如何将xml放入couchDB？

Question

我想这样做:1.将一个xml字符串输出到couchdb服务器.就像是:

curl -X PUT  http://localhost:5984/db/_design/app/_update/echo/h1
-d "<doc><name1>value1</name1><name2>value2</name2></doc>"

2. 在couchdb服务器端,我将xml字符串解析为json对象.
3. 将json对象保存为文档.

这可能吗？我该怎么办？

谢谢!

Answer 1

我找到了另一种方法,这里是样本:

1. 创建数据库

   curl -X PUT http:// localhost:5984/bookstore

2. 创建设计文档

   curl -X POST http:// localhost:5984/bookstore/_bulk_docs -d @design.doc

design.doc的内容是:

{"docs":
  [
    {
        "_id": "_design/app",
        "updates": {
            "xml2json": "
              function (doc, req) {
                if(req.query.doc == null) {
                  return [null, \"doc is null!\\n\"];
                }
                var xmlDoc = req.query.doc.replace(/^<\?xml\s+version\s*=\s*([\"'])[^\1]+\1[^?]*\?>/, \"\");
                var html = new XML(xmlDoc);
                if(doc==null) {
                  doc = {};
                  doc._id=html.BookList.BookData.@isbn13.toString();
                  if(doc._id==null||doc._id==\"\") {
                    doc._id=html.BookList.BookData.@isbn.toString();
                  }
                }
                if (doc._id == null || doc._id == \"\") {
                  return [null, \"doc id is null!\\n\"];;
                }
                doc.title = html.BookList.BookData.Title.text();
                doc.longtitle = html.BookList.BookData.TitleLong.text();
                doc.authors = html.BookList.BookData.AuthorsText.text();
                doc.publisher = html.BookList.BookData.PublisherText.text();
                return [doc, \"ok!\\n\"];
              }"
        }
    }
  ]
}

3. 测试_update

   doc=$(cat isbndb.sample); doc="$(perl -MURI::Escape -e 'print uri_escape($ARGV[0]);' "$doc")"; curl -X PUT http://localhost:5984/bookstore/_design/app/_update/xml2json/9781935182320?doc="$doc"

其中isbndb.sample的内容是:

<?xml version="1.0" encoding="UTF-8"?>

<ISBNdb server_time="2010-08-11T04:13:08Z">
<BookList total_results="1" page_size="10" page_number="1" shown_results="1">
<BookData book_id="mastering_perl" isbn="0596527241" isbn13="9780596527242">
<Title>Mastering Perl</Title>
<TitleLong></TitleLong>
<AuthorsText>brian d foylt;/AuthorsText>
<PublisherText publisher_id="oreilly_media">Sebastopol, CA : O'Reilly Media, c2007.</PublisherText>
</BookData>
</BookList>
</ISBNdb>

Answer 2

最好的办法是在将XML发送到CouchDB之前将XML转换为JSON.当然,您也可以不转换它并将其存储在JSON字段中.您的文档可能如下所示:

{
  "_id": "...",
  "_rev": "...",
  "xml": "<doc><name1>value1</name1><name2>value2</name2></doc>",
  ...some other fields...
}

您还可以将XML存储为附件:http://wiki.apache.org/couchdb/HTTP_Document_API#Attachments这样您就可以进行调用/dbName/documentID/storedData.xml或者其他任何操作,并使用正确的XML Content-type获取文件.

这实际上取决于您是想要恢复XML,还是想在转换后只使用JSON.