mirror of
https://github.com/worldforge/cyphesis
synced 2026-08-13 12:26:04 -04:00
0ce4f91307
* common/Database.cpp, common/Database.h: Add method to generalise encoding atlas maps to string. Make the codec used by the database code into a typedef, so production systems can use a more efficient one. * server/Persistor.cpp, server/Persistor_impl.h: Persist Entity::attributes as an atlas encoded string column. Not yet restored.
915 lines
27 KiB
C++
915 lines
27 KiB
C++
// This file may be redistributed and modified only under the terms of
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// the GNU General Public License (See COPYING for details).
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// Copyright (C) 2001 Alistair Riddoch
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#include "Database.h"
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#include "log.h"
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#include "debug.h"
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#include "globals.h"
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#include "stringstream.h"
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#include <Atlas/Message/Encoder.h>
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#include <Atlas/Codecs/XML.h>
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#include <varconf/Config.h>
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#include <iostream>
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using Atlas::Message::Object;
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typedef Atlas::Codecs::XML Serialiser;
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static const bool debug_flag = false;
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Database * Database::m_instance = NULL;
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Database::Database() : rule_db("rules"),
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m_connection(NULL)
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{
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}
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bool Database::tuplesOk()
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{
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bool status = false;
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PGresult * res;
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while ((res = PQgetResult(m_connection)) != NULL) {
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if (PQresultStatus(res) == PGRES_TUPLES_OK) {
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status = true;
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}
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};
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return status;
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}
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bool Database::commandOk()
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{
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bool status = false;
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PGresult * res;
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while ((res = PQgetResult(m_connection)) != NULL) {
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if (PQresultStatus(res) == PGRES_COMMAND_OK) {
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status = true;
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}
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};
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return status;
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}
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bool Database::initConnection(bool createDatabase)
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{
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std::stringstream conninfos;
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if (global_conf->findItem("cyphesis", "dbserver")) {
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conninfos << "host=" << std::string(global_conf->getItem("cyphesis", "dbserver")) << " ";
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}
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std::string dbname = "cyphesis";
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if (global_conf->findItem("cyphesis", "dbname")) {
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dbname = std::string(global_conf->getItem("cyphesis", "dbname"));
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}
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conninfos << "dbname=" << dbname << " ";
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if (global_conf->findItem("cyphesis", "dbuser")) {
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conninfos << "user=" << std::string(global_conf->getItem("cyphesis", "dbuser")) << " ";
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}
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if (global_conf->findItem("cyphesis", "dbpasswd")) {
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conninfos << "password=" << std::string(global_conf->getItem("cyphesis", "dbpasswd")) << " ";
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}
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const std::string cinfo = conninfos.str();
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if (createDatabase) {
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// Currently not able to create the database
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}
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m_connection = PQconnectdb(cinfo.c_str());
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if ((m_connection == NULL) || (PQstatus(m_connection) != CONNECTION_OK)) {
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log(ERROR, "Database connection failed");
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return false;
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}
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return true;
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}
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bool Database::initRule(bool createTables)
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{
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int status = 0;
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status = PQsendQuery(m_connection, "SELECT * FROM rules WHERE id = 'test' AND contents = 'test';");
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if (!status) {
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reportError();
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return false;
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}
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if (!tuplesOk()) {
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debug(std::cout << "Rule table does not exist"
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<< std::endl << std::flush;);
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if (createTables) {
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status = PQsendQuery(m_connection, "CREATE TABLE rules ( id varchar(80) PRIMARY KEY, contents text );");
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if (!status) {
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reportError();
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return false;
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}
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if (!commandOk()) {
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log(ERROR, "Error creating rules table in database");
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reportError();
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return false;
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}
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} else {
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log(ERROR, "Server table does not exist in database");
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return false;
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}
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}
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return true;
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}
