Void WbemServices::ExecQuery(const TChar* query, EnumCallback callback)
{
Com::Ptr<IEnumWbemClassObject> enumerator;
auto hr = m_services->ExecQuery(L"WQL", _bstr_t(query), WBEM_FLAG_FORWARD_ONLY, nullptr, &enumerator);
if (FAILED(hr))
{
StringW wql(query);
TRACE_ERROR(L"Exception while executing WQL query: %s", wql.GetBuffer());
THROW_WIN32_EXCEPTION(hr);
}
while (nullptr != enumerator)
{
ULONG returned = 0;
Com::Ptr<IWbemClassObject> object;
auto hr = enumerator->Next(WBEM_INFINITE, 1, &object, &returned);
if (0 == returned || nullptr == object)
{
break;
}
auto next = callback(WbemClassObject(std::move(object)));
if (!next)
{
break;
}
}
}
QueryExpression QueryExpression::operator=(const QueryExpression& rhs)
{
if (this == &rhs)
return *this;
if (_ss != NULL)
delete _ss;
_ss = NULL;
if (rhs._ss != NULL)
{
String cql("CIM:CQL");
String wql("WQL");
#ifndef PEGASUS_DISABLE_CQL
if (rhs._queryLang == cql)
{
CQLSelectStatement* tempSS = dynamic_cast<CQLSelectStatement*>(rhs._ss);
if (tempSS != NULL)
_ss = new CQLSelectStatement(*tempSS);
}
else
#endif
if (rhs._queryLang == wql)
{
WQLSelectStatement* tempSS = dynamic_cast<WQLSelectStatement*>(rhs._ss);
if (tempSS != NULL)
_ss = new WQLSelectStatement(*tempSS);
}
}
_queryLang = rhs._queryLang;
return *this;
}
QueryExpression::QueryExpression(const QueryExpression& expr):
_queryLang(expr._queryLang)
{
if (expr._ss == NULL)
{
_ss = NULL;
}
else
{
_ss = NULL;
String cql("CIM:CQL");
String wql("WQL");
#ifndef PEGASUS_DISABLE_CQL
if (expr._queryLang == cql)
{
CQLSelectStatement* tempSS = dynamic_cast<CQLSelectStatement*>(expr._ss);
if (tempSS != NULL)
_ss = new CQLSelectStatement(*tempSS);
}
else
#endif
if (expr._queryLang == wql)
{
WQLSelectStatement* tempSS = dynamic_cast<WQLSelectStatement*>(expr._ss);
if (tempSS != NULL)
_ss = new WQLSelectStatement(*tempSS);
}
}
}
int main()
{
CIMClient client;
try
{
client.connectLocal();
}
catch (Exception& e)
{
PEGASUS_STD (cerr) << "Exception: " << e.getMessage()
<< PEGASUS_STD (endl);
PEGASUS_STD (cerr) << "connectLocal failed"
<< PEGASUS_STD (endl);
return -1;
}
String query1="SELECT MethodName FROM Test_IndicationProviderClass";
// Note that CQL expects single quote around string literals,
// while WQL expects double quote.
// Note that CQL use <> for the inequality operator.
String query2wql =
"SELECT MethodName FROM Test_IndicationProviderClass "
"WHERE IndicationIdentifier != \"x\"";
String query2cql =
"SELECT MethodName FROM Test_IndicationProviderClass "
"WHERE IndicationIdentifier <> 'x'";
String wql("WQL");
String cql("DMTF:CQL");
PEGASUS_STD (cout) << "+++++ start wql test" << PEGASUS_STD (endl);
int rc;
rc = _test(client, wql, query1, query2wql);
if (rc != 0)
return rc;
PEGASUS_STD (cout) << "+++++ start dupliacte subscription test"
<< PEGASUS_STD (endl);
_testDuplicate(client);
PEGASUS_STD (cout) << "+++++ duplicate subscription test completed"
<< PEGASUS_STD (endl);
PEGASUS_STD (cout) << "+++++ start concurrent subscription test"
<< PEGASUS_STD (endl);
_testConcurrent(client);
PEGASUS_STD (cout) << "+++++ concurrent subscription test completed"
<< PEGASUS_STD (endl);
#ifdef PEGASUS_ENABLE_CQL
PEGASUS_STD (cout) << "+++++ start cql test" << PEGASUS_STD (endl);
return _test(client, cql, query1, query2cql);
#else
PEGASUS_STD (cout) << "+++++ cql test disabled" << PEGASUS_STD (endl);
return 0;
#endif
}
QueryExpression::QueryExpression(String queryLang, String query, QueryContext& ctx):
_queryLang(queryLang)
{
String cql("CIM:CQL");
String wql("WQL");
#ifndef PEGASUS_DISABLE_CQL
if (queryLang == cql)
{
CQLSelectStatement* cqlss = new CQLSelectStatement(queryLang, query, ctx);
// Compile the statement
CQLParser::parse(query, *cqlss);
// Finish checking the statement for CQL by applying the class contexts to
// the chained identifiers.
cqlss->applyContext();
_ss = cqlss;
}
else
#endif
if (queryLang == wql)
{
WQLSelectStatement* wqlss = new WQLSelectStatement(queryLang, query, ctx);
// Compile the statement
WQLParser::parse(query, *wqlss);
_ss = wqlss;
}
else
{
throw QueryLanguageInvalidException(
MessageLoaderParms(String("Query.QueryExpression.INVALID_QUERY_LANGUAGE"),
String("The query language specified is invalid: $0."),
queryLang));
}
}
QueryExpression::QueryExpression(String queryLang, String query):
_queryLang(queryLang)
{
String cql("CIM:CQL");
String wql("WQL");
#ifndef PEGASUS_DISABLE_CQL
if (queryLang == cql)
{
CQLSelectStatement* cqlss = new CQLSelectStatement(queryLang, query);
// Note: cannot call parse the CQLSelectStatement
// because there is no QueryContext.
// The parse will happen when setQueryContext is called.
_ss = cqlss;
}
else
#endif
if (queryLang == wql)
{
WQLSelectStatement* wqlss = new WQLSelectStatement(queryLang, query);
// Compile the statement
WQLParser::parse(query, *wqlss);
_ss = wqlss;
}
else
{
throw QueryLanguageInvalidException(
MessageLoaderParms(String("Query.QueryExpression.INVALID_QUERY_LANGUAGE"),
String("The query language specified is invalid: $0."),
queryLang));
}
}
