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authorDan Goodliffe <dan@randomdan.homeip.net>2015-12-24 04:08:56 +0000
committerDan Goodliffe <dan@randomdan.homeip.net>2015-12-24 04:08:56 +0000
commit63d9cbb434ec4f6e828083b99d638127cfce7a95 (patch)
tree2dfcf95372467a9119147265fccfba058c617b8a /libodbcpp/odbc-connection.cpp
parentUse parent glibmm (diff)
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ODBC files prefixed with odbc-
Diffstat (limited to 'libodbcpp/odbc-connection.cpp')
-rw-r--r--libodbcpp/odbc-connection.cpp273
1 files changed, 273 insertions, 0 deletions
diff --git a/libodbcpp/odbc-connection.cpp b/libodbcpp/odbc-connection.cpp
new file mode 100644
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+++ b/libodbcpp/odbc-connection.cpp
@@ -0,0 +1,273 @@
+#include <sqlext.h>
+#include <stdexcept>
+#include <syslog.h>
+#include <stdio.h>
+#include <string.h>
+#include "odbc-connection.h"
+#include "odbc-selectcommand.h"
+#include "odbc-modifycommand.h"
+#include "error.h"
+
+NAMEDFACTORY("odbc", ODBC::Connection, DB::ConnectionFactory);
+
+ODBC::Connection::Connection(const DSN& d) :
+ env(0),
+ conn(0),
+ thinkDelStyle(DB::BulkDeleteUsingUsing),
+ thinkUpdStyle(DB::BulkUpdateUsingFromSrc),
+ txDepth(0),
+ txAborted(false)
+{
+ connectPre();
+ RETCODE dberr = SQLConnect(conn, (SQLCHAR*)d.dsn.c_str(), SQL_NTS,
+ (SQLCHAR*)d.username.c_str(), SQL_NTS, (SQLCHAR*)d.password.c_str(), SQL_NTS);
+ if (!SQL_SUCCEEDED(dberr)) {
+ throw ConnectionError(dberr, SQL_HANDLE_DBC, conn, "Connect");
+ }
+ connectPost();
+}
+
+void
+ODBC::Connection::connectPre()
+{
+ SQLRETURN dberr = SQLAllocHandle(SQL_HANDLE_ENV, SQL_NULL_HANDLE, &env);
+ if (!SQL_SUCCEEDED(dberr)) {
+ throw ConnectionError(dberr, SQL_HANDLE_ENV, env, "Allocate handle");
+ }
+
+ dberr = SQLSetEnvAttr(env, SQL_ATTR_ODBC_VERSION, (void *) SQL_OV_ODBC3, 0);
+ if (!SQL_SUCCEEDED(dberr)) {
+ throw ConnectionError(dberr, SQL_HANDLE_ENV, env, "Set ODBC version");
+ }
+
+ dberr = SQLAllocHandle(SQL_HANDLE_DBC, env, &conn);
+ if (!SQL_SUCCEEDED(dberr)) {
+ throw ConnectionError(dberr, SQL_HANDLE_ENV, env, "Allocate DBC handle");
+ }
+
+ dberr = SQLSetConnectAttr(conn, SQL_LOGIN_TIMEOUT, (SQLPOINTER *)5, 0);
+ if (!SQL_SUCCEEDED(dberr)) {
+ throw ConnectionError(dberr, SQL_HANDLE_ENV, env, "Set connection attributes");
+ }
+}
+
+void
+ODBC::Connection::connectPost()
+{
+ RETCODE dberr = SQLSetConnectOption(conn, SQL_ATTR_AUTOCOMMIT, SQL_AUTOCOMMIT_ON);
+ if (!SQL_SUCCEEDED(dberr)) {
+ throw ConnectionError(dberr, SQL_HANDLE_DBC, conn, "Set default auto commit");
+ }
+ char info[1024];
