org.apache.flink.table.runtime.arrow.writers.BinaryWriter Maven / Gradle / Ivy
/*
* 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.RowData;
import org.apache.arrow.vector.FixedSizeBinaryVector;
/** {@link ArrowFieldWriter} for Binary. */
@Internal
public abstract class BinaryWriter extends ArrowFieldWriter {
public static BinaryWriter forRow(FixedSizeBinaryVector fixedSizeBinaryVector) {
return new BinaryWriterForRow(fixedSizeBinaryVector);
}
public static BinaryWriter forArray(FixedSizeBinaryVector fixedSizeBinaryVector) {
return new BinaryWriterForArray(fixedSizeBinaryVector);
}
// ------------------------------------------------------------------------------------------
private BinaryWriter(FixedSizeBinaryVector fixedSizeBinaryVector) {
super(fixedSizeBinaryVector);
}
abstract boolean isNullAt(T in, int ordinal);
abstract byte[] readBinary(T in, int ordinal);
@Override
public void doWrite(T in, int ordinal) {
if (isNullAt(in, ordinal)) {
((FixedSizeBinaryVector) getValueVector()).setNull(getCount());
} else {
((FixedSizeBinaryVector) getValueVector()).setSafe(getCount(), readBinary(in, ordinal));
}
}
// ------------------------------------------------------------------------------------------
/** {@link BinaryWriter} for {@link RowData} input. */
public static final class BinaryWriterForRow extends BinaryWriter {
private BinaryWriterForRow(FixedSizeBinaryVector fixedSizeBinaryVector) {
super(fixedSizeBinaryVector);
}
@Override
boolean isNullAt(RowData in, int ordinal) {
return in.isNullAt(ordinal);
}
@Override
byte[] readBinary(RowData in, int ordinal) {
return in.getBinary(ordinal);
}
}
/** {@link BinaryWriter} for {@link ArrayData} input. */
public static final class BinaryWriterForArray extends BinaryWriter {
private BinaryWriterForArray(FixedSizeBinaryVector fixedSizeBinaryVector) {
super(fixedSizeBinaryVector);
}
@Override
boolean isNullAt(ArrayData in, int ordinal) {
return in.isNullAt(ordinal);
}
@Override
byte[] readBinary(ArrayData in, int ordinal) {
return in.getBinary(ordinal);
}
}
}