NindoSink.java

/**
 * Copyright 2009 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.document.operation;

import org.waveprotocol.wave.model.operation.OperationException;

/**
 *
 * @author danilatos@google.com (Daniel Danilatos)
 */
public interface NindoSink {

  /**
   * Applies a non invertible op and returns an invertible one
   * @param op
   * @return invertible version of {@code op}
   * @throws OperationException
   */
  DocOp consumeAndReturnInvertible(Nindo op) throws OperationException;

  /**
   * Version that does not throw operation exceptions.
   *
   * @author danilatos@google.com (Daniel Danilatos)
   */
  public interface Silent extends NindoSink {

    @Override
    DocOp consumeAndReturnInvertible(Nindo op);
  }
}