/**
* 删除所有索引文档
*
* @param writer
*/
public static void deleteAllIndex(IndexWriter writer) {
try {
writer.deleteAll();
} catch (IOException e) {
e.printStackTrace();
}
}
public void delete() {
IndexWriter writer = null;
try {
writer =
new IndexWriter(
directory,
new IndexWriterConfig(Version.LUCENE_35, new StandardAnalyzer(Version.LUCENE_35)));
// 参数是一个选项，可以是一个Query，也可以是一个term，term是一个精确查找的值
// 此时删除的文档并不会被完全删除，而是存储在一个回收站中的，可以恢复
writer.deleteAll(); // 删除所有
// writer.deleteDocuments(new Term("id","1"));
writer.commit(); // 执行删除
} catch (CorruptIndexException e) {
e.printStackTrace();
} catch (LockObtainFailedException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
} finally {
try {
if (writer != null) writer.close();
} catch (CorruptIndexException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
}
}
public void buildIndex(JSONObject indexData) {
try {
Directory dir = FSDirectory.open(new File(indexDir));
IKAnalyzer analyzer = new IKAnalyzer();
analyzer.setUseSmart(true);
IndexWriterConfig iwc = new IndexWriterConfig(Version.LUCENE_35, analyzer);
indexWriter = new IndexWriter(dir, iwc);
indexWriter.deleteAll();
JSONArray statusData = indexData.getJSONArray("statusData");
for (int i = 0; i < statusData.length(); i++) {
String text = statusData.getString(i);
Document doc = new Document();
doc.add(
new Field(
"text",
text,
Field.Store.YES,
Field.Index.ANALYZED,
Field.TermVector.WITH_POSITIONS_OFFSETS));
indexWriter.addDocument(doc);
}
JSONArray userData = indexData.getJSONArray("userData");
for (int i = 0; i < userData.length(); i++) {
String text = userData.getString(i);
Document doc = new Document();
doc.add(
new Field(
"text",
text,
Field.Store.YES,
Field.Index.ANALYZED,
Field.TermVector.WITH_POSITIONS_OFFSETS));
indexWriter.addDocument(doc);
}
// indexWriter.commit();
System.out.println("Index is done");
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (JSONException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} finally {
try {
indexWriter.close();
} catch (CorruptIndexException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}
public NewIndexer(String indexDir2) throws IOException {
// create the index
if (indexWriter2 == null) {
indexWriter2 =
new IndexWriter(
FSDirectory.open(new File("resultsList")),
new IndexWriterConfig(
Version.LUCENE_36,
new EnglishAnalyzer(Version.LUCENE_36, StandardAnalyzer.STOP_WORDS_SET)));
indexWriter2.deleteAll();
}
}
/** 删除索引 */
public void deleteIndex() {
Directory fsDir;
try {
fsDir = FSDirectory.open(new File(PATH));
NRTCachingDirectory cachedFSDir = new NRTCachingDirectory(fsDir, 5.0, 60.0);
IndexWriterConfig conf =
new IndexWriterConfig(Version.LUCENE_36, new StandardAnalyzer(Version.LUCENE_36));
conf.setMergeScheduler(cachedFSDir.getMergeScheduler());
IndexWriter writer = new IndexWriter(cachedFSDir, conf);
writer.deleteAll();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
public void index() { // 创建索引
IndexWriter writer = null;
try {
writer =
new IndexWriter(
directory,
new IndexWriterConfig(Version.LUCENE_35, new StandardAnalyzer(Version.LUCENE_35)));
writer.deleteAll();
Document doc = null;
for (int i = 0; i < ids.length; i++) {
doc = new Document();
doc.add(new Field("id", ids[i], Field.Store.YES, Field.Index.NOT_ANALYZED_NO_NORMS));
doc.add(new Field("email", emails[i], Field.Store.YES, Field.Index.NOT_ANALYZED));
doc.add(
new Field(
"email", "test" + i + "@test.com", Field.Store.YES, Field.Index.NOT_ANALYZED));
doc.add(new Field("content", contents[i], Field.Store.NO, Field.Index.ANALYZED));
doc.add(new Field("name", names[i], Field.Store.YES, Field.Index.NOT_ANALYZED_NO_NORMS));
// 存储数字
doc.add(new NumericField("attach", Field.Store.YES, true).setIntValue(attachs[i]));
// 存储日期
doc.add(new NumericField("date", Field.Store.YES, true).setLongValue(dates[i].getTime()));
String et = emails[i].substring(emails[i].lastIndexOf("@") + 1);
System.out.println(et);
if (scores.containsKey(et)) {
doc.setBoost(scores.get(et)); // 默认为1
} else {
doc.setBoost(0.5f);
}
writer.addDocument(doc);
}
} catch (CorruptIndexException e) {
e.printStackTrace();
} catch (LockObtainFailedException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
} finally {
try {
if (writer != null) writer.close();
} catch (CorruptIndexException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
}
}
public synchronized void clear() throws IcatException {
try {
populateList.clear();
stopPopulation = true;
while (populatingClass != null) {
try {
Thread.sleep(1000);
} catch (InterruptedException e) {
// Do nothing
}
}
stopPopulation = false;
iwriter.deleteAll();
} catch (IOException e) {
throw new IcatException(IcatExceptionType.INTERNAL, e.getMessage());
}
}
/**
* Deletes all the {@link Document}s.
*
* @throws IOException If Lucene throws IO errors.
