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<h5>Coverage Report - org.apache.shiro.authz.Permission</h5>
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<thead><tr> <td class="heading">Classes in this File</td> <td class="heading"><a class="dfn" href="help.html" onclick="popupwindow('help.html'); return false;">Line Coverage</a></td> <td class="heading"><a class="dfn" href="help.html" onclick="popupwindow('help.html'); return false;">Branch Coverage</a></td> <td class="heading"><a class="dfn" href="help.html" onclick="popupwindow('help.html'); return false;">Complexity</a></td></tr></thead>
<tr><td><a href="org.apache.shiro.authz.Permission.html">Permission</a></td><td><table cellpadding="0px" cellspacing="0px" class="percentgraph"><tr class="percentgraph"><td align="right" class="percentgraph" width="40"><a class="dfn" href="help.html" onclick="popupwindow('help.html'); return false;">N/A</a></td><td class="percentgraph"><div class="percentgraph"><div class="na" style="width:100px"><span class="text"><a class="dfn" href="help.html" onclick="popupwindow('help.html'); return false;">N/A</a></span></div></div></td></tr></table></td><td><table cellpadding="0px" cellspacing="0px" class="percentgraph"><tr class="percentgraph"><td align="right" class="percentgraph" width="40"><a class="dfn" href="help.html" onclick="popupwindow('help.html'); return false;">N/A</a></td><td class="percentgraph"><div class="percentgraph"><div class="na" style="width:100px"><span class="text"><a class="dfn" href="help.html" onclick="popupwindow('help.html'); return false;">N/A</a></span></div></div></td></tr></table></td><td class="value"><span class="hidden">1.0;</span>1</td></tr>
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<tr> <td class="numLine">&nbsp;1</td> <td class="nbHits">&nbsp;</td>
<td class="src"><pre class="src">&nbsp;<span class="comment">/*</span></pre></td></tr>
<tr> <td class="numLine">&nbsp;2</td> <td class="nbHits">&nbsp;</td>
<td class="src"><pre class="src">&nbsp;<span class="comment"> * Licensed to the Apache Software Foundation (ASF) under one</span></pre></td></tr>
<tr> <td class="numLine">&nbsp;3</td> <td class="nbHits">&nbsp;</td>
<td class="src"><pre class="src">&nbsp;<span class="comment"> * or more contributor license agreements. See the NOTICE file</span></pre></td></tr>
<tr> <td class="numLine">&nbsp;4</td> <td class="nbHits">&nbsp;</td>
<td class="src"><pre class="src">&nbsp;<span class="comment"> * distributed with this work for additional information</span></pre></td></tr>
<tr> <td class="numLine">&nbsp;5</td> <td class="nbHits">&nbsp;</td>
<td class="src"><pre class="src">&nbsp;<span class="comment"> * regarding copyright ownership. The ASF licenses this file</span></pre></td></tr>
<tr> <td class="numLine">&nbsp;6</td> <td class="nbHits">&nbsp;</td>
<td class="src"><pre class="src">&nbsp;<span class="comment"> * to you under the Apache License, Version 2.0 (the</span></pre></td></tr>
<tr> <td class="numLine">&nbsp;7</td> <td class="nbHits">&nbsp;</td>
<td class="src"><pre class="src">&nbsp;<span class="comment"> * "License"); you may not use this file except in compliance</span></pre></td></tr>
<tr> <td class="numLine">&nbsp;8</td> <td class="nbHits">&nbsp;</td>
<td class="src"><pre class="src">&nbsp;<span class="comment"> * with the License. You may obtain a copy of the License at</span></pre></td></tr>
