[英]Dataflow- dynamic create disposition Apache Beam
I want to dynamically choose from Create Disposition options depending on the arguments.我想根据 arguments 从创建处置选项中动态选择。 In the the DataflowPipelineOptions I am accepting load type in a ValueProvider via arguments.
在 DataflowPipelineOptions 中,我通过 arguments 接受 ValueProvider 中的负载类型。 However I am not able to get the string from the ValueProvider to decide on what create disposition option to use.
但是,我无法从 ValueProvider 获取字符串来决定使用什么创建处置选项。
withCreateDisposition(BigQueryIO.Write.CreateDisposition.CREATE_IF_NEEDED)
I want 'CREATE_IF_NEEDED' to be dynamic.我希望“CREATE_IF_NEEDED”是动态的。 I want to replace this with something like this.
我想用这样的东西代替它。 Note following is just a pseudocode.
注意以下只是一个伪代码。 I am looking for solution here.
我在这里寻找解决方案。
create_disp = options.getLoad()
withCreateDisposition(create_disp
You can pass a program argument representing createDisposition
您可以传递代表
createDisposition
的程序参数
Program argument (CREATE_NEVER or CREATE_IF_NEEDED):程序参数(CREATE_NEVER 或 CREATE_IF_NEEDED):
--bqCreateDisposition=CREATE_NEVER
In the Option class in Java
, you can pass a field as Enum (there is a default value in this case with CREATE_IF_NEEDED):在 Java 的选项
Java
中,您可以将字段作为 Enum 传递(在这种情况下,有一个默认值是 CREATE_IF_NEEDED):
public interface MyOptions extends PipelineOptions {
@Description("BQ create disposition")
@Default
@Enum("CREATE_IF_NEEDED")
BigQueryIO.Write.CreateDisposition getBqCreateDisposition();
void setBqCreateDisposition(BigQueryIO.Write.CreateDisposition value);
}
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