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gecko-dev/rdf/tests/rdfpoll/rdfpoll.cpp

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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*-
*
* The contents of this file are subject to the Netscape Public
* License Version 1.1 (the "License"); you may not use this file
* except in compliance with the License. You may obtain a copy of
* the License at http://www.mozilla.org/NPL/
*
* Software distributed under the License is distributed on an "AS
* IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
* implied. See the License for the specific language governing
* rights and limitations under the License.
*
* The Original Code is mozilla.org code.
*
* The Initial Developer of the Original Code is Netscape
* Communications Corporation. Portions created by Netscape are
* Copyright (C) 1998 Netscape Communications Corporation. All
* Rights Reserved.
*
* Contributor(s):
* Pierre Phaneuf <pp@ludusdesign.com>
*/
/*
A simple test program that reads in RDF/XML into an in-memory data
source, then periodically updates it. It prints the messages
indicating assert and unassert activity to the console.
The program takes two parameters: the URL from which to read, and
the poll-interval at which to re-load the .
*/
#include <stdlib.h>
#include "nsCOMPtr.h"
#include "nsIEventQueueService.h"
#include "nsIInputStream.h"
#include "nsIIOService.h"
#include "nsIGenericFactory.h"
#include "nsIRDFCompositeDataSource.h"
#include "nsIRDFRemoteDataSource.h"
#include "nsIRDFNode.h"
#include "nsIRDFService.h"
#include "nsIRDFXMLSource.h"
#include "nsIServiceManager.h"
#include "nsIStreamListener.h"
#include "nsIURL.h"
#include "nsDOMCID.h" // for NS_SCRIPT_NAMESET_REGISTRY_CID
#include "nsLayoutCID.h" // for NS_NAMESPACEMANAGER_CID
#include "nsRDFCID.h"
#include "nsRDFCID.h"
#include "nsIComponentManager.h"
#include "nsXPIDLString.h"
#include "prthread.h"
#include "plevent.h"
#include "plstr.h"
#include "nsParserCIID.h"
#include "nsString.h"
#if defined(XP_PC)
#define DOM_DLL "jsdom.dll"
#define LAYOUT_DLL "gkhtml.dll"
#define NETLIB_DLL "netlib.dll"
#define PARSER_DLL "gkparser.dll"
#define RDF_DLL "rdf.dll"
#define XPCOM_DLL "xpcom32.dll"
#elif defined(XP_UNIX) || defined(XP_BEOS)
#define DOM_DLL "libjsdom"MOZ_DLL_SUFFIX
#define LAYOUT_DLL "libgklayout"MOZ_DLL_SUFFIX
#define NETLIB_DLL "libnecko"MOZ_DLL_SUFFIX
#define PARSER_DLL "libhtmlpars"MOZ_DLL_SUFFIX
#define RDF_DLL "librdf"MOZ_DLL_SUFFIX
#define XPCOM_DLL "libxpcom"MOZ_DLL_SUFFIX
#elif defined(XP_MAC)
#define DOM_DLL "DOM_DLL"
#define LAYOUT_DLL "LAYOUT_DLL"
#define NETLIB_DLL "NETLIB_DLL"
#define PARSER_DLL "PARSER_DLL"
#define RDF_DLL "RDF_DLL"
#define XPCOM_DLL "XPCOM_DLL"
#endif
////////////////////////////////////////////////////////////////////////
// CIDs
// rdf
static NS_DEFINE_CID(kRDFServiceCID, NS_RDFSERVICE_CID);
static NS_DEFINE_CID(kRDFXMLDataSourceCID, NS_RDFXMLDATASOURCE_CID);
// xpcom
static NS_DEFINE_CID(kEventQueueServiceCID, NS_EVENTQUEUESERVICE_CID);
