Eugene Kirpichov created BEAM-2640:
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Summary: Introduce Create.ofProvider(ValueProvider)
Key: BEAM-2640
URL: https://issues.apache.org/jira/browse/BEAM-2640
Project: Beam
Issue Type: Bug
Components: sdk-java-core
Reporter: Eugene Kirpichov
Assignee: Eugene Kirpichov
When you have a ValueProvider<T> that may or may not be accessible at
construction time, a common task is to wrap it into a single-element
PCollection<T>. This is especially common when migrating an IO connector that
used something like Create.of(query) followed by a ParDo, to having query be a
ValueProvider.
Currently this is done in an icky way (e.g.
https://github.com/apache/beam/blob/master/sdks/java/io/google-cloud-platform/src/main/java/org/apache/beam/sdk/io/gcp/datastore/DatastoreV1.java#L615)
We should have a convenience helper for that.
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