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/*
 * Hibernate, Relational Persistence for Idiomatic Java
 *
 * License: GNU Lesser General Public License (LGPL), version 2.1 or later.
 * See the lgpl.txt file in the root directory or .
 */
package org.hibernate.cfg;

import java.io.Serializable;
import java.util.Locale;

import org.hibernate.AssertionFailure;
import org.hibernate.internal.util.StringHelper;

/**
 * An improved naming strategy that prefers embedded
 * underscores to mixed case names
 *
 * @see DefaultNamingStrategy the default strategy
 * @author Gavin King
 *
 * @deprecated {@link NamingStrategy} itself has been deprecated
 */
@Deprecated
public class ImprovedNamingStrategy implements NamingStrategy, Serializable {

	/**
	 * A convenient singleton instance
	 */
	public static final NamingStrategy INSTANCE = new ImprovedNamingStrategy();

	/**
	 * Return the unqualified class name, mixed case converted to
	 * underscores
	 */
	public String classToTableName(String className) {
		return addUnderscores( StringHelper.unqualify(className) );
	}
	/**
	 * Return the full property path with underscore separators, mixed
	 * case converted to underscores
	 */
	public String propertyToColumnName(String propertyName) {
		return addUnderscores( StringHelper.unqualify(propertyName) );
	}
	/**
	 * Convert mixed case to underscores
	 */
	public String tableName(String tableName) {
		return addUnderscores(tableName);
	}
	/**
	 * Convert mixed case to underscores
	 */
	public String columnName(String columnName) {
		return addUnderscores(columnName);
	}

	protected static String addUnderscores(String name) {
		StringBuilder buf = new StringBuilder( name.replace('.', '_') );
		for (int i=1; i