/**
* 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.box.server.robots.operations;
import com.google.wave.api.InvalidRequestException;
import com.google.wave.api.JsonRpcConstant.ParamsProperty;
import com.google.wave.api.OperationRequest;
import com.google.wave.api.data.converter.ContextResolver;
import com.google.wave.api.data.converter.EventDataConverter;
import com.google.wave.api.event.WaveletFetchedEvent;
import com.google.wave.api.impl.EventMessageBundle;
import com.google.wave.api.impl.WaveletData;
import org.waveprotocol.box.server.robots.OperationContext;
import org.waveprotocol.box.server.robots.util.ConversationUtil;
import org.waveprotocol.box.server.robots.util.OperationUtil;
import org.waveprotocol.wave.model.conversation.Conversation;
import org.waveprotocol.wave.model.conversation.ObservableConversation;
import org.waveprotocol.wave.model.wave.ParticipantId;
import org.waveprotocol.wave.model.wave.Wavelet;
import org.waveprotocol.wave.model.wave.opbased.OpBasedWavelet;
/**
* {@link OperationService} for the "fetchWave" operation.
*
* @author ljvderijk@google.com (Lennard de Rijk)
*/
public class FetchWaveService implements OperationService {
private FetchWaveService() {
}
@Override
public void execute(
OperationRequest operation, OperationContext context, ParticipantId participant)
throws InvalidRequestException {
OpBasedWavelet wavelet = context.openWavelet(operation, participant);
ObservableConversation conversation =
context.openConversation(operation, participant).getRoot();
EventMessageBundle messages =
mapWaveletToMessageBundle(context.getConverter(), participant, wavelet, conversation);
String rootBlipId = ConversationUtil.getRootBlipId(conversation);
String message = OperationUtil.getOptionalParameter(operation, ParamsProperty.MESSAGE);
WaveletFetchedEvent event =
new WaveletFetchedEvent(null, null, participant.getAddress(), System.currentTimeMillis(),
message, rootBlipId, messages.getWaveletData(), messages.getBlipData(),
messages.getThreads(), null, null);
context.processEvent(operation, event);
}
/**
* Maps a wavelet and its conversation to a new {@link EventMessageBundle}.
*
* @param converter to convert to API objects.
* @param participant the participant who the bundle is for.
* @param wavelet the wavelet to put in the bundle.
* @param conversation the conversation to put in the bundle.
*/
private EventMessageBundle mapWaveletToMessageBundle(EventDataConverter converter,
ParticipantId participant, Wavelet wavelet, Conversation conversation) {
EventMessageBundle messages = new EventMessageBundle(participant.getAddress(), "");
WaveletData waveletData = converter.toWaveletData(wavelet, conversation, messages);
messages.setWaveletData(waveletData);
ContextResolver.addAllBlipsToEventMessages(messages, conversation, wavelet, converter);
return messages;
}
public static FetchWaveService create() {
return new FetchWaveService();
}
}