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/* ========================================================================
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* JCommon : a free general purpose class library for the Java(tm) platform
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* ========================================================================
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* (C) Copyright 2000-2005, by Object Refinery Limited and Contributors.
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* Project Info: http://www.jfree.org/jcommon/index.html
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* This library is free software; you can redistribute it and/or modify it
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* under the terms of the GNU Lesser General Public License as published by
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* the Free Software Foundation; either version 2.1 of the License, or
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* (at your option) any later version.
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* This library is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
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* License for more details.
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
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* [Java is a trademark or registered trademark of Sun Microsystems, Inc.
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* in the United States and other countries.]
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* (C)opyright 2002-2005, by Thomas Morgner and Contributors.
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* Original Author: Thomas Morgner (taquera@sherito.org);
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* Contributor(s): David Gilbert (for Object Refinery Limited);
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* $Id: Configuration.java,v 1.6 2005/11/02 15:23:29 mungady Exp $
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* 02-May-2003 : Initial version (TM);
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package org.jfree.util;
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import java.io.Serializable;
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import java.util.Iterator;
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import java.util.Enumeration;
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* A simple query interface for a configuration.
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* @author Thomas Morgner
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public interface Configuration extends Serializable {
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* Returns the configuration property with the specified key.
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* @param key the property key.
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* @return the property value.
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public String getConfigProperty(String key);
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* Returns the configuration property with the specified key (or the
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* specified default value if there is no such property).
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* If the property is not defined in this configuration, the code will
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* lookup the property in the parent configuration.
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* @param key the property key.
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* @param defaultValue the default value.
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* @return the property value.
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public String getConfigProperty(String key, String defaultValue);
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* Returns all keys with the given prefix.
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* @param prefix the prefix
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* @return the iterator containing all keys with that prefix
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public Iterator findPropertyKeys(String prefix);
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* Returns the configuration properties.
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* @return The configuration properties.
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public Enumeration getConfigProperties();