Calling a Java Program

You can invoke a job from an external scheduler by calling a Java program from a command line interface or by calling a batch file and passing the required information through command line parameters. To use this method, the following conditions must be met:

Java is installed on your machine.

The class file com.datafoundations.onedata.externalinvocation. ExternalInvocationHandler is in the classpath.

Note: The class file, com.datafoundations.onedata.externalinvocation. ExternalInvocationHandler, is part of the onedata.jar. You can also package this class as a separate utility because this class has no dependency on any OneData base classes or non-standard Java APIs.

The program accepts the following command line parameters.

Required Parameters

appuri	Web application URI that is used to connect to the servlet, for example, http://localhost:8080
repository	Name of a valid repository.
jobtype	Type of the job. Values can be import or export.
jobname	Name of the job. This parameter can be used to retrieve the Job ID from metadata.
userid	User ID to retrieve authorization credentials to access the job tables.
password	Password of the userid provided. If the service layer security is enabled, then the password is required. If OneData has LDAP enabled, use the regular OneData password. If OneData does not have LDAP enabled, use the password in the User Profile screen (Personalize -> User Profile).

Optional Parameters

client	Default value is 1.
project	Default value is 1.
schema	Default value is 1 or 2 based on the job type and licensing.
logfile	Name of the log file in which the OneData writes the job output.

Usage Example

The following sample command calls a Java program.

java
  com.datafoundations.onedata.externalinvocation.ExternalInvocationHandler
  -appuri http://localhost:8080/onedata -repository packaged_dev
  -jobtype export
  -jobname Fabric_DB_Job
  -userid admin
  -client 1
  -project 1 -schema 2
  -logfile c:\temp\log1.txt