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.expr;
  
  import com.alibaba.druid.sql.ast.SQLExpr;
  import com.alibaba.druid.sql.ast.SQLExprImpl;
  import com.alibaba.druid.sql.ast.SQLObject;
  import com.alibaba.druid.sql.ast.SQLReplaceable;
  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 OracleIsOfTypeExpr extends SQLExprImpl implements OracleExpr, SQLReplaceable {
      private SQLExpr expr;
      private List<SQLExpr> types = new ArrayList<SQLExpr>();
  
      @Override
      public boolean equals(Object o) {
          if (this == o) {
              return true;
          }
          if (o == null || getClass() != o.getClass()) {
              return false;
          }
  
          OracleIsOfTypeExpr that = (OracleIsOfTypeExpr) o;
  
          if (expr != null ? !expr.equals(that.expr) : that.expr != null) {
              return false;
          }
          return types != null ? types.equals(that.types) : that.types == null;
      }
  
      @Override
      public int hashCode() {
          int result = expr != null ? expr.hashCode() : 0;
          result = 31 * result + (types != null ? types.hashCode() : 0);
          return result;
      }
  
      @Override
      protected void accept0(SQLASTVisitor visitor) {
          accept0((OracleASTVisitor) visitor);
      }
  
      @Override
      public void accept0(OracleASTVisitor visitor) {
          if (visitor.visit(this)) {
              acceptChild(visitor, expr);
              acceptChild(visitor, types);
          }
          visitor.endVisit(this);
      }
  
      @Override
      public boolean replace(SQLExpr expr, SQLExpr target) {
          if (this.expr == expr) {
              setExpr(target);
              return true;
          }
  
          for (int i = 0; i < types.size(); i++) {
              if (types.get(i) == expr) {
                  target.setParent(this);
                  types.set(i, target);
                  return true;
              }
          }
  
          return false;
      }
  
      @Override
      public SQLExpr clone() {
          OracleIsOfTypeExpr x = new OracleIsOfTypeExpr();
          if (expr != null) {
              x.setExpr(expr);
          }
          return null;
      }
  
      @Override
      public List<SQLObject> getChildren() {
          List children = new ArrayList<SQLExpr>();
          if (expr != null) {
              children.add(expr);
          }
          children.addAll(types);
          return children;
      }
  
      public SQLExpr getExpr() {
          return expr;
      }
  
      public void setExpr(SQLExpr expr) {
          if (expr != null) {
              expr.setParent(this);
          }
          this.expr = expr;
      }
  
      public List<SQLExpr> getTypes() {
          return types;
      }
  }
  