Bug 179737 The MeasureHandle should be able to provide data type info
We are now allow user input expression as measure expression. However this brings difficulties in determine the data type of a measure expression evaluation result. We need MeasureHandle to be enhanced to include the data type info. Please note that data type "any" is not accepted.
model/org.eclipse.birt.report.model/src/org/eclipse/birt/report/model/writer/ModuleWriter.java
}
	}
	/**
	 * Writers the content node out to the file.
	 * 
	 * @param node
	 *            the content node to write out
	 */
	private void writeContentNode( ContentNode node )
	{
		String tagName = node.getName( );
		boolean isCdata = node.isCDATASection( );
		writer.startElement( tagName );
		 attributes
		s = node.getAttributes( );
		Iterator keys = attributes.keySet( ).iterator( );
		while ( keys.hasNext( ) )
		{
			String key = (String) keys.next( );
			String attr = (String) attributes.get( key );
			writer.attribute( key, attr );
		}
		 write the value or the children
		String value = node.getValue( );
		List children = node.getChildren( );
		assert StringUtil.isBlank( value ) || children.isEmpty( );
		if ( !StringUtil.isBlank( value ) )
		{
			if ( isCdata )
				writer.textCDATA( value );