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void Database::shutdownConnection()
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{
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PQfinish(m_connection);
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}
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Database * Database::instance()
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{
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if (m_instance == NULL) {
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m_instance = new Database();
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}
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return m_instance;
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}
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bool Database::decodeObject(const std::string & data,
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Atlas::Message::Object::MapType &o)
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{
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std::stringstream str(data, std::ios::in);
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Serialiser codec(str, &m_d);
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Atlas::Message::Encoder enc(&codec);
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// Clear the decoder
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m_d.get();
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codec.Poll();
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if (!m_d.check()) {
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log(WARNING, "Database entry does not appear to be decodable");
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return false;
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}
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o = m_d.get();
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return true;
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}
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bool Database::encodeObject(const Atlas::Message::Object::MapType & o,
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std::string & data)
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{
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std::stringstream str;
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Serialiser codec(str, &m_d);
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Atlas::Message::Encoder enc(&codec);
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codec.StreamBegin();
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enc.StreamMessage(o);
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codec.StreamEnd();
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data = str.str();
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return true;
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}
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bool Database::getObject(const std::string & table, const std::string & key,
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Atlas::Message::Object::MapType & o)
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{
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debug(std::cout << "Database::getObject() " << table << "." << key
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<< std::endl << std::flush;);
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std::string query = std::string("SELECT * FROM ") + table + " WHERE id = '" + key + "';";
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int status = PQsendQuery(m_connection, query.c_str());
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if (!status) {
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reportError();
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return false;
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}
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PGresult * res;
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if ((res = PQgetResult(m_connection)) == NULL) {
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debug(std::cout << "Error accessing " << key << " in " << table
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<< " table" << std::endl << std::flush;);
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return false;
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}
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if ((PQntuples(res) < 1) || (PQnfields(res) < 2)) {
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debug(std::cout << "No entry for " << key << " in " << table
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<< " table" << std::endl << std::flush;);
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while ((res = PQgetResult(m_connection)) != NULL);
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return false;
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}
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const char * data = PQgetvalue(res, 0, 1);
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debug(std::cout << "Got record " << key << " from database, value " << data
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<< std::endl << std::flush;);
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bool ret = decodeObject(data, o);
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while (PQgetResult(m_connection) != NULL) {
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log(ERROR, "Extra database result to simple query.");
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};
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return ret;
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}
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bool Database::putObject(const std::string & table,
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const std::string & key,
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const Atlas::Message::Object::MapType & o)
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{
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debug(std::cout << "Database::putObject() " << table << "." << key
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<< std::endl << std::flush;);
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std::stringstream str;
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Serialiser codec(str, &m_d);
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Atlas::Message::Encoder enc(&codec);
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codec.StreamBegin();
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enc.StreamMessage(o);
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codec.StreamEnd();
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debug(std::cout << "Encoded to: " << str.str().c_str() << " "
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<< str.str().size() << std::endl << std::flush;);
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std::string query = std::string("INSERT INTO ") + table + " VALUES ('" + key + "', '" + str.str() + "');";
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int status = PQsendQuery(m_connection, query.c_str());
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if (!status) {
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reportError();
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return false;
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}
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if (!commandOk()) {
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debug(std::cerr << "Failed to insert item " << key << " into " << table
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<< " table" << std::endl << std::flush;);
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return false;
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}
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return true;
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}
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bool Database::updateObject(const std::string & table,
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const std::string & key,
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const Atlas::Message::Object::MapType & o)
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{
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debug(std::cout << "Database::updateObject() " << table << "." << key
