public abstract static class TextIO.ReadFiles extends PTransform<PCollection<FileIO.ReadableFile>,PCollection<java.lang.String>>
TextIO.readFiles()
.name
Constructor and Description |
---|
ReadFiles() |
Modifier and Type | Method and Description |
---|---|
PCollection<java.lang.String> |
expand(PCollection<FileIO.ReadableFile> input)
Override this method to specify how this
PTransform should be expanded on the given
InputT . |
TextIO.ReadFiles |
withDelimiter(byte[] delimiter)
Like
Read#withDelimiter . |
compose, compose, getAdditionalInputs, getDefaultOutputCoder, getDefaultOutputCoder, getDefaultOutputCoder, getKindString, getName, populateDisplayData, toString, validate
public TextIO.ReadFiles withDelimiter(byte[] delimiter)
Read#withDelimiter
.public PCollection<java.lang.String> expand(PCollection<FileIO.ReadableFile> input)
PTransform
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).
expand
in class PTransform<PCollection<FileIO.ReadableFile>,PCollection<java.lang.String>>