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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 com.aliyun.odps.table.arrow.constructor;
import com.aliyun.odps.table.utils.Preconditions;
import org.apache.arrow.vector.complex.StructVector;
/**
* {@link ArrowFieldWriter} for Struct.
*/
public abstract class ArrowStructWriter extends ArrowFieldWriter {
protected ArrowFieldWriter[] fieldsWriters;
public ArrowStructWriter(StructVector valueVector,
ArrowFieldWriter[] fieldsWriters) {
super(valueVector);
this.fieldsWriters = Preconditions.checkNotNull(fieldsWriters, "Struct field writer");
}
protected abstract TYPE_STRUCT readStruct(IN in, int ordinal);
@Override
protected void setValue(IN in, int ordinal) {
TYPE_STRUCT struct = readStruct(in, ordinal);
int i = 0;
((StructVector) valueVector).setIndexDefined(count);
while (i < fieldsWriters.length) {
fieldsWriters[i].write(struct, i);
i += 1;
}
}
@Override
protected void setNull() {
int i = 0;
while (i < fieldsWriters.length) {
fieldsWriters[i].setNull();
fieldsWriters[i].count += 1;
i += 1;
}
((StructVector) valueVector).setNull(count);
}
@Override
public void finish() {
super.finish();
for (ArrowFieldWriter> fieldsWriter : fieldsWriters) {
fieldsWriter.finish();
}
}
@Override
public void reset() {
super.reset();
for (ArrowFieldWriter> fieldsWriter : fieldsWriters) {
fieldsWriter.reset();
}
}
}
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