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<< std::endl << std::flush;);
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std::stringstream str;
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Serialiser codec(str, &m_d);
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Atlas::Message::Encoder enc(&codec);
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codec.StreamBegin();
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enc.StreamMessage(o);
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codec.StreamEnd();
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std::string query = std::string("UPDATE ") + table + " SET contents = '" +
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str.str() + "' WHERE id='" + key + "';";
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int status = PQsendQuery(m_connection, query.c_str());
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if (!status) {
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reportError();
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return false;
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}
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if (!commandOk()) {
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debug(std::cerr << "Failed to update item " << key << " into " << table
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<< " table" << std::endl << std::flush;);
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return false;
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}
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return true;
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}
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bool Database::delObject(const std::string & table, const std::string & key)
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{
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#if 0
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Dbt key, data;
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key.set_data((void*)keystr);
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key.set_size(strlen(keystr) + 1);
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int err;
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if ((err = db.del(NULL, &key, 0)) != 0) {
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debug(cout << "db.del.ERROR! " << err << endl << flush;);
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return false;
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}
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return true;
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#endif
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return true;
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}
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bool Database::getTable(const std::string & table, Object::MapType &o)
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{
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std::string query = std::string("SELECT * FROM ") + table + ";";
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int status = PQsendQuery(m_connection, query.c_str());
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if (!status) {
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reportError();
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return false;
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}
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PGresult * res;
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if ((res = PQgetResult(m_connection)) == NULL) {
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debug(std::cout << "Error accessing " << table
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<< " table" << std::endl << std::flush;);
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return false;
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}
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int results = PQntuples(res);
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if ((results < 1) || (PQnfields(res) < 2)) {
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debug(std::cout << "No entries in " << table
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<< " table" << std::endl << std::flush;);
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while ((res = PQgetResult(m_connection)) != NULL);
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return false;
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}
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// const char * data = PQgetvalue(res, 0, 1);
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Object::MapType t;
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for(int i = 0; i < results; i++) {
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const char * key = PQgetvalue(res, i, 0);
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const char * data = PQgetvalue(res, i, 1);
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debug(std::cout << "Got record " << key << " from database, value "
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<< data << std::endl << std::flush;);
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if (decodeObject(data, t)) {
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o[key] = t;
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}
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}
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while ((res = PQgetResult(m_connection)) != NULL) {
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log(ERROR, "Extra database result to simple query.");
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};
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return true;
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}
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bool Database::clearTable(const std::string & table)
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{
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std::string query = std::string("DELETE FROM ") + table + ";";
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int status = PQsendQuery(m_connection, query.c_str());
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if (!status) {
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reportError();
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return false;
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}
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if (!commandOk()) {
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debug(std::cout << "Error clearing " << table
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<< " table" << std::endl << std::flush;);
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reportError();
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return false;
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}
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return true;
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}
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void Database::reportError()
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{
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std::string msg = std::string("DATABASE ERROR: ") +
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PQerrorMessage(m_connection);
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log(ERROR, msg.c_str());
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}
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const DatabaseResult Database::runSimpleSelectQuery(const std::string & query)
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{
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debug(std::cout << "QUERY: " << query << std::endl << std::flush;);
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int status = PQsendQuery(m_connection, query.c_str());
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if (!status) {
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log(ERROR, "Database query error.");
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reportError();
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return DatabaseResult(0);
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}
