/*
* $Header: /home/cvs/jakarta-struts/contrib/artimus/WEB-INF/src/java/org/apache/artimus/http/CreateIndex.java,v 1.5 2004/03/14 07:15:04 sraeburn Exp $
* $Revision: 1.5 $
* $Date: 2004/03/14 07:15:04 $
*
* Copyright 2001-2004 The Apache Software Foundation.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.artimus.http;
import java.io.IOException;
import java.io.PrintWriter;
import java.util.ArrayList;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.apache.struts.action.Action;
import org.apache.struts.action.ActionForm;
import org.apache.struts.action.ActionForward;
import org.apache.struts.action.ActionMapping;
import org.apache.lucene.document.Document;
import org.apache.lucene.document.Field;
import org.apache.lucene.index.IndexWriter;
import org.apache.artimus.article.http.Form;
import org.apache.artimus.search.Engine;
import org.apache.artimus.article.Access;
/**
* Create search engine indexes used by application.
* @version $Revision: 1.5 $ $Date: 2004/03/14 07:15:04 $
**/
public final class CreateIndex extends Action {
// --------------------------------------------------------- Instances Variables
// --------------------------------------------------------- Public Methods
public ActionForward perform(ActionMapping mapping,
ActionForm form,
HttpServletRequest request,
HttpServletResponse response)
throws IOException, ServletException {
response.setContentType("text/plain");
PrintWriter printWriter = response.getWriter();
ArrayList list = null;
Form article = null;
// - Retrieve collection of items in databse
// -- For larger collections, the results would have to
// -- batched in segments of, say, 100 records each
// - ResultUtils.getCollection is the underlying
// - actor here, and returns an ArrayList
try {
// - Create an indexWriter and start a fresh index
IndexWriter index = Engine.getIndexWriter(true);
// - Run through list and create a document for each article
// -- Store keyword and title since they are needed for the search list
// -- Be sure not to pass any blank strings
list = (ArrayList)
Access.select(new Form());
for (int i=0; i<list.size(); i++) {
article = (Form) list.get(i);
// - Add document to index
Access.index(
article.getArticle(),article.getContributor(),article.getCreator(),
article.getTitle(),article.getContent(),index);
// - Report progress
printWriter.print(i); printWriter.print(':');
printWriter.println(article.getTitle());
}
// - Final report
printWriter.print(index.docCount());
printWriter.println(" articles indexed.");
// - Optimize and close index writer
index.optimize();
index.close();
}
catch (Exception e) {
e.printStackTrace();
StringBuffer sb = new StringBuffer("Exception: " + e);
printWriter.println(sb.toString());
}
// -- Process complete ---
printWriter.println("DONE");
return(null);
} // ---- End perform ----
} // ---- End CreateIndex ----