content: package com.alibaba.druid.sql.ast.statement;
  
  import com.alibaba.druid.sql.ast.SQLExpr;
  import com.alibaba.druid.sql.ast.SQLName;
  import com.alibaba.druid.sql.ast.SQLReplaceable;
  import com.alibaba.druid.sql.ast.expr.SQLIdentifierExpr;
  import com.alibaba.druid.sql.visitor.SQLASTVisitor;
  
  import java.util.ArrayList;
  import java.util.List;
  
  public class SQLGeneratedTableSource extends SQLTableSourceImpl
          implements SQLReplaceable {
      private final List<SQLExpr> items = new ArrayList<SQLExpr>();
      protected List<SQLName> columns = new ArrayList<SQLName>();
      private SQLIdentifierExpr methodName;
  
      public List<SQLExpr> getItems() {
          return items;
      }
  
      public List<SQLName> getColumns() {
          return columns;
      }
  
      @Override
      protected void accept0(SQLASTVisitor v) {
          if (v.visit(this)) {
              acceptChild(v, methodName);
              acceptChild(v, columns);
              acceptChild(v, items);
              super.accept0(v);
          }
          v.endVisit(this);
      }
  
      @Override
      public boolean replace(SQLExpr expr, SQLExpr target) {
          for (int i = 0; i < items.size(); i++) {
              if (items.get(i) == expr) {
                  target.setParent(this);
                  items.set(i, target);
                  return true;
              }
          }
          if (target instanceof SQLName) {
              SQLName targetName = (SQLName) target;
              for (int i = 0; i < columns.size(); i++) {
                  if (columns.get(i) == expr) {
                      target.setParent(this);
                      columns.set(i, targetName);
                      return true;
                  }
              }
          }
          if (target instanceof SQLIdentifierExpr) {
              if (methodName == expr) {
                  target.setParent(this);
                  methodName = (SQLIdentifierExpr) target;
                  return true;
              }
          }
          return false;
      }
  
      public SQLIdentifierExpr getMethodName() {
          return methodName;
      }
  
      public void setMethodName(SQLIdentifierExpr methodName) {
          this.methodName = methodName;
      }
  }
  