/**
* Copyright (C) 2014-2016 LinkedIn Corp. (pinot-core@linkedin.com)
*
* 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.linkedin.pinot.tools.scan.query;
/**
* Copyright (C) 2014-2015 LinkedIn Corp. (pinot-core@linkedin.com)
*
* 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.
*/
import java.util.List;
public class GroupByOperator {
List<Object> _columns;
public GroupByOperator(List<Object> columns) {
_columns = columns;
}
List<Object> _getGroupBys() {
return _columns;
}
@Override
public boolean equals(Object o) {
if (this == o) {
return true;
}
if (o == null || getClass() != o.getClass()) {
return false;
}
GroupByOperator that = (GroupByOperator) o;
if (_columns == null && that._columns == null) {
return true;
} else if (_columns == null || that._columns == null) {
return false;
} else if (_columns.size() != that._columns.size()) {
return false;
}
int i = 0;
for (Object object : _columns) {
Object otherObject = that._columns.get(i++);
if (!object.toString().equals(otherObject.toString())) {
return false;
}
}
return true;
}
@Override
public int hashCode() {
if (_columns == null || _columns.isEmpty()) {
return 0;
}
int hashCode = 0;
for (Object column : _columns) {
hashCode += 31 * column.hashCode();
}
return hashCode;
}
}