<tr> <td class="numLine">&nbsp;9</td> <td class="nbHits">&nbsp;</td>
<td class="src"><pre class="src">&nbsp;<span class="comment"> *</span></pre></td></tr>
<tr> <td class="numLine">&nbsp;10</td> <td class="nbHits">&nbsp;</td>
<td class="src"><pre class="src">&nbsp;<span class="comment"> * http://www.apache.org/licenses/LICENSE-2.0</span></pre></td></tr>
<tr> <td class="numLine">&nbsp;11</td> <td class="nbHits">&nbsp;</td>
<td class="src"><pre class="src">&nbsp;<span class="comment"> *</span></pre></td></tr>
<tr> <td class="numLine">&nbsp;12</td> <td class="nbHits">&nbsp;</td>
<td class="src"><pre class="src">&nbsp;<span class="comment"> * Unless required by applicable law or agreed to in writing,</span></pre></td></tr>
<tr> <td class="numLine">&nbsp;13</td> <td class="nbHits">&nbsp;</td>
<td class="src"><pre class="src">&nbsp;<span class="comment"> * software distributed under the License is distributed on an</span></pre></td></tr>
<tr> <td class="numLine">&nbsp;14</td> <td class="nbHits">&nbsp;</td>
<td class="src"><pre class="src">&nbsp;<span class="comment"> * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY</span></pre></td></tr>
<tr> <td class="numLine">&nbsp;15</td> <td class="nbHits">&nbsp;</td>
<td class="src"><pre class="src">&nbsp;<span class="comment"> * KIND, either express or implied. See the License for the</span></pre></td></tr>
<tr> <td class="numLine">&nbsp;16</td> <td class="nbHits">&nbsp;</td>
<td class="src"><pre class="src">&nbsp;<span class="comment"> * specific language governing permissions and limitations</span></pre></td></tr>
<tr> <td class="numLine">&nbsp;17</td> <td class="nbHits">&nbsp;</td>
<td class="src"><pre class="src">&nbsp;<span class="comment"> * under the License.</span></pre></td></tr>
<tr> <td class="numLine">&nbsp;18</td> <td class="nbHits">&nbsp;</td>
<td class="src"><pre class="src">&nbsp;<span class="comment"> */</span></pre></td></tr>
<tr> <td class="numLine">&nbsp;19</td> <td class="nbHits">&nbsp;</td>
<td class="src"><pre class="src">&nbsp;<span class="keyword">package</span> org.apache.shiro.authz;</pre></td></tr>
<tr> <td class="numLine">&nbsp;20</td> <td class="nbHits">&nbsp;</td>
<td class="src"><pre class="src">&nbsp;</pre></td></tr>
<tr> <td class="numLine">&nbsp;21</td> <td class="nbHits">&nbsp;</td>
<td class="src"><pre class="src">&nbsp;<span class="comment">/**</span></pre></td></tr>
<tr> <td class="numLine">&nbsp;22</td> <td class="nbHits">&nbsp;</td>
<td class="src"><pre class="src">&nbsp;<span class="comment"> * A Permission represents the ability to perform an action or access a resource. A Permission is the most</span></pre></td></tr>
<tr> <td class="numLine">&nbsp;23</td> <td class="nbHits">&nbsp;</td>
<td class="src"><pre class="src">&nbsp;<span class="comment"> * granular, or atomic, unit in a system's security policy and is the cornerstone upon which fine-grained security</span></pre></td></tr>
<tr> <td class="numLine">&nbsp;24</td> <td class="nbHits">&nbsp;</td>
<td class="src"><pre class="src">&nbsp;<span class="comment"> * models are built.</span></pre></td></tr>
<tr> <td class="numLine">&nbsp;25</td> <td class="nbHits">&nbsp;</td>
<td class="src"><pre class="src">&nbsp;<span class="comment"> * &lt;p/&gt;</span></pre></td></tr>
<tr> <td class="numLine">&nbsp;26</td> <td class="nbHits">&nbsp;</td>