+ dberr = SQLGetInfo(conn, SQL_DRIVER_NAME, (SQLCHAR*)info, sizeof(info), NULL);
+ if (!SQL_SUCCEEDED(dberr)) {
+ throw ConnectionError(dberr, SQL_HANDLE_DBC, conn, "Get info");
+ }
+ // Apply known DB specific tweaks
+ if (strstr(info, "myodbc") != NULL) {
+ thinkDelStyle = DB::BulkDeleteUsingUsingAlias;
+ thinkUpdStyle = DB::BulkUpdateUsingJoin;
+ }
+}
+
+ODBC::Connection::Connection(const std::string & s) :
+ env(0),
+ conn(0),
+ thinkDelStyle(DB::BulkDeleteUsingUsing),
+ thinkUpdStyle(DB::BulkUpdateUsingFromSrc),
+ txDepth(0),
+ txAborted(false)
+{
+ connectPre();
+ RETCODE dberr = SQLDriverConnect(conn, NULL, (SQLCHAR*)s.c_str(), s.length(), NULL, 0, NULL, SQL_DRIVER_NOPROMPT);
+ if (!SQL_SUCCEEDED(dberr)) {
+ throw ConnectionError(dberr, SQL_HANDLE_DBC, conn, "Connect");
+ }
+ connectPost();
+}
+
+ODBC::Connection::~Connection()
+{
+ if (conn) {
+ if (!SQL_SUCCEEDED(SQLDisconnect(conn))) {
+ syslog(LOG_WARNING, "%s: Disconnect error", __FUNCTION__);
+ }
+ if (!SQL_SUCCEEDED(SQLFreeHandle(SQL_HANDLE_DBC, conn))) {
+ syslog(LOG_WARNING, "%s: Free connection handle error", __FUNCTION__);
+ }
+ }
+ if (env) {
+ if (!SQL_SUCCEEDED(SQLFreeHandle(SQL_HANDLE_ENV, env))) {
+ syslog(LOG_WARNING, "%s: Free connection handle error", __FUNCTION__);
+ }
+ }
+}
+
+void
+ODBC::Connection::finish() const
+{
+ if (txDepth != 0) {
+ rollbackTx();
+ throw Error("Transaction still open");
+ }
+}
+
+int
+ODBC::Connection::beginTx() const
+{
+ if (txDepth == 0) {
+ SQLRETURN dberr = SQLSetConnectOption(conn, SQL_ATTR_AUTOCOMMIT, SQL_AUTOCOMMIT_OFF);
+ if (!SQL_SUCCEEDED(dberr)) {
+ throw Error(dberr, SQL_HANDLE_DBC, conn, "Set default auto commit");
+ }
+ }
+ txDepth += 1;
+ return txDepth;
+}
+
+int
+ODBC::Connection::commitTx() const
+{
+ if (txDepth > 0) {
+ if (txAborted) {
+ return rollbackTx();
+ }
+ txDepth -= 1;
+ if (txDepth == 0) {
+ SQLRETURN dberr = SQLEndTran(SQL_HANDLE_DBC, conn, SQL_COMMIT);
+ if (!SQL_SUCCEEDED(dberr)) {
+ throw Error(dberr, SQL_HANDLE_DBC, conn, "SQLEndTran (SQL_COMMIT)");
+ }
+ dberr = SQLSetConnectOption(conn, SQL_ATTR_AUTOCOMMIT, SQL_AUTOCOMMIT_ON);
+ if (!SQL_SUCCEEDED(dberr)) {
+ throw Error(dberr, SQL_HANDLE_DBC, conn, "Enable auto commit");
+ }
+ txAborted = false;
+ }
+ return txDepth;
+ }
+ throw Error("Attempt to commit none existant transaction");
+}
+
+int
+ODBC::Connection::rollbackTx() const
+{
+ if (txDepth > 0) {
+ txDepth -= 1;
+ if (txDepth == 0) {
+ SQLRETURN dberr = SQLEndTran(SQL_HANDLE_DBC, conn, SQL_ROLLBACK);
+ if (!SQL_SUCCEEDED(dberr)) {
+ throw Error(dberr, SQL_HANDLE_DBC, conn, "SQLEndTran (SQL_ROLLBACK)");
