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95 lines
2.1 KiB
95 lines
2.1 KiB
/*
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* Copyright (c) 1996, 2013, Oracle and/or its affiliates. All rights reserved.
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* ORACLE PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
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*
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*
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*
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*
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*
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*
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*
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*
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*
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*
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*
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*
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*
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*
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*
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*
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*
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*
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*
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*
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*/
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package java.security;
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import javax.security.auth.Subject;
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/**
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* This interface represents the abstract notion of a principal, which
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* can be used to represent any entity, such as an individual, a
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* corporation, and a login id.
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*
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* @see java.security.cert.X509Certificate
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*
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* @author Li Gong
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*/
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public interface Principal {
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/**
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* Compares this principal to the specified object. Returns true
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* if the object passed in matches the principal represented by
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* the implementation of this interface.
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*
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* @param another principal to compare with.
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*
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* @return true if the principal passed in is the same as that
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* encapsulated by this principal, and false otherwise.
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*/
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public boolean equals(Object another);
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/**
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* Returns a string representation of this principal.
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*
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* @return a string representation of this principal.
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*/
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public String toString();
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/**
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* Returns a hashcode for this principal.
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*
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* @return a hashcode for this principal.
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*/
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public int hashCode();
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/**
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* Returns the name of this principal.
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*
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* @return the name of this principal.
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*/
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public String getName();
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/**
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* Returns true if the specified subject is implied by this principal.
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*
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* <p>The default implementation of this method returns true if
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* {@code subject} is non-null and contains at least one principal that
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* is equal to this principal.
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*
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* <p>Subclasses may override this with a different implementation, if
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* necessary.
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*
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* @param subject the {@code Subject}
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* @return true if {@code subject} is non-null and is
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* implied by this principal, or false otherwise.
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* @since 1.8
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*/
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public default boolean implies(Subject subject) {
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if (subject == null)
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return false;
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return subject.getPrincipals().contains(this);
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}
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}
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