#945 added the rowGroup feature to b:dataTable

src/main/java/net/bootsfaces/component/dataTable/DataTable.java

@@ -265,5 +265,14 @@ public void setMarkSearchResults(boolean _markSearchResults) {
 		}
 		super.setMarkSearchResults(_markSearchResults);
 	}
+
+	/**
+	 * Group the rows by a common column value. Can be a number or a Json-object, as documented at https://datatables.net/reference/option/#rowgroup. <P>
+	 * Usually this method is called internally by the JSF engine.
+	 */
+	public void setRowGroup(String _rowGroup) {
+		AddResourcesListener.addResourceIfNecessary("https://cdn.datatables.net/rowgroup/1.0.2/js/dataTables.rowGroup.min.js");
+		super.setRowGroup(_rowGroup);
+	}
 
 }

src/main/java/net/bootsfaces/component/dataTable/DataTableCore.java

@@ -24,7 +24,7 @@
 public abstract class DataTableCore extends UIData implements net.bootsfaces.render.IHasTooltip {
 
 	protected enum PropertyKeys {
-		ajax, border, colLg, colMd, colSm, colXs, columnVisibility, contentDisabled, copy, csv, customLangUrl, customOptions, delay, deselectOnBackdropClick, disabled, display, excel, fixedHeader, hidden, immediate, info, lang, largeScreen, markSearchResults, mediumScreen, multiColumnSearch, multiColumnSearchPosition, offset, offsetLg, offsetMd, offsetSm, offsetXs, onclick, oncomplete, ondblclick, ondeselect, onerror, onmousedown, onmousemove, onmouseout, onmouseover, onmouseup, onorder, onpage, onsearch, onselect, onsuccess, pageLength, pageLengthMenu, paginated, pdf, print, process, responsive, rowHighlight, rowStyleClass, saveState, scrollCollapse, scrollHorizontally, scrollSize, scrollX, searching, select, selectedColumn, selectedItems, selectedRow, selectionInfo, selectionMode, smallScreen, span, striped, style, styleClass, tinyScreen, tooltip, tooltipContainer, tooltipDelay, tooltipDelayHide, tooltipDelayShow, tooltipPosition, update, visible, widgetVar;
+		ajax, border, colLg, colMd, colSm, colXs, columnVisibility, contentDisabled, copy, csv, customLangUrl, customOptions, delay, deselectOnBackdropClick, disabled, display, excel, fixedHeader, hidden, immediate, info, lang, largeScreen, markSearchResults, mediumScreen, multiColumnSearch, multiColumnSearchPosition, offset, offsetLg, offsetMd, offsetSm, offsetXs, onclick, oncomplete, ondblclick, ondeselect, onerror, onmousedown, onmousemove, onmouseout, onmouseover, onmouseup, onorder, onpage, onsearch, onselect, onsuccess, pageLength, pageLengthMenu, paginated, pdf, print, process, responsive, rowGroup, rowHighlight, rowStyleClass, saveState, scrollCollapse, scrollHorizontally, scrollSize, scrollX, searching, select, selectedColumn, selectedItems, selectedRow, selectionInfo, selectionMode, smallScreen, span, striped, style, styleClass, tinyScreen, tooltip, tooltipContainer, tooltipDelay, tooltipDelayHide, tooltipDelayShow, tooltipPosition, update, visible, widgetVar;
 		String toString;
 
 		PropertyKeys(String toString) {
@@ -903,6 +903,22 @@ public void setResponsive(boolean _responsive) {
 		getStateHelper().put(PropertyKeys.responsive, _responsive);
 	}
 
+	/**
+	 * Group the rows by a common column value. Can be a number or a Json-object, as documented at https://datatables.net/reference/option/#rowgroup. <P>
+	 * @return Returns the value of the attribute, or null, if it hasn't been set by the JSF file.
+	 */
+	public String getRowGroup() {
+		return (String) getStateHelper().eval(PropertyKeys.rowGroup);
+	}
+
+	/**
+	 * Group the rows by a common column value. Can be a number or a Json-object, as documented at https://datatables.net/reference/option/#rowgroup. <P>
+	 * Usually this method is called internally by the JSF engine.
+	 */
+	public void setRowGroup(String _rowGroup) {
+		getStateHelper().put(PropertyKeys.rowGroup, _rowGroup);
+	}
+
 	/**
 	 * Enable the row highlight css. Default: true. <P>
 	 * @return Returns the value of the attribute, or true, if it hasn't been set by the JSF file.

src/main/java/net/bootsfaces/component/dataTable/DataTableRenderer.java

@@ -611,6 +611,18 @@ public void encodeEnd(FacesContext context, UIComponent component) throws IOExce
 		if (selectCommand.length() > 0) {
 			options = addOptions("'initComplete': function( settings, json ) { " + selectCommand + "}", options);
 		}
+
+		if (dataTable.getRowGroup()!=null) {
+			String rowGroup = dataTable.getRowGroup();
+			try {
+				Integer.parseInt(rowGroup);
+				options = addOptions("orderFixed: [" + rowGroup + ", 'asc']", options);
+				rowGroup = "rowGroup:{dataSrc:" + rowGroup + "}";
+			} catch (NumberFormatException itsJson) {
+				// consider it a Json object
+			}			
+			options = addOptions(rowGroup, options);
+		}
 
 		rw.writeText(widgetVar + " = $('." + clientId + "Table" + "');" +
 		// # Get instance of wrapper, and replace it with the unwrapped table.

src/main/meta/META-INF/bootsfaces-b.taglib.xml

@@ -6359,6 +6359,18 @@
 		  <required>false</required>
 		  <type>java.lang.Boolean</type>
 		</attribute>
+		<attribute>
+		  <description><![CDATA[Group the rows by a common column value. Can be a number or a Json-object, as documented at https://datatables.net/reference/option/#rowgroup.]]></description>
+		  <name>row-group</name>
+		  <required>false</required>
+		  <type>java.lang.String</type>
+		</attribute>
+		<attribute>
+		  <description><![CDATA[Group the rows by a common column value. Can be a number or a Json-object, as documented at https://datatables.net/reference/option/#rowgroup.]]></description>
+		  <name>rowGroup</name>
+		  <required>false</required>
+		  <type>java.lang.String</type>
+		</attribute>
 		<attribute>
 		  <description><![CDATA[Enable the row highlight css. Default: true.]]></description>
 		  <name>row-highlight</name>

xtext/BootsFaces.jsfdsl

@@ -562,6 +562,7 @@ widget dataTable
 	paginated            Boolean default "true"                            "Activates the pagination of the dataTable. Default value is 'true'."
 	responsive           Boolean                                           "Activates the responsive plugin of the dataTable"
     rendered             Boolean inherited                                 "Boolean value to specify the rendering of the component, when set to false the component will not be rendered."
+	row-group                                                              "Group the rows by a common column value. Can be a number or a Json-object, as documented at https://datatables.net/reference/option/#rowgroup."
     row-highlight		 Boolean default "true"							 "Enable the row highlight css. Default: true."
     row-style-class                                                        "Optional CSS class for each row. If it's an EL expression, it's evaluated for each row. You can also provide a comma-separated list. In this case, the CSS classes are assigned cyclically to the row."
     save-state           Boolean default "true"                            "Stores the state of the datatable on the client, so that after a page reload the same filters are active, the same page is shown etc."