Méthode Database.PrefetchObjects (Type)

Article
04/26/2013

Prefetches database objects of a specified type.

Espace de noms : Microsoft.SqlServer.Management.Smo
Assembly : Microsoft.SqlServer.Smo (en Microsoft.SqlServer.Smo.dll)

Syntaxe

'Déclaration
Public Sub PrefetchObjects ( _
    objectType As Type _
)
'Utilisation
Dim instance As Database 
Dim objectType As Type

instance.PrefetchObjects(objectType)

public void PrefetchObjects(
    Type objectType
)

public:
void PrefetchObjects(
    Type^ objectType
)

member PrefetchObjects : 
        objectType:Type -> unit

public function PrefetchObjects(
    objectType : Type
)

Paramètres

objectType
Type : System.Type
A Type object that limits the type of object that is to be prefetched.

Notes

This enables collections to be fully populated with objects by making one network trip to the instance of SQL Server. Prefetching is an optimization used when the whole collection of objects is required.

This method uses the default initialization of fields for prefetching database objects.

Exemples

'Connect to the local, default instance of SQL Server.
Dim srv As Server
srv = New Server

'Reference the AdventureWorks2012 database.
Dim db As Database
db = srv.Databases("AdventureWorks2012")

'Assign the Table object type to a System.Type object variable.
Dim tb As Table
Dim typ As Type
tb = New Table
typ = tb.GetType

'Set scripting options.
Dim so As ScriptingOptions
so = New ScriptingOptions
so.AllowSystemObjects = True

'Prefetch all Table type objects, including system objects.
db.PrefetchObjects(typ, so)

PowerShell

$srv = new-Object Microsoft.SqlServer.Management.Smo.Server("(local)")
$db = New-Object Microsoft.SqlServer.Management.Smo.Database
$db = $srv.Databases.Item("AdventureWorks2012")

$tb = New-Object Microsoft.SqlServer.Management.Smo.Table
$typ = $tb.GetType()

$so = New-Object Microsoft.SqlServer.Management.Smo.ScriptingOptions
$so.AllowSystemObjects = $TRUE

$db.PrefetchObjects($typ, $so)

Write-Host $db.GetTransactionCount()