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);
}
private List<Record> read(List<RecordId> recordIds, List<FieldType> fields, FieldTypes fieldTypes)
throws RepositoryException, InterruptedException {
long before = System.currentTimeMillis();
try {
ArgumentValidator.notNull(recordIds, "recordIds");
List<Record> records = new ArrayList<Record>();
if (recordIds.isEmpty()) return records;
Map<RecordId, Result> results = getRows(recordIds, fields);
for (Entry<RecordId, Result> entry : results.entrySet()) {
Long version = recdec.getLatestVersion(entry.getValue());
records.add(
recdec.decodeRecord(entry.getKey(), version, null, entry.getValue(), fieldTypes));
}
return records;
} finally {
if (metrics != null) metrics.report(Action.READ, System.currentTimeMillis() - before);
}
}
protected Record read(
RecordId recordId, Long requestedVersion, List<FieldType> fields, FieldTypes fieldTypes)
throws RepositoryException, InterruptedException {
long before = System.currentTimeMillis();
try {
ArgumentValidator.notNull(recordId, "recordId");
Result result = getRow(recordId, requestedVersion, 1, fields);
Long latestVersion = recdec.getLatestVersion(result);
if (requestedVersion == null) {
// Latest version can still be null if there are only non-versioned fields in the record
requestedVersion = latestVersion;
} else {
if (latestVersion == null || latestVersion < requestedVersion) {
// The requested version is higher than the highest existing version
throw new VersionNotFoundException(recordId, requestedVersion);
}
}
return recdec.decodeRecord(recordId, requestedVersion, null, result, fieldTypes);
} finally {
if (metrics != null) metrics.report(Action.READ, System.currentTimeMillis() - before);
}
}