IWMSCacheProxyPlugin Interface

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IWMSCacheProxyPlugin Interface

The IWMSCacheProxyPlugin interface enables you to prestuff a cache and retrieve specific cache items.

In addition to the methods inherited from IWMSPlugin, the IWMSCacheProxyPlugin interface exposes the following methods.

Method Description
get_CacheItems Retrieves an IWMSCacheItems interface containing a collection of IWMSCacheItem interfaces.
PreStuff Fills a cache with content.

Example Code

The following example illustrates how to retrieve a pointer to an IWMSCacheProxyPlugin interface.

#include <windows.h>
#include <atlbase.h>    // Includes CComVariant.
#include "wmsserver.h"

// Declare variables and interfaces.
IWMSServer                  *pServer;
IWMSPlugins                 *pPlugins;
IWMSPlugin                  *pPlugin;
IWMSCacheProxyPlugin        *pCacheProxyPlugin;

HRESULT         hr;
CComVariant     varIndex;
long            lCount;

// Initialize the COM library and retrieve a pointer
// to an IWMSServer interface.
hr = CoInitialize(NULL);
hr = CoCreateInstance(CLSID_WMSServer,
                      NULL,
                      CLSCTX_ALL,
                      IID_IWMSServer,
                      (void **)&pServer);
if (FAILED(hr)) goto EXIT;

// Retrieve a pointer to an IWMSPlugins interface
// that contains cache proxy plug-ins.
hr = pServer->get_CacheProxy(&pPlugins);
if (FAILED(hr)) goto EXIT;
hr = pPlugins->get_Count(&lCount);
if (FAILED(hr)) goto EXIT;

// Retrieve the IWMSPlugin interface for the
// first cache proxy plug-in.
varIndex = 0;
hr = pPlugins->get_Item(varIndex, &pPlugin);
if (FAILED(hr)) goto EXIT;

// Retrieve a pointer to the IWMSCacheProxyPlugin interface.
hr = pPlugin->QueryInterface(IID_IWMSCacheProxyPlugin,
                            (void **)&pCacheProxyPlugin);
if (FAILED(hr)) goto EXIT;

EXIT:
    // TODO: Release temporary COM objects and uninitialize COM.

See Also

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