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mysql-connector-cpp | MySQL Connector/C is a MySQL database connector | Database library

 by   mysql C++ Version: Current License: Non-SPDX

 by   mysql C++ Version: Current License: Non-SPDX

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kandi X-RAY | mysql-connector-cpp Summary

mysql-connector-cpp is a C++ library typically used in Database, MariaDB, Chef applications. mysql-connector-cpp has no bugs, it has no vulnerabilities and it has low support. However mysql-connector-cpp has a Non-SPDX License. You can download it from GitHub.
This is a release of MySQL Connector/C++, the C++ interface for communicating with MySQL servers. For detailed information please visit the official MySQL Connector/C++ documentation.
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Quality
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kandi-support Support

  • mysql-connector-cpp has a low active ecosystem.
  • It has 405 star(s) with 178 fork(s). There are 44 watchers for this library.
  • It had no major release in the last 12 months.
  • mysql-connector-cpp has no issues reported. There are no pull requests.
  • It has a neutral sentiment in the developer community.
  • The latest version of mysql-connector-cpp is current.
mysql-connector-cpp Support
Best in #Database
Average in #Database
mysql-connector-cpp Support
Best in #Database
Average in #Database

quality kandi Quality

  • mysql-connector-cpp has 0 bugs and 0 code smells.
mysql-connector-cpp Quality
Best in #Database
Average in #Database
mysql-connector-cpp Quality
Best in #Database
Average in #Database

securitySecurity

  • mysql-connector-cpp has no vulnerabilities reported, and its dependent libraries have no vulnerabilities reported.
  • mysql-connector-cpp code analysis shows 0 unresolved vulnerabilities.
  • There are 0 security hotspots that need review.
mysql-connector-cpp Security
Best in #Database
Average in #Database
mysql-connector-cpp Security
Best in #Database
Average in #Database

license License

  • mysql-connector-cpp has a Non-SPDX License.
  • Non-SPDX licenses can be open source with a non SPDX compliant license, or non open source licenses, and you need to review them closely before use.
mysql-connector-cpp License
Best in #Database
Average in #Database
mysql-connector-cpp License
Best in #Database
Average in #Database

buildReuse

  • mysql-connector-cpp releases are not available. You will need to build from source code and install.
  • Installation instructions, examples and code snippets are available.
  • It has 625 lines of code, 3 functions and 20 files.
  • It has low code complexity. Code complexity directly impacts maintainability of the code.
mysql-connector-cpp Reuse
Best in #Database
Average in #Database
mysql-connector-cpp Reuse
Best in #Database
Average in #Database
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mysql-connector-cpp Key Features

MySQL Connector/C++ is a MySQL database connector for C++. It lets you develop C++ and C applications that connect to MySQL Server.

Sample Code

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#include <iostream>
#include <mysqlx/xdevapi.h>

using ::std::cout;
using ::std::endl;
using namespace ::mysqlx;


int main(int argc, const char* argv[])
try {

  const char   *url = (argc > 1 ? argv[1] : "mysqlx://root@127.0.0.1");

  cout << "Creating session on " << url
       << " ..." << endl;

  Session sess(url);

  cout <<"Session accepted, creating collection..." <<endl;

  Schema sch= sess.getSchema("test");
  Collection coll= sch.createCollection("c1", true);

  cout <<"Inserting documents..." <<endl;

  coll.remove("true").execute();

  {
    DbDoc doc(R"({ "name": "foo", "age": 1 })");

    Result add =
      coll.add(doc)
          .add(R"({ "name": "bar", "age": 2, "toys": [ "car", "ball" ] })")
          .add(R"({ "name": "bar", "age": 2, "toys": [ "car", "ball" ] })")
          .add(R"({
                 "name": "baz",
                  "age": 3,
                 "date": { "day": 20, "month": "Apr" }
              })")
          .add(R"({ "_id": "myuuid-1", "name": "foo", "age": 7 })")
          .execute();

    std::list<string> ids = add.getGeneratedIds();
    for (string id : ids)
      cout <<"- added doc with id: " << id <<endl;
  }

  cout <<"Fetching documents..." <<endl;

  DocResult docs = coll.find("age > 1 and name like 'ba%'").execute();

  int i = 0;
  for (DbDoc doc : docs)
  {
    cout <<"doc#" <<i++ <<": " <<doc <<endl;

    for (Field fld : doc)
    {
      cout << " field `" << fld << "`: " <<doc[fld] << endl;
    }

    string name = doc["name"];
    cout << " name: " << name << endl;

    if (doc.hasField("date") && Value::DOCUMENT == doc.fieldType("date"))
    {
      cout << "- date field" << endl;
      DbDoc date = doc["date"];
      for (Field fld : date)
      {
        cout << "  date `" << fld << "`: " << date[fld] << endl;
      }
      string month = doc["date"]["month"];
      int day = date["day"];
      cout << "  month: " << month << endl;
      cout << "  day: " << day << endl;
    }

    if (doc.hasField("toys") && Value::ARRAY == doc.fieldType("toys"))
    {
      cout << "- toys:" << endl;
      for (auto toy : doc["toys"])
      {
        cout << "  " << toy << endl;
      }
    }

    cout << endl;
  }
  cout <<"Done!" <<endl;
}
catch (const mysqlx::Error &err)
{
  cout <<"ERROR: " <<err <<endl;
  return 1;
}
catch (std::exception &ex)
{
  cout <<"STD EXCEPTION: " <<ex.what() <<endl;
  return 1;
}
catch (const char *ex)
{
  cout <<"EXCEPTION: " <<ex <<endl;
  return 1;
}

