/** Return the query results as an iterator */
public Iterator iterate(QueryParameters queryParameters, EventSource session)
throws HibernateException {
boolean stats = session.getFactory().getStatistics().isStatisticsEnabled();
long startTime = 0;
if (stats) startTime = System.currentTimeMillis();
try {
PreparedStatement st = prepareQueryStatement(queryParameters, false, session);
ResultSet rs =
getResultSet(
st,
queryParameters.hasAutoDiscoverScalarTypes(),
false,
queryParameters.getRowSelection(),
session);
HolderInstantiator hi =
HolderInstantiator.createClassicHolderInstantiator(
holderConstructor, queryParameters.getResultTransformer());
Iterator result = new IteratorImpl(rs, st, session, returnTypes, getColumnNames(), hi);
if (stats) {
session
.getFactory()
.getStatisticsImplementor()
.queryExecuted("HQL: " + queryString, 0, System.currentTimeMillis() - startTime);
}
return result;
} catch (SQLException sqle) {
throw JDBCExceptionHelper.convert(
getFactory().getSQLExceptionConverter(),
sqle,
"could not execute query using iterate",
getSQLString());
}
}
/** @see LockingStrategy#lock */
public void lock(Serializable id, Object version, Object object, SessionImplementor session)
throws StaleObjectStateException, JDBCException {
SessionFactoryImplementor factory = session.getFactory();
try {
PreparedStatement st = session.getBatcher().prepareSelectStatement(sql);
try {
lockable.getIdentifierType().nullSafeSet(st, id, 1, session);
if (lockable.isVersioned()) {
lockable
.getVersionType()
.nullSafeSet(
st, version, lockable.getIdentifierType().getColumnSpan(factory) + 1, session);
}
ResultSet rs = st.executeQuery();
try {
if (!rs.next()) {
if (factory.getStatistics().isStatisticsEnabled()) {
factory.getStatisticsImplementor().optimisticFailure(lockable.getEntityName());
}
throw new StaleObjectStateException(lockable.getEntityName(), id);
}
} finally {
rs.close();
}
} finally {
session.getBatcher().closeStatement(st);
}
} catch (SQLException sqle) {
throw JDBCExceptionHelper.convert(
session.getFactory().getSQLExceptionConverter(),
sqle,
"could not lock: " + MessageHelper.infoString(lockable, id, session.getFactory()),
sql);
}
}
protected int doUpdateRows(
Serializable id, PersistentCollection collection, SessionImplementor session)
throws HibernateException {
if (ArrayHelper.isAllFalse(elementColumnIsSettable)) return 0;
try {
PreparedStatement st = null;
boolean callable = isUpdateCallable();
Iterator entries = collection.entries(this);
try {
int i = 0;
int count = 0;
while (entries.hasNext()) {
int offset = 1;
Object entry = entries.next();
if (collection.needsUpdating(entry, i, elementType)) {
if (st == null) {
if (callable) {
CallableStatement callstatement =
session.getBatcher().prepareBatchCallableStatement(getSQLUpdateRowString());
callstatement.registerOutParameter(
offset++,
Types
.NUMERIC); // TODO: should we require users to return number of update rows
// ? (we cant make it return this without changing
// collectionpersister interface)
st = callstatement;
} else {
st = session.getBatcher().prepareBatchStatement(getSQLUpdateRowString());
}
}
int loc = writeElement(st, collection.getElement(entry), offset, session);
if (hasIdentifier) {
loc = writeIdentifier(st, collection.getIdentifier(entry, i), loc, session);
} else {
loc = writeKey(st, id, loc, session);
if (hasIndex && !indexContainsFormula) {
loc = writeIndexToWhere(st, collection.getIndex(entry, i, this), loc, session);
} else {
loc =
writeElementToWhere(st, collection.getSnapshotElement(entry, i), loc, session);
}
}
session.getBatcher().addToBatch(1);
count++;
}
i++;
}
return count;
} catch (SQLException sqle) {
session.getBatcher().abortBatch(sqle);
throw sqle;
}
} catch (SQLException sqle) {
throw JDBCExceptionHelper.convert(
getSQLExceptionConverter(),
sqle,
"could not update collection rows: "
+ MessageHelper.collectionInfoString(this, id, getFactory()),
getSQLUpdateRowString());
}
}
