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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.flink.annotation.Internal;
import org.apache.flink.table.data.ArrayData;
import org.apache.flink.table.data.DecimalData;
import org.apache.flink.table.data.RowData;
import org.apache.arrow.vector.DecimalVector;
import java.math.BigDecimal;
import static org.apache.flink.table.runtime.typeutils.PythonTypeUtils.fromBigDecimal;
/** {@link ArrowFieldWriter} for Decimal. */
@Internal
public abstract class DecimalWriter extends ArrowFieldWriter {
public static DecimalWriter forRow(
DecimalVector decimalVector, int precision, int scale) {
return new DecimalWriterForRow(decimalVector, precision, scale);
}
public static DecimalWriter forArray(
DecimalVector decimalVector, int precision, int scale) {
return new DecimalWriterForArray(decimalVector, precision, scale);
}
// ------------------------------------------------------------------------------------------
protected final int precision;
protected final int scale;
private DecimalWriter(DecimalVector decimalVector, int precision, int scale) {
super(decimalVector);
this.precision = precision;
this.scale = scale;
}
abstract boolean isNullAt(T in, int ordinal);
abstract DecimalData readDecimal(T in, int ordinal);
@Override
public void doWrite(T in, int ordinal) {
if (isNullAt(in, ordinal)) {
((DecimalVector) getValueVector()).setNull(getCount());
} else {
BigDecimal bigDecimal = readDecimal(in, ordinal).toBigDecimal();
bigDecimal = fromBigDecimal(bigDecimal, precision, scale);
if (bigDecimal == null) {
((DecimalVector) getValueVector()).setNull(getCount());
} else {
((DecimalVector) getValueVector()).setSafe(getCount(), bigDecimal);
}
}
}
// ------------------------------------------------------------------------------------------
/** {@link DecimalWriter} for {@link RowData} input. */
public static final class DecimalWriterForRow extends DecimalWriter {
private DecimalWriterForRow(DecimalVector decimalVector, int precision, int scale) {
super(decimalVector, precision, scale);
}
@Override
boolean isNullAt(RowData in, int ordinal) {
return in.isNullAt(ordinal);
}
@Override
DecimalData readDecimal(RowData in, int ordinal) {
return in.getDecimal(ordinal, precision, scale);
}
}
/** {@link DecimalWriter} for {@link ArrayData} input. */
public static final class DecimalWriterForArray extends DecimalWriter {
private DecimalWriterForArray(DecimalVector decimalVector, int precision, int scale) {
super(decimalVector, precision, scale);
}
@Override
boolean isNullAt(ArrayData in, int ordinal) {
return in.isNullAt(ordinal);
}
@Override
DecimalData readDecimal(ArrayData in, int ordinal) {
return in.getDecimal(ordinal, precision, scale);
}
}
}
