Creating a branch for experimenting with some ideas for JMS client.rajith_jms_client

git-svn-id: https://svn.apache.org/repos/asf/qpid/branches/rajith_jms_client@1128369 13f79535-47bb-0310-9956-ffa450edef68

1 files changed, 153 insertions, 0 deletions

diff --git a/qpid/cpp/src/qmf/Query.cpp b/qpid/cpp/src/qmf/Query.cpp
new file mode 100644
index 0000000000..ee8ca38e59
--- /dev/null
+++ b/qpid/cpp/src/qmf/Query.cpp
@@ -0,0 +1,153 @@
+/*
+ *
+ * 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;
+}