WildcardFilter, classe (Microsoft.Office.Server.ApplicationRegistry.Runtime)

Article
02/01/2010

Represents a filter that limits the instances returned to those where field like value, where value may contain the asterisk (*) wildcard character.

Espace de noms : Microsoft.Office.Server.ApplicationRegistry.Runtime
Assembly : Microsoft.SharePoint.Portal (dans microsoft.sharepoint.portal.dll)

Syntaxe

'Déclaration
<SerializableAttribute> _
<SharePointPermissionAttribute(SecurityAction.InheritanceDemand, ObjectModel:=True)> _
<SharePointPermissionAttribute(SecurityAction.LinkDemand, ObjectModel:=True)> _
Public Class WildcardFilter
    Inherits ComparisonFilter
'Utilisation
Dim instance As WildcardFilter

[SerializableAttribute] 
[SharePointPermissionAttribute(SecurityAction.InheritanceDemand, ObjectModel=true)] 
[SharePointPermissionAttribute(SecurityAction.LinkDemand, ObjectModel=true)] 
public class WildcardFilter : ComparisonFilter

Remarques

Users can use this filter type to present more user-friendly filters such as "starts with" and "contains". It also insulates the user from having to know what wildcard character the particular backend uses, and how to escape the wildcard itself for a particular backend. For example, SAP uses '*' as the wildcard, and to escape it, the sequence [*]. SQL uses '%' as the wildcard. It does this by providing a single '*' wildcard char and a single \* escape sequence that one would use to actually pass a literal * as input. Metadata authors set the WildcardCharacterEscapeFormat and WildcardCharacter properties on the LobSystem to map these to system specific wildcard requirements.

Exemple

This example shows how to execute a WildcardFinder method on the Product entity in the AdventureWorksSample2000 sample. The example limits the Entity instances returned to those in the AdventureWorks 2000 sample that contain the word bike in the product name.

Prerequisites

Ensure a Shared Service Provider is already created.
Replace the constant value EnterYourSSPNameHere in the code with the name of your Shared Resource Provider.
Ensure the LobSystem object and entity names that are referenced in the example exist in the Business Data Catalog. Use valid names.

Project References

Add the following Project References in your console application code project before running this sample:

Microsoft.SharePoint
Microsoft.SharePoint.Portal
Microsoft.Office.Server

using System;
using System.Collections.Generic;
using System.Text;
using System.Data;
using Microsoft.Office.Server.ApplicationRegistry.MetadataModel;
using Microsoft.Office.Server.ApplicationRegistry.Runtime;
using Microsoft.Office.Server.ApplicationRegistry.SystemSpecific;
using Microsoft.Office.Server.ApplicationRegistry.Infrastructure;
using WSSAdmin = Microsoft.SharePoint.Administration;
using OSSAdmin = Microsoft.Office.Server.Administration;

namespace Microsoft.SDK.SharePointServer.Samples
{
    class ExecuteWildcardFilter
    {
        const string yourSSPName ="EnterYourSSPNameHere";

        static void Main(string[] args)
        {
            SetupBDC();
            FindFiltered();
            Console.WriteLine("Press any key to exit...");
            Console.Read();
        }
        static void SetupBDC()
        {
            SqlSessionProvider.Instance().SetSharedResourceProviderToUse(yourSSPName);
        }
        static void FindFiltered()
        {
            NamedLobSystemInstanceDictionary sysInstances = ApplicationRegistry.GetLobSystemInstances();
            LobSystemInstance AdvWorksIns = sysInstances["AdventureWorksSampleInstance"];
            Entity prodEntity = AdvWorksIns.GetEntities()["Product"];
            FilterCollection fc = prodEntity.GetFinderFilters();
            FilterCollection newfc = new FilterCollection();
            for (int i = 0; i < fc.Count; i++)
            {
                if (fc[i].GetType().FullName == "Microsoft.Office.Server.ApplicationRegistry.Runtime.WildcardFilter")
                {
                    if (string.IsNullOrEmpty("Name") || (0 == string.Compare(fc[i].Name, "Name")))
                    {
                        newfc.Add(fc[i]);
                    }
                }
            }
            ((WildcardFilter)newfc[0]).Value = "*bike*";
            IEntityInstanceEnumerator prodEntityInstanceEnumerator = prodEntity.FindFiltered(newfc, AdvWorksIns);
            while (prodEntityInstanceEnumerator.MoveNext())
            {
                IEntityInstance IE = prodEntityInstanceEnumerator.Current;
                foreach (Field f in prodEntity.GetFinderView().Fields)
                    Console.Write(IE[f]);
                Console.WriteLine("");
            }
        }
    }
}

Hiérarchie d'héritage

System.Object
   Microsoft.Office.Server.ApplicationRegistry.Runtime.FilterBase
     Microsoft.Office.Server.ApplicationRegistry.Runtime.UserInputFilter
       Microsoft.Office.Server.ApplicationRegistry.Runtime.ComparisonFilter
        Microsoft.Office.Server.ApplicationRegistry.Runtime.WildcardFilter

Sécurité des threads

Les membres statiques publics de ce type (Shared en Visual Basic) sont sécurisés au niveau des threads. Il n'est pas garanti que les membres d'instance soient sécurisés au niveau des threads.

Voir aussi

Référence

Membres WildcardFilter
Microsoft.Office.Server.ApplicationRegistry.Runtime, espace de noms

Partager via