modify sql wall rule

src/main/java/com/alibaba/druid/sql/ast/expr/SQLBetweenExpr.java

@@ -34,18 +34,14 @@ public class SQLBetweenExpr extends SQLExprImpl implements Serializable {
     }
 
     public SQLBetweenExpr(SQLExpr testExpr, SQLExpr beginExpr, SQLExpr endExpr){
-
-        this.testExpr = testExpr;
-        this.beginExpr = beginExpr;
-        this.endExpr = endExpr;
+        setTestExpr(testExpr);
+        setBeginExpr(beginExpr);
+        setEndExpr(endExpr);
     }
 
     public SQLBetweenExpr(SQLExpr testExpr, boolean not, SQLExpr beginExpr, SQLExpr endExpr){
-
-        this.testExpr = testExpr;
+        this(testExpr, beginExpr, endExpr);
         this.not = not;
-        this.beginExpr = beginExpr;
-        this.endExpr = endExpr;
     }
 
     public void output(StringBuffer buf) {
@@ -74,6 +70,9 @@ public class SQLBetweenExpr extends SQLExprImpl implements Serializable {
     }
 
     public void setTestExpr(SQLExpr testExpr) {
+        if (testExpr != null) {
+            testExpr.setParent(this);
+        }
         this.testExpr = testExpr;
     }
 
@@ -90,6 +89,9 @@ public class SQLBetweenExpr extends SQLExprImpl implements Serializable {
     }
 
     public void setBeginExpr(SQLExpr beginExpr) {
+        if (beginExpr != null) {
+            beginExpr.setParent(this);
+        }
         this.beginExpr = beginExpr;
     }
 
@@ -98,6 +100,9 @@ public class SQLBetweenExpr extends SQLExprImpl implements Serializable {
     }
 
     public void setEndExpr(SQLExpr endExpr) {
+        if (endExpr != null) {
+            endExpr.setParent(this);
+        }
         this.endExpr = endExpr;
     }
 

src/main/java/com/alibaba/druid/sql/ast/expr/SQLQueryExpr.java

@@ -31,8 +31,7 @@ public class SQLQueryExpr extends SQLExprImpl implements Serializable {
     }
 
     public SQLQueryExpr(SQLSelect select){
-
-        this.subQuery = select;
+        setSubQuery(select);
     }
 
     public SQLSelect getSubQuery() {
@@ -40,6 +39,9 @@ public class SQLQueryExpr extends SQLExprImpl implements Serializable {
     }
 
     public void setSubQuery(SQLSelect subQuery) {
+        if (subQuery != null) {
+            subQuery.setParent(this);
+        }
         this.subQuery = subQuery;
     }