/*
 * Licensed to Crate under one or more contributor license agreements.
 * See the NOTICE file distributed with this work for additional
 * information regarding copyright ownership.  Crate 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.
 *
 * However, if you have executed another commercial license agreement
 * with Crate these terms will supersede the license and you may use the
 * software solely pursuant to the terms of the relevant commercial
 * agreement.
 */

package io.crate.analyze.relations;

import io.crate.analyze.QueriedTable;
import io.crate.analyze.TwoTableJoin;

public class RelationPrinter extends AnalyzedRelationVisitor<Void, String> {

    public static final RelationPrinter INSTANCE = new RelationPrinter();

    private RelationPrinter() {
    }

    @Override
    protected String visitAnalyzedRelation(AnalyzedRelation relation, Void context) {
        return relation.getClass().getCanonicalName();
    }

    @Override
    public String visitTableRelation(TableRelation tableRelation, Void context) {
        return tableRelation.tableInfo().ident().sqlFqn();
    }

    @Override
    public String visitDocTableRelation(DocTableRelation relation, Void context) {
        return relation.tableInfo().ident().sqlFqn();
    }

    @Override
    public String visitQueriedDocTable(QueriedDocTable table, Void context) {
        return table.tableRelation().tableInfo().ident().sqlFqn();
    }

    @Override
    public String visitQueriedTable(QueriedTable table, Void context) {
        return table.tableRelation().tableInfo().ident().sqlFqn();
    }

    @Override
    public String visitTwoTableJoin(TwoTableJoin twoTableJoin, Void context) {
        return twoTableJoin.toString();
    }
}