content: /*
   * 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.bifromq.basecrdt.core.internal;
  
  import org.apache.bifromq.basecrdt.core.api.EWFlagOperation;
  import org.apache.bifromq.basecrdt.proto.Replacement;
  import com.google.protobuf.ByteString;
  
  class EWFlagCoalesceOperation extends CoalesceOperation<IDotSet, EWFlagOperation> {
      EWFlagOperation op;
  
      EWFlagCoalesceOperation(ByteString replicaId, EWFlagOperation op) {
          super(replicaId);
          coalesce(op);
      }
  
      @Override
      public void coalesce(EWFlagOperation op) {
          this.op = op;
      }
  
      @Override
      public Iterable<Replacement> delta(IDotSet current, IEventGenerator eventGenerator) {
          long ver = eventGenerator.nextEvent();
          switch (op.type) {
              case Enable:
                  return ProtoUtils.replacements(ProtoUtils.dot(replicaId, ver,
                      ProtoUtils.singleDot(replicaId, ver)), current);
              case Disable:
              default:
                  return ProtoUtils.replacements(ProtoUtils.dot(replicaId, ver), current);
          }
      }
  }
  