/*
 * 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.
 *
 * Other licenses:
 * -----------------------------------------------------------------------------
 * Commercial licenses for this work are available. These replace the above
 * Apache-2.0 license and offer limited warranties, support, maintenance, and
 * commercial database integrations.
 *
 * For more information, please visit: https://www.jooq.org/legal/licensing
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package org.jooq.impl;

import static org.jooq.SQLDialect.CLICKHOUSE;
// ...
import static org.jooq.SQLDialect.DERBY;
import static org.jooq.SQLDialect.H2;
// ...
import static org.jooq.SQLDialect.MARIADB;
import static org.jooq.SQLDialect.MYSQL;
// ...
// ...
import static org.jooq.impl.Names.N_T;
import static org.jooq.impl.SubqueryCharacteristics.DERIVED_TABLE;
import static org.jooq.impl.Tools.visitSubquery;

import java.util.Set;

import org.jooq.Clause;
import org.jooq.Context;
import org.jooq.Function1;
import org.jooq.Name;
import org.jooq.Record;
import org.jooq.SQLDialect;
import org.jooq.Select;
import org.jooq.Table;
import org.jooq.TableOptions;

/**
 * @author Lukas Eder
 */
class DerivedTable<R extends Record> extends AbstractTable<R> implements QOM.DerivedTable<R> {

    static final Set<SQLDialect>  NO_SUPPORT_CORRELATED_DERIVED_TABLE = SQLDialect.supportedUntil(CLICKHOUSE, DERBY, H2, MARIADB);
    private final Lazy<Select<R>> query;

    DerivedTable(Select<R> query) {
        this(Lazy.of(() -> query), N_T);
    }

    DerivedTable(Lazy<Select<R>> query, Name name) {
        super(TableOptions.expression(), name);

        this.query = query;
    }

    final Select<R> query() {
        return query.get();
    }

    @Override
    public final Table<R> as(Name alias) {
        return new TableAlias<>(this, alias, true);
    }

    @Override
    public final Table<R> as(Name alias, Name... fieldAliases) {
        return new TableAlias<>(this, alias, fieldAliases, true);
    }

    @Override
    /* non-final */ FieldsImpl<R> fields0() {
        return new FieldsImpl<>(query().getSelect());
    }

    @Override
    public final Class<? extends R> getRecordType() {
        return query().getRecordType();
    }

    @Override
    public final void accept(Context<?> ctx) {










        visitSubquery(ctx, query(), DERIVED_TABLE, false);
    }

    @Override // Avoid AbstractTable implementation
    public final Clause[] clauses(Context<?> ctx) {
        return null;
    }

    // -------------------------------------------------------------------------
    // XXX: Query Object Model
    // -------------------------------------------------------------------------

    @Override
    public final Function1<? super Select<R>, ? extends QOM.DerivedTable<R>> $constructor() {
        return t -> new DerivedTable<>(t);
    }

    @Override
    public final Select<R> $arg1() {
        return query();
    }
}
