/*
* Licensed to CRATE Technology GmbH ("Crate") under one or more contributor
* license agreements. See the NOTICE file distributed with this work for
* additional information regarding copyright ownership. Crate 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.
*
* However, if you have executed another commercial license agreement
* with Crate these terms will supersede the license and you may use the
* software solely pursuant to the terms of the relevant commercial agreement.
*/
package io.crate.planner.node;
import com.google.common.collect.ArrayListMultimap;
import io.crate.operation.NodeOperation;
import java.util.Collection;
import java.util.Map;
public final class NodeOperationGrouper {
private NodeOperationGrouper() {
}
public static Map<String, Collection<NodeOperation>> groupByServer(Iterable<NodeOperation> nodeOperations) {
ArrayListMultimap<String, NodeOperation> byServer = ArrayListMultimap.create();
for (NodeOperation nodeOperation : nodeOperations) {
for (String server : nodeOperation.executionPhase().nodeIds()) {
byServer.put(server, nodeOperation);
}
}
return byServer.asMap();
}
}