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.SQLUtils;
  import com.alibaba.druid.sql.ast.*;
  import com.alibaba.druid.sql.visitor.SQLASTVisitor;
  
  import java.util.Arrays;
  import java.util.List;
  
  public class SQLCastExpr extends SQLExprImpl implements SQLObjectWithDataType, SQLReplaceable {
      protected boolean isTry;
      protected SQLExpr expr;
      protected SQLDataType dataType;
      protected SQLExpr format;
  
      public SQLCastExpr() {
      }
  
      public SQLCastExpr(SQLExpr expr, SQLDataType dataType) {
          setExpr(expr);
          setDataType(dataType);
      }
  
      public SQLExpr getExpr() {
          return this.expr;
      }
  
      public void setExpr(SQLExpr expr) {
          if (expr != null) {
              expr.setParent(this);
          }
          this.expr = expr;
      }
  
      public SQLExpr getFormat() {
          return format;
      }
  
      public void setFormat(SQLExpr format) {
          if (format != null) {
              format.setParent(this);
          }
          this.format = format;
      }
  
      public SQLDataType getDataType() {
          return this.dataType;
      }
  
      public long dateTypeHashCode() {
          if (this.dataType == null) {
              return 0;
          }
  
          return this.dataType.nameHashCode64();
      }
  
      public void setDataType(SQLDataType dataType) {
          if (dataType != null) {
              dataType.setParent(this);
          }
          this.dataType = dataType;
      }
  
      protected void accept0(SQLASTVisitor visitor) {
          if (visitor.visit(this)) {
              if (this.expr != null) {
                  this.expr.accept(visitor);
              }
  
              if (this.dataType != null) {
                  this.dataType.accept(visitor);
              }
          }
          visitor.endVisit(this);
      }
  
      @Override
      public List getChildren() {
          return Arrays.asList(this.expr, this.dataType);
      }
  
      @Override
      public boolean equals(Object o) {
          if (this == o) {
              return true;
          }
          if (o == null || getClass() != o.getClass()) {
              return false;
          }
  
          SQLCastExpr castExpr = (SQLCastExpr) o;
  
          if (isTry != castExpr.isTry) {
              return false;
          }
          if (expr != null ? !expr.equals(castExpr.expr) : castExpr.expr != null) {
              return false;
          }
          return dataType != null ? dataType.equals(castExpr.dataType) : castExpr.dataType == null;
      }
  
      @Override
      public int hashCode() {
          int result = (isTry ? 1 : 0);
          result = 31 * result + (expr != null ? expr.hashCode() : 0);
          result = 31 * result + (dataType != null ? dataType.hashCode() : 0);
          return result;
      }
  
      public SQLDataType computeDataType() {
          return dataType;
      }
  
      public SQLCastExpr clone() {
          SQLCastExpr x = new SQLCastExpr();
          x.isTry = isTry;
          if (expr != null) {
              x.setExpr(expr.clone());
          }
          if (dataType != null) {
              x.setDataType(dataType.clone());
          }
          return x;
      }
  
      @Override
      public boolean replace(SQLExpr expr, SQLExpr target) {
          if (this.expr == expr) {
              setExpr(target);
              return true;
          }
          return false;
      }
  
      public boolean isTry() {
          return isTry;
      }
  
      public void setTry(boolean aTry) {
          isTry = aTry;
      }
  
      public String toString() {
          return SQLUtils.toSQLString(this);
      }
  }
  