+ }
+ dberr = SQLSetConnectOption(conn, SQL_ATTR_AUTOCOMMIT, SQL_AUTOCOMMIT_ON);
+ if (!SQL_SUCCEEDED(dberr)) {
+ throw Error(dberr, SQL_HANDLE_DBC, conn, "Enable auto commit");
+ }
+ txAborted = false;
+ }
+ return txDepth;
+ }
+ throw Error("Attempt to rollback none existant transaction");
+}
+
+void
+ODBC::Connection::abortTx() const
+{
+ txAborted = true;
+}
+
+bool
+ODBC::Connection::txIsAborted() const
+{
+ return txAborted;
+}
+
+bool
+ODBC::Connection::inTx() const
+{
+ return (txDepth > 0);
+}
+
+DB::BulkDeleteStyle
+ODBC::Connection::bulkDeleteStyle() const
+{
+ return thinkDelStyle;
+}
+
+DB::BulkUpdateStyle
+ODBC::Connection::bulkUpdateStyle() const
+{
+ return thinkUpdStyle;
+}
+
+DB::SelectCommand *
+ODBC::Connection::newSelectCommand(const std::string & sql) const
+{
+ return new ODBC::SelectCommand(*this, sql);
+}
+
+DB::ModifyCommand *
+ODBC::Connection::newModifyCommand(const std::string & sql) const
+{
+ return new ODBC::ModifyCommand(*this, sql);
+}
+
+std::string
+ODBC::Connection::getAttrStr(SQLINTEGER attr) const
+{
+ std::string rtn;
+ rtn.resize(BUFSIZ);
+ SQLINTEGER size = 0;
+ SQLINTEGER dberr = SQLGetConnectAttr(conn, attr, (unsigned char *)rtn.c_str(), BUFSIZ, &size);
+ if (!SQL_SUCCEEDED(dberr)) {
+ throw ODBC::Error(dberr, SQL_HANDLE_DBC, conn, "ODBC::Connection::getAttrStr SQLGetConnectAttr");
+ }
+ rtn.resize(size);
+ return rtn;
+}
+
+SQLINTEGER
+ODBC::Connection::getAttrInt(SQLINTEGER attr) const
+{
+ SQLINTEGER result;
+ SQLINTEGER dberr = SQLGetConnectAttr(conn, attr, &result, sizeof(result), 0);
+ if (!SQL_SUCCEEDED(dberr)) {
+ throw ODBC::Error(dberr, SQL_HANDLE_DBC, conn, "ODBC::Connection::getAttrInt SQLGetConnectAttr");
+ }
+ return result;
+}
+
+void
+ODBC::Connection::ping() const
+{
+ SQLINTEGER dead = getAttrInt(SQL_ATTR_CONNECTION_DEAD);
+ if (dead != SQL_CD_FALSE) {
+ throw ODBC::Error("Connection is dead");
+ }
+}
+
+ODBC::ConnectionError::ConnectionError(RETCODE err, SQLSMALLINT handletype, SQLHANDLE handle, char const * stage) :
+ ODBC::Error(err, handletype, handle, stage),
+ DB::ConnectionError()
+{
+}
+
+ODBC::ConnectionError::ConnectionError(const ConnectionError & e) :
+ ODBC::Error(strdup(e.what())),
+ DB::ConnectionError(e.FailureTime)
+{
+}
+
+void ODBC::Connection::beginBulkUpload(const char *, const char *) const
+{
+ throw std::runtime_error("Not implemented");
+}
+void ODBC::Connection::endBulkUpload(const char *) const
+{
+ throw std::runtime_error("Not implemented");
+}
+size_t ODBC::Connection::bulkUploadData(const char *, size_t) const
+{
+ throw std::runtime_error("Not implemented");
+}
+