public static void main(String[] args) throws IOException {
if (args.length == 2) {
File file = new File(args[1]);
if (file.exists()) {
file.delete();
}
Map<String, Map<String, Long>> invertedIndex = getInvertedIndex(args[0]);
invertedIndex
.entrySet()
.forEach(
entry -> {
String line = serializeIndexEntry(entry);
FileUtils.appendToFile(args[1], line);
});
FileUtils.appendToFile(args[1], DOC_LENGTH_SEPARATOR);
Map<String, Long> documentAndLength = getDocumentAndLength(args[0]);
documentAndLength
.entrySet()
.forEach(
entry -> {
String doc = entry.getKey();
Long length = entry.getValue();
FileUtils.appendToFile(args[1], String.format("%s=%d", doc, length));
});
} else {
System.out.println("Usage: input_file output_file");
}
}
