TaggedStrings.java

package edu.northwestern.at.utils;

/*	Please see the license information at the end of this file. */

import java.util.List;
import java.util.Set;

/**	Interface for a bunch of strings with associated values.
 *
 *	<p>
 *	This is an interface for wrapping various types
 *	of string lists.  Some string lists have one or more different
 *	values for each string, while others have the same value for
 *	each string.  The underlying implementation can be a map,
 *	an array, a trie, a properties list, etc.
 *	</p>
 */

public interface TaggedStrings
{
	/**	See if specified string exists.
	 *
	 *	@param	string	The string.
	 *
	 *	@return			True if specified string exists.
	 */

	public boolean containsString( String string );

	/**	Get the tag value associated with a string.
	 *
	 *	@param	string	The string.
	 *
	 *	@return			The tag value associated with the string.
	 *						May be null.
	 */

	public String getTag( String string );

	/**	Set the tag value associated with a string.
	 *
	 *	@param	string	The string.
	 *	@param	tag		The tag.
	 */

	public void putTag( String string , String tag );

	/**	Get number of strings.
	 *
	 *	@return		Number of strings.
	 */

	public int getStringCount();

	/**	Get set of all unique tag values.
	 *
	 *	@return		List of all tag values.
	 */

	public Set<String> getAllTags();

	/**	Get set of all unique string values.
	 *
	 *	@return		List of all strings.
	 */

	public Set<String> getAllStrings();
}

/*
Copyright (c) 2008, 2009 by Northwestern University.
All rights reserved.

Developed by:
   Academic and Research Technologies
   Northwestern University
   http://www.it.northwestern.edu/about/departments/at/

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obtaining a copy of this software and associated documentation
files (the "Software"), to deal with the Software without
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sell copies of the Software, and to permit persons to whom the
Software is furnished to do so, subject to the following
conditions:

    * Redistributions of source code must retain the above copyright
      notice, this list of conditions and the following disclaimers.

    * Redistributions in binary form must reproduce the above
      copyright notice, this list of conditions and the following
      disclaimers in the documentation and/or other materials provided
      with the distribution.

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      Northwestern University, nor the names of its contributors may be
      used to endorse or promote products derived from this Software
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*/