONT> }<a name="line.181"></a>
<FONT color="green">182</FONT> <a name="line.182"></a>
<FONT color="green">183</FONT> public Set&lt;String&gt; getRealmNames() {<a name="line.183"></a>
<FONT color="green">184</FONT> if (CollectionUtils.isEmpty(this.realmPrincipals)) {<a name="line.184"></a>
<FONT color="green">185</FONT> return Collections.emptySet();<a name="line.185"></a>
<FONT color="green">186</FONT> }<a name="line.186"></a>
<FONT color="green">187</FONT> return Collections.unmodifiableSet(this.realmPrincipals.keySet());<a name="line.187"></a>
<FONT color="green">188</FONT> }<a name="line.188"></a>
<FONT color="green">189</FONT> <a name="line.189"></a>
<FONT color="green">190</FONT> public boolean isEmpty() {<a name="line.190"></a>
<FONT color="green">191</FONT> return CollectionUtils.isEmpty(this.combinedPrincipals);<a name="line.191"></a>
<FONT color="green">192</FONT> }<a name="line.192"></a>
<FONT color="green">193</FONT> <a name="line.193"></a>
<FONT color="green">194</FONT> public Iterator iterator() {<a name="line.194"></a>
<FONT color="green">195</FONT> return asList().iterator();<a name="line.195"></a>
<FONT color="green">196</FONT> }<a name="line.196"></a>
<FONT color="green">197</FONT> <a name="line.197"></a>
<FONT color="green">198</FONT> public Map&lt;String, Object&gt; getRealmPrincipals(String name) {<a name="line.198"></a>
<FONT color="green">199</FONT> if (this.realmPrincipals == null) {<a name="line.199"></a>
<FONT color="green">200</FONT> return null;<a name="line.200"></a>
<FONT color="green">201</FONT> }<a name="line.201"></a>
<FONT color="green">202</FONT> Map&lt;String,Object&gt; principals = this.realmPrincipals.get(name);<a name="line.202"></a>
<FONT color="green">203</FONT> if (principals == null) {<a name="line.203"></a>
<FONT color="green">204</FONT> return null;<a name="line.204"></a>
<FONT color="green">205</FONT> }<a name="line.205"></a>
<FONT color="green">206</FONT> return Collections.unmodifiableMap(principals);<a name="line.206"></a>
<FONT color="green">207</FONT> }<a name="line.207"></a>
<FONT color="green">208</FONT> <a name="line.208"></a>
<FONT color="green">209</FONT> public Map&lt;String,Object&gt; setRealmPrincipals(String realmName, Map&lt;String, Object&gt; principals) {<a name="line.209"></a>
<FONT color="green">210</FONT> if (realmName == null) {<a name="line.210"></a>
<FONT color="green">211</FONT> throw new NullPointerException("realmName argument cannot be null.");<a name="line.211"></a>
<FONT color="green">212</FONT> }<a name="line.212"></a>
<FONT color="green">213</FONT> if (this.realmPrincipals == null) {<a name="line.213"></a>
<FONT color="green">214</FONT> if (!CollectionUtils.isEmpty(principals)) {<a name="line.214"></a>
<FONT color="green">215</FONT> this.realmPrincipals = new HashMap&lt;String,Map&lt;String,Object&gt;&gt;();<a name="line.215"></a>
<FONT color="green">216</FONT> return this.realmPrincipals.put(realmName, new HashMap&lt;String,Object&gt;(principals));<a name="line.216"></a>
<FONT color="green">217</FONT> } else {<a name="line.217"></a>
<FONT color="green">218</FONT> return null;<a name="line.218"></a>
<FONT color="green">219</FONT> }<a name="line.219"></a>
<FONT color="green">220</FONT> } else {<a name="line.220"></a>
<FONT color="green">221</FONT> Map&lt;String,Object&gt; existingPrincipals = this.realmPrincipals.remove(realmName);<a name="line.221"></a>
<FONT color="green">222</FONT> if (!CollectionUtils.isEmpty(principals)) {<a name="line.222"></a>
<FONT color="green">223</FONT> this.realmPrincipals.put(realmName, new HashMap&lt;String,Object&gt;(principals));<a name="line.223"></a>
<FONT color="green">224</FONT> }<a name="line.224"></a>
<FONT color="green">225</FONT> return existingPrincipals;<a name="line.225"></a>
<FONT color="green">226</FONT> }<a name="line.226"></a>
<FONT color="green">227</FONT> }<a name="line.227"></a>
<FONT color="green">228</FONT> <a name="line.228"></a>
<FONT color="green">229</FONT> public Object setRealmPrincipal(String realmName, String principalName, Object principal) {<a name="line.229"></a>
<FONT color="green">230</FONT> if (realmName == null) {<a name="line.230"></a>
<FONT color="green">231</FONT> throw new NullPointerException("realmName argument cannot be null.");<a name="line.231"></a>
<FONT color="green">232</FONT> }<a name="line.232"></a>
