Chapter 14. Runtime Configuration

CloverDX Runtime is one of architectural layers of CloverDX Designer. It takes care of running graphs and subgraphs.

Current state of CloverELT Runtime can be seen in the right bottom corner of the perspective.

The CloverDX Runtime is configured in the Preferences dialog: open WindowPreferences and choose CloverDXCloverDX Runtime.

The CloverDX Runtime Configuration serves to set up:

Temporary Disk Space Settings

The temporary disk space is necessary for debug files. You can store temporary files either into a temporary directory within the workspace directory or into a user-defined directory.

Engine Configuration

Change max record size, etc. See Engine Configuration.

Java Runtime Environment to be Used

You may define an alternative JRE to be used.

Amount of Memory for Java Heap Size

It is important to define some memory size because Java Virtual Machine requires memory to run graphs.

Additional Virtual Machine Parameters

Additional libraries can be added to the classpath.

CloverDX Runtime

Figure 14.1. CloverDX Runtime

To take effect of the changes in runtime configuration, restart of CloverDX Runtime is needed. The runtime menu is accessible in the right bottom corner of CloverDX window.

Accessing CloverDX Runtime menu

Figure 14.2. Accessing CloverDX Runtime menu

Restarting CloverDX Runtime

Figure 14.3. Restarting CloverDX Runtime

Example 14.1. Adding an External Library to Classpath

To add an external library to the CloverDX runtime's classpath, the -Djava.library.path=path/to/library option should be used.

To add libraries located in C:/addressDoctor/lib, type -Djava.library.path=C:\addressDoctor\lib into the VM parameters field.

Adding library to classpath using VM parameters

Figure 14.4. Adding library to classpath using VM parameters

Additional VM Parameter

Server mode (-server)

There are two flavors of JVM: client and server. The client system (default) is optimal for applications which need fast start-up times or small footprints. Switching to server mode is advantageous to long-running applications for which reaching the maximum program execution speed is generally more important than having the fastest possible start-up time. To run the server system, Java Development Kit (JDK) needs to be downloaded.