JobOperator jobOperator = BatchRuntime.getJobOperator();
Properties props = new Properties();
props.setProperty("parameter1", "value1");
...
long execID = jobOperator.start("simplejob", props);
Java Platform, Enterprise Edition (Java EE) 8 The Java EE Tutorial |
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The JobOperator
interface in the javax.batch.operations
package
enables you to submit jobs to the batch runtime and obtain information
about existing jobs. This interface provides the following
functionality.
Obtain the names of all known jobs.
Start, stop, restart, and abandon jobs.
Obtain job instances and job executions.
The BatchRuntime
class in the javax.batch.runtime
package provides
the getJobOperator
factory method to obtain JobOperator
objects.
The following example code demonstrates how to obtain a JobOperator
object and submit a batch job:
JobOperator jobOperator = BatchRuntime.getJobOperator();
Properties props = new Properties();
props.setProperty("parameter1", "value1");
...
long execID = jobOperator.start("simplejob", props);
The first argument of the JobOperator.start
method is the name of the
job as specified in its job definition file. The second parameter is a
Properties
object that represents the parameters for this job
execution. You can use job parameters to pass to a job information that
is only known at runtime.
The JobExecution
interface in the javax.batch.runtime
package
provides methods to obtain information about submitted jobs. This
interface provides the following functionality.
Obtain the batch and exit status of a job execution.
Obtain the time the execution was started, updated, or ended.
Obtain the job name.
Obtain the execution ID.
The following example code demonstrates how to obtain the batch status of a job using its execution ID:
JobExecution jobExec = jobOperator.getJobExecution(execID);
String status = jobExec.getBatchStatus().toString();
The component from which you invoke the batch runtime depends on the architecture of your particular application. For example, you can invoke the batch runtime from an enterprise bean, a servlet, a managed bean, and so on.
See The webserverlog Example Application and The phonebilling Example Application for details on how to invoke the batch runtime from a managed bean driven by a JavaServer Faces user interface.
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