Bug 123726 "Top n", "Bottom n" in highlight dialog doesn't work.
Description: "Top n", "Bottom n" in highlight dialog doesn't work. Steps to reproduce: 1. Add a highlight for a table. 2. Set highlight rule: "account_id", "top n", "3", let its font color red. 3. Preview the report, it doesn't work. Attached is design file.
data/org.eclipse.birt.data/src/org/eclipse/birt/data/engine/script/ScriptEvalUtil.java
import org.eclipse.birt.data.engine.impl.LogUtil;
import org.mozilla.javascript.Context;
import org.mozilla.javascript.Scriptable;
/**
 * Static utility methods to help evaluating Javascript expressions 
 */
public class ScriptEvalUtil
{	
	private static Logger logger = Logger.getLogger( ScriptEvalUtil.class.getName( ) );
	
	/**
	 * @param exprText
	 * @param value
	 * @return an instance of ExprTextAndValue
	 */
	public static ExprTextAndValue newExprInfo( String exprText, Object value )
	{
		return ExprTextAndValue.newInstance( exprText, value );
	}
	
	/**
	 * Evaluates a conditional expression. A conditional expression comprises of
	 * a Javascript expression, an operator, and up to 2 operands (which are
	 * Javascript expressions themselves).<br>
	 * Both op1 and op2 will be encapsulated to ExprTextAndValue type to show
	 * specific message in case anything goes wrong, they are assumed not to be
	 * null as well.
	 * <p>
	 * The basic rule for comparison: obj will always be considered as the
	 * default data type,i.e. obj, op1 and op2 will be formatted to the superset