IndexHTMLpublic class IndexHTML extends Object | Copyright 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. |
| Fields Summary |
|---|
| private static boolean | deleting | | private static IndexReader | reader | | private static IndexWriter | writer | | private static TermEnum | uidIter |
| Methods Summary |
|---|
| private static void | indexDocs(java.io.File file, java.lang.String index, boolean create)
if (!create) { // incrementally update
reader = IndexReader.open(index); // open existing index
uidIter = reader.terms(new Term("uid", "")); // init uid iterator
indexDocs(file);
if (deleting) { // delete rest of stale docs
while (uidIter.term() != null && uidIter.term().field() == "uid") {
System.out.println("deleting " +
HTMLDocument.uid2url(uidIter.term().text()));
reader.delete(uidIter.term());
uidIter.next();
}
deleting = false;
}
uidIter.close(); // close uid iterator
reader.close(); // close existing index
} else // don't have exisiting
indexDocs(file);
| | private static void | indexDocs(java.io.File file)
if (file.isDirectory()) { // if a directory
String[] files = file.list(); // list its files
Arrays.sort(files); // sort the files
for (int i = 0; i < files.length; i++) // recursively index them
indexDocs(new File(file, files[i]));
} else if (file.getPath().endsWith(".html") || // index .html files
file.getPath().endsWith(".htm") || // index .htm files
file.getPath().endsWith(".txt")) { // index .txt files
if (uidIter != null) {
String uid = HTMLDocument.uid(file); // construct uid for doc
while (uidIter.term() != null && uidIter.term().field() == "uid" &&
uidIter.term().text().compareTo(uid) < 0) {
if (deleting) { // delete stale docs
System.out.println("deleting " +
HTMLDocument.uid2url(uidIter.term().text()));
reader.delete(uidIter.term());
}
uidIter.next();
}
if (uidIter.term() != null && uidIter.term().field() == "uid" &&
uidIter.term().text().compareTo(uid) == 0) {
uidIter.next(); // keep matching docs
} else if (!deleting) { // add new docs
Document doc = HTMLDocument.Document(file);
System.out.println("adding " + doc.get("url"));
writer.addDocument(doc);
}
} else { // creating a new index
Document doc = HTMLDocument.Document(file);
System.out.println("adding " + doc.get("url"));
writer.addDocument(doc); // add docs unconditionally
}
}
| | public static void | main(java.lang.String[] argv) // document id iterator
try {
String index = "index";
boolean create = false;
File root = null;
String usage = "IndexHTML [-create] [-index <index>] <root_directory>";
if (argv.length == 0) {
System.err.println("Usage: " + usage);
return;
}
for (int i = 0; i < argv.length; i++) {
if (argv[i].equals("-index")) { // parse -index option
index = argv[++i];
} else if (argv[i].equals("-create")) { // parse -create option
create = true;
} else if (i != argv.length-1) {
System.err.println("Usage: " + usage);
return;
} else
root = new File(argv[i]);
}
Date start = new Date();
if (!create) { // delete stale docs
deleting = true;
indexDocs(root, index, create);
}
writer = new IndexWriter(index, new StandardAnalyzer(), create);
writer.maxFieldLength = 1000000;
indexDocs(root, index, create); // add new docs
System.out.println("Optimizing index...");
writer.optimize();
writer.close();
Date end = new Date();
System.out.print(end.getTime() - start.getTime());
System.out.println(" total milliseconds");
} catch (Exception e) {
System.out.println(" caught a " + e.getClass() +
"\n with message: " + e.getMessage());
}
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