/**
* diqube: Distributed Query Base.
*
* Copyright (C) 2015 Bastian Gloeckle
*
* This file is part of diqube.
*
* diqube is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as
* published by the Free Software Foundation, either version 3 of the
* License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
package org.diqube.diql.request;
import java.util.ArrayList;
import java.util.List;
/**
* Represents the column to GROUP BY in a select stmt.
*
* <p>
* Correctly implements {@link Object#equals(Object)} and {@link Object#hashCode()}.
*
* @author Bastian Gloeckle
*/
public class GroupRequest {
public List<String> groupColumns = new ArrayList<String>();
public List<String> getGroupColumns() {
return groupColumns;
}
public void setGroupColumns(List<String> groupColumns) {
this.groupColumns = groupColumns;
}
@Override
public int hashCode() {
final int prime = 31;
int result = 1;
result = prime * result + ((groupColumns == null) ? 0 : groupColumns.hashCode());
return result;
}
@Override
public boolean equals(Object obj) {
if (this == obj)
return true;
if (obj == null)
return false;
if (!(obj instanceof GroupRequest))
return false;
GroupRequest other = (GroupRequest) obj;
if (groupColumns == null) {
if (other.groupColumns != null)
return false;
} else if (!groupColumns.equals(other.groupColumns))
return false;
return true;
}
}