From 0749616a1df0f5586fdf8802db467c3f5b81f052 Mon Sep 17 00:00:00 2001
From: wenshao <szujobs@hotmail.com>
Date: Thu, 4 Jan 2018 09:43:59 +0800
Subject: [PATCH] SQLBetween implements SQLReplaceable.

---
 .../druid/sql/ast/expr/SQLBetweenExpr.java    | 27 +++++++++++++++----
 1 file changed, 22 insertions(+), 5 deletions(-)

diff --git a/src/main/java/com/alibaba/druid/sql/ast/expr/SQLBetweenExpr.java b/src/main/java/com/alibaba/druid/sql/ast/expr/SQLBetweenExpr.java
index 01c5ac4983..eed2df5fd6 100644
--- a/src/main/java/com/alibaba/druid/sql/ast/expr/SQLBetweenExpr.java
+++ b/src/main/java/com/alibaba/druid/sql/ast/expr/SQLBetweenExpr.java
@@ -20,13 +20,10 @@ import java.util.Arrays;
 import java.util.Collections;
 import java.util.List;
 
-import com.alibaba.druid.sql.ast.SQLDataType;
-import com.alibaba.druid.sql.ast.SQLExpr;
-import com.alibaba.druid.sql.ast.SQLExprImpl;
-import com.alibaba.druid.sql.ast.SQLObject;
+import com.alibaba.druid.sql.ast.*;
 import com.alibaba.druid.sql.visitor.SQLASTVisitor;
 
-public class SQLBetweenExpr extends SQLExprImpl implements Serializable {
+public class SQLBetweenExpr extends SQLExprImpl implements Serializable, SQLReplaceable {
 
     private static final long serialVersionUID = 1L;
     public SQLExpr            testExpr;
@@ -171,4 +168,24 @@ public class SQLBetweenExpr extends SQLExprImpl implements Serializable {
     public SQLDataType computeDataType() {
         return SQLBooleanExpr.DEFAULT_DATA_TYPE;
     }
+
+    @Override
+    public boolean replace(SQLExpr expr, SQLExpr target) {
+        if (expr == testExpr) {
+            setTestExpr(target);
+            return true;
+        }
+
+        if (expr == beginExpr) {
+            setBeginExpr(target);
+            return true;
+        }
+
+        if (expr == endExpr) {
+            setEndExpr(target);
+            return true;
+        }
+
+        return false;
+    }
 }