*/
public void truncate() throws IOException {
indexWriter.deleteAll();
Log.info("%s truncated", logName);
}
public void deleteAll() throws IOException {
w.deleteAll();
}
public void createSenIndex(JSONArray jsonArray, String indexPath, String stopwordsFile)
throws Exception {
if (jsonArray == null) {
System.out.println("error: jsonArray is null!\n");
return;
}
Analyzer analyzer = null;
if (stopwordsFile == null) {
analyzer = new SimpleAnalyzer();
} else {
analyzer = new StopAnalyzer(Paths.get(stopwordsFile));
}
IndexWriterConfig iwc = new IndexWriterConfig(analyzer);
iwc.setOpenMode(IndexWriterConfig.OpenMode.CREATE);
IndexWriter indexWriter = new IndexWriter(FSDirectory.open(Paths.get(indexPath)), iwc);
indexWriter.deleteAll();
TextUtil textUtil = new TextUtil();
long startTime = new Date().getTime();
System.out.println("jsonArray size: " + jsonArray.size());
long num_sentence = 0;
for (JSONObject jsonObj : (List<JSONObject>) jsonArray) {
long id = (long) jsonObj.get(idKey);
String review = (String) jsonObj.get(reviewKey);
if (review == null || review.isEmpty()) {
continue;
}
if (review.matches(".*[^\\x00-\\x7F].*")) {
continue;
}
String[] tokens = textUtil.tokenize(review);
if (tokens.length <= TERM_MIN_THRESHOLD) {
continue;
}
String[] sentences = textUtil.sentenceDetect(review);
// System.out.println(body.toLowerCase() + "\n");
num_sentence = 0;
for (int i = 0; i < sentences.length; i++) {
if (sentences[i] == null || sentences[i].isEmpty()) {
continue;
}
// System.out.println(sentences[i]);
Document doc = new Document();
Field idField = new LongField(idKey, id, Field.Store.YES);
Field numField = new LongField("num", num_sentence, Field.Store.NO);
Field contentField =
new TextField(
reviewKey,
sentences[i].replaceAll("[_'.,]", " ").replaceAll("[0-9]", ""),
Field.Store.YES);
doc.add(idField);
doc.add(numField);
doc.add(contentField);
indexWriter.addDocument(doc);
num_sentence++;
}
}
indexWriter.commit();
indexWriter.close();
long endTime = new Date().getTime();
System.out.println("\n\ncreate index time: " + (endTime - startTime) + "ms");
System.out.println("\n sentence num: " + num_sentence + "\n");
}
/** 创建索引 */
private static void createIndex() throws IOException {
Directory fsDir = FSDirectory.open(new File(PATH));
NRTCachingDirectory cachedFSDir = new NRTCachingDirectory(fsDir, 5.0, 60.0);
Analyzer analyzer = new IKAnalyzer();
IndexWriterConfig conf = new IndexWriterConfig(Version.LUCENE_36, analyzer);
conf.setMergeScheduler(cachedFSDir.getMergeScheduler());
IndexWriter writer = new IndexWriter(cachedFSDir, conf);
writer.deleteAll();
// 索引的数据源
List<MapBean> ls = LuceneIndexOperator.createDataSource();
int i = 0;
for (MapBean mdata : ls) {
// mdata.getClass().getDeclaredMethods();
Document doc = new Document();
doc.add(new Field("id", "" + mdata.getId(), Field.Store.YES, Field.Index.ANALYZED));
doc.add(new Field("name", mdata.getName(), Field.Store.YES, Field.Index.ANALYZED));
doc.add(new Field("address", mdata.getAddress(), Field.Store.YES, Field.Index.ANALYZED));
doc.add(new Field("city", mdata.getCity(), Field.Store.YES, Field.Index.ANALYZED));
doc.add(new Field("num", mdata.getNum(), Field.Store.YES, Field.Index.ANALYZED));
doc.add(
new Field(
"eastNew",
nullToBlank(mdata.getEastNew()),
Field.Store.YES,
Field.Index.NOT_ANALYZED));
doc.add(
new Field(
"northNew",
nullToBlank(mdata.getNorthNew()),
Field.Store.YES,
Field.Index.NOT_ANALYZED));
doc.add(new Field("datatype", mdata.getDatatype(), Field.Store.YES, Field.Index.ANALYZED));
doc.add(new Field("phone", mdata.getPhone(), Field.Store.YES, Field.Index.NOT_ANALYZED));
doc.add(
new Field(
"geom",
mdata.getEastNew() + "," + mdata.getNorthNew(),
Field.Store.YES,
Field.Index.ANALYZED));
doc.add(
new Field(
"dataType", nullToBlank(mdata.getDatatype()), Field.Store.YES, Field.Index.ANALYZED));
doc.add(
new Field(
"comType",
nullToBlank(mdata.getDataTypeByComType().getDataTypeName()),
Field.Store.YES,
Field.Index.ANALYZED));
doc.add(
new Field(
"dataTypeKey",
nullToBlank(mdata.getDataTypeByDataType().getDataTypeKey()),
Field.Store.YES,
Field.Index.ANALYZED));
doc.add(
new Field(
"comTypeKey",
nullToBlank(mdata.getDataTypeByComType().getDataTypeKey()),
Field.Store.YES,
Field.Index.ANALYZED));
// ReflectFillTheBean(mdata,doc);
// System.out.println(nullToBlank(mdata.getDataTypeByDataType().getDataTypeKey()));
i++;
writer.addDocument(doc);
if (i % 10000 == 0) {
writer.commit();
System.out.println("提交" + i);
}
}
writer.optimize(true);
writer.commit();
writer.close();
}