com.mysql.cj.x.io.DevapiRowFactory Maven / Gradle / Ivy

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JDBC Type 4 driver for MySQL
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/*
 * Copyright (c) 2015, 2017, Oracle and/or its affiliates. All rights reserved.
 *
 * 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 also distributed with certain software (including but not
 * limited to OpenSSL) 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 included with MySQL.
 *
 * 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.x.io;

import java.util.ArrayList;
import java.util.HashMap;
import java.util.Map;
import java.util.TimeZone;
import java.util.stream.IntStream;

import com.mysql.cj.api.x.core.RowToElement;
import com.mysql.cj.api.xdevapi.Row;
import com.mysql.cj.core.result.Field;
import com.mysql.cj.xdevapi.RowImpl;

/**
 * Create {@link Row} objects from internal row representation.
 */
public class DevapiRowFactory implements RowToElement {
    private Map fieldNameToIndex;
    private ArrayList metadata;
    private TimeZone defaultTimeZone;

    public DevapiRowFactory(ArrayList metadata, TimeZone defaultTimeZone) {
        this.metadata = metadata;
        this.defaultTimeZone = defaultTimeZone;
    }

    private Map getFieldNameToIndexMap() {
        if (this.fieldNameToIndex == null) {
            this.fieldNameToIndex = new HashMap<>();
            IntStream.range(0, this.metadata.size()).forEach(i -> this.fieldNameToIndex.put(this.metadata.get(i).getColumnLabel(), i));
        }
        return this.fieldNameToIndex;
    }

    public Row apply(com.mysql.cj.api.result.Row internalRow) {
        return new RowImpl(internalRow, this::getFieldNameToIndexMap, this.defaultTimeZone);
    }
}