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//
// ArchiveStrategy.cpp
//
// Library: Data
// Package: Logging
// Module: ArchiveStrategy
//
// Copyright (c) 2004-2006, Applied Informatics Software Engineering GmbH.
// and Contributors.
//
// SPDX-License-Identifier: BSL-1.0
//
#include "Poco/Data/ArchiveStrategy.h"
#include "Poco/Ascii.h"
namespace Poco {
namespace Data {
using namespace Keywords;
//
// ArchiveStrategy
//
const std::string ArchiveStrategy::DEFAULT_ARCHIVE_DESTINATION = "T_POCO_LOG_ARCHIVE";
ArchiveStrategy::ArchiveStrategy(const std::string& connector,
const std::string& connect,
const std::string& source,
const std::string& destination):
_connector(connector),
_connect(connect),
_source(source),
_destination(destination)
{
open();
}
ArchiveStrategy::~ArchiveStrategy()
{
}
void ArchiveStrategy::open()
{
if (_connector.empty() || _connect.empty())
throw IllegalStateException("Connector and connect string must be non-empty.");
_pSession = new Session(_connector, _connect);
}
//
// ArchiveByAgeStrategy
//
ArchiveByAgeStrategy::ArchiveByAgeStrategy(const std::string& connector,
const std::string& connect,
const std::string& sourceTable,
const std::string& destinationTable):
ArchiveStrategy(connector, connect, sourceTable, destinationTable)
{
initStatements();
}
ArchiveByAgeStrategy::~ArchiveByAgeStrategy()
{
}
void ArchiveByAgeStrategy::archive()
{
if (!session().isConnected()) open();
DateTime now;
_archiveDateTime = now - _maxAge;
getCountStatement().execute();
if (_archiveCount > 0)
{
getCopyStatement().execute();
getDeleteStatement().execute();
}
}
void ArchiveByAgeStrategy::initStatements()
{
std::string src = getSource();
std::string dest = getDestination();
setCountStatement();
_archiveCount = 0;
std::string sql;
Poco::format(sql, "SELECT COUNT(*) FROM %s WHERE DateTime < ?", src);
getCountStatement() << sql, into(_archiveCount), use(_archiveDateTime);
setCopyStatement();
sql.clear();
Poco::format(sql, "INSERT INTO %s SELECT * FROM %s WHERE DateTime < ?", dest, src);
getCopyStatement() << sql, use(_archiveDateTime);
setDeleteStatement();
sql.clear();
Poco::format(sql, "DELETE FROM %s WHERE DateTime < ?", src);
getDeleteStatement() << sql, use(_archiveDateTime);
}
void ArchiveByAgeStrategy::setThreshold(const std::string& age)
{
std::string::const_iterator it = age.begin();
std::string::const_iterator end = age.end();
int n = 0;
while (it != end && Ascii::isSpace(*it)) ++it;
while (it != end && Ascii::isDigit(*it)) { n *= 10; n += *it++ - '0'; }
while (it != end && Ascii::isSpace(*it)) ++it;
std::string unit;
while (it != end && Ascii::isAlpha(*it)) unit += *it++;
Timespan::TimeDiff factor = Timespan::SECONDS;
if (unit == "minutes")
factor = Timespan::MINUTES;
else if (unit == "hours")
factor = Timespan::HOURS;
else if (unit == "days")
factor = Timespan::DAYS;
else if (unit == "weeks")
factor = 7*Timespan::DAYS;
else if (unit == "months")
factor = 30*Timespan::DAYS;
else if (unit != "seconds")
throw InvalidArgumentException("setMaxAge", age);
_maxAge = factor * n;
}
} } // namespace Poco::Data
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