TableAliasCalculator.java

/*
 *    Copyright 2016-2024 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.mybatis.dynamic.sql.render;

import java.util.Optional;

import org.mybatis.dynamic.sql.SqlTable;

public interface TableAliasCalculator {

    Optional<String> aliasForColumn(SqlTable table);

    Optional<String> aliasForTable(SqlTable table);

    static TableAliasCalculator empty() {
        return new TableAliasCalculator() {
            @Override
            public Optional<String> aliasForColumn(SqlTable table) {
                return table.tableAlias();
            }

            @Override
            public Optional<String> aliasForTable(SqlTable table) {
                return table.tableAlias();
            }
        };
    }
}