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ReadableSource (Apache Crunch 0.7.0 API)
org.apache.crunch.io
Interface ReadableSource<T>
All Superinterfaces: Source <T>
All Known Subinterfaces: ReadableSourceTarget <T>
public interface ReadableSource<T> extends Source <T>
An extension of the Source
interface that indicates that a
Source
instance may be read as a series of records by the client
code. This is used to determine whether a PCollection
instance can be
materialized.
Method Summary
Iterable <T >
read (org.apache.hadoop.conf.Configuration conf)
Returns an Iterable
that contains the contents of this source.
read
Iterable <T > read (org.apache.hadoop.conf.Configuration conf)
throws IOException
Returns an Iterable
that contains the contents of this source.
Parameters: conf
- The current Configuration
instance
Returns: the contents of this Source
as an Iterable
instance
Throws:
IOException
Copyright © 2013 The Apache Software Foundation . All Rights Reserved.