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/src/org/eclipse/birt/data/engine/executor/ResultClass.java
* @return
	 */
	private boolean isOfAnyType( ResultFieldMetadata column )
	{
		return column.getDataType( ).getName( ).equals( AnyType.class.getName( ) );
	}
	
	/**
	 * New an instance of ResultClass from input stream.
	 * 
	 * @param inputStream
	 * @throws DataException
	 */
	public ResultClass( InputStream inputStream ) throws DataException
	{
		assert inputStream != null;
		
		DataInputStream dis = new DataInputStream( inputStream );
		
		try
		{
			List newProjectedColumns = new ArrayList( );
			int size = IOUtil.readInt( dis );
			for ( int i = 0; i < size; i++ )
			{
				int driverPos = IOUtil.readInt( dis );
				String name = IOUtil.readString( dis );
				String lable = IOUtil.readString( dis );
				String alias = IOUtil.readString( dis );
				String dtName = IOUtil.readString( dis );