/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you 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 io.kyligence.kap.secondstorage.ddl.exp;

import io.kyligence.kap.secondstorage.ddl.visitor.RenderVisitor;
import io.kyligence.kap.secondstorage.ddl.visitor.Renderable;
import org.apache.commons.lang.StringUtils;

public class TableIdentifier implements Renderable {
    public static final char TABLE_ESCAPE = '`';
    private final String database;
    private final String table;

    private TableIdentifier(String database, String table) {
        this.database = database;
        this.table = table;
    }

    public String table() {
        if (StringUtils.isNotEmpty(database)) {
            return TABLE_ESCAPE + database + TABLE_ESCAPE + '.' + TABLE_ESCAPE + table + TABLE_ESCAPE;
        } else {
            return TABLE_ESCAPE + table + TABLE_ESCAPE;
        }
    }

    @Override
    public void accept(RenderVisitor visitor) {
        visitor.visit(this);
    }

    public static TableIdentifier table(String database, String table) {
        return new TableIdentifier(database, table);
    }
}
