private QueryTask CreateFetchVersionTask(Key key)
{
var type = key.TypeInfo;
var provider = type.Indexes.PrimaryIndex.GetQuery().Seek(key.Value);
var execProvider = Session.Compile(provider);
return(new QueryTask(execProvider, Session.GetLifetimeToken(), null));
}
/// <inheritdoc/>
public void Lock(LockMode lockMode, LockBehavior lockBehavior)
{
using (new ParameterContext().Activate()) {
keyParameter.Value = Key.Value;
object key = new Triplet <TypeInfo, LockMode, LockBehavior>(TypeInfo, lockMode, lockBehavior);
Func <object, object> generator = tripletObj => {
var triplet = (Triplet <TypeInfo, LockMode, LockBehavior>)tripletObj;
IndexInfo index = triplet.First.Indexes.PrimaryIndex;
var query = index.GetQuery()
.Seek(() => keyParameter.Value)
.Lock(() => triplet.Second, () => triplet.Third)
.Select();
return(Session.Compile(query));
};
var source = (ExecutableProvider)Session.StorageNode.InternalQueryCache.GetOrAdd(key, generator);
var recordSet = source.GetRecordSet(Session);
recordSet.FirstOrDefault();
}
}
/// <inheritdoc/>
public void Lock(LockMode lockMode, LockBehavior lockBehavior)
{
var parameterContext = new ParameterContext();
parameterContext.SetValue(keyParameter, Key.Value);
object key = new Triplet <TypeInfo, LockMode, LockBehavior>(TypeInfo, lockMode, lockBehavior);
Func <object, object> generator = tripletObj => {
var triplet = (Triplet <TypeInfo, LockMode, LockBehavior>)tripletObj;
var index = triplet.First.Indexes.PrimaryIndex;
var query = index.GetQuery()
.Seek(context => context.GetValue(keyParameter))
.Lock(() => triplet.Second, () => triplet.Third)
.Select();
return(Session.Compile(query));
};
var source = (ExecutableProvider)Session.StorageNode.InternalQueryCache.GetOrAdd(key, generator);
using var recordSetReader = source.GetRecordSetReader(Session, parameterContext);
recordSetReader.MoveNext();
}