@Override
public Object uniqueResult() throws HibernateException {
// build a shard operation and apply it across all shards
final ShardOperation<Object> shardOp =
new ShardOperation<Object>() {
@Override
public Object execute(Shard shard) {
shard.establishCriteria(ShardedCriteriaImpl.this);
return shard.uniqueResult(criteriaId);
}
@Override
public String getOperationName() {
return "uniqueResult()";
}
};
/**
* We don't support shard selection for criteria queries. If you want custom shards, create a
* ShardedSession with only the shards you want. We're going to return the first non-null result
* we get from a shard.
*/
return shardAccessStrategy.apply(
shards, shardOp, new FirstNonNullResultExitStrategy<Object>(), criteriaCollector);
}
@Override
public List list() throws HibernateException {
// build a shard operation and apply it across all shards
final ShardOperation<List<Object>> shardOp =
new ShardOperation<List<Object>>() {
@Override
public List<Object> execute(final Shard shard) {
shard.establishCriteria(ShardedCriteriaImpl.this);
return shard.list(criteriaId);
}
@Override
public String getOperationName() {
return "list()";
}
};
/**
* We don't support shard selection for criteria queries. If you want custom shards, create a
* ShardedSession with only the shards you want. We're going to concatenate all our results and
* then use our criteria collector to do post processing.
*/
return shardAccessStrategy.apply(
shards, shardOp, new ConcatenateListsExitStrategy(), criteriaCollector);
}
