diff --git a/src/main/webapp/resources/js/base/dataset.js b/src/main/webapp/resources/js/base/dataset.js
index cf729a2..9d04161 100644
--- a/src/main/webapp/resources/js/base/dataset.js
+++ b/src/main/webapp/resources/js/base/dataset.js
@@ -543,11 +543,16 @@ class Dataset {
 	}
 	
 	_getDataItems(obj, option) {
-		obj = obj || {};
+		obj = obj || [];
+		let array = Array.isArray(obj) ? obj : null;
+		if (!array && this.conf.dataGetter)
+			array = this.conf.dataGetter(obj) || [];
+		array = array || [];
+/*			
 		let array = Array.isArray(obj) ? obj : this.conf.dataGetter(obj) || [];
 		if (!Array.isArray(array))
 			throw new Error("The data must be an array");
-		
+*/		
 		let prefix = "ndx-" + new Date().getTime(),
 			_items = array.map(e => new DataItem(e, this._formats)),
 			_byKeys = {},
@@ -684,7 +689,7 @@ class Dataset {
 	 * @returns {Dataset} the Dataset  
 	 */
 	clear() {
-		this.setData(null);
+		this.setData([]);
 		return this;
 	}
 
@@ -1452,7 +1457,7 @@ class Dataset {
 }
 
 class DatasetControl {
-	constructor(conf) {
+	constructor(conf = {}) {
 		this.prefix = conf.prefix;
 		this.prefixName = conf.prefixName;
 //		this.doctx = conf.doctx || "";
@@ -1726,6 +1731,10 @@ class DatasetControl {
 			this.reload({prev: selected.length == this.dataset.length});
 	}
 	
+	clear() {
+		this.dataset.clear();
+	}
+	
 	selector(selector) {
 		return this.doq.selector(selector);
 	}