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Libzdb Introduction ------------ Libzdb is a database library with thread-safe connection pooling. The library can connect transparently to multiple database systems. It has zero runtime configuration and connection is specified via a URL scheme. System requirements ------------------- * Memory and Disk space A minimum of 1 megabytes RAM are required and around 700KB of free disk space. You may need more RAM depending on how many Connections the library should create. * C99 Compiler and Build System You will need a C99 compiler installed to build the library. The GNU C compiler (GCC) from the Free Software Foundation (FSF) is recommended. In addition, your PATH must contain basic build tools such as make and database configuration scripts for MySQL and PostgreSQL, that is, mysql_config and pg_config respectively. * Database systems This Software supports the following database systems, - MySQL - version 4.1 and later - PostgreSQL - version 8.0 and later - SQLite - version 3.0 and later - Oracle - version 10 and later Client libraries for at least one of these database systems must be installed on the host on which this Software will be built. Installation ------------ This library utilize the GNU auto-tools and provided the requirements above are satisfied, building the library is conducted via the standard; ./configure --without-sqlite --enable-openssl=/usr/local/Cellar/[email protected]/1.1.1n make make install Use ./configure --help for build and install options. By default, the library is built with support for MySQL, PostgreSQL and SQLite. You may change this with the --without-<database> options to ./configure. E.g. --without-mysql, --without-postgresql or --without-sqlite. For Oracle, if you have Oracle installed locally, try configure --with-oci=<path> otherwise download Oracle Instant Client library and header files and use --with-oci-lib=<oci>/lib and --with-oci-include=<oci>/include To verify the library and run unit tests, do 'make verify'. You may also want to take a look at test/select.c for an example on how to use the library. Note that unit tests cannot be built if the --enable-protected configure switch was used. This switch is used to package protect non-API objects in the library. It is strongly recommended to build the library with --enable-protected as it will be faster and reduce the risk for name symbol interposing API Documentation ----------------- The directory doc/api-docs/ and index.html contains the full API documentation for the library, generated by Doxygen. Start by reading the documentation for ConnectionPool.h Exceptions handling ------------------- The library implements an elegant solution for thread-safe exceptions handling in C. Use of exceptions frees programmers from the tedious return code idiom for dealing with errors. The API documents every method that can throw an exception. Methods that can throw an exception should be called from inside a try-block. Link and include ---------------- Include this interface in your C code to import the libzdb API; #include <zdb.h> Compile and link a C program with libzdb; gcc -o select select.c -L/<prefix>/lib -lzdb -I/<prefix>/include/zdb Libzdb can be used directly in a C++ or in an Objective-C++ project. Instead of including <zdb.h>, include <zdbpp.h> which is a C++17 wrapper for idiomatic usage of libzdb in your C++ project. Compile and link a C++ program with libzdb; g++ -o select select.cpp -std=c++17 -L/<prefix>/lib -lzdb -I/<prefix>/include/zdb On some systems you may have to explicit set LD_LIBRARY_PATH if libzdb was installed in a non-standard location License Notes ------------- This Software product is licensed under the GNU General Public License version 3. You can use this Software product free of charge to develop, use and distribute Open Source application programs, including reusable components and other software that link with the Software. You may also use and modify any example source code included with the Software for any purpose. See the file COPYING accompanying the Software for details. Reporting a bug --------------- If you believe you have found a bug, please use the issue tracker mentioned at https://www.tildeslash.com/libzdb/#contact to report the problem. Remember to include the necessary information that will enable us to understand and reproduce this problem. Alternatively, you can send us an email at [email protected] Questions and support --------------------- If you have questions or comments about the software or documentation please subscribe to the libzdb general mailing list and post your questions there. https://www.tildeslash.com/mailman/listinfo/libzdb-general Contributing ------------ You are welcome to contribute to this project, but please note that an electronically signed CLA is required to be on file before any Pull Request or patches are accepted or you are given commit rights to the project. To sign, go to https://tildeslash.com/cla/ Contact information ------------------- Libzdb is a product of Tildeslash Ltd. a company registered in Norway and in United Kingdom. For further information about this Software, please use the following contact information. E-mail: [email protected] Internet: https://www.tildeslash.com/libzdb/ Acknowledgments --------------- The design of this library was inspired by principles put forth by David R. Hanson <[email protected]> in his excellent book "C Interfaces and Implementations". You can learn more about this book here https://www.cs.princeton.edu/software/cii/
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