dojo.provide("dojo.data.old.format.Json");
dojo.require("dojo.lang.assert");
dojo.data.old.format.Json = new function() {
// -------------------------------------------------------------------
// Public functions
// -------------------------------------------------------------------
this.loadDataProviderFromFileContents = function(/* dojo.data.old.provider.Base */ dataProvider, /* string */ jsonFileContents) {
dojo.lang.assertType(dataProvider, dojo.data.old.provider.Base);
dojo.lang.assertType(jsonFileContents, String);
var arrayOfJsonData = eval("(" + jsonFileContents + ")");
this.loadDataProviderFromArrayOfJsonData(dataProvider, arrayOfJsonData);
};
this.loadDataProviderFromArrayOfJsonData = function(/* dojo.data.old.provider.Base */ dataProvider, /* Array */ arrayOfJsonData) {
dojo.lang.assertType(arrayOfJsonData, Array, {optional: true});
if (arrayOfJsonData && (arrayOfJsonData.length > 0)) {
var firstRow = arrayOfJsonData[0];
dojo.lang.assertType(firstRow, [Array, "pureobject"]);
if (dojo.lang.isArray(firstRow)) {
_loadDataProviderFromArrayOfArrays(dataProvider, arrayOfJsonData);
} else {
dojo.lang.assertType(firstRow, "pureobject");
_loadDataProviderFromArrayOfObjects(dataProvider, arrayOfJsonData);
}
}
};
this.getJsonStringFromResultSet = function(/* dojo.data.old.ResultSet */ resultSet) {
dojo.unimplemented('dojo.data.old.format.Json.getJsonStringFromResultSet');
var jsonString = null;
return jsonString; // String
};
// -------------------------------------------------------------------
// Private functions
// -------------------------------------------------------------------
function _loadDataProviderFromArrayOfArrays(/* dojo.data.old.provider.Base */ dataProvider, /* Array */ arrayOfJsonData) {
/**
* Example:
* var arrayOfJsonStates = [
* [ "abbr", "population", "name" ]
* [ "WA", 5894121, "Washington" ],
* [ "WV", 1808344, "West Virginia" ],
* [ "WI", 5453896, "Wisconsin" ],
* [ "WY", 493782, "Wyoming" ] ];
* this._loadFromArrayOfArrays(arrayOfJsonStates);
*/
var arrayOfKeys = arrayOfJsonData[0];
for (var i = 1; i < arrayOfJsonData.length; ++i) {
var row = arrayOfJsonData[i];
var item = dataProvider.getNewItemToLoad();
for (var j in row) {
var value = row[j];
var key = arrayOfKeys[j];
item.load(key, value);
}
}
}
function _loadDataProviderFromArrayOfObjects(/* dojo.data.old.provider.Base */ dataProvider, /* Array */ arrayOfJsonData) {
/**
* Example:
* var arrayOfJsonStates = [
* { abbr: "WA", name: "Washington" },
* { abbr: "WV", name: "West Virginia" },
* { abbr: "WI", name: "Wisconsin", song: "On, Wisconsin!" },
* { abbr: "WY", name: "Wyoming", cities: ["Lander", "Cheyenne", "Laramie"] } ];
* this._loadFromArrayOfArrays(arrayOfJsonStates);
*/
// dojo.debug("_loadDataProviderFromArrayOfObjects");
for (var i in arrayOfJsonData) {
var row = arrayOfJsonData[i];
var item = dataProvider.getNewItemToLoad();
for (var key in row) {
var value = row[key];
if (dojo.lang.isArray(value)) {
var arrayOfValues = value;
for (var j in arrayOfValues) {
value = arrayOfValues[j];
item.load(key, value);
// dojo.debug("loaded: " + key + " = " + value);
}
} else {
item.load(key, value);
}
}
}
}
}();