private static Put clonePut(Put put, long startId, boolean locking, byte[] columnsWritten) {
Put ret = new Put(put.getRow());
Map<byte[], List<KeyValue>> families = put.getFamilyMap();
Columns cols = new Columns(columnsWritten);
for (byte[] family : families.keySet()) {
List<KeyValue> columns = families.get(family);
Iterator<KeyValue> it = columns.iterator();
while (it.hasNext()) {
KeyValue kv = it.next();
// byte[] column = DominoConst.getColumnKey(kv.getQualifier(), startId);
byte[] qualifier = kv.getQualifier();
ret.add(family, qualifier, startId, kv.getValue());
cols.add(family, qualifier);
}
}
Map<String, byte[]> attributes = put.getAttributesMap();
for (String key : attributes.keySet()) {
ret.setAttribute(key, attributes.get(key));
}
byte[] state = new byte[1 + Bytes.SIZEOF_LONG];
state[0] = locking ? DominoConst.S_STATEFUL_BYTE : DominoConst.S_STATELESS_BYTE;
Bytes.putLong(state, 1, startId);
ret.add(DominoConst.INNER_FAMILY, DominoConst.COLUMNS_COL, startId, cols.toByteArray());
ret.add(DominoConst.INNER_FAMILY, DominoConst.STATUS_COL, startId, state);
return ret;
}
private static Put deletePut(byte[] row, long startId, byte[] columnsWritten) throws IOException {
Columns cols = new Columns(columnsWritten);
Put ret = new Put(row);
byte[] status = new byte[1 + Bytes.SIZEOF_LONG];
status[0] = DominoConst.S_DELETE_BYTE;
Bytes.putLong(status, 1, startId);
ret.add(DominoConst.INNER_FAMILY, DominoConst.COLUMNS_COL, startId, cols.toByteArray());
ret.add(DominoConst.INNER_FAMILY, DominoConst.STATUS_COL, startId, status);
return ret;
}
/**
* Clear the data out of version window & write them to the second lowest version.
*
* @param commit
* @param versions
* @param r
* @param row
* @param isDelete
* @param commitId
* @param startId
* @param lockId
* @return
* @throws IOException
*/
@SuppressWarnings("deprecation")
private boolean addClearColumns(
Put commit,
List<KeyValue> versions,
Result r,
byte[] row,
boolean isDelete,
long commitId,
long startId,
Integer lockId)
throws IOException {
KeyValue commitKV =
new KeyValue(
row,
DominoConst.INNER_FAMILY,
DominoConst.VERSION_COL,
commitId,
DominoConst.versionValue(startId, isDelete));
NavigableSet<KeyValue> orderedVersions = new TreeSet<KeyValue>(MVCC.VERSION_KV_COMPARATOR);
orderedVersions.add(versions.get(versions.size() - 1));
if (versions.size() >= 2) {
orderedVersions.add(versions.get(versions.size() - 2));
}
orderedVersions.add(commitKV);
Iterator<KeyValue> it = orderedVersions.descendingIterator();
KeyValue remove = it.next();
KeyValue prev = it.next();
byte[] removeValue = remove.getValue();
byte[] prevValue = prev.getValue();
long removeCommitId = remove.getTimestamp();
long removeStartId = DominoConst.getVersion(removeValue);
long prevStartId = DominoConst.getVersion(prevValue);
boolean isFresh = (removeCommitId != commitId);
Columns removeCols = new Columns(DominoConst.getColumnsAt(r, removeStartId));
if (!DominoConst.isDeleteVersion(removeValue) && !DominoConst.isDeleteVersion(prevValue)) {
Columns prevCols = new Columns(DominoConst.getColumnsAt(r, prevStartId));
Get get = new Get(row);
get.setTimeStamp(removeStartId);
Result res = region.get(get, lockId);
for (Column col : removeCols.cols) {
if (prevCols.contains(col.family, col.qualifier)) {
continue; // a newer value
}
// merge it
byte[] value = res.getValue(col.family, col.qualifier);
prevCols.add(col.family, col.qualifier);
commit.add(col.family, col.qualifier, prevStartId, value);
}
commit.add(
DominoConst.INNER_FAMILY, DominoConst.COLUMNS_COL, prevStartId, prevCols.toByteArray());
}
if (isFresh) {
commit.add(
new KeyValue(
row,
DominoConst.INNER_FAMILY,
DominoConst.VERSION_COL,
removeCommitId,
KeyValue.Type.Delete));
}
commit.add(
new KeyValue(
row,
DominoConst.INNER_FAMILY,
DominoConst.COLUMNS_COL,
removeStartId,
KeyValue.Type.Delete));
for (Column col : removeCols.cols) {
commit.add(new KeyValue(row, col.family, col.qualifier, removeStartId, KeyValue.Type.Delete));
}
return isFresh;
}