/*
* Finds a full file and sets it as the value.
*/
public synchronized boolean next(LongWritable key, Text value) throws IOException {
Text line = new Text();
boolean retrieved = true;
String result = "";
value.clear();
while (retrieved) {
retrieved = recordReader.next(key, line);
if (line.toString().length() > 0) {
String lineValue = line.toString();
result += lineValue + "\n";
}
}
value.set(result);
return true;
}
/* Finds a full sentence and sets it as the value.
* If the sentence is shorter than the full line, the rest is stored to use later.
*/
public synchronized boolean next(LongWritable key, Text value) throws IOException {
Text line = new Text();
boolean getMore = true;
boolean retrieved = false;
String result = leftovers;
leftovers = "";
value.clear();
while (getMore) {
retrieved = recordReader.next(key, line);
if (retrieved) {
String lineValue = line.toString();
// here, we assume sentences run until the period.
int endOfSentence = lineValue.indexOf('.');
if (endOfSentence == -1) {
result += " " + lineValue;
} else {
result += " " + lineValue.substring(0, endOfSentence + 1);
leftovers = lineValue.substring(endOfSentence + 1);
getMore = false;
}
} else {
getMore = false;
value.set(result);
return false;
}
}
value.set(result);
return true;
}
public float getProgress() {
return recordReader.getProgress();
}
public long getPos() throws IOException {
return recordReader.getPos();
}
public Text createValue() {
return recordReader.createValue();
}
public LongWritable createKey() {
return recordReader.createKey();
}
public void close() throws IOException {
recordReader.close();
}