public List<Record> readVersions(RecordId recordId, List<Long> versions, QName... fieldNames)
throws RepositoryException, InterruptedException {
ArgumentValidator.notNull(recordId, "recordId");
ArgumentValidator.notNull(versions, "versions");
if (versions.isEmpty()) return new ArrayList<Record>();
Collections.sort(versions);
FieldTypes fieldTypes = typeManager.getFieldTypesSnapshot();
List<FieldType> fields = getFieldTypesFromNames(fieldTypes, fieldNames);
Long lowestRequestedVersion = versions.get(0);
Long highestRequestedVersion = versions.get(versions.size() - 1);
int numberOfVersionsToRetrieve = (int) (highestRequestedVersion - lowestRequestedVersion + 1);
Result result = getRow(recordId, highestRequestedVersion, numberOfVersionsToRetrieve, fields);
Long latestVersion = recdec.getLatestVersion(result);
// Drop the versions that are higher than the latestVersion
List<Long> validVersions = new ArrayList<Long>();
for (Long version : versions) {
if (version > latestVersion) break;
validVersions.add(version);
}
return recdec.decodeRecords(recordId, validVersions, result, fieldTypes);
}
public List<Record> readVersions(
RecordId recordId, Long fromVersion, Long toVersion, QName... fieldNames)
throws RepositoryException, InterruptedException {
ArgumentValidator.notNull(recordId, "recordId");
ArgumentValidator.notNull(fromVersion, "fromVersion");
ArgumentValidator.notNull(toVersion, "toVersion");
if (fromVersion > toVersion) {
throw new IllegalArgumentException(
"fromVersion '"
+ fromVersion
+ "' must be smaller or equal to toVersion '"
+ toVersion
+ "'");
}
FieldTypes fieldTypes = typeManager.getFieldTypesSnapshot();
List<FieldType> fields = getFieldTypesFromNames(fieldTypes, fieldNames);
int numberOfVersionsToRetrieve = (int) (toVersion - fromVersion + 1);
Result result = getRow(recordId, toVersion, numberOfVersionsToRetrieve, fields);
if (fromVersion < 1L) fromVersion = 1L; // Put the fromVersion to a sensible value
Long latestVersion = recdec.getLatestVersion(result);
if (latestVersion < toVersion)
toVersion = latestVersion; // Limit the toVersion to the highest possible version
List<Long> versionsToRead = new ArrayList<Long>();
for (long version = fromVersion; version <= toVersion; version++) {
versionsToRead.add(version);
}
return recdec.decodeRecords(recordId, versionsToRead, result, fieldTypes);
}