package org.apache.lucene.misc;
import java.nio.file.Paths;
import java.util.Locale;
import org.apache.lucene.store.Directory;
import org.apache.lucene.store.FSDirectory;
import org.apache.lucene.util.SuppressForbidden;
import org.apache.lucene.index.DirectoryReader;
import org.apache.lucene.index.IndexReader;
import org.apache.lucene.index.Term;
@SuppressForbidden(reason = "System.out required: command line tool")
public class GetTermInfo {
public static void main(String[] args) throws Exception {
FSDirectory dir = null;
String inputStr = null;
String field = null;
if (args.length == 3) {
dir = FSDirectory.open(Paths.get(args[0]));
field = args[1];
inputStr = args[2];
} else {
usage();
System.exit(1);
}
getTermInfo(dir,new Term(field, inputStr));
}
public static void getTermInfo(Directory dir, Term term) throws Exception {
IndexReader reader = DirectoryReader.open(dir);
System.out.printf(Locale.ROOT, "%s:%s \t totalTF = %,d \t doc freq = %,d \n",
term.field(), term.text(), reader.totalTermFreq(term), reader.docFreq(term));
}
private static void usage() {
System.out
.println("\n\nusage:\n\t"
+ "java " + GetTermInfo.class.getName() + " <index dir> field term \n\n");
}
}