public int update() {
if (!transactional) {
session.commit(true);
}
Database db = session.getDatabase();
if (!db.isPersistent()) {
data.persistIndexes = false;
}
if (getSchema().findTableOrView(session, data.tableName) != null) {
if (ifNotExists) {
return 0;
}
throw DbException.get(ErrorCode.TABLE_OR_VIEW_ALREADY_EXISTS_1, data.tableName);
}
if (asQuery != null) {
asQuery.prepare();
if (data.columns.size() == 0) {
generateColumnsFromQuery();
} else if (data.columns.size() != asQuery.getColumnCount()) {
throw DbException.get(ErrorCode.COLUMN_COUNT_DOES_NOT_MATCH);
}
}
if (pkColumns != null) {
for (Column c : data.columns) {
for (IndexColumn idxCol : pkColumns) {
if (c.getName().equals(idxCol.columnName)) {
c.setNullable(false);
}
}
}
}
data.id = getObjectId();
data.create = create;
data.session = session;
boolean isSessionTemporary = data.temporary && !data.globalTemporary;
if (!isSessionTemporary) {
db.lockMeta(session);
}
Table table = createTable(data);
ArrayList<Sequence> sequences = New.arrayList();
for (Column c : data.columns) {
if (c.isAutoIncrement()) {
int objId = getObjectId();
c.convertAutoIncrementToSequence(session, getSchema(), objId, data.temporary);
}
Sequence seq = c.getSequence();
if (seq != null) {
sequences.add(seq);
}
}
table.setComment(comment);
if (isSessionTemporary) {
if (onCommitDrop) {
table.setOnCommitDrop(true);
}
if (onCommitTruncate) {
table.setOnCommitTruncate(true);
}
session.addLocalTempTable(table);
} else {
db.lockMeta(session);
db.addSchemaObject(session, table);
}
try {
for (Column c : data.columns) {
c.prepareExpression(session);
}
for (Sequence sequence : sequences) {
table.addSequence(sequence);
}
for (DefineCommand command : constraintCommands) {
command.setTransactional(transactional);
command.update();
}
if (asQuery != null) {
boolean old = session.isUndoLogEnabled();
try {
session.setUndoLogEnabled(false);
Insert insert = null;
insert = session.createInsert();
insert.setSortedInsertMode(sortedInsertMode);
insert.setQuery(asQuery);
insert.setTable(table);
insert.setInsertFromSelect(true);
insert.prepare();
insert.update();
} finally {
session.setUndoLogEnabled(old);
}
}
} catch (DbException e) {
db.checkPowerOff();
db.removeSchemaObject(session, table);
if (!transactional) {
session.commit(true);
}
throw e;
}