<td class="src"><pre class="src">&nbsp;<span class="comment"> * It is important to understand a Permission instance only represents functionality or access - it does not grant it.</span></pre></td></tr>
<tr> <td class="numLine">&nbsp;27</td> <td class="nbHits">&nbsp;</td>
<td class="src"><pre class="src">&nbsp;<span class="comment"> * Granting access to an application functionality or a particular resource is done by the application's security</span></pre></td></tr>
<tr> <td class="numLine">&nbsp;28</td> <td class="nbHits">&nbsp;</td>
<td class="src"><pre class="src">&nbsp;<span class="comment"> * configuration, typically by assigning Permissions to users, roles and/or groups.</span></pre></td></tr>
<tr> <td class="numLine">&nbsp;29</td> <td class="nbHits">&nbsp;</td>
<td class="src"><pre class="src">&nbsp;<span class="comment"> * &lt;p/&gt;</span></pre></td></tr>
<tr> <td class="numLine">&nbsp;30</td> <td class="nbHits">&nbsp;</td>
<td class="src"><pre class="src">&nbsp;<span class="comment"> * Most typical systems are what the Shiro team calls &lt;em&gt;role-based&lt;/em&gt; in nature, where a role represents</span></pre></td></tr>
<tr> <td class="numLine">&nbsp;31</td> <td class="nbHits">&nbsp;</td>
<td class="src"><pre class="src">&nbsp;<span class="comment"> * common behavior for certain user types. For example, a system might have an &lt;em&gt;Aministrator&lt;/em&gt; role, a</span></pre></td></tr>
<tr> <td class="numLine">&nbsp;32</td> <td class="nbHits">&nbsp;</td>
<td class="src"><pre class="src">&nbsp;<span class="comment"> * &lt;em&gt;User&lt;/em&gt; or &lt;em&gt;Guest&lt;/em&gt; roles, etc.</span></pre></td></tr>
<tr> <td class="numLine">&nbsp;33</td> <td class="nbHits">&nbsp;</td>
<td class="src"><pre class="src">&nbsp;<span class="comment"> * &lt;p/&gt;</span></pre></td></tr>
<tr> <td class="numLine">&nbsp;34</td> <td class="nbHits">&nbsp;</td>
<td class="src"><pre class="src">&nbsp;<span class="comment"> * But if you have a dynamic security model, where roles can be created and deleted at runtime, you can't hard-code</span></pre></td></tr>
<tr> <td class="numLine">&nbsp;35</td> <td class="nbHits">&nbsp;</td>
<td class="src"><pre class="src">&nbsp;<span class="comment"> * role names in your code. In this environment, roles themselves aren't aren't very useful. What matters is what</span></pre></td></tr>
<tr> <td class="numLine">&nbsp;36</td> <td class="nbHits">&nbsp;</td>
<td class="src"><pre class="src">&nbsp;<span class="comment"> * &lt;em&gt;permissions&lt;/em&gt; are assigned to these roles.</span></pre></td></tr>
<tr> <td class="numLine">&nbsp;37</td> <td class="nbHits">&nbsp;</td>
<td class="src"><pre class="src">&nbsp;<span class="comment"> * &lt;p/&gt;</span></pre></td></tr>
<tr> <td class="numLine">&nbsp;38</td> <td class="nbHits">&nbsp;</td>
<td class="src"><pre class="src">&nbsp;<span class="comment"> * Under this paradigm, permissions are immutable and reflect an application's raw functionality</span></pre></td></tr>
<tr> <td class="numLine">&nbsp;39</td> <td class="nbHits">&nbsp;</td>
<td class="src"><pre class="src">&nbsp;<span class="comment"> * (opening files, accessing a web URL, creating users, etc). This is what allows a system's security policy</span></pre></td></tr>
<tr> <td class="numLine">&nbsp;40</td> <td class="nbHits">&nbsp;</td>
