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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.
*
*/
#ifndef QPID_LEGACYSTORE_CURSOR_H
#define QPID_LEGACYSTORE_CURSOR_H
#include <boost/shared_ptr.hpp>
#include "db-inc.h"
namespace mrg{
namespace msgstore{
class Cursor
{
Dbc* cursor;
public:
typedef boost::shared_ptr<Db> db_ptr;
Cursor() : cursor(0) {}
virtual ~Cursor() { if(cursor) cursor->close(); }
void open(db_ptr db, DbTxn* txn, u_int32_t flags = 0) { db->cursor(txn, &cursor, flags); }
void close() { if(cursor) cursor->close(); cursor = 0; }
Dbc* get() { return cursor; }
Dbc* operator->() { return cursor; }
bool next(Dbt& key, Dbt& value) { return cursor->get(&key, &value, DB_NEXT) == 0; }
bool current(Dbt& key, Dbt& value) { return cursor->get(&key, &value, DB_CURRENT) == 0; }
};
}}
#endif // ifndef QPID_LEGACYSTORE_CURSOR_H
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