Systems and methods for implementing a shim database driver
Disclosed are some implementations of systems, apparatus, methods and computer program products for implementing a shim driver configurable to provide a database driver. A shim driver class is loaded from a class path and instantiated such that a shim driver is generated. A directory path and database driver class name are obtained from a configuration file. An application transmits a request for a database driver via an application programming interface (API) of the shim driver, where the request includes the directory path and database driver class name. The shim driver loads a database driver class identified by the database driver class name using the directory path, instantiates the database driver class such that a first database driver is generated, and provides the first database driver responsive to the request.
1. A system comprising:
a database system implemented using a server system, the database system configurable to cause:
obtaining, using a configuration file, a first directory path associated with a first directory and a first identifier associated with a first database driver class, the first directory being a hidden directory;
loading a set of classes via a class path, the set of classes including a shim driver class;
instantiating the shim driver class such that a shim driver object is generated, the shim driver object providing a first application programming interface (API);
transmitting, a first request via the first API, the first request having a first argument including the first directory path and a second argument including the first identifier associated with the first database driver class;
obtaining, via the first API, a first database driver corresponding to the first database driver class responsive to calling the first API, the first database driver configurable to implement a first database protocol in association with a database connection, the first database driver exposing a set of APIs including a second API via which a device can request a database operation on a database compatible with the first database protocol;
storing the first database driver in a memory of the system; and
requesting a first database operation in relation to a first database compatible with the first database protocol via the second API, the first database driver configurable to execute a set of computer-readable instructions of the first database driver responsive to processing the request for the first database operation.
2. The system of claim 1 , the first database driver having a java.sql.Driver interface.
3. The system of claim 1 , the first database driver having a java.sql.Wrapper interface.
4. The system of claim 1 , the database system further configurable to cause:
deleting the first database driver by transmitting a second request via a second API, the second request having an argument including the first database driver.
5. The system of claim 1 , the database system further configurable to cause:
processing a request received from a client device, the request including a uniform resource locator (URL); and
responsive to the request received from the client device, deleting the first database driver by transmitting a second request via a second API, the second request having an argument including the first database driver.
6. The system of claim 1 , the database system further configurable to cause:
generating the first directory path using information obtained from the configuration file.
7. The system of claim 1 , wherein storing the first database driver includes storing class files associated with the first database driver in one or more hidden directories.
8. The system of claim 1 , wherein the first database driver class is an earlier version of the first database driver, enabling the shim driver to perform a rollback to the earlier version of the first database driver.
9. A method, comprising:
processing, by a server, a first request identifying a first directory path and a first identifier associated with a first database driver class, the first directory path being associated with a first directory, the first directory being a hidden directory;
obtaining, by a server, the first database driver class stored in the first directory using the first identifier, the first database driver class being configurable to implement a first database protocol in association with a database connection;
instantiating the first database driver class such that a first database driver corresponding to the first driver class is generated; and
providing the first database driver responsive to the first request, the first database driver exposing a set of APIs including a first API via which a device can request a database operation on a database compatible with the first database protocol.
10. The method of claim 9 , the first database driver having a java.sql.Driver interface.
11. The method of claim 9 , the first database driver having a java.sql.Wrapper interface.
12. The method of claim 9 , further comprising:
loading the first database driver class via a class loader.
13. The method of claim 9 , further comprising:
processing, by a server, a second request received via a second API; and
responsive to processing the second request,
deleting the first database driver class via a class loader; and
deleting the first database driver.
14. The method of claim 13 , the second request including the first database driver.
15. A computer program product comprising computer-readable program code capable of being executed by one or more processors when retrieved from a non-transitory computer-readable medium, the program code comprising computer-readable instructions configurable to cause:
obtaining, using a configuration file, a first directory path associated with a first directory and a first identifier associated with a first database driver class, the first directory being a hidden directory;
loading a set of classes via a class path, the set of classes including a shim driver class;
instantiating the shim driver class such that a shim driver object is generated, the shim driver object providing a first application programming interface (API);
transmitting, a first request via the first API, the first request having a first argument including the first directory path and a second argument including the first identifier associated with the first database driver class;
obtaining, via the first API, a first database driver corresponding to the first database driver class responsive to calling the first API, the first database driver configurable to implement a first database protocol in association with a database connection, the first database driver exposing a set of APIs including a second API via which a device can request a database operation on a database compatible with the first database protocol;
storing the first database driver; and
requesting a first database operation in relation to a first database compatible with the first database protocol via the second API, the first database driver configurable to execute a set of computer-readable instructions of the first database driver responsive to processing the request for the first database operation.
16. The computer program product of claim 15 , the first database driver having a java.sql.Driver interface.
17. The computer program product of claim 15 , the first database driver having a java.sql.Wrapper interface.
18. The computer program product of claim 15 , the program code comprising computer-readable instructions further configurable to cause:
deleting the first database driver by transmitting a second request via a second API, the second request having an argument including the first database driver.
19. The computer program product of claim 15 , the program code comprising computer-readable instructions further configurable to cause:
processing a request received from a client device, the request including a uniform resource locator (URL); and
responsive to the request received from the client device, deleting the first database driver by transmitting a second request via a second API, the second request having an argument including the first database driver.
20. The computer program product of claim 15 , the program code comprising computer-readable instructions further configurable to cause:
generating the first directory path using information obtained from the configuration file.