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.dialect.oracle.ast.stmt;
  
  import com.alibaba.druid.DbType;
  import com.alibaba.druid.sql.ast.SQLExpr;
  import com.alibaba.druid.sql.ast.SQLHint;
  import com.alibaba.druid.sql.ast.SQLReplaceable;
  import com.alibaba.druid.sql.ast.statement.SQLUpdateStatement;
  import com.alibaba.druid.sql.dialect.oracle.visitor.OracleASTVisitor;
  import com.alibaba.druid.sql.visitor.SQLASTVisitor;
  
  import java.util.ArrayList;
  import java.util.List;
  
  public class OracleUpdateStatement extends SQLUpdateStatement implements OracleStatement, SQLReplaceable {
      private List<SQLHint> hints = new ArrayList<SQLHint>(1);
      private boolean only;
      private String alias;
  
      private final List<SQLExpr> returningInto = new ArrayList<SQLExpr>();
  
      public OracleUpdateStatement() {
          super(DbType.oracle);
      }
  
      public List<SQLExpr> getReturningInto() {
          return returningInto;
      }
  
      public void addReturningInto(SQLExpr returningInto) {
          if (returningInto == null) {
              return;
          }
          returningInto.setParent(this);
          this.returningInto.add(returningInto);
      }
  
      @Override
      protected void accept0(SQLASTVisitor visitor) {
          if (visitor instanceof OracleASTVisitor) {
              accept0((OracleASTVisitor) visitor);
              return;
          }
  
          super.accept(visitor);
      }
  
      @Override
      public void accept0(OracleASTVisitor visitor) {
          if (visitor.visit(this)) {
              acceptChild(visitor, this.hints);
              acceptChild(visitor, tableSource);
              acceptChild(visitor, items);
              acceptChild(visitor, where);
              acceptChild(visitor, returning);
              acceptChild(visitor, returningInto);
          }
          visitor.endVisit(this);
      }
  
      @Override
      public boolean replace(SQLExpr expr, SQLExpr target) {
          boolean replace = super.replace(expr, target);
          if (replace) {
              return true;
          }
  
          for (int i = returningInto.size() - 1; i >= 0; i--) {
              if (returningInto.get(i) == expr) {
                  target.setParent(this);
                  returningInto.set(i, target);
                  return true;
              }
          }
  
          return false;
      }
  
      public String getAlias() {
          return this.alias;
      }
  
      public void setAlias(String alias) {
          this.alias = alias;
      }
  
      public boolean isOnly() {
          return this.only;
      }
  
      public void setOnly(boolean only) {
          this.only = only;
      }
  
      public int getHintsSize() {
          if (hints == null) {
              return 0;
          }
  
          return hints.size();
      }
  
      public List<SQLHint> getHints() {
          if (hints == null) {
              hints = new ArrayList<SQLHint>(2);
          }
          return hints;
      }
  
      public void setHints(List<SQLHint> hints) {
          this.hints = hints;
      }
  
      @Override
      public boolean equals(Object o) {
          if (this == o) {
              return true;
          }
          if (o == null || getClass() != o.getClass()) {
              return false;
          }
  
          OracleUpdateStatement that = (OracleUpdateStatement) o;
  
          if (with != null ? !with.equals(that.getWith()) : that.getWith() != null) {
              return false;
          }
          if (!items.equals(that.getItems())) {
              return false;
          }
          if (where != null ? !where.equals(that.getWhere()) : that.getWhere() != null) {
              return false;
          }
          if (from != null ? !from.equals(that.getFrom()) : that.getFrom() != null) {
              return false;
          }
          if (hints != null ? !hints.equals(that.hints) : that.hints != null) {
              return false;
          }
          if (tableSource != null ? !tableSource.equals(that.tableSource) : that.tableSource != null) {
              return false;
          }
          if (returning != null ? !returning.equals(that.returning) : that.returning != null) {
              return false;
          }
          return orderBy != null ? orderBy.equals(that.orderBy) : that.orderBy == null;
      }
  
      @Override
      public int hashCode() {
          int result = with != null ? with.hashCode() : 0;
          result = 31 * result + items.hashCode();
          result = 31 * result + (where != null ? where.hashCode() : 0);
          result = 31 * result + (from != null ? from.hashCode() : 0);
          result = 31 * result + (tableSource != null ? tableSource.hashCode() : 0);
          result = 31 * result + (returning != null ? returning.hashCode() : 0);
          result = 31 * result + (orderBy != null ? orderBy.hashCode() : 0);
          result = 31 * result + (hints != null ? hints.hashCode() : 0);
          return result;
      }
  
  }
  