/*
* 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.lens.server.query.collect;
import java.util.Set;
import org.apache.lens.server.api.query.QueryContext;
/**
*
* {@link MutableQueryCollection} interface defines all mutable behaviours on queries existing in lens system.
*
* Responsibility of implementations of this interface is to make sure that if multiple views are created for the
* collection of queries, then they should remain consistent with each other after mutable behaviours are executed.
*
*/
public interface MutableQueryCollection {
/**
* add the given query to existing queries
*
* @param query
* @return
*/
boolean add(final QueryContext query);
/**
*
* @param queries
* @return
*/
boolean addAll(final Set<QueryContext> queries);
/**
* removes given query from existing queries
*
* @param query
* @return
*/
boolean remove(final QueryContext query);
/**
*
* @param queries
*/
boolean removeAll(final Set<QueryContext> queries);
}