diff options
Diffstat (limited to 'js/dojo-1.6/dojox/data/util/JsonQuery.js')
| -rw-r--r-- | js/dojo-1.6/dojox/data/util/JsonQuery.js | 108 |
1 files changed, 108 insertions, 0 deletions
diff --git a/js/dojo-1.6/dojox/data/util/JsonQuery.js b/js/dojo-1.6/dojox/data/util/JsonQuery.js new file mode 100644 index 0000000..911015b --- /dev/null +++ b/js/dojo-1.6/dojox/data/util/JsonQuery.js @@ -0,0 +1,108 @@ +/*
+ Copyright (c) 2004-2011, The Dojo Foundation All Rights Reserved.
+ Available via Academic Free License >= 2.1 OR the modified BSD license.
+ see: http://dojotoolkit.org/license for details
+*/
+
+
+if(!dojo._hasResource["dojox.data.util.JsonQuery"]){ //_hasResource checks added by build. Do not use _hasResource directly in your code.
+dojo._hasResource["dojox.data.util.JsonQuery"] = true;
+dojo.provide("dojox.data.util.JsonQuery");
+
+
+
+// this is a mixin to convert object attribute queries to
+// JSONQuery/JSONPath syntax to be sent to the server.
+dojo.declare("dojox.data.util.JsonQuery", null, {
+ useFullIdInQueries: false,
+ _toJsonQuery: function(args, jsonQueryPagination){
+ var first = true;
+ var self = this;
+ function buildQuery(path, query){
+ var isDataItem = query.__id;
+ if(isDataItem){
+ // it is a reference to a persisted object, need to make it a query by id
+ var newQuery = {};
+ newQuery[self.idAttribute] = self.useFullIdInQueries ? query.__id : query[self.idAttribute];
+ query = newQuery;
+ }
+ for(var i in query){
+ // iterate through each property, adding them to the overall query
+ var value = query[i];
+ var newPath = path + (/^[a-zA-Z_][\w_]*$/.test(i) ? '.' + i : '[' + dojo._escapeString(i) + ']');
+ if(value && typeof value == "object"){
+ buildQuery(newPath, value);
+ }else if(value!="*"){ // full wildcards can be ommitted
+ jsonQuery += (first ? "" : "&") + newPath +
+ ((!isDataItem && typeof value == "string" && args.queryOptions && args.queryOptions.ignoreCase) ? "~" : "=") +
+ (self.simplifiedQuery ? encodeURIComponent(value) : dojo.toJson(value));
+ first = false;
+ }
+ }
+ }
+ // performs conversion of Dojo Data query objects and sort arrays to JSONQuery strings
+ if(args.query && typeof args.query == "object"){
+ // convert Dojo Data query objects to JSONQuery
+ var jsonQuery = "[?(";
+ buildQuery("@", args.query);
+ if(!first){
+ // use ' instead of " for quoting in JSONQuery, and end with ]
+ jsonQuery += ")]";
+ }else{
+ jsonQuery = "";
+ }
+ args.queryStr = jsonQuery.replace(/\\"|"/g,function(t){return t == '"' ? "'" : t;});
+ }else if(!args.query || args.query == '*'){
+ args.query = "";
+ }
+
+ var sort = args.sort;
+ if(sort){
+ // if we have a sort order, add that to the JSONQuery expression
+ args.queryStr = args.queryStr || (typeof args.query == 'string' ? args.query : "");
+ first = true;
+ for(i = 0; i < sort.length; i++){
+ args.queryStr += (first ? '[' : ',') + (sort[i].descending ? '\\' : '/') + "@[" + dojo._escapeString(sort[i].attribute) + "]";
+ first = false;
+ }
+ args.queryStr += ']';
+ }
+ // this is optional because with client side paging JSONQuery doesn't yield the total count
+ if(jsonQueryPagination && (args.start || args.count)){
+ // pagination
+ args.queryStr = (args.queryStr || (typeof args.query == 'string' ? args.query : "")) +
+ '[' + (args.start || '') + ':' + (args.count ? (args.start || 0) + args.count : '') + ']';
+ }
+ if(typeof args.queryStr == 'string'){
+ args.queryStr = args.queryStr.replace(/\\"|"/g,function(t){return t == '"' ? "'" : t;});
+ return args.queryStr;
+ }
+ return args.query;
+ },
+ jsonQueryPagination: true,
+ fetch: function(args){
+ this._toJsonQuery(args, this.jsonQueryPagination);
+ return this.inherited(arguments);
+ },
+ isUpdateable: function(){
+ return true;
+ },
+ matchesQuery: function(item,request){
+ request._jsonQuery = request._jsonQuery || dojox.json.query(this._toJsonQuery(request));
+ return request._jsonQuery([item]).length;
+ },
+ clientSideFetch: function(/*Object*/ request,/*Array*/ baseResults){
+ request._jsonQuery = request._jsonQuery || dojox.json.query(this._toJsonQuery(request));
+ // we use client side paging function here instead of JSON Query because we must also determine the total count
+ return this.clientSidePaging(request, request._jsonQuery(baseResults));
+ },
+ querySuperSet: function(argsSuper,argsSub){
+ if(!argsSuper.query){
+ return argsSub.query;
+ }
+ return this.inherited(arguments);
+ }
+
+});
+
+}
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