content: /*
   * Copyright 1999-2017 Alibaba Group Holding Ltd.
   *
   * Licensed under the Apache License, Version 2.0 (the "License");
   * you may not use this file except in compliance with the License.
   * You may obtain a copy of the License at
   *
   *      http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License.
   */
  package com.alibaba.druid.sql.ast.expr;
  
  import com.alibaba.druid.sql.ast.*;
  import com.alibaba.druid.sql.ast.statement.SQLSelect;
  import com.alibaba.druid.sql.ast.statement.SQLSelectQueryBlock;
  import com.alibaba.druid.sql.visitor.SQLASTVisitor;
  
  import java.io.Serializable;
  import java.util.Arrays;
  import java.util.List;
  
  public class SQLInSubQueryExpr extends SQLExprImpl implements Serializable, SQLReplaceable {
      private static final long serialVersionUID = 1L;
      private boolean not;
      private SQLExpr expr;
  
      public SQLSelect subQuery;
  
      // for ads query hint
      public SQLCommentHint hint;
  
      // for clickhouse
      private boolean global;
  
      public SQLInSubQueryExpr() {
      }
  
      public SQLInSubQueryExpr(SQLSelect select) {
          setSubQuery(select);
      }
  
      public SQLInSubQueryExpr(SQLExpr expr, SQLSelectQueryBlock queryBlock) {
          setExpr(expr);
          setSubQuery(new SQLSelect(queryBlock));
      }
  
      public SQLInSubQueryExpr clone() {
          SQLInSubQueryExpr x = new SQLInSubQueryExpr();
          x.not = not;
          x.global = global;
          if (expr != null) {
              x.setExpr(expr.clone());
          }
          if (subQuery != null) {
              x.setSubQuery(subQuery.clone());
          }
          return x;
      }
  
      public boolean isNot() {
          return not;
      }
  
      public void setNot(boolean not) {
          this.not = not;
      }
  
      public SQLExpr getExpr() {
          return expr;
      }
  
      public void setExpr(SQLExpr expr) {
          if (expr != null) {
              expr.setParent(this);
          }
          this.expr = expr;
      }
  
      public SQLSelect getSubQuery() {
          return this.subQuery;
      }
  
      public void setSubQuery(SQLSelect x) {
          if (x != null) {
              x.setParent(this);
          }
          this.subQuery = x;
      }
  
      @Override
      protected void accept0(SQLASTVisitor visitor) {
          if (visitor.visit(this)) {
              if (this.expr != null) {
                  this.expr.accept(visitor);
              }
  
              if (this.subQuery != null) {
                  this.subQuery.accept(visitor);
              }
          }
  
          visitor.endVisit(this);
      }
  
      public List<SQLObject> getChildren() {
          return Arrays.<SQLObject>asList(this.expr, this.subQuery);
      }
  
      @Override
      public int hashCode() {
          final int prime = 31;
          int result = 1;
          result = prime * result + ((expr == null) ? 0 : expr.hashCode());
          result = prime * result + (not ? 1231 : 1237);
          result = prime * result + (global ? 1231 : 1237);
          result = prime * result + ((subQuery == null) ? 0 : subQuery.hashCode());
          return result;
      }
  
      @Override
      public boolean equals(Object obj) {
          if (this == obj) {
              return true;
          }
          if (obj == null) {
              return false;
          }
          if (getClass() != obj.getClass()) {
              return false;
          }
          SQLInSubQueryExpr other = (SQLInSubQueryExpr) obj;
          if (expr == null) {
              if (other.expr != null) {
                  return false;
              }
          } else if (!expr.equals(other.expr)) {
              return false;
          }
          if (not != other.not) {
              return false;
          }
          if (global != other.global) {
              return false;
          }
          if (subQuery == null) {
              if (other.subQuery != null) {
                  return false;
              }
          } else if (!subQuery.equals(other.subQuery)) {
              return false;
          }
          return true;
      }
  
      public SQLDataType computeDataType() {
          return SQLBooleanExpr.DATA_TYPE;
      }
  
      @Override
      public boolean replace(SQLExpr expr, SQLExpr target) {
          if (this.expr == expr) {
              setExpr(target);
              return true;
          }
          return false;
      }
  
      public SQLCommentHint getHint() {
          return hint;
      }
  
      public void setHint(SQLCommentHint hint) {
          this.hint = hint;
      }
  
      public boolean isGlobal() {
          return global;
      }
  
      public void setGlobal(boolean global) {
          this.global = global;
      }
  }
  