com.qualifiedcactus.sqlObjectMapper.fromRs.resultSetProcessing.RsSpliterator.kt Maven / Gradle / Ivy

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/*
 * MIT License
 *
 * Copyright (c) 2023 qualified-cactus
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in all
 * copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 *
 */

package com.qualifiedcactus.sqlObjectMapper.fromRs.resultSetProcessing

import java.sql.ResultSet
import java.util.Spliterator
import java.util.function.Consumer

internal class RsSpliterator
constructor(
    val resultSet: ResultSet,
    val resultSetToData: (rs: ResultSet) -> T,
) : Spliterator {

    override fun tryAdvance(action: Consumer): Boolean {
        if (resultSet.next()) {
            action.accept(resultSetToData(resultSet))
            return true
        } else {
            return false
        }
    }

    override fun trySplit(): Spliterator? = null
    override fun estimateSize(): Long = Long.MAX_VALUE

    override fun characteristics(): Int = Spliterator.NONNULL
}