import jetbrains.buildServer.vcs.SelectPrevBuildPolicy; //导入依赖的package包/类
/**
 * This is a less glorious method than getListFromBuildType() but it's useful when all you need is to find the last
 * change for a build. For that job, calling getListFromBuildType() would be an overkill because
 * 1) it iterates the full history and this is not needed (as explained by JetBrains in
 *    https://devnet.jetbrains.com/message/5561032)
 * 2) it also collects the changeDeltas which is more expensive (it requires that you *finish* the iteration of the
 *    full history - whereas finding the last change can terminate the iteration prematurely)
 * @param build the build for which to find the last change
 * @return the last change that went into the build
 */
static SVcsModification getLastChange(SFinishedBuild build) {
    BuildPromotion buildPromotion = build.getBuildPromotion();
    while (buildPromotion != null && buildPromotion.getContainingChanges().isEmpty())
        buildPromotion = buildPromotion.getPreviousBuildPromotion(SelectPrevBuildPolicy.SINCE_LAST_BUILD);

    if (buildPromotion == null)
        return null;

    return buildPromotion.getContainingChanges().get(0);
}
 

import jetbrains.buildServer.vcs.SelectPrevBuildPolicy; //导入依赖的package包/类
@SuppressWarnings("unchecked")
private List<? extends VcsModification> changesInBuild(Optional<? extends Build> latestBuild) {
    if (latestBuild.isPresent()) {
        return latestBuild.get().getChanges(SelectPrevBuildPolicy.SINCE_LAST_SUCCESSFULLY_FINISHED_BUILD, true);
    } else {
        return Lists.newArrayList();
    }
}
 

import jetbrains.buildServer.vcs.SelectPrevBuildPolicy; //导入依赖的package包/类
public List<SVcsModification> getChanges(SelectPrevBuildPolicy arg0,
		boolean arg1) {
	// TODO Auto-generated method stub
	return null;
}
 

import jetbrains.buildServer.vcs.SelectPrevBuildPolicy; //导入依赖的package包/类
public UserSet<SUser> getCommitters(SelectPrevBuildPolicy arg0) {
	// TODO Auto-generated method stub
	return null;
}
 

import jetbrains.buildServer.vcs.SelectPrevBuildPolicy; //导入依赖的package包/类
private List<SVcsModification> getChanges() throws Exception {
    // use a linked set to avoid duplicates and to keep the changes in descending order
    Set<SVcsModification> changeList = new LinkedHashSet<SVcsModification>();
    BuildPromotion buildPromotion = newBuild.getBuildPromotion();

    // find oldBuildchange, the changelist of oldBuild; in the while loop below, reaching oldBuildChange will be our
    // terminating condition
    // NB: oldBuildChange will be null if oldBuild was executed before any VCS was attached to the build
    // configuration; otherwise oldBuild really should have a change associated with it
    SVcsModification oldBuildChange = null;
    if (oldBuild != null) {
        oldBuildChange = FinishedBuildWithChanges.getLastChange(oldBuild);
    }

    while (true) {
        if (oldBuildChange == null) {
            // we are supposed to search all the way to Big Bang
            if (buildPromotion == null) {
                // we have reached Big Bang
                return new ArrayList<SVcsModification>(changeList);
            }
            else {
                // keep going; we haven't reached Big Bang yet
            }
        }
        else {
            // we should only go as far as oldBuildChange
            if (buildPromotion == null) {
                // we have reached Big Bang and never found oldBuildChange
                throw new Exception("Could not find changes between " + oldBuild + " and " + newBuild);
            }
            else if (buildPromotion.getContainingChanges().contains(oldBuildChange)) {
                // we have reached oldBuildChange
                changeList.addAll(buildPromotion.getContainingChanges().subList(0, buildPromotion.getContainingChanges().indexOf(oldBuildChange)));
                return new ArrayList<SVcsModification>(changeList);
            }
            else {
                // keep going; we haven't seen oldBuildChange yet
            }
        }

        Loggers.SERVER.debug("[SinCity] build promotion " + buildPromotion);
        Loggers.SERVER.debug("[SinCity] changes " + buildPromotion.getContainingChanges());
        changeList.addAll(buildPromotion.getContainingChanges());
        buildPromotion = buildPromotion.getPreviousBuildPromotion(SelectPrevBuildPolicy.SINCE_LAST_BUILD);
    }
}
 

import jetbrains.buildServer.vcs.SelectPrevBuildPolicy; //导入依赖的package包/类
@SuppressWarnings("unchecked")
private List<? extends VcsModification> changesInBuild(Build latestBuild) {
    return latestBuild.getChanges(SelectPrevBuildPolicy.SINCE_LAST_SUCCESSFULLY_FINISHED_BUILD, true);
}
 

import jetbrains.buildServer.vcs.SelectPrevBuildPolicy; //导入依赖的package包/类
@NotNull
@Override
public List<SVcsModification> getChanges(SelectPrevBuildPolicy selectPrevBuildPolicy, boolean b) {
    return null;
}
 

import jetbrains.buildServer.vcs.SelectPrevBuildPolicy; //导入依赖的package包/类
@Override
public UserSet<SUser> getCommitters(SelectPrevBuildPolicy selectPrevBuildPolicy) {
    return null;
}
 

import jetbrains.buildServer.vcs.SelectPrevBuildPolicy; //导入依赖的package包/类
public List<SVcsModification> getBuildChanges() {
    buildInfo.getChanges(SelectPrevBuildPolicy.SINCE_LAST_BUILD, true);
    return buildInfo.getContainingChanges();
}