public void add(Session session, Row row) {
boolean retry = false;
if (mainIndexColumn != -1) {
row.setKey(row.getValue(mainIndexColumn).getLong());
} else {
if (row.getKey() == 0) {
row.setKey((int) ++lastKey);
retry = true;
}
}
if (tableData.getContainsLargeObject()) {
for (int i = 0, len = row.getColumnCount(); i < len; i++) {
Value v = row.getValue(i);
Value v2 = v.link(database, getId());
if (v2.isLinked()) {
session.unlinkAtCommitStop(v2);
}
if (v != v2) {
row.setValue(i, v2);
}
}
}
// when using auto-generated values, it's possible that multiple
// tries are required (specially if there was originally a primary key)
if (trace.isDebugEnabled()) {
trace.debug("{0} add {1}", getName(), row);
}
long add = 0;
while (true) {
try {
addTry(session, row);
break;
} catch (DbException e) {
if (e != fastDuplicateKeyException) {
throw e;
}
if (!retry) {
throw getNewDuplicateKeyException();
}
if (add == 0) {
// in the first re-try add a small random number,
// to avoid collisions after a re-start
row.setKey((long) (row.getKey() + Math.random() * 10000));
} else {
row.setKey(row.getKey() + add);
}
add++;
} finally {
store.incrementChangeCount();
}
}
lastKey = Math.max(lastKey, row.getKey());
}
public void remove(Session session, Row row) {
if (tableData.getContainsLargeObject()) {
for (int i = 0, len = row.getColumnCount(); i < len; i++) {
Value v = row.getValue(i);
if (v.isLinked()) {
session.unlinkAtCommit(v);
}
}
}
if (trace.isDebugEnabled()) {
trace.debug("{0} remove {1}", getName(), row);
}
if (rowCount == 1) {
removeAllRows();
} else {
try {
long key = row.getKey();
PageData root = getPage(rootPageId, 0);
root.remove(key);
invalidateRowCount();
rowCount--;
} finally {
store.incrementChangeCount();
}
}
if (multiVersion) {
// if storage is null, the delete flag is not yet set
row.setDeleted(true);
if (delta == null) {
delta = New.hashSet();
}
boolean wasAdded = delta.remove(row);
if (!wasAdded) {
delta.add(row);
}
incrementRowCount(session.getId(), -1);
}
store.logAddOrRemoveRow(session, tableData.getId(), row, false);
}
private void addTry(Session session, Row row) {
while (true) {
PageData root = getPage(rootPageId, 0);
int splitPoint = root.addRowTry(row);
if (splitPoint == -1) {
break;
}
if (trace.isDebugEnabled()) {
trace.debug("{0} split", this);
}
long pivot = splitPoint == 0 ? row.getKey() : root.getKey(splitPoint - 1);
PageData page1 = root;
PageData page2 = root.split(splitPoint);
int id = store.allocatePage();
page1.setPageId(id);
page1.setParentPageId(rootPageId);
page2.setParentPageId(rootPageId);
PageDataNode newRoot = PageDataNode.create(this, rootPageId, PageData.ROOT);
newRoot.init(page1, pivot, page2);
store.update(page1);
store.update(page2);
store.update(newRoot);
root = newRoot;
}
row.setDeleted(false);
if (multiVersion) {
if (delta == null) {
delta = New.hashSet();
}
boolean wasDeleted = delta.remove(row);
if (!wasDeleted) {
delta.add(row);
}
incrementRowCount(session.getId(), 1);
}
invalidateRowCount();
rowCount++;
store.logAddOrRemoveRow(session, tableData.getId(), row, true);
}