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.statement;
  
  import com.alibaba.druid.sql.ast.SQLCommentHint;
  import com.alibaba.druid.sql.ast.SQLExpr;
  import com.alibaba.druid.sql.ast.SQLObjectImpl;
  import com.alibaba.druid.sql.ast.SQLReplaceable;
  import com.alibaba.druid.sql.ast.expr.SQLBinaryOpExpr;
  import com.alibaba.druid.sql.ast.expr.SQLIntegerExpr;
  import com.alibaba.druid.sql.visitor.SQLASTVisitor;
  
  import java.util.ArrayList;
  import java.util.List;
  
  public class SQLSelectGroupByClause extends SQLObjectImpl implements SQLReplaceable {
      private final List<SQLExpr> items = new ArrayList<SQLExpr>();
      private SQLExpr having;
      private boolean withRollUp;
      private boolean withCube;
  
      private boolean distinct;
      private boolean paren;
  
      public SQLSelectGroupByClause() {
      }
  
      @Override
      protected void accept0(SQLASTVisitor visitor) {
          if (visitor.visit(this)) {
              for (int i = 0; i < this.items.size(); i++) {
                  SQLExpr item = items.get(i);
                  if (item != null) {
                      item.accept(visitor);
                  }
              }
  
              if (having != null) {
                  having.accept(visitor);
              }
          }
  
          visitor.endVisit(this);
      }
  
      public boolean isDistinct() {
          return distinct;
      }
  
      public void setDistinct(boolean distinct) {
          this.distinct = distinct;
      }
  
      public boolean isWithRollUp() {
          return withRollUp;
      }
  
      public void setWithRollUp(boolean withRollUp) {
          this.withRollUp = withRollUp;
      }
  
      public boolean isWithCube() {
          return withCube;
      }
  
      public void setWithCube(boolean withCube) {
          this.withCube = withCube;
      }
  
      public SQLExpr getHaving() {
          return this.having;
      }
  
      public void setHaving(SQLExpr having) {
          if (having != null) {
              having.setParent(this);
          }
  
          this.having = having;
      }
  
      public void addHaving(SQLExpr condition) {
          if (condition == null) {
              return;
          }
  
          if (having == null) {
              having = condition;
          } else {
              having = SQLBinaryOpExpr.and(having, condition);
          }
      }
  
      public List<SQLExpr> getItems() {
          return this.items;
      }
  
      public void setItem(int index, SQLExpr expr) {
          expr.setParent(this);
          this.items.set(index, expr);
      }
  
      public boolean containsItem(SQLExpr item) {
          return this.items.contains(item);
      }
  
      public void addItem(SQLExpr sqlExpr) {
          if (sqlExpr != null) {
              sqlExpr.setParent(this);
              this.items.add(sqlExpr);
          }
      }
  
      public void addItem(int index, SQLExpr sqlExpr) {
          if (sqlExpr != null) {
              sqlExpr.setParent(this);
              this.items.add(index, sqlExpr);
          }
      }
  
      public SQLSelectGroupByClause clone() {
          SQLSelectGroupByClause x = new SQLSelectGroupByClause();
          for (SQLExpr item : items) {
              SQLExpr item2 = item.clone();
              item2.setParent(x);
              x.items.add(item2);
          }
          if (having != null) {
              x.setHaving(having.clone());
          }
          x.withRollUp = withRollUp;
          x.withCube = withCube;
          x.distinct = distinct;
          x.paren = paren;
          if (hint != null) {
              x.setHint(hint.clone());
          }
          return x;
      }
  
      @Override
      public boolean replace(SQLExpr expr, SQLExpr target) {
          if (expr == having) {
              setHaving(target);
              return true;
          }
  
          for (int i = items.size() - 1; i >= 0; i--) {
              if (items.get(i) == expr) {
                  if (target instanceof SQLIntegerExpr) {
                      items.remove(i);
                  } else {
                      items.set(i, target);
                  }
                  return true;
              }
          }
          return false;
      }
  
      public SQLCommentHint getHint() {
          return hint;
      }
  
      public void setHint(SQLCommentHint hint) {
          this.hint = hint;
      }
  
      public boolean isParen() {
          return paren;
      }
  
      public void setParen(boolean paren) {
          this.paren = paren;
      }
  
      @Override
      public boolean equals(Object o) {
          if (this == o) {
              return true;
          }
          if (o == null || getClass() != o.getClass()) {
              return false;
          }
  
          SQLSelectGroupByClause that = (SQLSelectGroupByClause) o;
  
          if (withRollUp != that.withRollUp) {
              return false;
          }
          if (withCube != that.withCube) {
              return false;
          }
          if (distinct != that.distinct) {
              return false;
          }
          if (paren != that.paren) {
              return false;
          }
          if (items != null ? !items.equals(that.items) : that.items != null) {
              return false;
          }
          if (having != null ? !having.equals(that.having) : that.having != null) {
              return false;
          }
          return hint != null ? hint.equals(that.hint) : that.hint == null;
      }
  
      @Override
      public int hashCode() {
          int result = items != null ? items.hashCode() : 0;
          result = 31 * result + (having != null ? having.hashCode() : 0);
          result = 31 * result + (withRollUp ? 1 : 0);
          result = 31 * result + (withCube ? 1 : 0);
          result = 31 * result + (distinct ? 1 : 0);
          result = 31 * result + (paren ? 1 : 0);
          result = 31 * result + (hint != null ? hint.hashCode() : 0);
          return result;
      }
  }
  