/*
 * 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
 * ASL 2.0 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.DERBY;
import static org.jooq.SQLDialect.DUCKDB;
import static org.jooq.SQLDialect.FIREBIRD;
import static org.jooq.SQLDialect.H2;
import static org.jooq.SQLDialect.HSQLDB;
// ...
import static org.jooq.SQLDialect.MARIADB;
import static org.jooq.SQLDialect.MYSQL;
// ...
// ...
import static org.jooq.impl.Keywords.K_EXCEPT;
import static org.jooq.impl.Keywords.K_EXCLUDE;

import java.util.Arrays;
import java.util.Set;

import org.jooq.Asterisk;
import org.jooq.Context;
import org.jooq.Field;
import org.jooq.Keyword;
import org.jooq.Name;
// ...
import org.jooq.QueryPart;
// ...
import org.jooq.SQLDialect;
// ...
import org.jooq.impl.QOM.UnmodifiableList;

/**
 * @author Lukas Eder
 */
final class AsteriskImpl extends AbstractQueryPart implements Asterisk {
    static final Lazy<AsteriskImpl> INSTANCE                        = Lazy.of(() -> new AsteriskImpl(new QueryPartList<>()));
    static final Set<SQLDialect>    SUPPORT_NATIVE_EXCEPT           = SQLDialect.supportedBy(H2);
    static final Set<SQLDialect>    NO_SUPPORT_UNQUALIFIED_COMBINED = SQLDialect.supportedBy(DERBY, FIREBIRD, HSQLDB, MARIADB, MYSQL);




    final QueryPartList<Field<?>>   fields;

    private AsteriskImpl(QueryPartList<Field<?>> fields) {
        this.fields = fields;
    }

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











        ctx.sql('*');

        // [#7921] H2 has native support for EXCEPT. Emulations are implemented
        //         in SelectQueryImpl
        if (!fields.isEmpty())





                ctx.sql(' ').visit(K_EXCEPT).sql(" (").visit(fields).sql(')');
    }

    static final Keyword keyword(Context<?> ctx) {
        switch (ctx.family()) {

            case DUCKDB:
                return K_EXCLUDE;
            default:
                return K_EXCEPT;
        }
    }

    @Override
    public final Asterisk except(String... fieldNames) {
        return except(Tools.fieldsByName(fieldNames));
    }

    @Override
    public final Asterisk except(Name... fieldNames) {
        return except(Tools.fieldsByName(fieldNames));
    }

    @Override
    public final Asterisk except(Field<?>... f) {
        QueryPartList<Field<?>> list = new QueryPartList<>();

        list.addAll(fields);
        list.addAll(Arrays.asList(f));

        return new AsteriskImpl(list);
    }

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

    @Override
    public final UnmodifiableList<? extends Field<?>> $except() {
        return QOM.unmodifiable(fields);
    }














}
