/**
* Copyright 2008 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.wave.data;
import org.waveprotocol.wave.model.document.operation.DocInitialization;
import org.waveprotocol.wave.model.version.HashedVersion;
import org.waveprotocol.wave.model.wave.ParticipantId;
import java.util.Collection;
public interface WaveletData extends ReadableWaveletData {
/**
* Factory for constructing wavelet data copies.
*
* @param <T> type constructed by this factory.
*/
interface Factory<T extends WaveletData> extends ReadableWaveletData.Factory<T> {}
/**
* Gets a document and its metadata from this wavelet.
*
* @return the requested document container, or null if it doesn't exist
*/
@Override
BlipData getDocument(String documentName);
/**
* Creates a document in this wavelet.
*
* @param id identifier of the document
* @param author author of the new document
* @param contributors participants who have contributed to the document
* @param content initial content of the document
* @param lastModifiedVersion version of last worthy modification
* @param lastModifiedTime epoch time of last worthy modification
* @return the created document
* @throws IllegalStateException if this wavelet already has a document
* with the requested id
*/
BlipData createDocument(String id, ParticipantId author,
Collection<ParticipantId> contributors, DocInitialization content,
long lastModifiedTime, long lastModifiedVersion);
/**
* Adds a participant to this wavelet, ensuring it is in the participants
* collection. The new participant is added to the end of the collection if it
* was not already present.
*
* @param participant participant to add
* @return false if the given participant was already a participant of this
* wavelet.
*/
boolean addParticipant(ParticipantId participant);
/**
* Adds a participant to this wavelet at a specified position in the
* participant list, ensuring it is in the participants collection.
* Implementations of this interface may assume that this is an infrequently
* used method and implement it inefficiently.
*
* @param participant participant to add
* @param position position in participant list where to add the participant
* @return false if the given participant was already a participant of this
* wavelet, in which case its position is unaffected.
* @throws IndexOutOfBoundsException if {@code position < 0} or
* {@code position > getParticipants.size()}.
*/
boolean addParticipant(ParticipantId participant, int position);
/**
* Removes a participant from this wavelet, ensuring it is no longer reflected
* in the participants collection.
*
* @param participant participant to remove
* @return false if the given participant was not a participant of this
* wavelet.
*/
boolean removeParticipant(ParticipantId participant);
/**
* Set the version number of this wavelet.
*
* @param newVersion new version number
* @return the old version number
*/
long setVersion(long newVersion);
/**
* Sets the distinct version of this wavelet.
*
* @param newHashedVersion new distinct version
* @return the old distinct version
*/
HashedVersion setHashedVersion(HashedVersion newHashedVersion);
/**
* Sets the last-modified time of this wavelet.
*
* @param newTime new last-modified time
* @return the old last-modified time
*/
long setLastModifiedTime(long newTime);
}