GIntBig OGRESRIFeatureServiceLayer::GetFeatureCount( int bForce )
{
GIntBig nFeatureCount = -1;
if( m_poAttrQuery == NULL && m_poFilterGeom == NULL )
{
CPLString osNewURL = CPLURLAddKVP(poDS->GetURL(), "returnCountOnly", "true");
CPLHTTPResult* pResult = NULL;
CPLErrorReset();
pResult = CPLHTTPFetch( osNewURL, NULL );
if( pResult != NULL && pResult->nDataLen != 0 && CPLGetLastErrorNo() == 0 &&
pResult->nStatus == 0 )
{
const char* pszCount = strstr((const char*)pResult->pabyData, "\"count\"");
if( pszCount )
{
pszCount = strchr(pszCount, ':');
if( pszCount )
{
pszCount++;
nFeatureCount = CPLAtoGIntBig(pszCount);
}
}
}
CPLHTTPDestroyResult( pResult );
}
if( nFeatureCount < 0 )
nFeatureCount = OGRLayer::GetFeatureCount(bForce);
return nFeatureCount;
}
OGRErr OGRESRIFeatureServiceLayer::GetExtent(OGREnvelope *psExtent, int bForce)
{
OGRErr eErr = OGRERR_FAILURE;
CPLString osNewURL = CPLURLAddKVP(poDS->GetURL(), "returnExtentOnly", "true");
osNewURL = CPLURLAddKVP(osNewURL, "f", "geojson");
CPLErrorReset();
CPLHTTPResult* pResult = CPLHTTPFetch( osNewURL, NULL );
if( pResult != NULL && pResult->nDataLen != 0 && CPLGetLastErrorNo() == 0 &&
pResult->nStatus == 0 )
{
const char* pszBBox = strstr((const char*)pResult->pabyData, "\"bbox\"");
if( pszBBox )
{
pszBBox = strstr(pszBBox, ":[");
if( pszBBox )
{
pszBBox+=2;
char** papszTokens = CSLTokenizeString2(pszBBox, ",", 0);
if( CSLCount(papszTokens) >= 4 )
{
psExtent->MinX = CPLAtof(papszTokens[0]);
psExtent->MinY = CPLAtof(papszTokens[1]);
psExtent->MaxX = CPLAtof(papszTokens[2]);
psExtent->MaxY = CPLAtof(papszTokens[3]);
eErr = OGRERR_NONE;
}
CSLDestroy(papszTokens);
}
}
}
CPLHTTPDestroyResult( pResult );
if( eErr == OGRERR_FAILURE )
eErr = OGRLayer::GetExtent(psExtent, bForce);
return eErr;
}