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JDBC Type 4 driver for MySQL.
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/*
 * Copyright (c) 2015, 2024, Oracle and/or its affiliates.
 *
 * This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License, version 2.0, as published by
 * the Free Software Foundation.
 *
 * This program is designed to work with certain software that is licensed under separate terms, as designated in a particular file or component or in
 * included license documentation. The authors of MySQL hereby grant you an additional permission to link the program and your derivative works with the
 * separately licensed software that they have either included with the program or referenced in the documentation.
 *
 * Without limiting anything contained in the foregoing, this file, which is part of MySQL Connector/J, is also subject to the Universal FOSS Exception,
 * version 1.0, a copy of which can be found at http://oss.oracle.com/licenses/universal-foss-exception.
 *
 * This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License, version 2.0, for more details.
 *
 * You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc.,
 * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
 */

package com.mysql.cj.xdevapi;

import java.math.BigDecimal;
import java.sql.Date;
import java.sql.Time;
import java.sql.Timestamp;
import java.util.TimeZone;

import com.mysql.cj.conf.PropertySet;
import com.mysql.cj.exceptions.DataReadException;
import com.mysql.cj.protocol.ColumnDefinition;
import com.mysql.cj.result.BigDecimalValueFactory;
import com.mysql.cj.result.BooleanValueFactory;
import com.mysql.cj.result.ByteValueFactory;
import com.mysql.cj.result.DoubleValueFactory;
import com.mysql.cj.result.IntegerValueFactory;
import com.mysql.cj.result.LongValueFactory;
import com.mysql.cj.result.Row;
import com.mysql.cj.result.SqlDateValueFactory;
import com.mysql.cj.result.SqlTimeValueFactory;
import com.mysql.cj.result.SqlTimestampValueFactory;
import com.mysql.cj.result.StringValueFactory;

/**
 * {@link com.mysql.cj.xdevapi.Row} implementation.
 */
public class RowImpl implements com.mysql.cj.xdevapi.Row {

    private Row row;
    private ColumnDefinition metadata;
    /**
     * Default time zone used to create date/time result values.
     */
    private TimeZone defaultTimeZone;
    private PropertySet pset;

    /**
     * Constructor.
     *
     * @param row
     *            {@link Row} instance provided by c/J core.
     * @param metadata
     *            {@link ColumnDefinition} object to use for new rows.
     * @param defaultTimeZone
     *            {@link TimeZone} object representing the default time zone
     * @param pset
     *            {@link PropertySet}
     */
    public RowImpl(Row row, ColumnDefinition metadata, TimeZone defaultTimeZone, PropertySet pset) {
        this.row = row;
        this.metadata = metadata;
        this.defaultTimeZone = defaultTimeZone;
        this.pset = pset;
    }

    /**
     * Map a field name to it's index in the row.
     *
     * @param fieldName
     *            field name
     * @return field index
     * @throws DataReadException
     *             if the field name is not in the row
     */
    private int fieldNameToIndex(String fieldName) {
        int idx = this.metadata.findColumn(fieldName, true, 0);
        if (idx == -1) {
            throw new DataReadException("Invalid column");
        }
        return idx;
    }

    @Override
    public BigDecimal getBigDecimal(String fieldName) {
        return getBigDecimal(fieldNameToIndex(fieldName));
    }

    @Override
    public BigDecimal getBigDecimal(int pos) {
        return this.row.getValue(pos, new BigDecimalValueFactory(this.pset));
    }

    @Override
    public boolean getBoolean(String fieldName) {
        return getBoolean(fieldNameToIndex(fieldName));
    }

    @Override
    public boolean getBoolean(int pos) {
        Boolean res = this.row.getValue(pos, new BooleanValueFactory(this.pset));
        return res == null ? false : res;
    }

    @Override
    public byte getByte(String fieldName) {
        return getByte(fieldNameToIndex(fieldName));
    }

    @Override
    public byte getByte(int pos) {
        Byte res = this.row.getValue(pos, new ByteValueFactory(this.pset));
        return res == null ? (byte) 0 : res;
    }

    @Override
    public Date getDate(String fieldName) {
        return getDate(fieldNameToIndex(fieldName));
    }

    @Override
    public Date getDate(int pos) {
        return this.row.getValue(pos, new SqlDateValueFactory(this.pset, null, this.defaultTimeZone));
    }

    @Override
    public DbDoc getDbDoc(String fieldName) {
        return getDbDoc(fieldNameToIndex(fieldName));
    }

    @Override
    public DbDoc getDbDoc(int pos) {
        return this.row.getValue(pos, new DbDocValueFactory(this.pset));
    }

    @Override
    public double getDouble(String fieldName) {
        return getDouble(fieldNameToIndex(fieldName));
    }

    @Override
    public double getDouble(int pos) {
        Double res = this.row.getValue(pos, new DoubleValueFactory(this.pset));
        return res == null ? 0.0d : res;
    }

    @Override
    public int getInt(String fieldName) {
        return getInt(fieldNameToIndex(fieldName));
    }

    @Override
    public int getInt(int pos) {
        Integer res = this.row.getValue(pos, new IntegerValueFactory(this.pset));
        return res == null ? 0 : res;
    }

    @Override
    public long getLong(String fieldName) {
        return getLong(fieldNameToIndex(fieldName));
    }

    @Override
    public long getLong(int pos) {
        Long res = this.row.getValue(pos, new LongValueFactory(this.pset));
        return res == null ? 0L : res;
    }

    @Override
    public String getString(String fieldName) {
        return getString(fieldNameToIndex(fieldName));
    }

    @Override
    public String getString(int pos) {
        // TODO: charset
        return this.row.getValue(pos, new StringValueFactory(this.pset));
    }

    @Override
    public Time getTime(String fieldName) {
        return getTime(fieldNameToIndex(fieldName));
    }

    @Override
    public Time getTime(int pos) {
        return this.row.getValue(pos, new SqlTimeValueFactory(this.pset, null, this.defaultTimeZone));
    }

    @Override
    public Timestamp getTimestamp(String fieldName) {
        return getTimestamp(fieldNameToIndex(fieldName));
    }

    @Override
    public Timestamp getTimestamp(int pos) {
        return this.row.getValue(pos, new SqlTimestampValueFactory(this.pset, null, this.defaultTimeZone, this.defaultTimeZone));
    }

}