static NS_DEFINE_CID(kGenericFactoryCID, NS_GENERICFACTORY_CID);
////////////////////////////////////////////////////////////////////////
// IIDs
NS_DEFINE_IID(kIEventQueueServiceIID, NS_IEVENTQUEUESERVICE_IID);
#include "nsIMemory.h" // for the CID
static nsresult
SetupRegistry(void)
{
// netlib
static NS_DEFINE_CID(kIOServiceCID, NS_IOSERVICE_CID);
nsComponentManager::RegisterComponent(kIOServiceCID, NULL, NULL, NETLIB_DLL, PR_FALSE, PR_FALSE);
// parser
static NS_DEFINE_CID(kParserCID, NS_PARSER_IID);
static NS_DEFINE_CID(kWellFormedDTDCID, NS_WELLFORMEDDTD_CID);
nsComponentManager::RegisterComponent(kParserCID, NULL, NULL, PARSER_DLL, PR_FALSE, PR_FALSE);
nsComponentManager::RegisterComponent(kWellFormedDTDCID, NULL, NULL, PARSER_DLL, PR_FALSE, PR_FALSE);
// layout
static NS_DEFINE_CID(kNameSpaceManagerCID, NS_NAMESPACEMANAGER_CID);
nsComponentManager::RegisterComponent(kNameSpaceManagerCID, NULL, NULL, LAYOUT_DLL, PR_FALSE, PR_FALSE);
// xpcom
static NS_DEFINE_CID(kMemoryCID, NS_MEMORY_CID);
static NS_DEFINE_CID(kEventQueueCID, NS_EVENTQUEUE_CID);
nsComponentManager::RegisterComponent(kEventQueueServiceCID, NULL, NULL, XPCOM_DLL, PR_FALSE, PR_FALSE);
nsComponentManager::RegisterComponent(kEventQueueCID, NULL, NULL, XPCOM_DLL, PR_FALSE, PR_FALSE);
nsComponentManager::RegisterComponent(kGenericFactoryCID, NULL, NULL, XPCOM_DLL, PR_FALSE, PR_FALSE);
nsComponentManager::RegisterComponent(kMemoryCID, NULL, NULL, XPCOM_DLL, PR_FALSE, PR_FALSE);
return NS_OK;
}
////////////////////////////////////////////////////////////////////////
class Observer : public nsIRDFObserver
{
public:
Observer();
virtual ~Observer() {}
// nsISupports interface
NS_DECL_ISUPPORTS
// nsIRDFObserver interface
NS_DECL_NSIRDFOBSERVER
};
Observer::Observer()
{
NS_INIT_REFCNT();
}
NS_IMPL_ISUPPORTS(Observer, NS_GET_IID(nsIRDFObserver));
static nsresult
rdf_WriteOp(const char* aOp,
nsIRDFResource* aSource,
nsIRDFResource* aProperty,
nsIRDFNode* aTarget)
{
nsresult rv;
nsXPIDLCString source;
rv = aSource->GetValue(getter_Copies(source));
if (NS_FAILED(rv)) return rv;
nsXPIDLCString property;
rv = aProperty->GetValue(getter_Copies(property));
if (NS_FAILED(rv)) return rv;
nsCOMPtr<nsIRDFResource> resource;
nsCOMPtr<nsIRDFLiteral> literal;
printf("%.8s [%s]\n", aOp, (const char*) source);
printf(" --[%s]--\n", (const char*) property);
if ((resource = do_QueryInterface(aTarget)) != nsnull) {
nsXPIDLCString target;
rv = resource->GetValue(getter_Copies(target));
if (NS_FAILED(rv)) return rv;
printf(" ->[%s]\n", (const char*) target);
}
else if ((literal = do_QueryInterface(aTarget)) != nsnull) {
nsXPIDLString target;
rv = literal->GetValue(getter_Copies(target));
if (NS_FAILED(rv)) return rv;
char* p = nsAutoString(target).ToNewCString();
if (! p)
return NS_ERROR_OUT_OF_MEMORY;
printf(" ->\"%s\"\n", p);
nsCRT::free(p);
}
printf("\n");
return NS_OK;
}
NS_IMETHODIMP
Observer::OnAssert(nsIRDFDataSource* aDataSource,
nsIRDFResource* aSource,
nsIRDFResource* aProperty,
nsIRDFNode* aTarget)
{
return rdf_WriteOp("assert", aSource, aProperty, aTarget);
