org.apache.flink.table.runtime.arrow.writers.VarBinaryWriter Maven / Gradle / Ivy
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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.RowData;
import org.apache.arrow.vector.VarBinaryVector;
/** {@link ArrowFieldWriter} for VarBinary. */
@Internal
public abstract class VarBinaryWriter extends ArrowFieldWriter {
public static VarBinaryWriter forRow(VarBinaryVector varBinaryVector) {
return new VarBinaryWriterForRow(varBinaryVector);
}
public static VarBinaryWriter forArray(VarBinaryVector varBinaryVector) {
return new VarBinaryWriterForArray(varBinaryVector);
}
// ------------------------------------------------------------------------------------------
private VarBinaryWriter(VarBinaryVector varBinaryVector) {
super(varBinaryVector);
}
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)) {
((VarBinaryVector) getValueVector()).setNull(getCount());
} else {
((VarBinaryVector) getValueVector()).setSafe(getCount(), readBinary(in, ordinal));
}
}
// ------------------------------------------------------------------------------------------
/** {@link VarBinaryWriter} for {@link RowData} input. */
public static final class VarBinaryWriterForRow extends VarBinaryWriter {
private VarBinaryWriterForRow(VarBinaryVector varBinaryVector) {
super(varBinaryVector);
}
@Override
boolean isNullAt(RowData in, int ordinal) {
return in.isNullAt(ordinal);
}
@Override
byte[] readBinary(RowData in, int ordinal) {
return in.getBinary(ordinal);
}
}
/** {@link VarBinaryWriter} for {@link ArrayData} input. */
public static final class VarBinaryWriterForArray extends VarBinaryWriter {
private VarBinaryWriterForArray(VarBinaryVector varBinaryVector) {
super(varBinaryVector);
}
@Override
boolean isNullAt(ArrayData in, int ordinal) {
return in.isNullAt(ordinal);
}
@Override
byte[] readBinary(ArrayData in, int ordinal) {
return in.getBinary(ordinal);
}
}
}