From 162b0becf406cda24eacdd8f1872a47139ea208c Mon Sep 17 00:00:00 2001
From: Carlos Ruiz <carg67@gmail.com>
Date: Mon, 7 May 2012 15:56:25 -0500
Subject: [PATCH] IDEMPIERE-259 Cannot set tab display logic based on specific
 tab value of field Thanks to Ammar (hamur36) for the proposed solution here:
 http://sourceforge.net/projects/adempiere/forums/forum/610547/topic/5087640?message=11256178

---
 .../src/org/compiere/util/Evaluator.java      | 24 ++++++++++++++++---
 1 file changed, 21 insertions(+), 3 deletions(-)

diff --git a/org.adempiere.base/src/org/compiere/util/Evaluator.java b/org.adempiere.base/src/org/compiere/util/Evaluator.java
index 8f9122fce7..2bc3d75d74 100644
--- a/org.adempiere.base/src/org/compiere/util/Evaluator.java
+++ b/org.adempiere.base/src/org/compiere/util/Evaluator.java
@@ -83,7 +83,7 @@ public class Evaluator
 	 *  </code>
 	 *  @param source class implementing get_ValueAsString(variable)
 	 *  @param logic logic string
-	 *  @return locic result
+	 *  @return logic result
 	 */
 	public static boolean evaluateLogic (Evaluatee source, String logic)
 	{
@@ -97,11 +97,29 @@ public class Evaluator
 			return false;
 		}
 
-		boolean retValue = evaluateLogicTuple(source, st.nextToken());
+		String exprStrand = st.nextToken().trim();		
+		if (exprStrand.matches("^@\\d+$"))
+		{
+			exprStrand = exprStrand.concat(st.nextToken());
+			exprStrand = exprStrand.concat(st.nextToken());			
+		}		
+
+		//boolean retValue = evaluateLogicTuple(source, st.nextToken());
+		boolean retValue = evaluateLogicTuple(source, exprStrand);
 		while (st.hasMoreTokens())
 		{
 			String logOp = st.nextToken().trim();
-			boolean temp = evaluateLogicTuple(source, st.nextToken());
+			//boolean temp = evaluateLogicTuple(source, st.nextToken());			
+
+			exprStrand = st.nextToken().trim();		
+			if (exprStrand.matches("^@\\d+$"))
+			{
+				exprStrand = exprStrand.concat(st.nextToken());
+				exprStrand = exprStrand.concat(st.nextToken());				
+			}
+
+			boolean temp = evaluateLogicTuple(source, exprStrand);
+
 			if (logOp.equals("&"))
 				retValue = retValue & temp;
 			else if (logOp.equals("|"))