studio.raptor.sqlparser.dialect.odps.ast.OdpsSelectQueryBlock Maven / Gradle / Ivy

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/*
 * 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 studio.raptor.sqlparser.dialect.odps.ast;

import java.util.ArrayList;
import java.util.List;
import studio.raptor.sqlparser.SQLUtils;
import studio.raptor.sqlparser.ast.SQLExpr;
import studio.raptor.sqlparser.ast.SQLHint;
import studio.raptor.sqlparser.ast.SQLOrderBy;
import studio.raptor.sqlparser.ast.statement.SQLSelectOrderByItem;
import studio.raptor.sqlparser.ast.statement.SQLSelectQueryBlock;
import studio.raptor.sqlparser.dialect.odps.visitor.OdpsASTVisitor;
import studio.raptor.sqlparser.visitor.SQLASTVisitor;

public class OdpsSelectQueryBlock extends SQLSelectQueryBlock {

  protected List hints;
  protected List distributeBy = new ArrayList();
  protected List sortBy = new ArrayList(2);
  private SQLOrderBy orderBy;

  public OdpsSelectQueryBlock() {

  }

  public SQLOrderBy getOrderBy() {
    return orderBy;
  }

  public void setOrderBy(SQLOrderBy orderBy) {
    this.orderBy = orderBy;
  }

  public List getDistributeBy() {
    return distributeBy;
  }

  public List getSortBy() {
    return sortBy;
  }

  @Override
  public int hashCode() {
    final int prime = 31;
    int result = 1;
    result = prime * result + ((limit == null) ? 0 : limit.hashCode());
    return result;
  }

  @Override
  public boolean equals(Object obj) {
    if (!super.equals(obj)) {
      return false;
    }

    OdpsSelectQueryBlock other = (OdpsSelectQueryBlock) obj;
    if (limit == null) {
      if (other.limit != null) {
        return false;
      }
    } else if (!limit.equals(other.limit)) {
      return false;
    }
    return true;
  }

  public List getHintsDirect() {
    return hints;
  }

  public List getHints() {
    if (hints == null) {
      hints = new ArrayList(2);
    }
    return hints;
  }

  public void setHints(List hints) {
    this.hints = hints;
  }

  @Override
  protected void accept0(SQLASTVisitor visitor) {
    if (visitor instanceof OdpsASTVisitor) {
      accept0((OdpsASTVisitor) visitor);
      return;
    }

    super.accept0(visitor);
  }

  public void accept0(OdpsASTVisitor visitor) {
    if (visitor.visit(this)) {
      acceptChild(visitor, this.hints);
      acceptChild(visitor, this.selectList);
      acceptChild(visitor, this.from);
      acceptChild(visitor, this.where);
      acceptChild(visitor, this.groupBy);
      acceptChild(visitor, this.orderBy);
      acceptChild(visitor, this.distributeBy);
      acceptChild(visitor, this.sortBy);
      acceptChild(visitor, this.limit);
      acceptChild(visitor, this.into);
    }

    visitor.endVisit(this);
  }

  public String toString() {
    return SQLUtils.toOdpsString(this);
  }
}