Package com.databend.jdbc

Interface FileTransferAPI

All Known Implementing Classes:
DatabendConnection
public interface FileTransferAPI

  • Method Summary

    Modifier and Type
    Method
    Description
    void
    copyIntoTable(String database, String tableName, DatabendStage stage, DatabendCopyParams params)
    Copy into the target table from files on the internal stage Documentation: https://databend.rs/doc/sql-commands/dml/dml-copy-into-table
    InputStream
    downloadStream(String stageName, String sourceFileName, boolean decompress)
    Download a file from the databend internal stage, the data would be downloaded as one file with no split.
    void
    uploadStream(String stageName, String destPrefix, InputStream inputStream, String destFileName, boolean compressData)
    Upload inputStream to the databend internal stage, the data would be uploaded as one file with no split.

  • Method Details

    • uploadStream

      void uploadStream(String stageName, String destPrefix, InputStream inputStream, String destFileName, boolean compressData) throws SQLException
      Upload inputStream to the databend internal stage, the data would be uploaded as one file with no split. Caller should close the input stream after the upload is done.
      Parameters:
      stageName - the stage which receive uploaded file
      destPrefix - the prefix of the file name in the stage
      inputStream - the input stream of the file
      destFileName - the destination file name in the stage
      compressData - whether to compress the data
      Throws:
      SQLException - failed to upload input stream

    • downloadStream

      InputStream downloadStream(String stageName, String sourceFileName, boolean decompress) throws SQLException
      Download a file from the databend internal stage, the data would be downloaded as one file with no split.
      Parameters:
      stageName - the stage which contains the file
      sourceFileName - the file name in the stage
      decompress - whether to decompress the data
      Returns:
      the input stream of the file
      Throws:
      SQLException

    • copyIntoTable

      void copyIntoTable(String database, String tableName, DatabendStage stage, DatabendCopyParams params) throws SQLException
      Copy into the target table from files on the internal stage Documentation: https://databend.rs/doc/sql-commands/dml/dml-copy-into-table
      Parameters:
      database - the target table's database
      tableName - the target table name
      stage - the stage which contains the files
      params - copy options and file options
      Throws:
      SQLException