/**************************************************************************
/* Prototyping class for searching. This is a modified version of
/* src/demo/org/apache/lucene/demo/SearchFiles.java from the Lucene
/* distribution. See COPYING.lucene in the toplevel directory for
/* copyright information about Lucene.
/*
/* Copyright (c) 2003-2004 by Bernhard Bablok (mail@bablokb.de)
/*
/* This library is free software; you can redistribute it and/or modify
/* it under the terms of the GNU Lesser General Public License as published
/* by  the Free Software Foundation; either version 2 of the License or
/* (at your option) any later version.
/*
/* This library is distributed in the hope that it will be useful, but
/* WITHOUT ANY WARRANTY; without even the implied warranty of
/* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
/* GNU Lesser General Public License for more details.
/*
/* You should have received a copy of the GNU Lesser General Public License
/* along with this library; see the file COPYING.LESSER.  If not, write to
/* the Free Software Foundation Inc., 59 Temple Place - Suite 330,
/* Boston, MA  02111-1307 USA
/**************************************************************************/

package de.bablokb.luala.prototype;

import java.io.IOException;
import java.io.BufferedReader;
import java.io.InputStreamReader;

import org.apache.lucene.store.Directory;
import org.apache.lucene.analysis.Analyzer;
import org.apache.lucene.analysis.standard.StandardAnalyzer;
import org.apache.lucene.document.Document;
import org.apache.lucene.search.Searcher;
import org.apache.lucene.search.IndexSearcher;
import org.apache.lucene.search.Query;
import org.apache.lucene.search.Hits;
import org.apache.lucene.queryParser.QueryParser;

/**
   Prototyping class for searching.

   @version $Revision: 1.7 $
   @author  $Author: bablokb $
*/

public class SearchFiles {

  private Searcher iSearcher;

  ////////////////////////////////////////////////////////////////////////////

  public static void main(String[] args) {
    if (args.length != 2) {
      System.out.println("usage: java " + SearchFiles.class.getName() + 
			 " indexDir query");
      System.exit(1);
    }
    try {
      SearchFiles sf = new SearchFiles();
      Hits hits = sf.getHits(args[0],args[1]);
      System.out.println(hits.length() + " total matching documents");
      sf.dumpHits(hits);
      sf.cleanup();
    } catch (Exception e) {
      e.printStackTrace();
    }
  }

  ////////////////////////////////////////////////////////////////////////////

  public Hits getHits(String indexDir, String queryString) throws Exception {
    iSearcher = new IndexSearcher(indexDir);
    Analyzer analyzer = new StandardAnalyzer();
    Query query = QueryParser.parse(queryString, "content", analyzer);
    System.out.println("Searching for: " + query.toString("content"));
    Hits hits = iSearcher.search(query);
    return hits;
  }

  ////////////////////////////////////////////////////////////////////////////
  
  public void dumpHits(Hits hits) throws Exception {
    for (int i = 0; i < hits.length(); i++) {
      Document doc = hits.doc(i);
      String path = doc.get("path");
      if (path != null) {
	System.out.println(i + ". " + path);
      } else {
	String url = doc.get("url");
	if (url != null) {
	  System.out.println(i + ". " + url);
	  System.out.println("   - " + doc.get("title"));
	} else {
	  System.out.println(i + ". " + "No path nor URL for this document");
	}
      }
    }
  }

  ////////////////////////////////////////////////////////////////////////////
  
  public void cleanup() throws Exception {
    iSearcher.close();
  }
}