本文整理汇总了C#中IPersistentCollection.GetSnapshotElement方法的典型用法代码示例。如果您正苦于以下问题：C# IPersistentCollection.GetSnapshotElement方法的具体用法？C# IPersistentCollection.GetSnapshotElement怎么用？C# IPersistentCollection.GetSnapshotElement使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类IPersistentCollection的用法示例。
在下文中一共展示了IPersistentCollection.GetSnapshotElement方法的3个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C#代码示例。
示例1: DoUpdateRows
protected override int DoUpdateRows(object id, IPersistentCollection collection, ISessionImplementor session)
{
if (ArrayHelper.IsAllFalse(elementColumnIsSettable)) return 0;
try
{
IDbCommand st = null;
IExpectation expectation = Expectations.AppropriateExpectation(UpdateCheckStyle);
//bool callable = UpdateCallable;
bool useBatch = expectation.CanBeBatched;
IEnumerable entries = collection.Entries(this);
int i = 0;
int count = 0;
foreach (object entry in entries)
{
if (collection.NeedsUpdating(entry, i, ElementType))
{
int offset = 0;
if (useBatch)
{
if (st == null)
{
st =
session.Batcher.PrepareBatchCommand(SqlUpdateRowString.CommandType, SqlUpdateRowString.Text,
SqlUpdateRowString.ParameterTypes);
}
}
else
{
st =
session.Batcher.PrepareCommand(SqlUpdateRowString.CommandType, SqlUpdateRowString.Text,
SqlUpdateRowString.ParameterTypes);
}
try
{
//offset += expectation.Prepare(st, Factory.ConnectionProvider.Driver);
int loc = WriteElement(st, collection.GetElement(entry), offset, session);
if (hasIdentifier)
{
WriteIdentifier(st, collection.GetIdentifier(entry, i), loc, session);
}
else
{
loc = WriteKey(st, id, loc, session);
if (HasIndex && !indexContainsFormula)
{
WriteIndexToWhere(st, collection.GetIndex(entry, i, this), loc, session);
}
else
{
WriteElementToWhere(st, collection.GetSnapshotElement(entry, i), loc, session);
}
}
if (useBatch)
{
session.Batcher.AddToBatch(expectation);
}
else
{
expectation.VerifyOutcomeNonBatched(session.Batcher.ExecuteNonQuery(st), st);
}
}
catch (Exception e)
{
if (useBatch)
{
session.Batcher.AbortBatch(e);
}
throw;
}
finally
{
if (!useBatch)
{
session.Batcher.CloseCommand(st, null);
}
}
count++;
}
i++;
}
return count;
}
catch (DbException sqle)
{
throw ADOExceptionHelper.Convert(SQLExceptionConverter, sqle,
"could not update collection rows: " + MessageHelper.InfoString(this, id),
SqlUpdateRowString.Text);
}
}示例2: DoUpdateRows
protected override int DoUpdateRows(object id, IPersistentCollection collection, ISessionImplementor session)
{
// we finish all the "removes" first to take care of possible unique
// constraints and so that we can take better advantage of batching
try
{
const int offset = 0;
int count = 0;
if (RowDeleteEnabled)
{
IExpectation deleteExpectation = Expectations.AppropriateExpectation(DeleteCheckStyle);
bool useBatch = deleteExpectation.CanBeBatched;
SqlCommandInfo sql = SqlDeleteRowString;
IDbCommand st = null;
// update removed rows fks to null
try
{
int i = 0;
IEnumerable entries = collection.Entries(this);
foreach (object entry in entries)
{
if (collection.NeedsUpdating(entry, i, ElementType))
{
// will still be issued when it used to be null
if (useBatch)
{
st = session.Batcher.PrepareBatchCommand(SqlDeleteRowString.CommandType, sql.Text,
SqlDeleteRowString.ParameterTypes);
}
else
{
st = session.Batcher.PrepareCommand(SqlDeleteRowString.CommandType, sql.Text,
SqlDeleteRowString.ParameterTypes);
}
int loc = WriteKey(st, id, offset, session);
WriteElementToWhere(st, collection.GetSnapshotElement(entry, i), loc, session);
