// @RequiresPermissions("topic:index:rebuild")
public void rebuild() throws IOException {
Sql sql = Sqls.queryString("select id from t_topic where tp='ask'");
dao.execute(sql);
luceneIndex.writer.deleteAll();
String[] topicIds = sql.getObject(String[].class);
for (String topicId : topicIds) {
Topic topic = dao.fetch(Topic.class, topicId);
bigContentService.fill(topic);
_add(topic);
}
luceneIndex.writer.commit();
}
protected void _add(Topic topic) {
if (topic == null) return; // 虽然不太可能,还是预防一下吧
// 暂时不索引评论
dao.fetchLinks(topic, "replies");
Document document;
document = new Document();
Field field;
FieldType fieldType;
// 先加入id
fieldType = new FieldType();
fieldType.setIndexed(true); // 索引
fieldType.setStored(true); // 存储
fieldType.setStoreTermVectors(true);
fieldType.setTokenized(true);
fieldType.setStoreTermVectorPositions(true); // 存储位置
fieldType.setStoreTermVectorOffsets(true); // 存储偏移量
field = new Field("id", topic.getId(), fieldType);
document.add(field);
// 加入标题
fieldType = new FieldType();
fieldType.setIndexed(true); // 索引
fieldType.setStored(true); // 存储
fieldType.setStoreTermVectors(true);
fieldType.setTokenized(true);
fieldType.setStoreTermVectorPositions(true); // 存储位置
fieldType.setStoreTermVectorOffsets(true); // 存储偏移量
field = new Field("title", topic.getTitle(), fieldType);
document.add(field);
// 加入文章内容
fieldType = new FieldType();
fieldType.setIndexed(true); // 索引
fieldType.setStored(false); // 存储
fieldType.setStoreTermVectors(true);
fieldType.setTokenized(true);
fieldType.setStoreTermVectorPositions(true); // 存储位置
fieldType.setStoreTermVectorOffsets(true); // 存储偏移量
field = new Field("content", topic.getContent(), fieldType);
document.add(field);
StringBuilder sb = new StringBuilder();
if (topic.getReplies() != null) {
for (TopicReply reply : topic.getReplies()) {
if (reply == null) continue;
bigContentService.fill(reply);
if (reply.getContent() != null) {
if (sb.length() + reply.getContent().length() > (IndexWriter.MAX_TERM_LENGTH / 3)) {
break;
}
sb.append(reply.getContent());
}
}
}
fieldType = new FieldType();
fieldType.setIndexed(true); // 索引
fieldType.setStored(false); // 存储
fieldType.setStoreTermVectors(true);
fieldType.setTokenized(true);
fieldType.setStoreTermVectorPositions(true); // 存储位置
fieldType.setStoreTermVectorOffsets(true); // 存储偏移量
field = new Field("reply", sb.toString(), fieldType);
document.add(field);
try {
luceneIndex.writer.addDocument(document);
} catch (IOException e) {
log.debug("add to index fail : id=" + topic.getId());
} catch (Error e) {
log.debug("add to index fail : id=" + topic.getId());
}
}