/*
 * Copyright 2013-2022 the original author or authors.
 *
 * 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
 *
 * https://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.springframework.data.cassandra.core.cql.keyspace;

import com.datastax.oss.driver.api.core.CqlIdentifier;

import org.springframework.lang.Nullable;
import org.springframework.util.Assert;

/**
 * Abstract builder class to support the construction of an index.
 *
 * @param <T> The subtype of the {@link IndexNameSpecification}
 * @author David Webb
 * @author Matthew T. Adams
 * @author Mark Paluch
 */
public abstract class IndexNameSpecification<T extends IndexNameSpecification<T>> {

	/**
	 * The name of the index.
	 */
	private final @Nullable CqlIdentifier name;

	protected IndexNameSpecification() {
		this.name = null;
	}

	protected IndexNameSpecification(CqlIdentifier name) {

		Assert.notNull(name, "CqlIdentifier must not be null");
		this.name = name;
	}

	@Nullable
	public CqlIdentifier getName() {
		return this.name;
	}
}
