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FPCWebFilters Collection

Internet Security and Acceleration Server 2004/2006 SDK

The FPCWebFilters collection holds an ordered set of FPCWebFilter objects.

In ISA Server Standard Edition, adding a new FPCWebFilter object to the FPCWebFilters collection registers the Web filter represented by the new object as an extension of the ISA Server Web proxy. The dynamic-link libraries (DLLs) of all registered Web filters are loaded when the Web proxy is launched and stay in memory until it shuts down.

In ISA Server Enterprise Edition, Web filters can be added to the FPCWebFilters collections in the enterprise configuration and in array configurations. However, for a Web filter to work on an ISA Server computer, its dynamic-link library (DLL) must be copied to the computer, an object representing it must be created in the FPCWebFilters collection for the computer's array, and it must be registered as an extension of the ISA Server Web proxy on the computer by including a reference to it in the computer's InstalledWebFilters property. Web filters are not ordered in the FPCWebFilters collection in the enterprise configuration. If the same Web filter is included in the FPCWebFilters collections in the enterprise configuration and an array configuration with different values for FilterDirection property, the enterprise setting overrides the array setting. Conversely, the values of the RelativePath and Priority properties in the enterprise configuration are ignored.

This collection is accessed through the WebFilters property of the FPCExtensions object.

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Inheritance

This collection inherits from the FPCPersist object, which contains methods and properties related to the persistent storage of an object's data. They include methods for exporting the object's data to and importing it from an XML document.

Methods

The FPCWebFilters collection defines the following methods.

Method	Description
Add	Creates a new FPCWebFilter object in the collection and returns a reference to it.
Item	Retrieves the requested FPCWebFilter object from the collection.
MoveDown	Moves the given filter one step down the list of Web filters.
MoveUp	Moves the given filter one step up the list of Web filters.
Remove	Removes a specified Web filter object from the collection.

Properties

The FPCWebFilters collection has the following properties.

Property	Description
_NewEnum	Gets an enumerator object for the collection.
Count	Gets the number of Web filters in the collection.

Methods Inherited from FPCPersist

Name	Description
CancelWaitForChanges	Cancels the registration established by the WaitForChanges method (for use in C and C++ programming only).
CanImport	Returns a Boolean value that indicates whether the properties of the collection and its elements can be imported from the specified XML document.
Export	Writes the stored values of all the properties of the collection and its elements to the specified XML document.
ExportToFile	Writes the stored values of all the properties of the collection and its elements to the specified XML file.
GetServiceRestartMask	Retrieves a 32-bit bitmask of the FpcServices enumerated type that specifies which services need to be restarted for currently unsaved changes to take effect.
Import	Copies the values of all the properties of the collection and its elements from the specified XML document to persistent storage.
ImportFromFile	Copies the values of all the properties of the collection and its elements from the specified XML file to persistent storage.
LoadDocProperties	Provides the XML document's properties so that you can know what information can be imported from the document.
Refresh	Reads the values of all the properties of the collection and its elements from persistent storage, overwriting any changes that have not been saved.
Save	Writes the current values of all the properties of the collection and its elements to persistent storage.
WaitForChanges	Registers to wait for an event indicating that the contents of the object have changed (for use in C and C++ programming only).

Properties Inherited from FPCPersist

Name	Description
PersistentName	Gets the persistent name of the collection. The persistent name of an object is a name that is unique for the object at the respective level of the COM object hierarchy.
VendorParametersSets	Gets an FPCVendorParametersSets collection that can hold sets of custom data for extending the collection.

Interfaces for C++ Programming

This collection implements the IFPCWebFilters interface.

Requirements

Client	Requires Windows XP.
Server	Requires Windows Server 2003. Requires Windows Server 2003 or Windows 2000 for ISA Server 2004 Standard Edition.
Version	Requires Internet Security and Acceleration (ISA) Server 2006 or ISA Server 2004.
IDL	Declared in Msfpccom.idl.