Github user kl0u commented on a diff in the pull request:
https://github.com/apache/flink/pull/2198#discussion_r69561347
--- Diff: docs/apis/streaming/index.md ---
@@ -1357,20 +1364,27 @@ Custom:
<br />
-Sources can by created by using
`StreamExecutionEnvironment.addSource(sourceFunction)`.
-You can either use one of the source functions that come with Flink or
write a custom source
-by implementing the `SourceFunction` for non-parallel sources, or by
implementing the
-`ParallelSourceFunction` interface or extending
`RichParallelSourceFunction` for parallel sources.
+Sources are where your program reads its input from. You can attach a
source to your program by
+using `StreamExecutionEnvironment.addSource(sourceFunction)`. Flink comes
with a number of pre-implemented
+source functions, but you can always write your own custom sources by
implementing the `SourceFunction`
+for non-parallel sources, or by implementing the `ParallelSourceFunction`
interface or extending the
+`RichParallelSourceFunction` for parallel sources.
There are several predefined stream sources accessible from the
`StreamExecutionEnvironment`:
File-based:
-- `readTextFile(path)` / `TextInputFormat` - Reads files line wise and
returns them as Strings.
--- End diff --
Well the problem is that the java version that I am including here takes
also the typeInformation which is implicitly provided in the scala version (one
argument is different). I suggest we keep this version, as it is the most
general one.
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