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debug(std::cout << "done" << std::endl << std::flush;);
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PGresult * res;
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if ((res = PQgetResult(m_connection)) == NULL) {
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log(ERROR, "Error selecting.");
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reportError();
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debug(std::cout << "Row query didn't work"
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<< std::endl << std::flush;);
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return DatabaseResult(0);
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}
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if (PQresultStatus(res) != PGRES_TUPLES_OK) {
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log(ERROR, "Error selecting row.");
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std::cout << "QUERY: " << query << std::endl << std::flush;
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reportError();
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res = 0;
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}
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while (PQgetResult(m_connection) != NULL) {
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log(ERROR, "Extra database result to simple query.");
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};
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return DatabaseResult(res);
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}
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bool Database::runCommandQuery(const std::string & query)
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{
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int status = PQsendQuery(m_connection, query.c_str());
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if (!status) {
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log(ERROR, "Database query error.");
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reportError();
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return false;
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}
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if (!commandOk()) {
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log(ERROR, "Error running command query row.");
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log(NOTICE, query.c_str());
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reportError();
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debug(std::cout << "Row query didn't work"
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<< std::endl << std::flush;);
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} else {
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debug(std::cout << "Query worked" << std::endl << std::flush;);
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return true;
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}
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return false;
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}
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bool Database::registerRelation(const std::string & name, RelationType kind)
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{
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std::string query = "SELECT * FROM ";
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query += name;
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query += " WHERE id = 0 AND ";
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query += name;
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query += " = 0;";
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std::string createquery = "CREATE TABLE ";
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createquery += name;
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if ((kind == ManyToOne) || (kind == OneToOne)) {
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createquery += " (id integer PRIMARY KEY, ";
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} else {
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createquery += " (id integer, ";
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}
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createquery += name;
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createquery += " integer";
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if ((kind == OneToOne) || (kind == OneToMany)) {
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createquery += " UNIQUE);";
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} else {
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createquery += ");";
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}
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debug(std::cout << "QUERY: " << query << std::endl << std::flush;);
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int status = PQsendQuery(m_connection, query.c_str());
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if (!status) {
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log(ERROR, "Database query error.");
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reportError();
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return false;
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}
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if (!tuplesOk()) {
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debug(reportError(););
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debug(std::cout << "Table does not yet exist"
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<< std::endl << std::flush;);
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} else {
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debug(std::cout << "Table exists" << std::endl << std::flush;);
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return true;
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}
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debug(std::cout << "CREATE QUERY: " << createquery
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<< std::endl << std::flush;);
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if (!runCommandQuery(createquery)) {
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return false;
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}
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if ((kind == ManyToOne) || (kind == OneToOne)) {
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return true;
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} else {
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std::string indexQuery = "CREATE INDEX ";
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indexQuery += name;
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indexQuery += "_id_idx ON ";
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indexQuery += name;
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indexQuery += " (id);";
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return runCommandQuery(indexQuery);
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}
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}
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const DatabaseResult Database::selectRelation(const std::string & name,
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const std::string & id)
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{
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std::string query = "SELECT ";
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query += name;
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query += " FROM ";
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query += name;
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query += " WHERE id = ";
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query += id;
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query += ";";
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debug(std::cout << "Selecting on id = " << id << " ... " << std::flush;);
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return runSimpleSelectQuery(query);
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}
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bool Database::createRelationRow(const std::string & name,
