ThreadStateSerializer.java

/**
 * Copyright 2010 Google Inc.
 *
 * Licensed 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.waveprotocol.wave.model.supplement;

import org.waveprotocol.wave.model.util.Serializer;

/**
 * Serializer for PrimitiveThreadStates.
 *
 */
public final class ThreadStateSerializer implements Serializer<PrimitiveThreadState> {

  private static final EnumSerializer<ThreadState> TYPE_SERIALIZER =
      new EnumSerializer<ThreadState>(ThreadState.class);

  @Override
  public PrimitiveThreadState fromString(String s) {
    return fromString(s, null);
  }

  @Override
  public PrimitiveThreadState fromString(String s, PrimitiveThreadState defaultValue) {
    ThreadState state = (s != null ? TYPE_SERIALIZER.fromString(s) : null);
    return state != null ? PrimitiveThreadState.of(state, 0) : defaultValue;
  }

  @Override
  public String toString(PrimitiveThreadState x) {
    return (x != null) ? TYPE_SERIALIZER.toString(x.getState()) : null;
  }
}