if (useBatch)
{
session.Batcher.AddToBatch(deleteExpectation);
}
else
{
deleteExpectation.VerifyOutcomeNonBatched(session.Batcher.ExecuteNonQuery(st), st);
}
count++;
}
i++;
}
}
catch (Exception e)
{
if (useBatch)
{
session.Batcher.AbortBatch(e);
}
throw;
}
finally
{
if (!useBatch && st != null)
{
session.Batcher.CloseCommand(st, null);
}
}
}
if (RowInsertEnabled)
{
IExpectation insertExpectation = Expectations.AppropriateExpectation(InsertCheckStyle);
//bool callable = InsertCallable;
bool useBatch = insertExpectation.CanBeBatched;
SqlCommandInfo sql = SqlInsertRowString;
IDbCommand st = null;
// now update all changed or added rows fks
try
{
int i = 0;
IEnumerable entries = collection.Entries(this);
foreach (object entry in entries)
{
if (collection.NeedsUpdating(entry, i, ElementType))
{
if (useBatch)
{
st = session.Batcher.PrepareBatchCommand(SqlInsertRowString.CommandType, sql.Text,
SqlInsertRowString.ParameterTypes);
}
else
{
st = session.Batcher.PrepareCommand(SqlInsertRowString.CommandType, sql.Text,
SqlInsertRowString.ParameterTypes);
}
//offset += insertExpectation.Prepare(st, Factory.ConnectionProvider.Driver);
int loc = WriteKey(st, id, offset, session);
if (HasIndex && !indexContainsFormula)
//.........这里部分代码省略.........
示例3: DoUpdateRows
protected override int DoUpdateRows(object id, IPersistentCollection collection, ISessionImplementor session)
{
// we finish all the "removes" first to take care of possible unique
// constraints and so that we can take better advantage of batching
IDbCommand st = null;
IEnumerable entries;
int i;
try
{
// update removed rows fks to null
IExpectation expectation = Expectations.AppropriateExpectation(DeleteCheckStyle);
bool useBatch = expectation.CanBeBatched;
int count = 0;
try
{
i = 0;
entries = collection.Entries();
int offset = 0;
foreach (object entry in entries)
{
if (collection.NeedsUpdating(entry, i, ElementType)) // will still be issued when it used to be null
{
if (useBatch)
{
if (st == null)
{
st =
session.Batcher.PrepareBatchCommand(SqlDeleteRowString.CommandType, SqlDeleteRowString.Text,
SqlDeleteRowString.ParameterTypes);
}
}
else
{
st = session.Batcher.PrepareCommand(
SqlDeleteRowString.CommandType,
SqlDeleteRowString.Text,
SqlDeleteRowString.ParameterTypes);
}
//offset += expectation.Prepare(st, Factory.ConnectionProvider.Driver);
int loc = WriteKey(st, id, offset, session);
WriteElementToWhere(st, collection.GetSnapshotElement(entry, i), loc, session);
if (useBatch)
{
session.Batcher.AddToBatch(expectation);
}
else
{
expectation.VerifyOutcomeNonBatched(session.Batcher.ExecuteNonQuery(st), st);
}
count++;
}
i++;
}
}
catch (Exception e)
{
if (useBatch)
{
session.Batcher.AbortBatch(e);
}
throw;
}
finally
{
if (!useBatch && st != null)
{
session.Batcher.CloseCommand(st, null);
}
}
// now update all changed or added rows fks
count = 0;
st = null;
try
{
expectation = Expectations.AppropriateExpectation(DeleteCheckStyle);
useBatch = expectation.CanBeBatched;
i = 0;
entries = collection.Entries();
foreach (object entry in entries)
{
int offset = 0;
if (collection.NeedsUpdating(entry, i, ElementType)) // will still be issued when it used to be null
{
if (useBatch)
{
if (st == null)
{
st =
session.Batcher.PrepareBatchCommand(SqlInsertRowString.CommandType, SqlInsertRowString.Text,
SqlInsertRowString.ParameterTypes);
}
}
else
{
st = session.Batcher.PrepareCommand(
SqlInsertRowString.CommandType,
SqlInsertRowString.Text,
//.........这里部分代码省略.........