/*
 * 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.ignite.internal.sql.engine;

/**
 * Describes all possible states of the query.
 */
public enum QueryState {
    /** The query has been initialized and registered, but neither planning nor execution has started yet. */
    INITED,

    /** The planning has been started. This phase implies splitting the query on fragments. */
    PLANNING,

    /** The mapping has been started. At this phase every particular fragment is mapped to a node. */
    MAPPING,

    /** The actual execution has been started. */
    EXECUTING,

    /** The query start to clean up all acquired resources. */
    CLOSING,

    /** The query have been complete and will be unregistered soon. */
    CLOSED
}
