我有星型模式模型，其中服务器表包含有关服务器名称的信息。信息表包含我想要的特定服务器的信息。并且实际数据表包含有关哪个服务器包含哪些信息的信息。
Server Table
Information Table
Actual Data Table
现在我遇到的问题是 - 我正在尝试使用 JDBC将数据插入到数据表中。但我不确定如何在星型模式模型中将数据添加到实际数据表中。我应该每次都连接到数据库并为每个信息插入它，还是有任何直接的方法可以通过只与数据库通信一次来做到这一点。这是我获取每个服务器的所有信息的代码。IndexData 是我在 Oracle 数据库中插入值的类。
public void fetchlog() {
InputStream is = null;
InputStream isUrl = null;
FileOutputStream fos = null;
try {
is = HttpUtil.getFile(monitorUrl);
if(monitorUrl.contains("stats.jsp") || monitorUrl.contains("monitor.jsp")) {
trimUrl = monitorUrl.replaceAll("(?<=/)(stats|monitor).jsp$", "ping");
}
isUrl = HttpUtil.getFile(trimUrl);
BufferedReader in = new BufferedReader (new InputStreamReader (is));
String line;
int i=0,j=0,k=0;
while ((line = in.readLine()) != null) {
if(line.contains("numDocs")) {
docs = in.readLine().trim();
//So should I keep on inserting into Database for each information, like this
//IndexData id = new IndexData(timeStamp, ServerName, InformationName, docs);
} else if(line.contains("indexSize")) {
indexSize = in.readLine().trim();
//For this information-- the same way?
//IndexData id = new IndexData(timeStamp, ServerName, InformationName, indexSize);
} else if(line.contains("cumulative_lookups")) {
cacheHits= in.readLine().trim();
//For this information too-- the same way?
//IndexData id = new IndexData(timeStamp, ServerName, InformationName, cacheHits);
} else if(line.contains("lastCommitTime")) {
lastCommitTime = in.readLine().trim();
//For this information too-- the same way?
//IndexData id = new IndexData(timeStamp, ServerName, InformationName, lastCommitTime );
}
BufferedReader inUrl = new BufferedReader (new InputStreamReader (isUrl));
String lineUrl;
Pattern regex = Pattern.compile("<str name=\"status\">(.*?)</str>");
while ((lineUrl = inUrl.readLine()) != null) {
System.out.println(lineUrl);
if(lineUrl.contains("str name=\"status\"")) {
Matcher regexMatcher = regex.matcher(lineUrl);
if (regexMatcher.find()) {
upDown= regexMatcher.group(1);
//For this information too-- the same way?
//IndexData id = new IndexData(timeStamp, ServerName, InformationName, upDown);
}
System.out.println("Status:- " + status);
}
}
//Or is there some other way we can insert directly into database by communicating with database only one time not multiple times for each information.
//IndexData id = new IndexData(timeStamp, ServerName, InformationName, Value);
fos = new FileOutputStream(buildTargetPath());
IOUtils.copy(is, fos);
} catch (FileNotFoundException e) {
log.error("File Exception in fetching monitor logs :" + e);
} catch (IOException e) {
log.error("Exception in fetching monitor logs :" + e);
}
}
I hope question is clear to everyone. Any suggestions will be appreciated.