public interface UDF
| 限定符和类型 | 方法和说明 |
|---|---|
default void |
beforeDestroy()
This method is mainly used to release the resources used in the UDF.
|
default void |
validate(UDFParameterValidator validator)
This method is mainly used to validate
UDFParameters and it is executed before UDTF.beforeStart(UDFParameters, UDTFConfigurations) is called. |
default void validate(UDFParameterValidator validator) throws Exception
UDFParameters and it is executed before UDTF.beforeStart(UDFParameters, UDTFConfigurations) is called.validator - the validator used to validate UDFParametersException - if any parameter is not validdefault void beforeDestroy()
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