C++/Cmake - Unable to compile MySQL Connector

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$ git clone --depth 1 --branch 8.0 https://github.com/mysql/mysql-connector-cpp.git
$ cmake -G "Unix Makefiles" -S mysql-connector-cpp -B mysql-connector-cpp-build -DCMAKE_BUILD_TYPE=Release
$ cmake --build mysql-connector-cpp-build
$ sudo apt install libssl-dev
$ git clone --depth 1 --branch 8.0 https://github.com/mysql/mysql-connector-cpp.git
$ cmake -G "Unix Makefiles" -S mysql-connector-cpp -B mysql-connector-cpp-build -DCMAKE_BUILD_TYPE=Release
$ cmake --build mysql-connector-cpp-build
$ sudo apt install libssl-dev

Resolving Linker error MySQL Connector/C++

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c++ -o test1 -std=c++11 -I /usr/include/mysql-cppconn-8/ testfile.cpp  -lmysqlcppconn8

Community Discussions

Trending Discussions on mysql-connector-cpp
  • error: 'res_ninit' was not declared in this scope; did you mean 'res_init'?
  • C++/Cmake - Unable to compile MySQL Connector
  • Qt5 MySQL driver not loaded - Windows
  • Resolving Linker error MySQL Connector/C++
Trending Discussions on mysql-connector-cpp

QUESTION

error: 'res_ninit' was not declared in this scope; did you mean 'res_init'?

Asked 2021-Oct-07 at 11:00

I am trying to install an application from its source code in the alpine it says there is no res_ninit, res_nsearch and res_nclose but we can see here that do exists in the Linux headers and I have already installed apk add linux-headers, how can I resolve this issue?

make install
Consolidate compiler generated dependencies of target save_linker_opts
[  2%] Built target save_linker_opts
[  2%] Built target build_protobuf
Consolidate compiler generated dependencies of target cdk_foundation
[  3%] Building CXX object cdk/foundation/CMakeFiles/cdk_foundation.dir/socket_detail.cc.o
/dep/mysql-connector-cpp/cdk/foundation/socket_detail.cc: In function 'std::forward_list<cdk::foundation::connection::detail::Srv_host_detail> cdk::foundation::connection::detail::srv_list(const string&)':
/dep/mysql-connector-cpp/cdk/foundation/socket_detail.cc:1097:3: error: 'res_ninit' was not declared in this scope; did you mean 'res_init'?
 1097 |   res_ninit(&state);
      |   ^~~~~~~~~
      |   res_init
/dep/mysql-connector-cpp/cdk/foundation/socket_detail.cc:1107:13: error: 'res_nsearch' was not declared in this scope; did you mean 'res_search'?
 1107 |   int res = res_nsearch(&state, hostname.c_str(), ns_c_in, ns_t_srv, query_buffer, sizeof (query_buffer) );
      |             ^~~~~~~~~~~
      |             res_search
/dep/mysql-connector-cpp/cdk/foundation/socket_detail.cc:1143:3: error: 'res_nclose' was not declared in this scope
 1143 |   res_nclose(&state);
      |   ^~~~~~~~~~
make[2]: *** [cdk/foundation/CMakeFiles/cdk_foundation.dir/build.make:146: cdk/foundation/CMakeFiles/cdk_foundation.dir/socket_detail.cc.o] Error 1
make[1]: *** [CMakeFiles/Makefile2:1061: cdk/foundation/CMakeFiles/cdk_foundation.dir/all] Error 2

Update: I cat the header file /usr/include/resolv.h and we can see that function does not exists, so the question is how can I set up Linux header like ubuntu that can work in the alpine?

#ifndef _RESOLV_H
#define _RESOLV_H

#include <stdint.h>
#include <arpa/nameser.h>
#include <netinet/in.h>

#ifdef __cplusplus
extern "C" {
#endif

#define MAXNS           3
#define MAXDFLSRCH      3
#define MAXDNSRCH       6
#define LOCALDOMAINPARTS    2

#define RES_TIMEOUT     5
#define MAXRESOLVSORT       10
#define RES_MAXNDOTS        15
#define RES_MAXRETRANS      30
#define RES_MAXRETRY        5
#define RES_DFLRETRY        2
#define RES_MAXTIME     65535

