org.wallride.autoconfigure.PhysicalNamingStrategySnakeCaseImpl Maven / Gradle / Ivy

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/*
 * Copyright 2014 Tagbangers, Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.wallride.autoconfigure;

import org.hibernate.boot.model.naming.Identifier;
import org.hibernate.boot.model.naming.PhysicalNamingStrategy;
import org.hibernate.engine.jdbc.env.spi.JdbcEnvironment;

import java.io.Serializable;

public class PhysicalNamingStrategySnakeCaseImpl implements PhysicalNamingStrategy, Serializable {

	/**
	 * Singleton access
	 */
	public static final PhysicalNamingStrategySnakeCaseImpl INSTANCE = new PhysicalNamingStrategySnakeCaseImpl();

	@Override
	public Identifier toPhysicalCatalogName(Identifier name, JdbcEnvironment jdbcEnvironment) {
		return convert(name);
	}

	@Override
	public Identifier toPhysicalSchemaName(Identifier name, JdbcEnvironment jdbcEnvironment) {
		return convert(name);
	}

	@Override
	public Identifier toPhysicalTableName(Identifier name, JdbcEnvironment jdbcEnvironment) {
		return convert(name);
	}

	@Override
	public Identifier toPhysicalSequenceName(Identifier name, JdbcEnvironment jdbcEnvironment) {
		return convert(name);
	}

	@Override
	public Identifier toPhysicalColumnName(Identifier name, JdbcEnvironment jdbcEnvironment) {
		return convert(name);
	}

	private Identifier convert(Identifier identifier) {
		if (identifier == null) {
			return identifier;
		}

		String regex = "([a-z])([A-Z])";
		String replacement = "$1_$2";
		String newName = identifier.getText().replaceAll(regex, replacement).toLowerCase();
		return Identifier.toIdentifier(newName, identifier.isQuoted());
	}
}