org.apache.olingo.server.api.uri.queryoption.apply.GroupBy Maven / Gradle / Ivy
/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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 org.apache.olingo.server.api.uri.queryoption.apply;
import java.util.List;
import org.apache.olingo.server.api.uri.queryoption.ApplyItem;
import org.apache.olingo.server.api.uri.queryoption.ApplyOption;
/**
* Represents the grouping transformation.
*/
public interface GroupBy extends ApplyItem {
/**
* Gets the items to group.
* @return a non-empty list of {@link GroupByItem}s (but never null
)
*/
List getGroupByItems();
/**
* Gets the apply option to be applied to the grouped items.
* @return an {@link ApplyOption} (but never null
)
*/
ApplyOption getApplyOption();
}