/* unused; purely for broken apps */
typedef struct __res_state {
    int retrans;
    int retry;
    unsigned long options;
    int nscount;
    struct sockaddr_in nsaddr_list[MAXNS];
# define nsaddr nsaddr_list[0]
    unsigned short id;
    char *dnsrch[MAXDNSRCH+1];
    char defdname[256];
    unsigned long pfcode;
    unsigned ndots:4;
    unsigned nsort:4;
    unsigned ipv6_unavail:1;
    unsigned unused:23;
    struct {
        struct in_addr addr;
        uint32_t mask;
    } sort_list[MAXRESOLVSORT];
    void *qhook;
    void *rhook;
    int res_h_errno;
    int _vcsock;
    unsigned _flags;
    union {
        char pad[52];
        struct {
            uint16_t        nscount;
            uint16_t        nsmap[MAXNS];
            int         nssocks[MAXNS];
            uint16_t        nscount6;
            uint16_t        nsinit;
            struct sockaddr_in6 *nsaddrs[MAXNS];
            unsigned int        _initstamp[2];
        } _ext;
    } _u;
} *res_state;

#define __RES   19960801

#ifndef _PATH_RESCONF
#define _PATH_RESCONF        "/etc/resolv.conf"
#endif

struct res_sym {
    int number;
    char *name;
    char *humanname;
};

#define RES_F_VC    0x00000001
#define RES_F_CONN  0x00000002
#define RES_F_EDNS0ERR  0x00000004

#define RES_EXHAUSTIVE  0x00000001

#define RES_INIT    0x00000001
#define RES_DEBUG   0x00000002
#define RES_AAONLY  0x00000004
#define RES_USEVC   0x00000008
#define RES_PRIMARY 0x00000010
#define RES_IGNTC   0x00000020
#define RES_RECURSE 0x00000040
#define RES_DEFNAMES    0x00000080
#define RES_STAYOPEN    0x00000100
#define RES_DNSRCH  0x00000200
#define RES_INSECURE1   0x00000400
#define RES_INSECURE2   0x00000800
#define RES_NOALIASES   0x00001000
#define RES_USE_INET6   0x00002000
#define RES_ROTATE  0x00004000
#define RES_NOCHECKNAME 0x00008000
#define RES_KEEPTSIG    0x00010000
#define RES_BLAST   0x00020000
#define RES_USEBSTRING  0x00040000
#define RES_NOIP6DOTINT 0x00080000
#define RES_USE_EDNS0   0x00100000
#define RES_SNGLKUP 0x00200000
#define RES_SNGLKUPREOP 0x00400000
#define RES_USE_DNSSEC  0x00800000

#define RES_DEFAULT (RES_RECURSE|RES_DEFNAMES|RES_DNSRCH|RES_NOIP6DOTINT)

#define RES_PRF_STATS   0x00000001
#define RES_PRF_UPDATE  0x00000002
#define RES_PRF_CLASS   0x00000004
#define RES_PRF_CMD 0x00000008
#define RES_PRF_QUES    0x00000010
#define RES_PRF_ANS 0x00000020
#define RES_PRF_AUTH    0x00000040
#define RES_PRF_ADD 0x00000080
#define RES_PRF_HEAD1   0x00000100
#define RES_PRF_HEAD2   0x00000200
#define RES_PRF_TTLID   0x00000400
#define RES_PRF_HEADX   0x00000800
#define RES_PRF_QUERY   0x00001000
#define RES_PRF_REPLY   0x00002000
#define RES_PRF_INIT    0x00004000

struct __res_state *__res_state(void);
#define _res (*__res_state())

int res_init(void);
int res_query(const char *, int, int, unsigned char *, int);
int res_querydomain(const char *, const char *, int, int, unsigned char *, int);
int res_search(const char *, int, int, unsigned char *, int);
int res_mkquery(int, const char *, int, int, const unsigned char *, int, const unsigned char*, unsigned char *, int);
int res_send(const unsigned char *, int, unsigned char *, int);
int dn_comp(const char *, unsigned char *, int, unsigned char **, unsigned char **);
int dn_expand(const unsigned char *, const unsigned char *, const unsigned char *, char *, int);
int dn_skipname(const unsigned char *, const unsigned char *);

#ifdef __cplusplus
}
#endif

#endif

ANSWER

Answered 2021-Oct-07 at 11:00

in the Linux headers

Linux is generally/colloquially the name of all unix-ish operating systems with a Linux kernel, but specifically, Linux refers to the Linux kernel tiself. The resolve headers are not part of Linux kernel. linux-headers install headers needed to compile Linux kernel modules. It's unrelated.

The mentioned resolver headers are implemented inside glibc GNU C library. Alpine distribution uses musl implementation of C standard library, not glibc.

how can I resolve this issue?

One of:

  • you can implement res_ninit and relevant function that depend on musl and use that implementation when compiling the application
  • patch mysql-connector yourself to be compilable with musl
  • compile/install glibc to your system and compile mysql-connector against it
  • do not use alpine for programs that require glibc and use only glibc-compatibile Linux distribution
  • notify mysql-connector developers about the issue and financially support them so they will fix the issue

Source https://stackoverflow.com/questions/69479642

Community Discussions, Code Snippets contain sources that include Stack Exchange Network

Vulnerabilities

No vulnerabilities reported

Install mysql-connector-cpp

MySQL Connector/C++ can be installed from pre-compiled packages that can be downloaded from the MySQL downloads page. The process of installing of Connector/C++ from a binary distribution is described in MySQL online manuals.

Support

MySQLConnector/C++ API Reference

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