}
NS_IMETHODIMP
Observer::OnUnassert(nsIRDFDataSource* aDataSource,
nsIRDFResource* aSource,
nsIRDFResource* aProperty,
nsIRDFNode* aTarget)
{
return rdf_WriteOp("unassert", aSource, aProperty, aTarget);
}
NS_IMETHODIMP
Observer::OnChange(nsIRDFDataSource* aDataSource,
nsIRDFResource* aSource,
nsIRDFResource* aProperty,
nsIRDFNode* aOldTarget,
nsIRDFNode* aNewTarget)
{
nsresult rv;
rv = rdf_WriteOp("chg-from", aSource, aProperty, aOldTarget);
if (NS_FAILED(rv)) return rv;
rv = rdf_WriteOp("chg-to", aSource, aProperty, aNewTarget);
if (NS_FAILED(rv)) return rv;
return NS_OK;
}
NS_IMETHODIMP
Observer::OnMove(nsIRDFDataSource* aDataSource,
nsIRDFResource* aOldSource,
nsIRDFResource* aNewSource,
nsIRDFResource* aProperty,
nsIRDFNode* aTarget)
{
nsresult rv;
rv = rdf_WriteOp("mv-from", aOldSource, aProperty, aTarget);
if (NS_FAILED(rv)) return rv;
rv = rdf_WriteOp("mv-to", aNewSource, aProperty, aTarget);
if (NS_FAILED(rv)) return rv;
return NS_OK;
}
NS_IMETHODIMP
Observer::BeginUpdateBatch(nsIRDFDataSource* aDataSource)
{
return NS_OK;
}
NS_IMETHODIMP
Observer::EndUpdateBatch(nsIRDFDataSource* aDataSource)
{
return NS_OK;
}
////////////////////////////////////////////////////////////////////////
int
main(int argc, char** argv)
{
nsresult rv;
if (argc < 2) {
fprintf(stderr, "usage: %s <url> [<poll-interval>]\n", argv[0]);
return 1;
}
SetupRegistry();
// Get netlib off the floor...
NS_WITH_SERVICE(nsIEventQueueService, theEventQueueService, kEventQueueServiceCID, &rv);
if (NS_FAILED(rv)) return rv;
rv = theEventQueueService->CreateThreadEventQueue();
NS_ASSERTION(NS_SUCCEEDED(rv), "unable to create thread event queue");
if (NS_FAILED(rv)) return rv;
// Create a stream data source and initialize it on argv[1], which
// is hopefully a "file:" URL. (Actually, we can do _any_ kind of
// URL, but only a "file:" URL will be written back to disk.)
nsCOMPtr<nsIRDFDataSource> ds;
rv = nsComponentManager::CreateInstance(kRDFXMLDataSourceCID,
nsnull,
NS_GET_IID(nsIRDFDataSource),
getter_AddRefs(ds));
NS_ASSERTION(NS_SUCCEEDED(rv), "unable to create RDF/XML data source");
if (NS_FAILED(rv)) return rv;
nsCOMPtr<nsIRDFRemoteDataSource> remote
= do_QueryInterface(ds);
if (! remote)
return NS_ERROR_UNEXPECTED;
rv = remote->Init(argv[1]);
NS_ASSERTION(NS_SUCCEEDED(rv), "unable to initialize data source");
if (NS_FAILED(rv)) return rv;
// The do_QI() on the pointer is a hack to make sure that the new
// object gets AddRef()-ed.
nsCOMPtr<nsIRDFObserver> observer = do_QueryInterface(new Observer);
if (! observer)
return NS_ERROR_OUT_OF_MEMORY;
rv = ds->AddObserver(observer);
if (NS_FAILED(rv)) return rv;
while (1) {
// Okay, this should load the XML file...
rv = remote->Refresh(PR_TRUE);
NS_ASSERTION(NS_SUCCEEDED(rv), "unable to open datasource");
if (NS_FAILED(rv)) return rv;
if (argc <= 2)
break;
PRInt32 pollinterval = atol(argv[2]);
if (! pollinterval)
break;
PR_Sleep(PR_SecondsToInterval(pollinterval));
}
return NS_OK;
}
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