Hi there,

I'm developing a QML plugin to make access to MongoDB (a nosql database) possible.

If you like, take a look at my github repository and tell me if you find are any bugs.

Cheers,

Manuel

there also is a demo file:
Qt Code: 
  1. // TAKE CARE OF PATH IN qmldir FILE!
  2. import Qt 4.7
  3. import "QtMongo"
  4. import "QtMongo/lib/json/json2.js" as Json
  5.  
  6. Row {
  7.     Column {
  8.         Text {
  9.             text: "<b>Object List:</b>"
  10.         }
  11.  
  12.         ListView {
  13.             id: listview
  14.             focus: true
  15.             highlight: Rectangle { color: "lightsteelblue"; radius: 5 }
  16.             width: 250
  17.             height: 500
  18.  
  19.             MongoDB {
  20.                 id: db
  21.                 name: "testdb"
  22.                 host: "localhost"
  23.  
  24.                 collections: [
  25.                     MongoCollection {
  26.                             id: mythings
  27.                             name: "things"
  28.                     }
  29.                 ]
  30.             }
  31.  
  32.             delegate: mydelegate
  33.  
  34.             // this corresponds to
  35.             // model = mythings.find({}):
  36.             model: MongoQuery {
  37.                 collection: mythings
  38.                 query: {}
  39.                 sort: {}
  40.             }
  41.  
  42.             Component {
  43.                 id: mydelegate
  44.  
  45.                 Text {
  46.                     text: "Object "+_id
  47.                 }
  48.             }
  49.  
  50.             onCurrentIndexChanged: jsonEdit.object = listview.model.get(listview.currentIndex)
  51.         }
  52.     }
  53.  
  54.     Column {
  55.         width: 500
  56.         Row {
  57.             spacing: 2
  58.  
  59.             Button {
  60.                 text: "save this object"
  61.                 onButtonClicked: { mythings.save(jsonEdit.object) }
  62.             }
  63.             Button {
  64.                 text: "query this object"
  65.                 onButtonClicked: {
  66.                     listview.model = mythings.find(jsonEdit.object)
  67.                                              .toModel(listview.model) // we need a parent here!
  68.                 }
  69.             }
  70.         }
  71.  
  72.         JsonEdit {
  73.             id: jsonEdit
  74.             height: 300
  75.             width: parent.width
  76.         }
  77.  
  78.         Rectangle {
  79.             id: hint
  80.             height: 100
  81.             width: parent.width
  82.             color: "red"
  83.  
  84.             Text {
  85.                 anchors.fill: parent
  86.                 wrapMode: Text.WordWrap
  87.                 text: "<b>Use up and down keys to navigate!</b><br/>"+
  88.                       "You also might want to modify the <b>MongoDB.name property</b> to your database name "+
  89.                       "and the <b>MongoCollection.name property</b> to your collection name to see any data"
  90.             }
  91.         }
  92.  
  93.         Row {
  94.             spacing: 2
  95.  
  96.             Button {
  97.                 text: "Run MapReduce Demo"
  98.                 onButtonClicked: {
  99.                     var map = function() { emit(1,{}) }
  100.                     var reduce = function( key , values ) { return 123; };
  101.                     var result = mythings.mapReduce(map, reduce, "testname");
  102.  
  103.                     console.log( result.find({}).count() )
  104.                     console.log( Json.JSON.stringify(result.find({}).toArray()) )
  105.                     listview.model = result.find({}).toModel(listview)
  106.                 }
  107.             }
  108.         }
  109.     }
  110. }
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