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• 3.13.22
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• ChunkDownloader.java

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net.snowflake.client.core.ChunkDownloader Maven / Gradle / Ivy

/*
 * Copyright (c) 2012-2019 Snowflake Computing Inc. All rights reserved.
 */

package net.snowflake.client.core;

import net.snowflake.client.jdbc.SnowflakeResultChunk;
import net.snowflake.client.jdbc.SnowflakeSQLException;

/** Provide offline result chunk (which contains result data) to back to result set */
public interface ChunkDownloader {
  /**
   * Get next SnowflakeResultChunk that is ready to be consumed by the main thread. The caller will
   * be blocked if the chunk is not ready to be consumed (a.k.a not loaded into memory yet)
   *
   * @return result chunk with data loaded
   */
  SnowflakeResultChunk getNextChunkToConsume() throws InterruptedException, SnowflakeSQLException;

  /**
   * Terminate the chunk downloader, release all resources allocated
   *
   * @return metrics measuring downloader performance
   */
  DownloaderMetrics terminate() throws InterruptedException;
}