private PrimaryVersionSpec resolvePrimaryVersionSpec(
ProjectHistory projectHistory, PrimaryVersionSpec versionSpec)
throws InvalidVersionSpecException {
final int index = versionSpec.getIdentifier();
final String branch = versionSpec.getBranch();
final int versions = projectHistory.getVersions().size();
if (0 > index || index >= versions || branch == null) {
throw new InvalidVersionSpecException(
MessageFormat.format(Messages.VersionSubInterfaceImpl_InvalidVersionRequested, index));
}
if (branch.equals(VersionSpec.GLOBAL)) {
return projectHistory.getVersions().get(index).getPrimarySpec();
}
// Get biggest primary version of given branch which is equal or lower
// to the given versionSpec
for (int i = index; i >= 0; i--) {
final Version version = projectHistory.getVersions().get(i);
if (branch.equals(version.getPrimarySpec().getBranch())) {
return version.getPrimarySpec();
}
}
throw new InvalidVersionSpecException(Messages.VersionSubInterfaceImpl_PrimaryVersionNotFound);
}
private Version getVersion(ProjectHistory projectHistory, PrimaryVersionSpec baseVersionSpec) {
if (0 > baseVersionSpec.getIdentifier()
|| baseVersionSpec.getIdentifier() > projectHistory.getVersions().size() - 1) {
return null;
}
final Version version = projectHistory.getVersions().get(baseVersionSpec.getIdentifier());
if (version == null || !version.getPrimarySpec().equals(baseVersionSpec)) {
return null;
}
return version;
}
private PrimaryVersionSpec resolvePagedUpdateVersionSpec(
ProjectHistory projectHistory, PagedUpdateVersionSpec baseVersion) {
int changes = 0;
PrimaryVersionSpec resolvedSpec = baseVersion.getBaseVersionSpec();
int maxChanges = baseVersion.getMaxChanges();
int i = resolvedSpec.getIdentifier();
AbstractChangePackage cp = projectHistory.getVersions().get(i).getChanges();
if (i == projectHistory.getVersions().size() - 1) {
return projectHistory.getVersions().get(i).getPrimarySpec();
}
do {
cp = projectHistory.getVersions().get(++i).getChanges();
} while (cp == null && i < projectHistory.getVersions().size());
// pull at least one change package
if (cp.leafSize() > maxChanges) {
maxChanges = cp.leafSize();
}
while (changes < maxChanges && i < projectHistory.getVersions().size()) {
resolvedSpec = projectHistory.getVersions().get(i).getPrimarySpec();
final Version version = projectHistory.getVersions().get(i);
final AbstractChangePackage changePackage = version.getChanges();
if (changePackage != null) {
final int size = changePackage.leafSize();
if (changes + size >= maxChanges) {
resolvedSpec = projectHistory.getVersions().get(i).getPrimarySpec();
break;
}
changes += size;
}
i += 1;
}
return resolvedSpec;
}
private BranchInfo createNewBranch(
ProjectHistory projectHistory,
PrimaryVersionSpec baseSpec,
PrimaryVersionSpec primarySpec,
BranchVersionSpec branch) {
primarySpec.setBranch(branch.getBranch());
final BranchInfo branchInfo = VersioningFactory.eINSTANCE.createBranchInfo();
branchInfo.setName(branch.getBranch());
branchInfo.setSource(ModelUtil.clone(baseSpec));
branchInfo.setHead(ModelUtil.clone(primarySpec));
projectHistory.getBranches().add(branchInfo);
return branchInfo;
}
/**
* Returns a list of versions starting from source and ending with target. This method returns the
* version always in an ascanding order. So if you need it ordered differently you have to reverse
* the list.
*
* @param projectId project id
* @param source source
* @param target target
* @return list of versions
* @throws ESException if source or target are out of range or any other problem occurs
*/
protected List<Version> getVersions(
ProjectId projectId, PrimaryVersionSpec source, PrimaryVersionSpec target)
throws ESException {
if (source.compareTo(target) < 1) {
final ProjectHistory projectHistory =
getSubInterface(ProjectSubInterfaceImpl.class).getProject(projectId);
final Version sourceVersion = getVersion(projectHistory, source);
final Version targetVersion = getVersion(projectHistory, target);
if (sourceVersion == null || targetVersion == null) {
throw new InvalidVersionSpecException(Messages.VersionSubInterfaceImpl_NoSourceNorTarget);
}
final List<Version> result = new ArrayList<Version>();
// since the introduction of branches the versions are collected
// in different order.
