Bug 180608 [Regression]NPE throws out when preview the result in dataset[07]
Description: [Regression]NPE throws out when preview the result in dataset[07] Build number: 2.2.0.v20070403-0630 Steps to reproduce: 1, Use attached report 2, Edit Data Set 3, Preview the Data Set Expected result: The preview should be success Actual result: NPE throws out Error log:
data/org.eclipse.birt.data.tests/test/org/eclipse/birt/data/engine/binding/FeaturesTest.java
new GroupDefinition( "group0" ), new GroupDefinition( "group1" )
		};
		groupDefn[0].setKeyExpression( "row.GROUP_COUNTRY" );
		groupDefn[1].setKeyExpression( "row.GROUP_CITY" );
		String[] bindingNameRow = new String[]{
				"ROW_COUNTRY",
				"ROW_CITY",
				"ROW_SALE_DATE",
				"ROW_AMOUNT",
				"ROW_AMOUNT_2",
				"ROW_AMOUNT_3",
				"ROW_AMOUNT_4",
				"ROW_AMOUNT_5",
				"ROW_AMOUNT_6",
				"ROW_AMOUNT_7",
				"ROW_AMOUNT_8",
				"ROW_AMOUNT_9",
				"ROW_AMOUNT_10",
				"ROW_AMOUNT_11",
				"ROW_AMOUNT_12",
				"ROW_AMOUNT_13",
				"ROW_AMOUNT_14",
				"ROW_AMOUNT_15",
				"ROW_AMOUNT_16",
				"ROW_AMOUNT_17",
				"ROW_AMOUNT_18",
				"ROW_AMOUNT_19",
				"ROW_AMOUNT_20",
				"ROW_AMOUNT_21",
				"ROW_AMOUNT_22",