public PageDataIndex(
RegularTable table,
int id,
IndexColumn[] columns,
IndexType indexType,
boolean create,
Session session) {
initBaseIndex(table, id, table.getName() + "_DATA", columns, indexType);
RegularDatabase database = (RegularDatabase) this.database;
this.multiVersion = database.isMultiVersion();
// trace = database.getTrace(Trace.PAGE_STORE + "_di");
// trace.setLevel(TraceSystem.DEBUG);
if (multiVersion) {
sessionRowCount = New.hashMap();
isMultiVersion = true;
} else {
sessionRowCount = null;
}
tableData = table;
this.store = database.getPageStore();
store.addIndex(this);
if (!database.isPersistent()) {
throw DbException.throwInternalError(table.getName());
}
if (create) {
rootPageId = store.allocatePage();
store.addMeta(this, session);
PageDataLeaf root = PageDataLeaf.create(this, rootPageId, PageData.ROOT);
store.update(root);
} else {
rootPageId = store.getRootPageId(id);
PageData root = getPage(rootPageId, 0);
lastKey = root.getLastKey();
rowCount = root.getRowCount();
}
if (trace.isDebugEnabled()) {
trace.debug("{0} opened rows: {1}", this, rowCount);
}
table.setRowCount(rowCount);
memoryPerPage = (Constants.MEMORY_PAGE_DATA + store.getPageSize()) >> 2;
}
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);
}