Package org.nuxeo.ecm.platform.preview.work

Class PreviewWork

java.lang.Object

org.nuxeo.ecm.core.work.AbstractWork

org.nuxeo.ecm.platform.preview.work.PreviewWork

All Implemented Interfaces:

Serializable, Work

public class PreviewWork
extends AbstractWork

Generates a document preview on worker node and cache the result in a transient store.

Since:

2021.41

See Also:

• Serialized Form

Nested Class Summary

Nested classes/interfaces inherited from interface org.nuxeo.ecm.core.work.api.Work

Work.Progress, Work.State

Field Summary

Fields

Modifier and Type	Field	Description
protected final boolean	blobPostProcessing
protected final String	documentId
protected final String	sourceId
static final String	STORE_NAME
protected final String	xpath

Fields inherited from class org.nuxeo.ecm.core.work.AbstractWork

callerThread, completionTime, docId, docIds, FAILURE_EXCEPTION, FAILURE_MSG, GLOBAL_DLQ_COUNT_REGISTRY_NAME, id, isTree, loginContext, originatingUsername, progress, RANDOM, repositoryName, schedulePath, schedulingTime, session, startTime, state, status, suspended, suspending, traceContext, WORK_FAILED_EVENT, WORK_INSTANCE

Constructor Summary

Constructors

Constructor	Description
PreviewWork(DocumentModel doc, String xpath, boolean blobPostProcessing)

Method Summary

Modifier and Type	Method	Description
String	getCategory()	Gets the category for this work.
List<Blob>	getPreview(Duration timeout)
protected String	getSourceId(DocumentModel doc)	Returns the identifier of the object to render, could be the main blob or a doc.
protected static TransientStore	getStore()
String	getTitle()	Gets a human-readable name for this work instance.
protected void	inError(String message)
boolean	isIdempotent()	Returns true if a work with a given Work.getId() should always produce the same result.
protected void	submitWork()
void	work()	This method should implement the actual work done by the Work instance.

Methods inherited from class org.nuxeo.ecm.core.work.AbstractWork

appendWorkToDeadLetterQueue, buildWorkFailureEventProps, cleanUp, closeSession, commitOrRollbackTransaction, equals, getCompletionTime, getDocument, getDocuments, getId, getOriginatingUsername, getPartitionKey, getProgress, getRetryCount, getSchedulePath, getSchedulingTime, getSpanFromContext, getStartTime, getStatus, getWorkInstanceState, hashCode, isDocumentTree, isSuspending, isWorkInstanceSuspended, newDocumentLocation, openSystemSession, openUserSession, run, runWorkWithTransaction, setCompletionTime, setDocument, setDocument, setDocuments, setOriginatingUsername, setProgress, setSchedulePath, setStartTime, setStatus, setWorkInstanceState, setWorkInstanceSuspending, startTransaction, suspended, toString, workFailed

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface org.nuxeo.ecm.core.work.api.Work

isCoalescing, isGroupJoin, onGroupJoinCompletion

Field Details

STORE_NAME

public static final String STORE_NAME

See Also:

• Constant Field Values

documentId

protected final String documentId

xpath

protected final String xpath

blobPostProcessing

protected final boolean blobPostProcessing

sourceId

protected final String sourceId

Constructor Details

PreviewWork

public PreviewWork(DocumentModel doc,
 String xpath,
 boolean blobPostProcessing)

Method Details

getCategory

public String getCategory()

Description copied from interface: Work

Gets the category for this work.

Used to choose an execution queue.

Specified by:

getCategory in interface Work

Overrides:

getCategory in class AbstractWork

Returns:

the category, or null for the default

getTitle

public String getTitle()

Description copied from interface: Work

Gets a human-readable name for this work instance.

Returns:

a human-readable name

isIdempotent

public boolean isIdempotent()

Description copied from interface: Work

Returns true if a work with a given Work.getId() should always produce the same result. The WorkManager implementation can safely skip duplicate executions of idempotent work.

getPreview

public List<Blob> getPreview(Duration timeout)
                      throws TimeoutException

Throws:

TimeoutException

work

public void work()

Description copied from interface: Work

This method should implement the actual work done by the Work instance.

It should periodically update its progress through Work.setProgress(org.nuxeo.ecm.core.work.api.Work.Progress).

To allow for suspension by the WorkManager, it should periodically call Work.isSuspending(), and if true call Work.suspended() return early with saved state data.

Clean up can by implemented by Work.cleanUp(boolean, Exception).

Specified by:

work in interface Work

Specified by:

work in class AbstractWork

See Also:

• Work.isSuspending()
• Work.suspended()
• Work.cleanUp(boolean, java.lang.Exception)

inError

protected void inError(String message)

getStore

protected static TransientStore getStore()

getSourceId

protected String getSourceId(DocumentModel doc)

Returns the identifier of the object to render, could be the main blob or a doc.

submitWork

protected void submitWork()