Package org.apache.beam.sdk.transforms

Class Regex.ReplaceAll

java.lang.Object
org.apache.beam.sdk.transforms.PTransform<PCollection<String>,PCollection<String>>
org.apache.beam.sdk.transforms.Regex.ReplaceAll
All Implemented Interfaces:
Serializable, HasDisplayData
Enclosing class:
Regex
public static class Regex.ReplaceAll extends PTransform<PCollection<String>,PCollection<String>>
Regex.ReplaceAll<String> takes a PCollection<String> and returns a PCollection<String> with all Strings that matched the Regex being replaced with the replacement string.

This transform runs a Regex on the entire input line. If a portion of the line does not match the Regex, the line will be output without changes. If it does match a portion of the line, all portions matching the Regex will be replaced with the replacement String.

Example of use: 


 PCollection<String> words = ...;
 PCollection<String> values =
     words.apply(Regex.replaceAll("myregex", "myreplacement"));
See Also:

  • Constructor Details

    • ReplaceAll

      public ReplaceAll(Pattern pattern, String replacement)

  • Method Details

    • expand

      public PCollection<String> expand(PCollection<String> in)
      Description copied from class: PTransform
      Override this method to specify how this PTransform should be expanded on the given InputT.

      NOTE: This method should not be called directly. Instead apply the PTransform should be applied to the InputT using the apply method.

      Composite transforms, which are defined in terms of other transforms, should return the output of one of the composed transforms. Non-composite transforms, which do not apply any transforms internally, should return a new unbound output and register evaluators (via backend-specific registration methods).

      Specified by:
      expand in class PTransform<PCollection<String>,PCollection<String>>