// $Id$



package net.sf.persist;



import java.util.LinkedHashSet;

import java.util.Locale;

import java.util.Set;



/**

 * Default NameGuesser implementation.

 */

public final class DefaultNameGuesser implements NameGuesser {



	/**

	 * Given a field or class name in the form CompoundName (for classes) or

	 * compoundName (for fields) will return a set of guessed names such as

	 * [compound_name, compound_names, compoundname, compoundnames].

	 */

	public Set<String> guessColumn(final String fieldOrClassName) {



		final String nameUnderscore = fieldOrClassName.replaceAll("([A-Z])", "_$1").toLowerCase();

		final String nameLowercase = fieldOrClassName.toLowerCase(Locale.ENGLISH);



		final Set<String> names = new LinkedHashSet();

		names.add(nameUnderscore);

		names.add(nameLowercase);

		names.add(nameUnderscore + "s");

		names.add(nameLowercase + "s");

		return names;

	}



}