/** Fully roll back the current transaction. */
public void rollback() {
checkCommitRollback();
currentTransactionName = null;
boolean needCommit = false;
if (locks.size() > 0 || needCommit) {
database.commit(this);
}
cleanTempTables(false);
if (autoCommitAtTransactionEnd) {
autoCommit = true;
autoCommitAtTransactionEnd = false;
}
endTransaction();
List<SQLException> rollbackExceptions = New.arrayList();
for (Map.Entry<String, Connection> entry : connectionHolder.entrySet()) {
try {
entry.getValue().rollback();
} catch (SQLException ex) {
rollbackExceptions.add(ex);
}
}
if (!rollbackExceptions.isEmpty()) {
throw DbException.convert(rollbackExceptions.get(0));
}
}
/**
* Commit the current transaction. If the statement was not a data definition statement, and if
* there are temporary tables that should be dropped or truncated at commit, this is done as well.
*
* @param ddl if the statement was a data definition statement
*/
public void commit(boolean ddl) {
checkCommitRollback();
currentTransactionName = null;
transactionStart = 0;
if (containsUncommitted()) {
// need to commit even if rollback is not possible
// (create/drop table and so on)
database.commit(this);
}
if (temporaryLobs != null) {
for (Value v : temporaryLobs) {
if (!v.isLinked()) {
v.close();
}
}
temporaryLobs.clear();
}
if (!ddl) {
// do not clean the temp tables if the last command was a
// create/drop
cleanTempTables(false);
if (autoCommitAtTransactionEnd) {
autoCommit = true;
autoCommitAtTransactionEnd = false;
}
}
endTransaction();
boolean commit = true;
List<SQLException> commitExceptions = New.arrayList();
StringBuilder buf = new StringBuilder();
for (Map.Entry<String, Connection> entry : connectionHolder.entrySet()) {
if (commit) {
try {
entry.getValue().commit();
buf.append("\ncommit shard " + entry.getKey() + " transaction succeed.");
} catch (SQLException ex) {
commit = false;
commitExceptions.add(ex);
buf.append("\ncommit shard " + entry.getKey() + " transaction failure.");
}
} else {
// after unsucessfull commit we must try to rollback
// remaining connections
try {
entry.getValue().rollback();
buf.append("\nrollback shard " + entry.getKey() + " transaction succeed.");
} catch (SQLException ex) {
buf.append("\nrollback shard " + entry.getKey() + " transaction failure.");
}
}
}
if (commitExceptions.isEmpty()) {
trace.debug("commit multiple group transaction succeed. commit track list:{0}", buf);
} else {
trace.error(
commitExceptions.get(0),
"fail to commit multiple group transaction. commit track list:{0}",
buf);
DbException.convert(commitExceptions.get(0));
}
}