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const std::string & id,
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const std::string & other)
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{
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std::string query = "INSERT INTO ";
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query += name;
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query += " (id, ";
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query += name;
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query += ") VALUES (";
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query += id;
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query += ", ";
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query += other;
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query += ");";
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return runCommandQuery(query);
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}
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bool Database::registerSimpleTable(const std::string & name,
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const Atlas::Message::Object::MapType & row)
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{
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if (row.empty()) {
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log(ERROR, "Attempt to create empty database table");
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}
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// Check whether the table exists
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std::string query = "SELECT * FROM ";
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std::string createquery = "CREATE TABLE ";
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query += name;
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createquery += name;
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query += " WHERE id = 0";
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createquery += " (id integer UNIQUE PRIMARY KEY";
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Atlas::Message::Object::MapType::const_iterator I = row.begin();
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for(; I != row.end(); ++I) {
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query += " AND ";
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createquery += ", ";
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const std::string & column = I->first;
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query += column;
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createquery += column;
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const Atlas::Message::Object & type = I->second;
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if (type.IsString()) {
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query += " LIKE 'foo'";
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int size = type.AsString().size();
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if (size == 0) {
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createquery += " text";
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} else {
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char buf[32];
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snprintf(buf, 32, "%d", size);
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createquery += " varchar(";
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createquery += buf;
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createquery += ")";
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}
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} else if (type.IsInt()) {
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query += " = 1";
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createquery += " integer";
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} else if (type.IsFloat()) {
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query += " = 1.0";
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createquery += " float";
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} else {
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log(ERROR, "Illegal column type in database entity row");
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}
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}
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query += ";";
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debug(std::cout << "QUERY: " << query << std::endl << std::flush;);
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int status = PQsendQuery(m_connection, query.c_str());
|
|
if (!status) {
|
|
log(ERROR, "Database query error.");
|
|
reportError();
|
|
return false;
|
|
}
|
|
if (!tuplesOk()) {
|
|
debug(reportError(););
|
|
debug(std::cout << "Table does not yet exist"
|
|
<< std::endl << std::flush;);
|
|
} else {
|
|
debug(std::cout << "Table exists" << std::endl << std::flush;);
|
|
return true;
|
|
}
|
|
|
|
createquery += ");";
|
|
debug(std::cout << "CREATE QUERY: " << createquery
|
|
<< std::endl << std::flush;);
|
|
return runCommandQuery(createquery);
|
|
}
|
|
|
|
const DatabaseResult Database::selectSimpleRow(const std::string & id,
|
|
const std::string & name)
|
|
{
|
|
std::string query = "SELECT * FROM ";
|
|
query += name;
|
|
query += " WHERE id = ";
|
|
query += id;
|
|
query += ";";
|
|
|
|
debug(std::cout << "Selecting on id = " << id << " ... " << std::flush;);
|
|
|
|
return runSimpleSelectQuery(query);
|
|
}
|
|
|
|
const DatabaseResult Database::selectSimpleRowBy(const std::string & name,
|
|
const std::string & column,
|
|
const std::string & value)
|
|
{
|
|
std::string query = "SELECT * FROM ";
|
|
query += name;
|
|
query += " WHERE ";
|
|
query += column;
|
|
query += " = ";
|
|
query += value;
|
|
query += ";";
|
|
|
|
debug(std::cout << "Selecting on " << column << " = " << value
|
|
<< " ... " << std::flush;);
|
|
|
|
return runSimpleSelectQuery(query);
|
|
}
|
|
|
|
bool Database::createSimpleRow(const std::string & name,
|
|
const std::string & id,
|
|
const std::string & columns,
|
|
const std::string & values)
|
|
{
|
|
std::string query = "INSERT INTO ";
|
|
query += name;
|
|
query += " ( id, ";
|
|
query += columns;
|
|
query += " ) VALUES ( ";
|
|
query += id;
|
|
query += ", ";
|
|
query += values;
|
|
query += ");";
|
|
|
|
return runCommandQuery(query);
|
|
}
|
|
|
|
bool Database::registerEntityIdGenerator()
|
|
{
|
|
int status = PQsendQuery(m_connection, "SELECT * FROM entity_ent_id_seq;");
|
|
if (!status) {
|
|
log(ERROR, "Database query error.");
|
|
reportError();
|
|
return false;
|
|
}
|
|
if (!tuplesOk()) {
|
|
debug(reportError(););
|
|
debug(std::cout << "Sequence does not yet exist"
|
|
<< std::endl << std::flush;);
|
|
} else {
|
|
debug(std::cout << "Sequence exists" << std::endl << std::flush;);
|
|
return true;
|
|
}
|
|
return runCommandQuery("CREATE SEQUENCE entity_ent_id_seq;");
|
|
}
|
|
|
|
std::string Database::getEntityId()
|
|
{
|
|
int status = PQsendQuery(m_connection,
|
|
"SELECT nextval('entity_ent_id_seq');");
|
|
if (!status) {
|
|
log(ERROR, "Database query error.");
|
|
reportError();
|
|
return false;
|
|
}
|
|
PGresult * res;
|
|
if ((res = PQgetResult(m_connection)) == NULL) {
|
|
log(ERROR, "Error getting new ID.");
|
|
reportError();
|
|
return "";
|
|
}
|
|
while (PQgetResult(m_connection) != NULL) {
|
|
log(ERROR, "Extra database result to simple query.");
|
|
};
|
|
const char * id = PQgetvalue(res, 0, 0);
|
|
return id;
|
|
}
|
|
|
|
bool Database::registerEntityTable(const std::string & classname,
|
|
const Atlas::Message::Object::MapType & row,
|
|
const std::string & parent)
|
|
// TODO
|
|
// row probably needs to be richer to provide a more detailed, and possibly
|
|
// ordered description of each the columns required.
|
|
{
|
|
if (entityTables.find(classname) != entityTables.end()) {
|
|
log(ERROR, "Attempt to register entity table already registered.");
|
|
debug(std::cerr << "Table for class " << classname
|
|
<< " already registered." << std::endl << std::flush;);
|
|
return false;
|
|
}
|
|
if (!parent.empty()) {
|
|
if (entityTables.empty()) {
|
|
log(ERROR, "Registering non-root entity table when no root registered.");
|
|
debug(std::cerr << "Table for class " << classname
|
|
<< " cannot be non-root."
