Snapshot how many levels

A snapshot transaction always uses optimistic concurrency control, withholding any locks that would prevent other transactions from updating rows. If a snapshot transaction attempts to commit an update to a row that was changed after the transaction began, the transaction is rolled back, and an error is raised. Snapshot isolation is supported in ADO. NET by the SqlTransaction class.

Snapshot enumeration value when calling the BeginTransaction method. This code fragment assumes that connection is an open SqlConnection object. The following example demonstrates how the different isolation levels behave by attempting to access locked data, and it is not intended to be used in production code. The code then performs the following actions:. This has the effect of locking the table.

Because snapshot isolation is enabled, this transaction can read the data that existed before sqlTransaction1 started. In this case, the code cannot read the data because it cannot read past the locks placed on the table in the first transaction and times out.

This value may never actually exist in the database if the first transaction is not committed. It rolls back the first transaction and cleans up by deleting the TestSnapshot table and turning off snapshot isolation for the AdventureWorks database.

The following examples use the same connection string with connection pooling turned off. If a connection is pooled, resetting its isolation level does not reset the isolation level at the server. As a result, subsequent connections that use the same pooled inner connection start with their isolation levels set to that of the pooled connection. An alternative to turning off connection pooling is to set the isolation level explicitly for each connection.

The following example demonstrates the behavior of snapshot isolation when data is being modified. The code performs the following actions:. Three rows of data are selected in the transaction. Returns to sqlTransaction1 and attempts to update the same row that sqlTransaction1 already committed. Error is raised, and sqlTransaction1 is rolled back automatically. The SqlException. Sign In or Open in Steam. Languages :. View Steam Achievements Includes 36 Steam Achievements.

Publisher: Retro Affect. Share Embed. Read Critic Reviews. Add to Cart. Add all DLC to Cart. View Community Hub. About This Game Snapshot is the tale of a lone robot lost in an abandoned world.

A camera might not seem like enough for a puzzle platforming adventure, but this camera is different from most: It has the ability to capture and remove from the world the very objects that it photographs. Not only that, but it can also use its powers to paste the photos it took back into the environment! Everything that the camera captures is perfectly preserved, and when the photos are restored the objects are restored with it.

On top of all of that, this amazing camera can also rotate the photos before they're pasted. Take a picture of an incoming fireball, rotate it and paste it to send it flying into a wall of heavy boxes to knock it out of the way. See what kind of crazy things can happen to Pic with his awesome and probably magical camera during the adventure of his life! Key Features: A unique photography mechanic Over different levels of platforming and puzzling. Secrets and time trial challenges for every level.

Hand crafted high resolution graphics. System Requirements Windows. All rights reserved. See all. Customer reviews. Conversely, clicking the red bar turns it green, returning the filter to its original function. Refer to Negating Level Snapshot Filters for more information. You can also negate the filter, undo negation, and enable or disable a filter from the filter properties.

See the Level Snapshot Filter Reference for more details. If you have created a custom filter using Blueprints , you can select it from the Blueprint Filters submenu.

You can also use the Search text box to find a particular filter to add. The most commonly-used filters are included in the menu under the heading Common Filters. Once you have added a filter, select it to modify its properties.

Most filters will have at least one property that you need to set before it is functional. Refer to the Level Snapshot Filter Reference for more details. Select a saved Level Snapshot, then click Refresh Results. The Actors saved in the Level Snapshot will now be filtered according to the filter you configured. A new window opens, where you can name your filter and select the directory to save it in as an Asset.

If you have a large number of saved filters, you can use the Search bar to find a specific filter. Level Snapshot filters have advanced features that allow for complex combinations of filters to achieve specific results. This can be helpful when you are dealing with large Levels with many Actors and multiple saved Level Snapshots. This means that both filters will be applied to the Level Snapshots and only those Actors that meet all the filter criteria will be shown. This means that Actors that fit the criteria of either Filter Group will be shown.

You can ignore a Filter Group by clicking the checkbox to disable it, or include an ignored Filter Group by clicking the checkbox to enable it. Do Not Care , which includes or excludes Actors directly affected by the filter according to the negation setting, but does not care about the state of any other Actor.

Negating a filter set to Exclude in the Default Result property will actually include the filter's results. Be careful to use well-defined logic as much as possible, so as not to confuse the function of your filter. Because of the potential for complex interactions between filters, we highly recommend that you carefully name your filters to identify their functionality, especially if other users will be using the filters you create.

In most cases, we do not recommend using both Is Actor Valid and Is Property Valid filters at the same time, as the results will often not be useful. This would enable applying some of the settings of one Level Snapshot with a filter, and while also applying different settings from another Level Snapshot with another filter.

For example, consider a Virtual Production setup with two light options, and two set dressing options. Someone could ask for option 1 on lights, and option 2 on set dressing. With Level Snapshot Filter Blueprints you can create an interface to take and apply the appropriate settings from the different Level Snapshots. The full logic required for this setup can't be configured using only the Apply Snapshot to World button, so in this case you would need to construct a complicated filter.

When working with Level Snapshot filters, negating filters is a useful way to make a filter serve multiple purposes. In general, negating a filter has the following effects:.

If you negate the filter in the UI, the behaviour is reversed: Actors with the "RestoreMe" tag will now be excluded and all other Actors will be included. Be careful using negations with these filters to ensure you achieve the intended results when applying your filters to your Level Snapshots.