116 lines
3.3 KiB
JavaScript
116 lines
3.3 KiB
JavaScript
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dojo.provide("dojox.data.WikipediaStore");
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dojo.require("dojo.io.script");
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dojo.require("dojox.rpc.Service");
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dojo.require("dojox.data.ServiceStore");
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dojo.experimental("dojox.data.WikipediaStore");
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dojo.declare("dojox.data.WikipediaStore", dojox.data.ServiceStore,{
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// summary:
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// Initializer for the Wikipedia data store interface.
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// description:
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// The WikipediaStore is a data store interface to Wikipedia, using the
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// Wikipedia SMD spec from dojox.rpc. It currently is useful only for
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// finding articles that contain some particular text or grabbing single
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// articles by full name; no wildcards or other filtering are supported.
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// example:
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// | var store = new dojox.data.WikipediaStore();
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// | store.fetch({
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// | query: {title:"Dojo Toolkit"},
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// | onItem: function(item){
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// | dojo.byId("somediv").innerHTML = item.text["*"];
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// | }
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// | });
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constructor: function(options){
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if(options && options.service){
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this.service = options.service;
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}else{
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var svc = new dojox.rpc.Service(dojo.moduleUrl("dojox.rpc.SMDLibrary", "wikipedia.smd"));
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this.service = svc.query;
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}
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this.idAttribute = this.labelAttribute = "title";
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},
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fetch: function(/* object */ request){
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// summary:
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// Fetch a page or some partially-loaded search results from
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// Wikipedia. Note that there isn't a way to sort data coming
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// in from the API, so we just ignore the *sort* parameter.
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// example:
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// Loading a page:
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// | store.fetch({
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// | query: {title:"Dojo Toolkit"},
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// | // define your handlers here
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// | });
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// example:
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// Searching for pages containing "dojo":
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// | store.fetch({
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// | query: {
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// | action: "query",
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// | text: "dojo"
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// | },
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// | // define your handlers here
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// | });
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// example:
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// Searching for the next 50 pages containing "dojo":
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// | store.fetch({
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// | query: {
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// | action: "query",
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// | text: "dojo",
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// | start: 10,
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// | count: 50 // max 500; will be capped if necessary
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// | },
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// | // define your handlers here
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// | });
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var rq = dojo.mixin({}, request.query);
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if(rq && (!rq.action || rq.action === "parse")){
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// default to a single page fetch
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rq.action = "parse";
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rq.page = rq.title;
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delete rq.title;
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}else if(rq.action === "query"){
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// perform a full text search on page content
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rq.list = "search";
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rq.srwhat = "text";
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rq.srsearch = rq.text;
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if(request.start){
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rq.sroffset = request.start-1;
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}
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if(request.count){
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rq.srlimit = request.count >= 500 ? 500 : request.count;
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}
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delete rq.text;
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}
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request.query = rq;
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return this.inherited(arguments);
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},
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_processResults: function(results, def){
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if(results.parse){
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// loading a complete page
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results.parse.title = dojo.queryToObject(def.ioArgs.url.split("?")[1]).page;
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results = [results.parse];
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}else if(results.query && results.query.search){
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// loading some search results; all we have here is page titles,
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// so we mark our items as incomplete
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results = results.query.search;
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var _thisStore = this;
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for(var i in results){
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results[i]._loadObject = function(callback){
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_thisStore.fetch({
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query: { action:"parse", title:this.title },
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onItem: callback
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});
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delete this._loadObject;
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}
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}
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}
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return this.inherited(arguments);
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}
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});
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