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.sql.SQLUtils;
  import com.alibaba.druid.sql.ast.SQLExpr;
  import com.alibaba.druid.sql.ast.expr.SQLIdentifierExpr;
  import com.alibaba.druid.sql.ast.statement.SQLExprTableSource;
  import com.alibaba.druid.sql.ast.statement.SQLJoinTableSource;
  import com.alibaba.druid.sql.ast.statement.SQLTableSource;
  import com.alibaba.druid.sql.dialect.oracle.visitor.OracleASTVisitor;
  import com.alibaba.druid.sql.visitor.SQLASTVisitor;
  
  public class OracleSelectJoin extends SQLJoinTableSource implements OracleSelectTableSource {
      public OracleSelectJoin(String alias) {
          super(alias);
      }
  
      public OracleSelectJoin() {
      }
  
      public OracleSelectJoin(SQLTableSource left, JoinType joinType, SQLTableSource right, SQLExpr condition) {
          super(left, joinType, right, condition);
      }
  
      @Override
      protected void accept0(SQLASTVisitor visitor) {
          if (visitor instanceof OracleASTVisitor) {
              this.accept0((OracleASTVisitor) visitor);
          } else {
              super.accept0(visitor);
          }
      }
  
      protected void accept0(OracleASTVisitor visitor) {
          if (visitor.visit(this)) {
              acceptChild(visitor, this.left);
              acceptChild(visitor, this.right);
              acceptChild(visitor, this.condition);
              acceptChild(visitor, this.using);
              acceptChild(visitor, this.flashback);
          }
  
          visitor.endVisit(this);
      }
  
      @Override
      public boolean equals(Object o) {
          if (this == o) {
              return true;
          }
          if (o == null || getClass() != o.getClass()) {
              return false;
          }
          if (!super.equals(o)) {
              return false;
          }
  
          OracleSelectJoin that = (OracleSelectJoin) o;
  
          if (pivot != null ? !pivot.equals(that.pivot) : that.pivot != null) {
              return false;
          }
          if (unpivot != null ? !unpivot.equals(that.unpivot) : that.unpivot != null) {
              return false;
          }
          return flashback != null ? flashback.equals(that.flashback) : that.flashback == null;
      }
  
      @Override
      public int hashCode() {
          int result = pivot != null ? pivot.hashCode() : 0;
          result = 31 * result + (unpivot != null ? unpivot.hashCode() : 0);
          result = 31 * result + (flashback != null ? flashback.hashCode() : 0);
          return result;
      }
  
      public String toString() {
          return SQLUtils.toOracleString(this);
      }
  
      public SQLJoinTableSource clone() {
          OracleSelectJoin x = new OracleSelectJoin();
          cloneTo(x);
  
          if (pivot != null) {
              x.setPivot(pivot.clone());
          }
  
          if (unpivot != null) {
              x.setUnpivot(unpivot.clone());
          }
  
          if (flashback != null) {
              x.setFlashback(flashback.clone());
          }
  
          return x;
      }
  
      public void setLeft(String tableName) {
          SQLExprTableSource tableSource;
          if (tableName == null || tableName.length() == 0) {
              tableSource = null;
          } else {
              tableSource = new OracleSelectTableReference(new SQLIdentifierExpr(tableName));
          }
          this.setLeft(tableSource);
      }
  
      public void setRight(String tableName) {
          SQLExprTableSource tableSource;
          if (tableName == null || tableName.length() == 0) {
              tableSource = null;
          } else {
              tableSource = new OracleSelectTableReference(new SQLIdentifierExpr(tableName));
          }
          this.setRight(tableSource);
      }
  
      public SQLJoinTableSource join(SQLTableSource right, JoinType joinType, SQLExpr condition) {
          SQLJoinTableSource joined = new OracleSelectJoin(this, joinType, right, condition);
          return joined;
      }
  }
  