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package org.apache.shiro.authz.annotation;

import java.lang.annotation.ElementType;
import java.lang.annotation.Retention;
import java.lang.annotation.RetentionPolicy;
import java.lang.annotation.Target;

 * <p>
 * Requires the current executor's Subject to imply a particular permission in
 * order to execute the annotated method.  If the executor's associated
 * {@link org.apache.shiro.subject.Subject Subject} determines that the
 * executor does not imply the specified permission, the method will not be executed.
 * </p>
 * <p>For example, this declaration:
 * <p/>
 * <code>&#64;RequiresPermissions( "file:read,write:aFile.txt" )<br/>
 * void someMethod();</code>
 * <p/>
 * indicates the current user must be able to both <tt>read</tt> and <tt>write</tt>
 * to the file <tt>aFile.txt</tt> in order for the <tt>someMethod()</tt> to execute, otherwise
 * an {@link org.apache.shiro.authz.AuthorizationException AuthorizationException} will be thrown.
 * @author Jeremy Haile
 * @author Les Hazlewood
 * @see org.apache.shiro.subject.Subject#checkPermission
 * @since 0.1
public @interface RequiresPermissions {

     * The permission string which will be passed to {@link org.apache.shiro.subject.Subject#isPermitted(String)}
     * to determine if the user is allowed to invoke the code protected by this annotation.
    String value();

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