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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;

import com.aliyun.odps.table.arrow.readers.ArrowBatchNonReusedReader;
import com.aliyun.odps.table.arrow.readers.ArrowBatchReusedReader;
import com.aliyun.odps.table.configuration.CompressionCodec;
import com.aliyun.odps.table.configuration.ReaderOptions;
import org.apache.arrow.compression.CommonsCompressionFactory;

import java.io.InputStream;

/**
 * A factory used to create {@link ArrowReader} instances.
 */
public class ArrowReaderFactory {

    public static ArrowReader getRecordBatchReader(InputStream is,
                                                   ReaderOptions options) {
        if (options.isReuseBatch()) {
            if (options.getCompressionCodec().equals(CompressionCodec.NO_COMPRESSION)) {
                return new ArrowBatchReusedReader(is, options.getBufferAllocator());
            } else {
                return new ArrowBatchReusedReader(is, options.getBufferAllocator(), CommonsCompressionFactory.INSTANCE);
            }
        } else {
            if (options.getCompressionCodec().equals(CompressionCodec.NO_COMPRESSION)) {
                return new ArrowBatchNonReusedReader(is, options.getBufferAllocator());
            } else {
                return new ArrowBatchNonReusedReader(is, options.getBufferAllocator(), CommonsCompressionFactory.INSTANCE);
            }
        }
    }
}