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// Copyright (C) 2012 The Android Open Source Project
//
// 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 com.google.gerrit.server.change;
import com.google.common.base.Strings;
import com.google.gerrit.common.Nullable;
import com.google.gerrit.entities.Change;
import com.google.gerrit.extensions.restapi.BadRequestException;
import com.google.gerrit.server.ChangeMessagesUtil;
import com.google.gerrit.server.extensions.events.TopicEdited;
import com.google.gerrit.server.git.validators.TopicValidator;
import com.google.gerrit.server.notedb.ChangeUpdate;
import com.google.gerrit.server.update.BatchUpdateOp;
import com.google.gerrit.server.update.ChangeContext;
import com.google.gerrit.server.update.PostUpdateContext;
import com.google.gerrit.server.validators.ValidationException;
import com.google.inject.Inject;
import com.google.inject.assistedinject.Assisted;
public class SetTopicOp implements BatchUpdateOp {
public interface Factory {
SetTopicOp create(@Nullable String topic);
}
private final String topic;
private final TopicEdited topicEdited;
private final ChangeMessagesUtil cmUtil;
private final TopicValidator topicValidator;
private Change change;
private String oldTopicName;
private String newTopicName;
@Inject
public SetTopicOp(
TopicEdited topicEdited,
ChangeMessagesUtil cmUtil,
@Nullable @Assisted String topic,
TopicValidator topicValidator) {
this.topic = topic;
this.topicEdited = topicEdited;
this.cmUtil = cmUtil;
this.topicValidator = topicValidator;
}
@Override
public boolean updateChange(ChangeContext ctx) throws BadRequestException {
change = ctx.getChange();
ChangeUpdate update = ctx.getUpdate(change.currentPatchSetId());
newTopicName = Strings.nullToEmpty(topic);
oldTopicName = Strings.nullToEmpty(change.getTopic());
if (oldTopicName.equals(newTopicName)) {
return false;
}
String summary;
if (oldTopicName.isEmpty()) {
summary = "Topic set to " + newTopicName;
} else if (newTopicName.isEmpty()) {
summary = "Topic " + oldTopicName + " removed";
} else {
summary = String.format("Topic changed from %s to %s", oldTopicName, newTopicName);
}
change.setTopic(Strings.emptyToNull(newTopicName));
try {
update.setTopic(change.getTopic(), topicValidator);
} catch (ValidationException ex) {
throw new BadRequestException(ex.getMessage());
}
cmUtil.setChangeMessage(ctx, summary, ChangeMessagesUtil.TAG_SET_TOPIC);
return true;
}
@Override
public void postUpdate(PostUpdateContext ctx) {
if (change != null) {
topicEdited.fire(ctx.getChangeData(change), ctx.getAccount(), oldTopicName, ctx.getWhen());
}
}
}