Using Caché with JDBC
Introduction to Caché JDBC
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Caché provides a high-performance type 4 JDBC database driver. The Caché JDBC driver is fully compliant with the JDBC 4.1 API, supporting all required interfaces and adhering to all JDBC 4.1 guidelines and requirements.

The InterSystems Supported Platforms document specifies the current requirements for all Java-based binding applications:
You can use the Caché JDBC driver and SQL when you want to access your Caché data using a relational model. The Java Binding mechanism also uses the JDBC driver. You can mix relational and object-oriented database access to provide maximum flexibility to your application.
Using the JDBC Driver
The Caché JDBC driver is contained in cache-jdbc-2.0.0.jar. See The Caché Java Class Packages for information on using this file.
JavaDoc class documentation for the packages in cache-jdbc-2.0.0.jar is located in <install-dir>\dev\java\doc.
Installation and Configuration
All applications using the Caché Java binding are divided into two parts: a Caché server and a Java client. The Caché server is responsible for database operations as well as the execution of Caché object methods. The Java client is responsible for the execution of all Java code (such as additional business logic or the user interface). When an application runs, the Java client connects to and communicates with a Caché server via a TCP/IP socket. The actual deployment configuration is up to the application developer: the Java client and Caché server may reside on the same physical machine or they may be located on different machines. Only the Caché server machine requires a copy of Caché.
Java Client Requirements
The Caché Java client requires the Java JDK, version 1.7 or higher. Client applications do not require a local copy of Caché.
The InterSystems Supported Platforms document specifies the current requirements for all Java-based binding applications:
The core components of the Java binding are files named cache-jdbc-2.0.0.jar and cache-db-2.0.0.jar, which contain the Java classes that provide the connection and caching mechanisms for communication with the Caché server, JDBC connectivity, and reflection support. Client applications do not require a local copy of Caché, but the cache-jdbc-2.0.0.jar and cache-db-2.0.0.jar files must be on the class path of the application when compiling or using Java proxy classes. See The Caché Java Class Packages for more information on these files.
Caché Server Configuration
Very little configuration is required to use a Java client with a Caché server. The Java sample programs provided with Caché should work with no change following a default Caché installation. This section describes the server settings that are relevant to Java and how to change them.
Every Java client that wishes to connect to a Caché server needs a URL that provides the server IP address, TCP port number, and Caché namespace, plus a username and password.
The Java sample programs use the following connection information:
   String url = "jdbc:Cache://127.0.0.1:1972/SAMPLES";
   String user = "_SYSTEM";
   String password = "SYS";
To run a Java or JDBC client application, make sure that your installation meets the following requirements:
The Caché Java Class Packages
The files containing the Caché Java class packages are located in <install-dir>\Dev\java\lib\<java-release>, where <install-dir> is the root directory of your Caché installation and <java-release> corresponds to the Java JDK you are using. See Caché Installation Directory in the Caché Installation Guide for the location of <install-dir> on your system. For supported Java releases, see “Supported Java Technologies” in InterSystems Supported Platforms.
The Java class packages are contained in the following files:
See the JavaDoc in <install-dir>\dev\java\doc\ for the latest and most complete description of these packages.