<td class="src"><pre class="src">&nbsp;<span class="comment"> * to be dynamic: because Permissions represent raw functionality and only change when the application's</span></pre></td></tr>
<tr> <td class="numLine">&nbsp;41</td> <td class="nbHits">&nbsp;</td>
<td class="src"><pre class="src">&nbsp;<span class="comment"> * source code changes, they are immutable at runtime - they represent 'what' the system can do. Roles, users, and</span></pre></td></tr>
<tr> <td class="numLine">&nbsp;42</td> <td class="nbHits">&nbsp;</td>
<td class="src"><pre class="src">&nbsp;<span class="comment"> * groups are the 'who' of the application. Determining 'who' can do 'what' then becomes a simple exercise of</span></pre></td></tr>
<tr> <td class="numLine">&nbsp;43</td> <td class="nbHits">&nbsp;</td>
<td class="src"><pre class="src">&nbsp;<span class="comment"> * associating Permissions to roles, users, and groups in some way.</span></pre></td></tr>
<tr> <td class="numLine">&nbsp;44</td> <td class="nbHits">&nbsp;</td>
<td class="src"><pre class="src">&nbsp;<span class="comment"> * &lt;p/&gt;</span></pre></td></tr>
<tr> <td class="numLine">&nbsp;45</td> <td class="nbHits">&nbsp;</td>
<td class="src"><pre class="src">&nbsp;<span class="comment"> * Most applications do this by associating a named role with permissions (i.e. a role 'has a' collection of</span></pre></td></tr>
<tr> <td class="numLine">&nbsp;46</td> <td class="nbHits">&nbsp;</td>
<td class="src"><pre class="src">&nbsp;<span class="comment"> * Permissions) and then associate users with roles (i.e. a user 'has a' collection of roles) so that by transitive</span></pre></td></tr>
<tr> <td class="numLine">&nbsp;47</td> <td class="nbHits">&nbsp;</td>
<td class="src"><pre class="src">&nbsp;<span class="comment"> * association, the user 'has' the permissions in their roles. There are numerous variations on this theme</span></pre></td></tr>
<tr> <td class="numLine">&nbsp;48</td> <td class="nbHits">&nbsp;</td>
<td class="src"><pre class="src">&nbsp;<span class="comment"> * (permissions assigned directly to users, or assigned to groups, and users added to groups and these groups in turn</span></pre></td></tr>
<tr> <td class="numLine">&nbsp;49</td> <td class="nbHits">&nbsp;</td>
<td class="src"><pre class="src">&nbsp;<span class="comment"> * have roles, etc, etc). When employing a permission-based security model instead of a role-based one, users, roles,</span></pre></td></tr>
<tr> <td class="numLine">&nbsp;50</td> <td class="nbHits">&nbsp;</td>
<td class="src"><pre class="src">&nbsp;<span class="comment"> * and groups can all be created, configured and/or deleted at runtime. This enables an extremely powerful security</span></pre></td></tr>
<tr> <td class="numLine">&nbsp;51</td> <td class="nbHits">&nbsp;</td>
<td class="src"><pre class="src">&nbsp;<span class="comment"> * model.</span></pre></td></tr>
<tr> <td class="numLine">&nbsp;52</td> <td class="nbHits">&nbsp;</td>
<td class="src"><pre class="src">&nbsp;<span class="comment"> * &lt;p/&gt;</span></pre></td></tr>
<tr> <td class="numLine">&nbsp;53</td> <td class="nbHits">&nbsp;</td>
<td class="src"><pre class="src">&nbsp;<span class="comment"> * A benefit to Shiro is that, although it assumes most systems are based on these types of static role or</span></pre></td></tr>
<tr> <td class="numLine">&nbsp;54</td> <td class="nbHits">&nbsp;</td>
