Class Job (2.41.0)

public class Job extends JobInfo

A Google BigQuery Job.

Objects of this class are immutable. To get a Job object with the most recent information use #reload. Job adds a layer of service-related functionality over JobInfo.

Inheritance

Object > JobInfo > Job

Inherited Members

JobInfo.<C>getConfiguration()

JobInfo.<S>getStatistics()

JobInfo.equals(Object)

JobInfo.getEtag()

JobInfo.getGeneratedId()

JobInfo.getJobId()

JobInfo.getSelfLink()

JobInfo.getStatus()

JobInfo.getUserEmail()

JobInfo.hashCode()

JobInfo.newBuilder(JobConfiguration)

JobInfo.of(JobConfiguration)

JobInfo.of(JobId,JobConfiguration)

JobInfo.toBuilder()

JobInfo.toString()

Object.clone()

Object.finalize()

Object.getClass()

Object.notify()

Object.notifyAll()

Object.wait()

Object.wait(long)

Object.wait(long,int)

Methods

cancel()

public boolean cancel()

Sends a job cancel request.

Example of cancelling a job.


 if (job.cancel()) {
   return true; // job successfully cancelled
 } else {
   // job not found
 }

Returns
Type	Description
`boolean`	`true` if cancel request was sent successfully, `false` if job was not found

equals(Object obj)

public final boolean equals(Object obj)

Parameter
Name	Description
`obj`	`Object`

Returns
Type	Description
`boolean`

Overrides

JobInfo.equals(Object obj)

exists()

public boolean exists()

Checks if this job exists.

Example of checking that a job exists.


 if (!job.exists()) {
   // job doesn't exist
 }

Returns
Type	Description
`boolean`	`true` if this job exists, `false` otherwise

getBigQuery()

public BigQuery getBigQuery()

Returns the job's BigQuery object used to issue requests.

Returns
Type	Description
`BigQuery`

getQueryResults(BigQuery.QueryResultsOption[] options)

public TableResult getQueryResults(BigQuery.QueryResultsOption[] options)

Gets the query results of this job. This job must be of type JobConfiguration.Type.QUERY, otherwise this method will throw UnsupportedOperationException.

If the job hasn't finished, this method waits for the job to complete. However, the state of the current Job instance is not updated. To get the new state, call #waitFor(RetryOption...) or #reload(JobOption...).

Parameter
Name	Description
`options`	`QueryResultsOption[]`

Returns
Type	Description
`TableResult`

Exceptions
Type	Description
`InterruptedException`	upon failure
`JobException`	upon failure

hashCode()

public final int hashCode()

Returns
Type	Description
`int`

Overrides

JobInfo.hashCode()

isDone()

public boolean isDone()

Checks if this job has completed its execution, either failing or succeeding. If the job does not exist this method returns true.

Example of waiting for a job until it reports that it is done.


 while (!job.isDone()) {
   Thread.sleep(1000L);
 }

Returns
Type	Description
`boolean`	`true` if this job is in JobStatus.State#DONE state or if it does not exist, `false` if the state is not JobStatus.State#DONE

reload(BigQuery.JobOption[] options)

public Job reload(BigQuery.JobOption[] options)

Fetches current job's latest information. Returns null if the job does not exist.

Example of reloading all fields until job status is DONE.


 while (!JobStatus.State.DONE.equals(job.getStatus().getState())) {
   Thread.sleep(1000L);
   job = job.reload();
 }

Example of reloading status field until job status is DONE.


 while (!JobStatus.State.DONE.equals(job.getStatus().getState())) {
   Thread.sleep(1000L);
   job = job.reload(BigQuery.JobOption.fields(BigQuery.JobField.STATUS));
 }

Parameter
Name	Description
`options`	`JobOption[]` job options

Returns
Type	Description
`Job`	a `Job` object with latest information or `null` if not found

toBuilder()

public Job.Builder toBuilder()

Returns a builder for the job object.

Returns
Type	Description
`Job.Builder`

Overrides

JobInfo.toBuilder()

waitFor(RetryOption[] waitOptions)

public Job waitFor(RetryOption[] waitOptions)

Blocks until this job completes its execution, either failing or succeeding. This method returns current job's latest information. If the job no longer exists, this method returns null. By default, the job status is checked using jittered exponential backoff with 1 second as an initial delay, 2.0 as a backoff factor, 1 minute as maximum delay between polls, 12 hours as a total timeout and unlimited number of attempts.

Example usage of waitFor().


 Job completedJob = job.waitFor();
 if (completedJob == null) {
   // job no longer exists
 } else if (completedJob.getStatus().getError() != null) {
   // job failed, handle error
 } else {
   // job completed successfully
 }

Example usage of waitFor() with checking period and timeout.


 Job completedJob =
     job.waitFor(
         RetryOption.initialRetryDelay(Duration.ofSeconds(1)),
         RetryOption.totalTimeout(Duration.ofMinutes(1)));
 if (completedJob == null) {
   // job no longer exists
 } else if (completedJob.getStatus().getError() != null) {
   // job failed, handle error
 } else {
   // job completed successfully
 }

Parameter
Name	Description
`waitOptions`	`com.google.cloud.RetryOption[]` options to configure checking period and timeout

Returns
Type	Description
`Job`

Exceptions
Type	Description
`InterruptedException`	upon failure, check BigQueryException#getCause() for details