changeBasicMDX fixes

Author: nikitaeverywhere

readme.md

@@ -75,8 +75,7 @@ lp.setFilter("[DateOfSale].[Actual].[YearSold].&[2009]");
 
 lp.refresh(); // refresh pivot contents
 lp.updateSizes(); // recalculate pivot sizes
-lp.changeBasicMDX("..."); // change basic mdx
-lp.getActualMDX(); // get the current mdx
+lp.changeBasicMDX("..."); // change mdx for LPT
 ```
 
 #### Caché DeepSee

source/js/DataSource.js

@@ -18,6 +18,8 @@ var DataSource = function (config, globalConfig, lpt) {
     this.LPT = lpt;
     this.GLOBAL_CONFIG = globalConfig;
 
+    this.BASIC_MDX = config.basicMDX;
+
     /**
      * Name of data source pivot.
      *
@@ -121,7 +123,7 @@ DataSource.prototype.getCurrentData = function (callback) {
 
     var _ = this,
         __ = this._convert,
-        mdx = this.LPT.CONFIG.dataSource["basicMDX"],
+        mdx = this.BASIC_MDX,
         mdxParser = new MDXParser(),
         mdxType = mdxParser.mdxType(mdx),
         ready = {

source/js/LightPivotTable.js

@@ -72,14 +72,24 @@ LightPivotTable.prototype.refresh = function () {
  */
 LightPivotTable.prototype.changeBasicMDX = function (mdx) {
 
+    // return LPT to the first level
+    for (var i = this._dataSourcesStack.length - 1; i > 0; i--) {
+        this.popDataSource();
+        this.pivotView.popTable();
+        this.dataController.popData();
+    }
+    // change MDX
     this.CONFIG.dataSource.basicMDX = mdx;
+    this.dataSource.BASIC_MDX = mdx;
+    // do refresh
     this.refresh();
 
 };
 
 /**
  * Returns current mdx including filters.
  * @returns {string}
+ * @deprecated
  */
 LightPivotTable.prototype.getActualMDX = function () {