Package org.apache.beam.sdk.transforms

Class Regex.ReplaceAll

  • All Implemented Interfaces:
    java.io.Serializable, HasDisplayData
    Enclosing class:
    Regex
    public static class Regex.ReplaceAll
extends PTransform<PCollection<java.lang.String>,​PCollection<java.lang.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:
    Serialized Form

    • Constructor Detail

      • ReplaceAll

        public ReplaceAll​(java.util.regex.Pattern pattern,
                  java.lang.String replacement)

    • Method Detail

      • expand

        public PCollection<java.lang.String> expand​(PCollection<java.lang.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<java.lang.String>,​PCollection<java.lang.String>>