content: package com.alibaba.druid.sql.dialect.clickhouse.ast;
  
  import com.alibaba.druid.sql.ast.SQLExpr;
  import com.alibaba.druid.sql.dialect.clickhouse.visitor.CKASTVisitor;
  import com.alibaba.druid.sql.visitor.SQLASTVisitor;
  
  public class ClickhouseColumnCodec extends ClickhouseColumnConstraint {
      private SQLExpr expr;
      public ClickhouseColumnCodec() {
          super();
      }
      public SQLExpr getExpr() {
          return expr;
      }
  
      public void setExpr(SQLExpr expr) {
          this.expr = expr;
      }
      @Override
      protected void accept0(SQLASTVisitor v) {
          if (v instanceof CKASTVisitor) {
              CKASTVisitor vv = (CKASTVisitor) v;
              if (vv.visit(this)) {
                  acceptChild(vv, expr);
              }
              vv.endVisit(this);
          }
      }
  
      @Override
      public ClickhouseColumnCodec clone() {
          ClickhouseColumnCodec clickhouseColumnCodec = new ClickhouseColumnCodec();
          super.cloneTo(clickhouseColumnCodec);
          clickhouseColumnCodec.setExpr(expr.clone());
          return clickhouseColumnCodec;
      }
  }
  