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/*
*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (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.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*
*/
#include "qmf/PrivateImplRef.h"
#include "qmf/exceptions.h"
#include "qmf/QueryImpl.h"
#include "qmf/DataAddrImpl.h"
#include "qmf/SchemaIdImpl.h"
#include "qpid/messaging/AddressParser.h"
using namespace std;
using namespace qmf;
using qpid::types::Variant;
typedef PrivateImplRef<Query> PI;
Query::Query(QueryImpl* impl) { PI::ctor(*this, impl); }
Query::Query(const Query& s) : qmf::Handle<QueryImpl>() { PI::copy(*this, s); }
Query::~Query() { PI::dtor(*this); }
Query& Query::operator=(const Query& s) { return PI::assign(*this, s); }
Query::Query(QueryTarget t, const string& pr) { PI::ctor(*this, new QueryImpl(t, pr)); }
Query::Query(QueryTarget t, const string& c, const string& p, const string& pr) { PI::ctor(*this, new QueryImpl(t, c, p, pr)); }
Query::Query(QueryTarget t, const SchemaId& s, const string& pr) { PI::ctor(*this, new QueryImpl(t, s, pr)); }
Query::Query(const DataAddr& a) { PI::ctor(*this, new QueryImpl(a)); }
QueryTarget Query::getTarget() const { return impl->getTarget(); }
const DataAddr& Query::getDataAddr() const { return impl->getDataAddr(); }
const SchemaId& Query::getSchemaId() const { return impl->getSchemaId(); }
void Query::setPredicate(const Variant::List& pr) { impl->setPredicate(pr); }
const Variant::List& Query::getPredicate() const { return impl->getPredicate(); }
bool Query::matchesPredicate(const qpid::types::Variant::Map& map) const { return impl->matchesPredicate(map); }
QueryImpl::QueryImpl(const Variant::Map& map) : predicateCompiled(false)
{
Variant::Map::const_iterator iter;
iter = map.find("_what");
if (iter == map.end())
throw QmfException("Query missing _what element");
const string& targetString(iter->second.asString());
if (targetString == "OBJECT") target = QUERY_OBJECT;
else if (targetString == "OBJECT_ID") target = QUERY_OBJECT_ID;
else if (targetString == "SCHEMA") target = QUERY_SCHEMA;
else if (targetString == "SCHEMA_ID") target = QUERY_SCHEMA_ID;
else
throw QmfException("Query with invalid _what value: " + targetString);
iter = map.find("_object_id");
if (iter != map.end()) {
auto_ptr<DataAddrImpl> addrImpl(new DataAddrImpl(iter->second.asMap()));
dataAddr = DataAddr(addrImpl.release());
}
iter = map.find("_schema_id");
if (iter != map.end()) {
auto_ptr<SchemaIdImpl> sidImpl(new SchemaIdImpl(iter->second.asMap()));
schemaId = SchemaId(sidImpl.release());
}
iter = map.find("_where");
if (iter != map.end())
predicate = iter->second.asList();
}
Variant::Map QueryImpl::asMap() const
{
Variant::Map map;
string targetString;
switch (target) {
case QUERY_OBJECT : targetString = "OBJECT"; break;
case QUERY_OBJECT_ID : targetString = "OBJECT_ID"; break;
case QUERY_SCHEMA : targetString = "SCHEMA"; break;
case QUERY_SCHEMA_ID : targetString = "SCHEMA_ID"; break;
}
map["_what"] = targetString;
if (dataAddr.isValid())
map["_object_id"] = DataAddrImplAccess::get(dataAddr).asMap();
if (schemaId.isValid())
map["_schema_id"] = SchemaIdImplAccess::get(schemaId).asMap();
if (!predicate.empty())
map["_where"] = predicate;
return map;
}
bool QueryImpl::matchesPredicate(const qpid::types::Variant::Map& data) const
{
if (predicate.empty())
return true;
if (!predicateCompiled) {
expression.reset(new Expression(predicate));
predicateCompiled = true;
}
return expression->evaluate(data);
}
void QueryImpl::parsePredicate(const string& pred)
{
if (pred.empty())
return;
if (pred[0] == '[') {
//
// Parse this as an AddressParser list.
//
qpid::messaging::AddressParser parser(pred);
parser.parseList(predicate);
} else
throw QmfException("Invalid predicate format");
}
QueryImpl& QueryImplAccess::get(Query& item)
{
return *item.impl;
}
const QueryImpl& QueryImplAccess::get(const Query& item)
{
return *item.impl;
}
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