owlconfig.java

开发owl的API,提供了W3C规定标准接口,是目前比较少的API.

// The MIT License
//
// Copyright (c) 2004 Evren Sirin
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to
// deal in the Software without restriction, including without limitation the
// rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
// sell copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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// IN THE SOFTWARE.

/*
 * Created on Jan 15, 2004
 */
package org.mindswap.owl;

import java.util.Hashtable;

/**
 * @author Evren Sirin
 */
public class OWLConfig {
	/**
	 * Default language is used to determine which literal will be chosen by the 
	 * getProperty(prop) function when there are multiple triples for the given 
	 * property. An empty string means the literals with no language identifier 
	 * will be chosen. A null value means the first found literal will be returned
	 * without looking at the language identifier. Note that even when a default
	 * language is chosen getProperty(prop, lang) can be used to get literal value
	 * for a certain identifier.
	 * 
	 * All the language identifiers in the list will be tried in the order given. 
	 * Original value for the list is
	 *     DEFAULT_LANGS = {"en", "", "en", null};
	 * The ordering here works as follows: 
	 * 1) Try the default language (which is English at the beginning but can be 
	 *    changed any time with setDefaultLanguage() function
	 * 2) Try to find literal with no language identifier
	 * 3) Try English literal
	 * 4) Try literal with any language identifier
	 * 
	 * See http://www.w3.org/TR/REC-xml#sec-lang-tag for language identifier specs  
	 */
	public static String[] DEFAULT_LANGS = {"en", "", "en", null};

	/**
	 * Sets the default language that will be tried first when a literal property
	 * value is searched. Note that this function only sets the first language
	 * but there can be multiple languages defined as DEFAULT_LANGS. 
	 * 
	 * @param lang
	 */
	public static void setDefaultLanguage(String lang) {
		DEFAULT_LANGS[0] = lang;
	}
	
	/**
	 * Sets all the languages that will be tried when a literal property values is 
	 * searched. All the languages in the list wil lbe tried in the order given
	 * 
	 * @param langs
	 */
	public static void setDefaultLanguages(String[] langs) {
		DEFAULT_LANGS = langs;
	}
	
	
	public static Hashtable WRAPPERS = new Hashtable();
	
	public static void addWrapper(Class view, OWLResourceWrapper wrapper) {
		WRAPPERS.put(view ,wrapper);
	}

	public static OWLResourceWrapper getWrapper(Class view) {
		return (OWLResourceWrapper) WRAPPERS.get(view);
	}
}