Couchbase View Query example key prefix matching

index.js

var couchbase = require("couchbase")
var async = require("async")

var bucket = new couchbase.Connection({})

function die(msg) {
  if(msg) console.log(msg)
  bucket.shutdown()
  process.exit()
}

/* documents
 * [
 *   { type: "hero", name: "superman", number: 1 },
 *   { type: "hero", name: "spiderman", number: 2 },
 *   { type: "hero", name: "batman", number: 3 },
 *   { type: "hero", name: "superman", number: 4 },
 * ]
 */

/* views
 *
 * numbered_heros
 *
 * function(doc, meta) {
 *   if (doc.type === "hero") {
 *     emit([doc.number, doc.name], null)
 *   }
 * }
 *
 * heros_numbered
 *
 * function(doc, meta) {
 *   if (doc.type === "hero") {
 *     emit([doc.name, doc.number], null)
 *   }
 * }
 */

async.series([
  function (cb) {
    var options = {
      startkey: [1, "superman"],
      endkey: [9, "superman"]
    }
    var q = bucket.view("heros", "numbered_heros", options)
    q.query(function (err, results) {
      if(err) die(err)

      console.log("key structure [number, name] startkey [1, superman], endkey [9,superman]\n")
      console.log(results)
      cb()
    })
  },

  function (cb) {
    var options = {
      startkey: ["superman"],
      endkey: ["superman", "ZZ"] // ZZ is higher thant the highest number
    }
    var q = bucket.view("heros", "heros_numbered", options)
    q.query(function (err, results) {
      if(err) die(err)

      console.log("key structure [name, number] startkey [superman], endkey [superman]\n")
      console.log(results)
      cb()
    })
  },

  bucket.shutdown.bind(bucket)
])