<FONT color="green">233</FONT> if (principalName == null) {<a name="line.233"></a>
<FONT color="green">234</FONT> throw new NullPointerException(("principalName argument cannot be null."));<a name="line.234"></a>
<FONT color="green">235</FONT> }<a name="line.235"></a>
<FONT color="green">236</FONT> if (principal == null) {<a name="line.236"></a>
<FONT color="green">237</FONT> return removeRealmPrincipal(realmName, principalName);<a name="line.237"></a>
<FONT color="green">238</FONT> }<a name="line.238"></a>
<FONT color="green">239</FONT> if (this.realmPrincipals == null) {<a name="line.239"></a>
<FONT color="green">240</FONT> this.realmPrincipals = new HashMap&lt;String,Map&lt;String,Object&gt;&gt;();<a name="line.240"></a>
<FONT color="green">241</FONT> }<a name="line.241"></a>
<FONT color="green">242</FONT> Map&lt;String,Object&gt; principals = this.realmPrincipals.get(realmName);<a name="line.242"></a>
<FONT color="green">243</FONT> if (principals == null) {<a name="line.243"></a>
<FONT color="green">244</FONT> principals = new HashMap&lt;String,Object&gt;();<a name="line.244"></a>
<FONT color="green">245</FONT> this.realmPrincipals.put(realmName, principals);<a name="line.245"></a>
<FONT color="green">246</FONT> }<a name="line.246"></a>
<FONT color="green">247</FONT> return principals.put(principalName, principal);<a name="line.247"></a>
<FONT color="green">248</FONT> }<a name="line.248"></a>
<FONT color="green">249</FONT> <a name="line.249"></a>
<FONT color="green">250</FONT> public Object getRealmPrincipal(String realmName, String principalName) {<a name="line.250"></a>
<FONT color="green">251</FONT> if (realmName == null) {<a name="line.251"></a>
<FONT color="green">252</FONT> throw new NullPointerException("realmName argument cannot be null.");<a name="line.252"></a>
<FONT color="green">253</FONT> }<a name="line.253"></a>
<FONT color="green">254</FONT> if (principalName == null) {<a name="line.254"></a>
<FONT color="green">255</FONT> throw new NullPointerException(("principalName argument cannot be null."));<a name="line.255"></a>
<FONT color="green">256</FONT> }<a name="line.256"></a>
<FONT color="green">257</FONT> if (this.realmPrincipals == null) {<a name="line.257"></a>
<FONT color="green">258</FONT> return null;<a name="line.258"></a>
<FONT color="green">259</FONT> }<a name="line.259"></a>
<FONT color="green">260</FONT> Map&lt;String,Object&gt; principals = this.realmPrincipals.get(realmName);<a name="line.260"></a>
<FONT color="green">261</FONT> if (principals != null) {<a name="line.261"></a>
<FONT color="green">262</FONT> return principals.get(principalName);<a name="line.262"></a>
<FONT color="green">263</FONT> }<a name="line.263"></a>
<FONT color="green">264</FONT> return null;<a name="line.264"></a>
<FONT color="green">265</FONT> }<a name="line.265"></a>
<FONT color="green">266</FONT> <a name="line.266"></a>
<FONT color="green">267</FONT> public Object removeRealmPrincipal(String realmName, String principalName) {<a name="line.267"></a>
<FONT color="green">268</FONT> if (realmName == null) {<a name="line.268"></a>
<FONT color="green">269</FONT> throw new NullPointerException("realmName argument cannot be null.");<a name="line.269"></a>
<FONT color="green">270</FONT> }<a name="line.270"></a>
<FONT color="green">271</FONT> if (principalName == null) {<a name="line.271"></a>
<FONT color="green">272</FONT> throw new NullPointerException(("principalName argument cannot be null."));<a name="line.272"></a>
<FONT color="green">273</FONT> }<a name="line.273"></a>
<FONT color="green">274</FONT> if (this.realmPrincipals == null) {<a name="line.274"></a>
<FONT color="green">275</FONT> return null;<a name="line.275"></a>
<FONT color="green">276</FONT> }<a name="line.276"></a>
<FONT color="green">277</FONT> Map&lt;String,Object&gt; principals = this.realmPrincipals.get(realmName);<a name="line.277"></a>
<FONT color="green">278</FONT> if (principals != null) {<a name="line.278"></a>
<FONT color="green">279</FONT> return principals.remove(principalName);<a name="line.279"></a>
<FONT color="green">280</FONT> }<a name="line.280"></a>
<FONT color="green">281</FONT> return null;<a name="line.281"></a>
<FONT color="green">282</FONT> }<a name="line.282"></a>
<FONT color="green">283</FONT> }<a name="line.283"></a>
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