<td class="src"><pre class="src">&nbsp;<span class="comment"> * dynamic role w/ permission schemes, it does not require a system to model their security data this way - all</span></pre></td></tr>
<tr> <td class="numLine">&nbsp;55</td> <td class="nbHits">&nbsp;</td>
<td class="src"><pre class="src">&nbsp;<span class="comment"> * Permission checks are relegated to {@link org.apache.shiro.realm.Realm} implementations, and only those</span></pre></td></tr>
<tr> <td class="numLine">&nbsp;56</td> <td class="nbHits">&nbsp;</td>
<td class="src"><pre class="src">&nbsp;<span class="comment"> * implementations really determine how a user 'has' a permission or not. The Realm could use the semantics described</span></pre></td></tr>
<tr> <td class="numLine">&nbsp;57</td> <td class="nbHits">&nbsp;</td>
<td class="src"><pre class="src">&nbsp;<span class="comment"> * here, or it could utilize some other mechanism entirely - it is always up to the application developer.</span></pre></td></tr>
<tr> <td class="numLine">&nbsp;58</td> <td class="nbHits">&nbsp;</td>
<td class="src"><pre class="src">&nbsp;<span class="comment"> * &lt;p/&gt;</span></pre></td></tr>
<tr> <td class="numLine">&nbsp;59</td> <td class="nbHits">&nbsp;</td>
<td class="src"><pre class="src">&nbsp;<span class="comment"> * Shiro provides a very powerful default implementation of this interface in the form of the</span></pre></td></tr>
<tr> <td class="numLine">&nbsp;60</td> <td class="nbHits">&nbsp;</td>
<td class="src"><pre class="src">&nbsp;<span class="comment"> * {@link org.apache.shiro.authz.permission.WildcardPermission WildcardPermission}. We highly recommend that you</span></pre></td></tr>
<tr> <td class="numLine">&nbsp;61</td> <td class="nbHits">&nbsp;</td>
<td class="src"><pre class="src">&nbsp;<span class="comment"> * investigate this class before trying to implement your own &lt;code&gt;Permission&lt;/code&gt;s.</span></pre></td></tr>
<tr> <td class="numLine">&nbsp;62</td> <td class="nbHits">&nbsp;</td>
<td class="src"><pre class="src">&nbsp;<span class="comment"> *</span></pre></td></tr>
<tr> <td class="numLine">&nbsp;63</td> <td class="nbHits">&nbsp;</td>
<td class="src"><pre class="src">&nbsp;<span class="comment"> * @see org.apache.shiro.authz.permission.WildcardPermission WildcardPermission</span></pre></td></tr>
<tr> <td class="numLine">&nbsp;64</td> <td class="nbHits">&nbsp;</td>
<td class="src"><pre class="src">&nbsp;<span class="comment"> * @since 0.2</span></pre></td></tr>
<tr> <td class="numLine">&nbsp;65</td> <td class="nbHits">&nbsp;</td>
<td class="src"><pre class="src">&nbsp;<span class="comment"> */</span></pre></td></tr>
<tr> <td class="numLine">&nbsp;66</td> <td class="nbHits">&nbsp;</td>
<td class="src"><pre class="src">&nbsp;<span class="keyword">public</span> <span class="keyword">interface</span> Permission {</pre></td></tr>
<tr> <td class="numLine">&nbsp;67</td> <td class="nbHits">&nbsp;</td>
<td class="src"><pre class="src">&nbsp;</pre></td></tr>
<tr> <td class="numLine">&nbsp;68</td> <td class="nbHits">&nbsp;</td>
<td class="src"><pre class="src">&nbsp; <span class="comment">/**</span></pre></td></tr>
<tr> <td class="numLine">&nbsp;69</td> <td class="nbHits">&nbsp;</td>
<td class="src"><pre class="src">&nbsp;<span class="comment"> * Returns {@code true} if this current instance &lt;em&gt;implies&lt;/em&gt; all the functionality and/or resource access</span></pre></td></tr>
<tr> <td class="numLine">&nbsp;70</td> <td class="nbHits">&nbsp;</td>