|
|
<< std::endl << std::flush;);
|
|
return false;
|
|
}
|
|
if (entityTables.find(parent) == entityTables.end()) {
|
|
log(ERROR, "Registering entity table with non existant parent.");
|
|
debug(std::cerr << "Table for class " << classname
|
|
<< " cannot have non-existant parent " << parent
|
|
<< std::endl << std::flush;);
|
|
return false;
|
|
}
|
|
} else if (!entityTables.empty()) {
|
|
log(ERROR, "Attempt to create root entity class table when one already registered.");
|
|
debug(std::cerr << "Table for class " << classname
|
|
<< " cannot be root." << std::endl << std::flush;);
|
|
return false;
|
|
} else {
|
|
if (!registerEntityIdGenerator()) {
|
|
log(ERROR, "Faled to register Id generator in database.");
|
|
}
|
|
}
|
|
// At this point we know the table request make sense.
|
|
entityTables[classname] = parent;
|
|
const std::string tablename = classname + "_ent";
|
|
// Check whether the table exists
|
|
std::string query = "SELECT * FROM ";
|
|
std::string createquery = "CREATE TABLE ";
|
|
query += tablename;
|
|
createquery += tablename;
|
|
if (!row.empty()) {
|
|
query += " WHERE ";
|
|
}
|
|
createquery += " (";
|
|
if (parent.empty()) {
|
|
createquery += "id integer UNIQUE PRIMARY KEY, ";
|
|
}
|
|
Atlas::Message::Object::MapType::const_iterator I = row.begin();
|
|
for(; I != row.end(); ++I) {
|
|
if (I != row.begin()) {
|
|
query += " AND ";
|
|
createquery += ", ";
|
|
}
|
|
const std::string & column = I->first;
|
|
query += column;
|
|
createquery += column;
|
|
const Atlas::Message::Object & type = I->second;
|
|
if (type.IsString()) {
|
|
query += " LIKE 'foo'";
|
|
int size = type.AsString().size();
|
|
if (size == 0) {
|
|
createquery += " text";
|
|
} else {
|
|
char buf[32];
|
|
snprintf(buf, 32, "%d", size);
|
|
createquery += " varchar(";
|
|
createquery += buf;
|
|
createquery += ")";
|
|
}
|
|
} else if (type.IsInt()) {
|
|
query += " = 1";
|
|
createquery += " integer";
|
|
} else if (type.IsFloat()) {
|
|
query += " = 1.0";
|
|
createquery += " float";
|
|
} else {
|
|
log(ERROR, "Illegal column type in database entity row");
|
|
}
|
|
}
|
|
query += ";";
|
|
|
|
debug(std::cout << "QUERY: " << query << std::endl << std::flush;);
|
|
int status = PQsendQuery(m_connection, query.c_str());
|
|
if (!status) {
|
|
log(ERROR, "Database query error.");
|
|
reportError();
|
|
return false;
|
|
}
|
|
if (!tuplesOk()) {
|
|
debug(reportError(););
|
|
debug(std::cout << "Table does not yet exist"
|
|
<< std::endl << std::flush;);
|
|
} else {
|
|
debug(std::cout << "Table exists" << std::endl << std::flush;);
|
|
return true;
|
|
}
|
|
// create table
|
|
createquery += ")";
|
|
if (!parent.empty()) {
|
|
createquery += " INHERITS (";
|
|
createquery += parent;
|
|
createquery += "_ent)";
|
|
}
|
|
createquery += ";";
|
|
debug(std::cout << "CREATE QUERY: " << createquery
|
|
<< std::endl << std::flush;);
|
|
|
|
return runCommandQuery(createquery);
|
|
}
|
|
|
|
bool Database::createEntityRow(const std::string & classname,
|
|
const std::string & id,
|
|
const std::string & columns,
|
|
const std::string & values)
|
|
{
|
|
TableDict::const_iterator I = entityTables.find(classname);
|
|
if (I == entityTables.end()) {
|
|
log(ERROR, "Attempt to insert into entity table not registered.");
|
|
return false;
|
|
}
|
|
std::string query = "INSERT INTO ";
|
|
query += classname;
|
|
query += "_ent ( id, ";
|
|
query += columns;
|
|
query += " ) VALUES ( ";
|
|
query += id;
|
|
query += ", ";
|
|
