Bug 199834 Enable access to IContent object in IReportItemPresentation layer
In IReportItemPresentation layer, the extended item may want to access properties from current IContent object, for example, bookmark, content style. So we need expose the content object in this layer.
engine/org.eclipse.birt.report.engine/src/org/eclipse/birt/report/engine/data/dte/QueryResultSet.java
return rs.getBigDecimal( name );
	}
	public Date getDate( String name ) throws BirtException
	{
		return rs.getDate( name );
	}
	public Blob getBlob( String name ) throws BirtException
	{
		return rs.getBlob( name );
	}
	public byte[] getBytes( String name ) throws BirtException
	{
		return rs.getBytes( name );
	}
	public IResultMetaData getResultMetaData( ) throws BirtException
	{
		if ( null == rs )
			return emptyResultMetaData;
		else
			return rs.getResultMetaData( );
	}
	public boolean isEmpty( ) throws BirtException
	{
		if ( rs == null )
		{
			return true;
		}
		return rs.isEmpty( );
	}
	private static class EmptyResultMetaData implements IResultMetaData