Bug 187201 DTE should give out 4 API for CrossTab sort and filter
DTE should give out 4 API for CrossTab sort and filter. 2 apis are used by giving out the available binding for CrossTab sort and filter. The third is api used by giving out the member value viewer is available. The fourth api is used by giving out the available value list about the memeber value.
data/org.eclipse.birt.data/src/org/eclipse/birt/data/engine/olap/util/OlapExpressionUtil.java
{
	/**
	 * 
	 * @param expr
	 * @return
	 */
	public static boolean isReferenceToDimLevel( String expr )
	{
		if( expr == null )
			return false;
		return expr.matches( "\\Qdimension[\"\\E.*\\Q\"][\"\\E.*\\Q\"]\\E" );
	}
	
	/**
	 * This method is used to get the level name that reference by a level
	 * reference expression of following format:
	 * dimension["dimensionName"]["levelName"].
	 * 
	 * String[0] dimensionName;
	 * String[1] levelName;