org.apache.flink.table.runtime.arrow.sources.ArrowTableSource Maven / Gradle / Ivy
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* Licensed to the Apache Software Foundation (ASF) under one
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* 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,
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package org.apache.flink.table.runtime.arrow.sources;
import org.apache.flink.annotation.Internal;
import org.apache.flink.streaming.api.datastream.DataStream;
import org.apache.flink.streaming.api.environment.StreamExecutionEnvironment;
import org.apache.flink.table.api.TableSchema;
import org.apache.flink.table.data.RowData;
import org.apache.flink.table.sources.StreamTableSource;
import org.apache.flink.table.types.DataType;
import org.apache.flink.table.types.utils.DataTypeUtils;
/** A {@link StreamTableSource} for serialized arrow record batch data. */
@Internal
public class ArrowTableSource implements StreamTableSource {
final DataType dataType;
final byte[][] arrowData;
public ArrowTableSource(DataType dataType, byte[][] arrowData) {
this.dataType = dataType;
this.arrowData = arrowData;
}
@Override
public boolean isBounded() {
return true;
}
@Override
public DataStream getDataStream(StreamExecutionEnvironment execEnv) {
return execEnv.addSource(new ArrowSourceFunction(dataType, arrowData));
}
@Override
public TableSchema getTableSchema() {
return TableSchema.fromResolvedSchema(DataTypeUtils.expandCompositeTypeToSchema(dataType));
}
@Override
public DataType getProducedDataType() {
return dataType;
}
}