BigQueryIO.Write.WriteDisposition (Google Cloud Dataflow SDK 1.9.1 API)

Google Cloud Dataflow SDK for Java, version 1.9.1

Enum BigQueryIO.Write.WriteDisposition

    • Enum Constant Detail


        public static final BigQueryIO.Write.WriteDisposition WRITE_TRUNCATE
        Specifies that write should replace a table.

        The replacement may occur in multiple steps - for instance by first removing the existing table, then creating a replacement, then filling it in. This is not an atomic operation, and external programs may see the table in any of these intermediate steps.


        public static final BigQueryIO.Write.WriteDisposition WRITE_EMPTY
        Specifies that the output table must be empty. This is the default behavior.

        If the output table is not empty, the write fails at runtime.

        This check may occur long before data is written, and does not guarantee exclusive access to the table. If two programs are run concurrently, each specifying the same output table and a BigQueryIO.Write.WriteDisposition of WRITE_EMPTY, it is possible for both to succeed.

    • Method Detail

      • values

        public static BigQueryIO.Write.WriteDisposition[] values()
        Returns an array containing the constants of this enum type, in the order they are declared. This method may be used to iterate over the constants as follows:
        for (BigQueryIO.Write.WriteDisposition c : BigQueryIO.Write.WriteDisposition.values())
        an array containing the constants of this enum type, in the order they are declared
      • valueOf

        public static BigQueryIO.Write.WriteDisposition valueOf(String name)
        Returns the enum constant of this type with the specified name. The string must match exactly an identifier used to declare an enum constant in this type. (Extraneous whitespace characters are not permitted.)
        name - the name of the enum constant to be returned.
        the enum constant with the specified name
        IllegalArgumentException - if this enum type has no constant with the specified name
        NullPointerException - if the argument is null

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