Version currentVersion = targetVersion;
while (currentVersion != null) {
result.add(currentVersion);
if (currentVersion.equals(sourceVersion)) {
break;
}
if (currentVersion.getPrimarySpec().compareTo(sourceVersion.getPrimarySpec()) < 0) {
// walked too far, invalid path.
throw new InvalidVersionSpecException(Messages.VersionSubInterfaceImpl_InvalidPath);
}
// Shortcut for most common merge usecase: If you have 2
// parallel branches and merge several times
// from the one branch into the another.
if (currentVersion.getMergedFromVersion().contains(sourceVersion)) {
// add sourceVersion because #getChanges always removes
// the first version
result.add(sourceVersion);
break;
}
currentVersion = findNextVersion(currentVersion);
}
// versions are collected in descending order, so the result has to be reversed.
Collections.reverse(result);
return result;
}
return getVersions(projectId, target, source);
}
private Version performRegularCommit(
PrimaryVersionSpec baseVersionSpec,
LogMessage logMessage,
final ACUser user,
final ProjectHistory projectHistory,
final BranchInfo baseBranch,
final Version baseVersion,
final Project newProjectState)
throws ESUpdateRequiredException, ESException {
Version newVersion;
// If branch is null or branch equals base branch, create new
// version for specific branch
if (!baseVersionSpec.equals(isHeadOfBranch(projectHistory, baseVersion.getPrimarySpec()))) {
throw new ESUpdateRequiredException();
}
newVersion = createVersion(projectHistory, newProjectState, logMessage, user, baseVersion);
newVersion.setPreviousVersion(baseVersion);
baseBranch.setHead(ModelUtil.clone(newVersion.getPrimarySpec()));
return newVersion;
}
/**
* Returns all changes within the specified version range for a given project.
*
* @param projectId the ID of a project
* @param source the source version
* @param target the target version (inclusive)
* @return a list of change packages containing all the changes for the specified version range
* @throws InvalidVersionSpecException if an invalid version has been specified
* @throws ESException in case of failure
*/
@ESMethod(MethodId.GETCHANGES)
public List<AbstractChangePackage> getChanges(
ProjectId projectId, VersionSpec source, VersionSpec target)
throws InvalidVersionSpecException, ESException {
sanityCheckObjects(projectId, source, target);
final PrimaryVersionSpec resolvedSource = resolveVersionSpec(projectId, source);
final PrimaryVersionSpec resolvedTarget = resolveVersionSpec(projectId, target);
// if target and source are equal return empty list
if (resolvedSource.getIdentifier() == resolvedTarget.getIdentifier()) {
return new ArrayList<AbstractChangePackage>();
}
synchronized (getMonitor()) {
final boolean updateForward = resolvedTarget.getIdentifier() > resolvedSource.getIdentifier();
// Example: if you want the changes to get from version 5 to 7, you
// need the changes contained in version 6
// and 7. The reason is that each version holds the changes which
// occurred from the predecessor to the
// version itself. Version 5 holds the changes to get from version 4
// to 5 and therefore is irrelevant.
// For that reason the first version is removed, since getVersions
// always sorts ascending order.
final List<Version> versions = getVersions(projectId, resolvedSource, resolvedTarget);
if (versions.size() > 1) {
versions.remove(0);
}
List<AbstractChangePackage> result = new ArrayList<AbstractChangePackage>();
for (final Version version : versions) {
final AbstractChangePackage changes = version.getChanges();
if (changes != null) {
changes.setLogMessage(ModelUtil.clone(version.getLogMessage()));
result.add(changes);
}
}
// if source is after target in time
if (!updateForward) {
// reverse list and change packages
final List<AbstractChangePackage> resultReverse = new ArrayList<AbstractChangePackage>();
for (final AbstractChangePackage changePackage : result) {
final ChangePackage changePackageReverse =
VersioningFactory.eINSTANCE.createChangePackage();
final ESCloseableIterable<AbstractOperation> reversedOperations =
changePackage.reversedOperations();
final ArrayList<AbstractOperation> copiedReversedOperations =
new ArrayList<AbstractOperation>();
try {
for (final AbstractOperation op : reversedOperations.iterable()) {
copiedReversedOperations.add(op.reverse());
}
} finally {
reversedOperations.close();
}
for (final AbstractOperation reversedOperation : copiedReversedOperations) {
changePackageReverse.add(reversedOperation);
}
// copy again log message
// reverse() created a new change package without copying
// existent attributes
changePackageReverse.setLogMessage(ModelUtil.clone(changePackage.getLogMessage()));
resultReverse.add(changePackageReverse);
}
Collections.reverse(resultReverse);
result = resultReverse;
}
return result;
}
}