Github user mjsax commented on a diff in the pull request:
https://github.com/apache/flink/pull/1398#discussion_r45731264
--- Diff:
flink-contrib/flink-storm-examples/src/main/java/org/apache/flink/storm/util/FiniteFileSpout.java
---
@@ -32,46 +23,17 @@
public class FiniteFileSpout extends FileSpout implements FiniteSpout {
private static final long serialVersionUID = -1472978008607215864L;
- private String line;
- private boolean newLineRead;
-
public FiniteFileSpout() {}
public FiniteFileSpout(String path) {
super(path);
}
- @SuppressWarnings("rawtypes")
- @Override
- public void open(final Map conf, final TopologyContext context, final
SpoutOutputCollector collector) {
- super.open(conf, context, collector);
- newLineRead = false;
- }
-
- @Override
- public void nextTuple() {
- this.collector.emit(new Values(line));
- newLineRead = false;
- }
-
/**
* Can be called before nextTuple() any times including 0.
*/
@Override
public boolean reachedEnd() {
- try {
- readLine();
- } catch (IOException e) {
- throw new RuntimeException("Exception occured while
reading file " + path);
- }
- return line == null;
+ return finished;
}
--- End diff --
It is more elegant. But you have already Flink in mind. Given the Flink
agnostic `FileSpout` we have to do it this way. (assume you do not have the
source code of `FileSpout` but only the class file and want to extend it with
`FiniteSpout` interface)
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