From 4b2724d11826b2e8878b5472dc712b252fa3a7df Mon Sep 17 00:00:00 2001
From: kiki <kiki@Mars.(none)>
Date: Fri, 7 Jun 2013 18:46:17 +0800
Subject: [PATCH] add list judge

---
 .../druid/sql/visitor/SQLEvalVisitorUtils.java     | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/src/main/java/com/alibaba/druid/sql/visitor/SQLEvalVisitorUtils.java b/src/main/java/com/alibaba/druid/sql/visitor/SQLEvalVisitorUtils.java
index 49fe43564d..9d2ac6a147 100644
--- a/src/main/java/com/alibaba/druid/sql/visitor/SQLEvalVisitorUtils.java
+++ b/src/main/java/com/alibaba/druid/sql/visitor/SQLEvalVisitorUtils.java
@@ -797,6 +797,9 @@ public class SQLEvalVisitorUtils {
             wallConditionContext.setConstArithmetic(true);
         }
 
+        leftValue = processValue(leftValue);
+        rightValue = processValue(rightValue);
+
         if (leftValue == null || rightValue == null) {
             return false;
         }
@@ -890,6 +893,17 @@ public class SQLEvalVisitorUtils {
         return false;
     }
 
+    @SuppressWarnings("rawtypes")
+    private static Object processValue(Object value) {
+        if (value instanceof List) {
+            List list = (List) value;
+            if (list.size() == 1) {
+                return processValue(list.get(0));
+            }
+        }
+        return value;
+    }
+
     private static boolean isAlwayTrueLikePattern(SQLExpr x) {
         if (x instanceof SQLCharExpr) {
             String text = ((SQLCharExpr) x).getText();