dojo.data.ObjectStore

Authors:Kris Zyp Project owner:Kris Zyp since:V1.6

Contents

• dojo.data.ObjectStore
  • Introduction
  • Examples
  • Implementation Notes

dojo.data.ObjectStore is an adapter for using the new Dojo Object Stores with Dojo Data consumers. This adapter takes an object store and implements the Dojo Data API (Read, Write, Identity, and Notification).

Introduction

The ObjectStore is very simple to use, you simply provide a object store to the constructor (in the objectStore property of the first argument) and you can use this data store with any Dojo Data compliant widget or other consumer.

Examples

var objectStore = new dojo.store.JsonRest({target:"/Table/"});

var dataStore = new dojo.data.ObjectStore({objectStore: objectStore});

// we can now use dataStore with any legacy Dojo Data consumer
var grid = new dojox.data.DataGrid({
  store: dataStore,
  ...
});

var objectStore = new dojo.store.JsonRest({target:"/Table/"}); var dataStore = new dojo.data.ObjectStore({objectStore: objectStore}); // we can now use dataStore with any legacy Dojo Data consumer var grid = new dojox.data.DataGrid({ store: dataStore, ... });

Implementation Notes

ObjectStore’s logic for the fetch function assumes that if the given query is an object, it is a map of key/value pairs. It then proceeds to create regular expressions out of each value in the map, but makes the original value available via the toString method. This means that for a dojo.store implementation to operate successfully when run through the dojo.data.ObjectStore adapter, one of two things must be true of the dojo.store’s query implementation for handling query objects:

• it must be capable of handling values in the object as regular expressions (e.g. dojo.store.Memory by way of dojo.store.util.SimpleQueryEngine)
• (or) it must call toString (perhaps implicitly) on each value (e.g. dojo.store.JsonRest by way of encodeURIComponent).

Table of Contents

• dojo.data.ObjectStore
  • Introduction
  • Examples
  • Implementation Notes