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/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you 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.
 */

package org.apache.flink.table.runtime.arrow.writers;

import org.apache.arrow.vector.*;
import org.apache.flink.annotation.Internal;
import org.apache.flink.table.data.ArrayData;
import org.apache.flink.table.data.RowData;
import org.apache.flink.table.data.TimestampData;
import org.apache.flink.util.Preconditions;

import org.apache.arrow.vector.types.pojo.ArrowType;

/** {@link ArrowFieldWriter} for Timestamp. */
@Internal
public abstract class TimestampWriter extends ArrowFieldWriter {

    public static TimestampWriter forRow(ValueVector valueVector, int precision) {
        return new TimestampWriterForRow(valueVector, precision);
    }

    public static TimestampWriter forArray(ValueVector valueVector, int precision) {
        return new TimestampWriterForArray(valueVector, precision);
    }

    // ------------------------------------------------------------------------------------------

    protected final int precision;

    private TimestampWriter(ValueVector valueVector, int precision) {
        super(valueVector);
        Preconditions.checkState(
                valueVector instanceof TimeStampVector
                        );
        this.precision = precision;
    }

    abstract boolean isNullAt(T in, int ordinal);

    abstract TimestampData readTimestamp(T in, int ordinal);

    @Override
    public void doWrite(T in, int ordinal) {
        ValueVector valueVector = getValueVector();
        if (isNullAt(in, ordinal)) {
            ((TimeStampVector) valueVector).setNull(getCount());
        } else {
            TimestampData timestamp = readTimestamp(in, ordinal);

            if (valueVector instanceof TimeStampSecTZVector) {
                ((TimeStampSecTZVector) valueVector)
                        .setSafe(getCount(), timestamp.getMillisecond() / 1000);
            } else if (valueVector instanceof TimeStampSecVector) {
                ((TimeStampSecVector) valueVector)
                        .setSafe(getCount(), timestamp.getMillisecond() / 1000);
            } else if (valueVector instanceof TimeStampMilliTZVector) {
                ((TimeStampMilliTZVector) valueVector)
                        .setSafe(getCount(), timestamp.getMillisecond());
            } else if (valueVector instanceof TimeStampMilliVector) {
                ((TimeStampMilliVector) valueVector)
                        .setSafe(getCount(), timestamp.getMillisecond());
            } else if (valueVector instanceof TimeStampMicroTZVector) {
                ((TimeStampMicroTZVector) valueVector)
                        .setSafe(
                                getCount(),
                                timestamp.getMillisecond() * 1000
                                        + timestamp.getNanoOfMillisecond() / 1000);
            } else if (valueVector instanceof TimeStampMicroVector) {
                ((TimeStampMicroVector) valueVector)
                        .setSafe(
                                getCount(),
                                timestamp.getMillisecond() * 1000
                                        + timestamp.getNanoOfMillisecond() / 1000);
            } else if (valueVector instanceof TimeStampNanoTZVector){
                ((TimeStampNanoTZVector) valueVector)
                        .setSafe(
                                getCount(),
                                timestamp.getMillisecond() * 1_000_000
                                        + timestamp.getNanoOfMillisecond());
            } else {
                ((TimeStampNanoVector) valueVector)
                        .setSafe(
                                getCount(),
                                timestamp.getMillisecond() * 1_000_000
                                        + timestamp.getNanoOfMillisecond());
            }
        }
    }

    // ------------------------------------------------------------------------------------------

    /** {@link TimestampWriter} for {@link RowData} input. */
    public static final class TimestampWriterForRow extends TimestampWriter {

        private TimestampWriterForRow(ValueVector valueVector, int precision) {
            super(valueVector, precision);
        }

        @Override
        boolean isNullAt(RowData in, int ordinal) {
            return in.isNullAt(ordinal);
        }

        @Override
        TimestampData readTimestamp(RowData in, int ordinal) {
            return in.getTimestamp(ordinal, precision);
        }
    }

    /** {@link TimestampWriter} for {@link ArrayData} input. */
    public static final class TimestampWriterForArray extends TimestampWriter {

        private TimestampWriterForArray(ValueVector valueVector, int precision) {
            super(valueVector, precision);
        }

        @Override
        boolean isNullAt(ArrayData in, int ordinal) {
            return in.isNullAt(ordinal);
        }

        @Override
        TimestampData readTimestamp(ArrayData in, int ordinal) {
            return in.getTimestamp(ordinal, precision);
        }
    }
}




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