<td class="src"><pre class="src">&nbsp;<span class="comment"> * described by the specified {@code Permission} argument, {@code false} otherwise.</span></pre></td></tr>
<tr> <td class="numLine">&nbsp;71</td> <td class="nbHits">&nbsp;</td>
<td class="src"><pre class="src">&nbsp;<span class="comment"> * &lt;p/&gt;</span></pre></td></tr>
<tr> <td class="numLine">&nbsp;72</td> <td class="nbHits">&nbsp;</td>
<td class="src"><pre class="src">&nbsp;<span class="comment"> * &lt;p&gt;That is, this current instance must be exactly equal to or a &lt;em&gt;superset&lt;/em&gt; of the functionalty</span></pre></td></tr>
<tr> <td class="numLine">&nbsp;73</td> <td class="nbHits">&nbsp;</td>
<td class="src"><pre class="src">&nbsp;<span class="comment"> * and/or resource access described by the given {@code Permission} argument. Yet another way of saying this</span></pre></td></tr>
<tr> <td class="numLine">&nbsp;74</td> <td class="nbHits">&nbsp;</td>
<td class="src"><pre class="src">&nbsp;<span class="comment"> * would be:</span></pre></td></tr>
<tr> <td class="numLine">&nbsp;75</td> <td class="nbHits">&nbsp;</td>
<td class="src"><pre class="src">&nbsp;<span class="comment"> * &lt;p/&gt;</span></pre></td></tr>
<tr> <td class="numLine">&nbsp;76</td> <td class="nbHits">&nbsp;</td>
<td class="src"><pre class="src">&nbsp;<span class="comment"> * &lt;p&gt;If &amp;quot;permission1 implies permission2&amp;quot;, i.e. &lt;code&gt;permission1.implies(permission2)&lt;/code&gt; ,</span></pre></td></tr>
<tr> <td class="numLine">&nbsp;77</td> <td class="nbHits">&nbsp;</td>
<td class="src"><pre class="src">&nbsp;<span class="comment"> * then any Subject granted {@code permission1} would have ability greater than or equal to that defined by</span></pre></td></tr>
<tr> <td class="numLine">&nbsp;78</td> <td class="nbHits">&nbsp;</td>
<td class="src"><pre class="src">&nbsp;<span class="comment"> * {@code permission2}.</span></pre></td></tr>
<tr> <td class="numLine">&nbsp;79</td> <td class="nbHits">&nbsp;</td>
<td class="src"><pre class="src">&nbsp;<span class="comment"> *</span></pre></td></tr>
<tr> <td class="numLine">&nbsp;80</td> <td class="nbHits">&nbsp;</td>
<td class="src"><pre class="src">&nbsp;<span class="comment"> * @param p the permission to check for behavior/functionality comparison.</span></pre></td></tr>
<tr> <td class="numLine">&nbsp;81</td> <td class="nbHits">&nbsp;</td>
<td class="src"><pre class="src">&nbsp;<span class="comment"> * @return {@code true} if this current instance &lt;em&gt;implies&lt;/em&gt; all the functionality and/or resource access</span></pre></td></tr>
<tr> <td class="numLine">&nbsp;82</td> <td class="nbHits">&nbsp;</td>
<td class="src"><pre class="src">&nbsp;<span class="comment"> * described by the specified {@code Permission} argument, {@code false} otherwise.</span></pre></td></tr>
<tr> <td class="numLine">&nbsp;83</td> <td class="nbHits">&nbsp;</td>
<td class="src"><pre class="src">&nbsp;<span class="comment"> */</span></pre></td></tr>
<tr> <td class="numLine">&nbsp;84</td> <td class="nbHits">&nbsp;</td>
<td class="src"><pre class="src">&nbsp; <span class="keyword">boolean</span> implies(Permission p);</pre></td></tr>
<tr> <td class="numLine">&nbsp;85</td> <td class="nbHits">&nbsp;</td>
<td class="src"><pre class="src">&nbsp;}</pre></td></tr>
</table>
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