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/*
 * Copyright (c) 2009-2016, Data Geekery GmbH (http://www.datageekery.com)
 * All rights reserved.
 *
 * 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
 *
 *  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.
 *
 * 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: http://www.jooq.org/licenses
 *
 *
 *
 *
 *
 *
 *
 *
 *
 *
 *
 *
 *
 *
 *
 *
 */
package org.jooq.impl;

import static org.jooq.impl.DSL.keyword;

import java.sql.Date;
import java.sql.Time;

import org.jooq.Configuration;
import org.jooq.DataType;
import org.jooq.Field;
import org.jooq.QueryPart;


/**
 * @author Lukas Eder
 */
final class DateOrTime extends AbstractFunction {

    /**
     * Generated UID
     */
    private static final long serialVersionUID = -6729613078727690134L;

    private final Field    field;

    DateOrTime(Field field, DataType dataType) {
        super(name(dataType), dataType, field);

        this.field = field;
    }

    private static String name(DataType dataType) {
        return dataType.getType() == Date.class
             ? "date"
             : dataType.getType() == Time.class
             ? "time"
             : "timestamp";
    }

    @Override
    final QueryPart getFunction0(Configuration configuration) {
        switch (configuration.family()) {
            case MYSQL:
            case MARIADB:
                return DSL.field("{" + name(getDataType()) + "}({0})", getDataType(), field);

            case SQLITE: {
                String name =
                      getDataType().getType() == Date.class
                    ? "date"
                    : getDataType().getType() == Time.class
                    ? "time"
                    : "datetime";

                return DSL.field("{0}({1})", getDataType(), keyword(name), field);
            }

            default:
                return field.cast(getDataType());
        }
    }
}