query += values;
|
|
query += ");";
|
|
debug(std::cout << "QUERY: " << query << std::endl << std::flush;);
|
|
|
|
return runCommandQuery(query);
|
|
}
|
|
|
|
bool Database::updateEntityRow(const std::string & classname,
|
|
const std::string & id,
|
|
const std::string & columns)
|
|
{
|
|
if (columns.empty()) {
|
|
log(WARNING, "Update query passed to database with no columns.");
|
|
return false;
|
|
}
|
|
TableDict::const_iterator I = entityTables.find(classname);
|
|
if (I == entityTables.end()) {
|
|
log(ERROR, "Attempt to update entity table not registered.");
|
|
return false;
|
|
}
|
|
std::string query = "UPDATE ";
|
|
query += classname;
|
|
query += "_ent SET ";
|
|
query += columns;
|
|
query += " WHERE id='";
|
|
query += id;
|
|
query += "';";
|
|
debug(std::cout << "QUERY: " << query << std::endl << std::flush;);
|
|
|
|
return runCommandQuery(query);
|
|
}
|
|
|
|
bool Database::removeEntityRow(const std::string & classname,
|
|
const std::string & id)
|
|
{
|
|
TableDict::const_iterator I = entityTables.find(classname);
|
|
if (I == entityTables.end()) {
|
|
log(ERROR, "Attempt to remove from entity table not registered.");
|
|
return false;
|
|
}
|
|
std::string query = "DELETE FROM ";
|
|
query += classname;
|
|
query += "_ent WHERE id='";
|
|
query += id;
|
|
query += "';";
|
|
debug(std::cout << "QUERY: " << query << std::endl << std::flush;);
|
|
|
|
return runCommandQuery(query);
|
|
}
|
|
|
|
const DatabaseResult Database::selectEntityRow(const std::string & id,
|
|
const std::string & classname)
|
|
{
|
|
std::string table = (classname == "" ? "entity" : classname);
|
|
TableDict::const_iterator I = entityTables.find(classname);
|
|
if (I == entityTables.end()) {
|
|
log(ERROR, "Attempt to select from entity table not registered.");
|
|
return DatabaseResult(0);
|
|
}
|
|
std::string query = "SELECT * FROM ";
|
|
query += table;
|
|
query += "_ent WHERE id='";
|
|
query += id;
|
|
query += "';";
|
|
|
|
debug(std::cout << "Selecting on id = " << id << " ... " << std::flush;);
|
|
|
|
return runSimpleSelectQuery(query);
|
|
}
|
|
|
|
const DatabaseResult Database::selectOnlyByLoc(const std::string & loc,
|
|
const std::string & classname)
|
|
{
|
|
TableDict::const_iterator I = entityTables.find(classname);
|
|
if (I == entityTables.end()) {
|
|
log(ERROR, "Attempt to select from entity table not registered.");
|
|
return DatabaseResult(0);
|
|
}
|
|
|
|
std::string query = "SELECT * FROM ONLY ";
|
|
query += classname;
|
|
query += "_ent WHERE loc=";
|
|
query += loc;
|
|
query += ";";
|
|
|
|
return runSimpleSelectQuery(query);
|
|
}
|
|
|
|
const DatabaseResult Database::selectClassByLoc(const std::string & loc)
|
|
{
|
|
std::string query = "SELECT id, class FROM entity_ent WHERE loc";
|
|
if (loc.empty()) {
|
|
query += " is null;";
|
|
} else {
|
|
query += "=";
|
|
query += loc;
|
|
query += ";";
|
|
}
|
|
|
|
debug(std::cout << "Selecting on loc = " << loc << " ... " << std::flush;);
|
|
|
|
return runSimpleSelectQuery(query);
|
|
}
|
|
|
|
const char * DatabaseResult::field(const char * column, int row) const
|
|
{
|
|
int col_num = PQfnumber(m_res, column);
|
|
if (col_num == -1) {
|
|
return "";
|
|
}
|
|
return PQgetvalue(m_res, row, col_num);
|
|
}
|
|
|
|
const char * DatabaseResult::const_iterator::column(const char * column) const
|
|
{
|
|
int col_num = PQfnumber(m_dr.m_res, column);
|
|
if (col_num == -1) {
|
|
return "";
|
|
}
|
|
return PQgetvalue(m_dr.m_res, m_row, col_num);
|
|
}
|