Bug 191891 xtab nest in another xtab doesn't display data.[1102]
Description: xtab nest in another xtab doesn't display data. Build number:2.2.0.v200706111025 Steps to reproduce: 1. Insert a xtab. 2. Insert another xtab to first xtab's row area. 3. Preview in web viewer and html (attach report). Expected result: Display data for two xtabs. Actual result: Html display data correctly. Web Viewer can only display data for parent xtab. Error log:N/A
data/org.eclipse.birt.data/src/org/eclipse/birt/data/engine/olap/data/impl/AggregationResultSetSaveUtil.java
String[][] keyNames = convertToMDStringArray( readMDObjectArray( dataInputStream ) );
		int[][] keyDataTypes = readMDIntArray( dataInputStream );
		
		String[][] attributeNames = convertToMDStringArray( readMDObjectArray( dataInputStream ) );
		int[][] attributeDataTypes = readMDIntArray( dataInputStream );
		
		int[] sortTypes = readIntArray( dataInputStream );
		
		
		String[] aggregationNames = convertToStringArray( readObjectArray( dataInputStream ) );
		int[] aggregationDataType = readIntArray( dataInputStream );
		
		
		int size = IOUtil.readInt( dataInputStream );
		
		return new CachedAggregationResultSet( dataInputStream,
				size,
				levels,
				sortTypes,
				keyNames,
				attributeNames,
				keyDataTypes,
				attributeDataTypes,
				aggregationNames,
				aggregationDataType );
	}	
	/**
	 * 
	 * @param objs