TypeScript rethinkdb.table函數代碼示例

 /**
  * Update canvas details.
  * @param canvas Updated canvas details. Must contain canvas ID.
  */
 updateCanvas(canvas: DrawGaiden.Canvas) {
     if (!canvas.id) {
         return Promise.reject('Cannot update canvas with missing ID.');
     }
     return r.table('canvases')
             .get(canvas.id)
             .update(canvas)
             .run(this.conn);
 }

(async function() {
  var conn = await r.connect(config.database);

  try {
    await r.dbCreate(config.database.db).run(conn);
    await r.tableCreate("messages").run(conn);
    await r.table("messages").indexCreate("time").run(conn);
  }
  catch (err) {
    if (err.message.indexOf("already exists") < 0)
      console.log(err.message);
  }

  (await r.table("messages").changes().run(conn)).each((err, item) => {
    if (item && item.new_val)
      io.sockets.emit("message", item.new_val);
  });
})();

routerUnauthenticated.get("/tracks/:barId", async function () {
    var conn = await r.connect(AppConfig.dbConfig);
    this.body = await r.table("tracks")
        .filter({ location: this.params.barId })
        //.orderBy({ index: r.desc("begin") })
        .limit(50)
        .run(conn);
    conn.close();
});

db.connect(async () => {
  console.log('rethink', settings.rethinkdb)
  let conn = await rethink.connect(settings.rethinkdb)
  var dbs = await rethink.dbList().run(conn)
  console.log(dbs)
  let fails = 0
  conn.use('icecondor')
  try {
    const cursor = await rethink.table('fences').run(conn)
    const fences = await cursor.toArray() // all at once
    for (const fence of fences) {
      try {
        console.log(JSON.stringify(fence))
        const eu = await db.fence_add(fence)
        if (eu.inserted != 1) {
          console.log('fence2lmdb fence_add error')
          fails += 1
        }
      } catch (e) {
        console.log('fence2lmdb fence_add', fence.id, 'CATCH', e)
        process.exit(1)
      }
    }
    console.log('*** done', fences.length, 'rethink fences', fails, 'save fails')
    await db.schema_dump()

    const cursor2 = await rethink.table('rules').run(conn)
    const rules = await cursor2.toArray() // all at once
    for (const rule of rules) {
      try {
        console.log(rule)
        const add = await db.rule_add(rule)
      } catch (e) {
        console.log('rule2lmdb', rule, 'CATCH', e)
        process.exit(1)
      }
    }
    console.log('*** done', rules.length, 'rethink rules', fails, 'save fails')
    await db.schema_dump()

  } catch (e) {
    console.log(e)
  }
}).catch(e => { console.log(e); process.exit(1) })

r.connect({ host: "localhost", port: 28015 }, function(err: Error, conn: r.Connection) {
    console.log("HI", err, conn);

    conn.server((err, server) => {});

    const testDb = r.db("test");

    r.table("players").hasFields("games_won").run(conn, errorAndCursorCallback);
    r.table("players").hasFields({ "games_won": { "championships": true } }).run(conn, errorAndCursorCallback);
    r.table("players").filter(r.row.hasFields("games_won").not()).run(conn, errorAndCursorCallback);
    r.table("players").filter(r.row.hasFields({ "games_won": { "championships": true } }).not()).run(conn, errorAndCursorCallback);

    r.table("players").filter(
      r.row.hasFields("games_won").not()
      .or(r.row("games_won").not().eq(true))
      .and(true)
    )
    .run(conn, errorAndCursorCallback);

    const center = r.point(123, 456);
    r.table("geo")
      .getIntersecting(r.circle(center, 1000, { unit: "m" }), { index: "location" })
      .orderBy(r.row("location").distance(center, { unit: "m" }))
      .eqJoin("external", testDb.table("other"), { index: "external" })
      .getField("right")
      .run(conn, errorAndCursorCallback);

    testDb.tableCreate("users").run(conn, function(err, stuff) {
        const users = testDb.table("users");
        users.wait({waitFor: 'ready_for_reads'});
        users.insert({ name: "bob" }).run(conn, function() {
        });

        users.hasFields("foo_bar").run(conn, () => {});

        users.filter(function(doc?) {
            return doc("henry").eq("bob");
        })
        .filter(r.row("updatedAt").default(0).lt(r.now().sub(1000)))
        .between("james", "beth")
        .limit(4)
        .run(conn, function(err, cursor) {
          cursor.toArray<string>((err, strings) => {
            console.log(strings);
          });
        });
    });

    testDb.table("users").indexCreate("name_index", [r.row("name")]);

    r.js("'str1' + 'str2'").run(conn, function (err, value) {});
    r.uuid().run(conn, function (err, uuid) {});
    r.uuid("input value").run(conn, function (err, uuid) {});

    r.table("games").changes().run(conn, function(err, cursor) {
      cursor.each(console.log);
    });
});

 gm(req.file.path).compress("JPEG").toBuffer((err, buf) => {
     r.table("files").insert({ file: buf }).run(req.conn)
         .then((result) => {
             return r.table("users").get(req.params['id']).update({ avatar: result.generated_keys[0] }).run(req.conn)
         })
         .then((result) => {
             res.end("Upload successful")
         })
         .error((err) => {
             res.status(500).end('Failed to change profile photo')
         })
 })

router.get('/avatar/:id', userMW.verify, (req, res) => {
    if (req.params["id"]) {
        r.table("files").get(req.params['id']).pluck("file").run(req.conn)
            .then((file) => {
                res.json(file);
            })
            .error((err) => {
                console.log(err)
                res.end()
            })
    }
});

 /**
  * Create a new canvas.
  * @param name Unique name of the canvas (used as the ID).
  */
 createCanvas(name: string) {
     let canvas: DrawGaiden.Canvas = {
         id: name,
         width: config.defaultCanvas.width,
         height: config.defaultCanvas.height,
         layers: config.defaultCanvas.layers,
         backgroundColor: config.defaultCanvas.backgroundColor
     };
     return r.table('canvases')
             .insert([canvas])
             .run(this.conn);
 }