168 lines
4.9 KiB
Java
168 lines
4.9 KiB
Java
/* Provider.java -- Security provider information
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Copyright (C) 1998, 1999, 2000 Free Software Foundation, Inc.
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This file is part of GNU Classpath.
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GNU Classpath is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2, or (at your option)
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any later version.
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GNU Classpath is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with GNU Classpath; see the file COPYING. If not, write to the
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Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
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02111-1307 USA.
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Linking this library statically or dynamically with other modules is
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making a combined work based on this library. Thus, the terms and
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conditions of the GNU General Public License cover the whole
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combination.
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As a special exception, the copyright holders of this library give you
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permission to link this library with independent modules to produce an
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executable, regardless of the license terms of these independent
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modules, and to copy and distribute the resulting executable under
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terms of your choice, provided that you also meet, for each linked
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independent module, the terms and conditions of the license of that
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module. An independent module is a module which is not derived from
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or based on this library. If you modify this library, you may extend
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this exception to your version of the library, but you are not
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obligated to do so. If you do not wish to do so, delete this
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exception statement from your version. */
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package java.security;
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import java.io.Serializable;
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import java.util.Properties;
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/**
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* This class represents a Java security architecture service provider.
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* The services provided by a such a provider can range from security
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* algorithms to key generation.
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* <p>
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* Providers are installed by name and verion number. There is one
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* standard provider supplied with the class library. This is the
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* "GNU" provider, which can also be accessed by the alias "SUN" for
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* compatibility with the JDK.
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*
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* @version 0.0
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*
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* @author Aaron M. Renn (arenn@urbanophile.com)
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*/
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public abstract class Provider extends Properties implements Serializable
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{
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/**
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* This is a textual description of the provider
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*/
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private String info;
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/**
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* This is the name of the provider
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*/
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private String name;
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/**
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* This is the version number of the provider
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*/
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private double version;
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/**
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* This method initializes a new instance of <code>Provider</code> to have
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* the specified name, version, and description information.
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*
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* @param name The name to assign to this <code>Provider</code>.
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* @param version The version number for this <code>Provider</code>.
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* @param info A textual description of this provider.
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*/
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protected Provider(String name, double version, String info)
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{
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this.name = name;
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this.version = version;
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this.info = info;
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}
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/**
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* This method returns the name assigned to this <code>Provider</code>.
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*
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* @return The <code>Provider</code>'s name.
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*/
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public String getName()
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{
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return (name);
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}
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/**
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* This method retunrs the version number of this <code>Provider</code>.
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*
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* @return The <code>Provider</code>'s version number.
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*/
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public double getVersion()
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{
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return (version);
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}
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/**
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* This method returns a textual description of the <code>Provider</code>.
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*
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* @return A description of the <code>Provider</code>.
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*/
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public String getInfo()
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{
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return (info);
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}
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/**
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* This method sets the specified key to have the specified value.
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*
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* @param key The property key
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* @param value The property value
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*
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* @return The previous value for this key, or <code>null</code> if no previous value.
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*/
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public Object put(Object key, Object value)
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{
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return (super.put(key, value));
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}
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/**
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* This method removes the specified key entry (and its associated value)
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* from the property mapping list.
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*
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* @param key The key to remove
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*
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* @return The previous value for this key, or <code>null</code> if no previous value.
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*/
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public Object remove(Object key)
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{
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return (super.remove(key));
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}
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/**
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* This method clears the entire property list such that it no longer
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* contains the properties used to look up the services provided by
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* the <code>Provider</code>.
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*/
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public void clear()
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{
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super.clear();
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}
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/**
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* This method returns a <code>String</code> representation of this
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* object. This will include the <code>Provider</code> name and
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* version number.
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*
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* @return A <code>String</code> representation of this object.
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*/
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public String toString()
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{
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return (getClass().getName() + ": name=" + getName() + " version=" +
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version);
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}
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}
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