org.eclipse.equinox.p2.operations

Class UpdateOperation

java.lang.Object

org.eclipse.equinox.p2.operations.ProfileChangeOperation

org.eclipse.equinox.p2.operations.UpdateOperation

All Implemented Interfaces:

IProfileChangeJob

public class UpdateOperation
extends ProfileChangeOperation

An UpdateOperation describes an operation that updates IInstallableUnits in a profile. The following snippet shows how one might use an UpdateOperation to check for updates to the profile and then install them in the background.

 UpdateOperation op = new UpdateOperation(session);
 IStatus result = op.resolveModal(monitor);
 if (result.isOK()) {
   op.getProvisioningJob(monitor).schedule();
 }
 

The life cycle of an UpdateOperation is different than that of the other operations. Since assembling the list of possible updates may be costly, clients should not have to create a new update operation if the desired updates to be applied need to change. In this case, the client can set a new set of chosen updates on the update operation and resolve again.

 UpdateOperation op = new UpdateOperation(session);
 IStatus result = op.resolveModal(monitor);
 if (result.isOK()) {
   op.getProvisioningJob(monitor).schedule();
 } else if (result.getSeverity() == IStatus.ERROR) {
   Update [] chosenUpdates = letUserPickFrom(op.getPossibleUpdates());
   op.setSelectedUpdates(chosenUpdates);
   IStatus result = op.resolveModal(monitor);
 }
 

Since:

2.0

Field Summary

Fields

Modifier and Type	Field and Description
static int	STATUS_NOTHING_TO_UPDATE A status code used to indicate that there were no updates found when looking for updates.

Constructor Summary

Constructors

Constructor and Description
UpdateOperation(ProvisioningSession session) Create an update operation that will update all of the user-visible installable units in the profile (the profile roots).
UpdateOperation(ProvisioningSession session, java.util.Collection<IInstallableUnit> toBeUpdated) Create an update operation on the specified provisioning session that updates the specified IInstallableUnits.

Method Summary

Modifier and Type	Method and Description
protected void	computeProfileChangeRequest(MultiStatus status, IProgressMonitor monitor) Compute the profile change request for this operation, adding any relevant intermediate status to the supplied status.
Update[]	getPossibleUpdates() Get the list of all possible updates.
protected java.lang.String	getProvisioningJobName() Return an appropriate name for the provisioning job.
protected java.lang.String	getResolveJobName() Return an appropriate name for the resolution job.
Update[]	getSelectedUpdates() Get the updates that have been selected from the set of available updates.
boolean	hasResolved() Return a boolean indicating whether the operation has been resolved.
protected void	prepareToResolve() Perform any processing that must occur just before resolving this operation.
void	setSelectedUpdates(Update[] defaultUpdates) Set the updates that should be selected from the set of available updates.

Methods inherited from class org.eclipse.equinox.p2.operations.ProfileChangeOperation

getProfileChangeRequest, getProfileId, getProvisioningContext, getProvisioningJob, getProvisioningPlan, getResolutionDetails, getResolutionDetails, getResolutionResult, getResolveJob, resolveModal, setProfileId, setProvisioningContext, updateJobProvisioningContexts

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

STATUS_NOTHING_TO_UPDATE

public static final int STATUS_NOTHING_TO_UPDATE

A status code used to indicate that there were no updates found when looking for updates.

See Also:

Constant Field Values

Constructor Detail

UpdateOperation

public UpdateOperation(ProvisioningSession session,
                       java.util.Collection<IInstallableUnit> toBeUpdated)

Create an update operation on the specified provisioning session that updates the specified IInstallableUnits. Unless otherwise specified, the operation will be associated with the currently running profile.

Parameters:

session - the session to use for obtaining provisioning services

toBeUpdated - the IInstallableUnits to be updated.

UpdateOperation

public UpdateOperation(ProvisioningSession session)

Create an update operation that will update all of the user-visible installable units in the profile (the profile roots).

Parameters:

session - the session providing the provisioning services

Method Detail

setSelectedUpdates

public void setSelectedUpdates(Update[] defaultUpdates)

Set the updates that should be selected from the set of available updates. If the selected updates are not specified, then the latest available update for each IInstallableUnit with updates will be chosen.

Parameters:

defaultUpdates - the updates that should be chosen from all of the available updates.

getSelectedUpdates

public Update[] getSelectedUpdates()

Get the updates that have been selected from the set of available updates. If none have been specified by the client, then the latest available update for each IInstallableUnit with updates will be chosen.

Returns:

the updates that should be chosen from all of the available updates

getPossibleUpdates

public Update[] getPossibleUpdates()

Get the list of all possible updates. This list may include multiple versions of updates for the same IInstallableUnit, as well as patches to the IInstallableUnit.

Returns:

an array of all possible updates

computeProfileChangeRequest

protected void computeProfileChangeRequest(MultiStatus status,
                                           IProgressMonitor monitor)

Description copied from class: ProfileChangeOperation

Compute the profile change request for this operation, adding any relevant intermediate status to the supplied status.

Specified by:

computeProfileChangeRequest in class ProfileChangeOperation

Parameters:

status - a multi-status to be used to add relevant status. If a profile change request cannot be computed for any reason, a status should be added to explain the problem.

monitor - the progress monitor to use for computing the profile change request

getProvisioningJobName

protected java.lang.String getProvisioningJobName()

Description copied from class: ProfileChangeOperation

Return an appropriate name for the provisioning job.

Specified by:

getProvisioningJobName in class ProfileChangeOperation

Returns:

the provisioning job name.

getResolveJobName

protected java.lang.String getResolveJobName()

Description copied from class: ProfileChangeOperation

Return an appropriate name for the resolution job.

Specified by:

getResolveJobName in class ProfileChangeOperation

Returns:

the resolution job name.

prepareToResolve

protected void prepareToResolve()

Description copied from class: ProfileChangeOperation

Perform any processing that must occur just before resolving this operation.

Overrides:

prepareToResolve in class ProfileChangeOperation

hasResolved

public boolean hasResolved()

Description copied from class: ProfileChangeOperation

Return a boolean indicating whether the operation has been resolved. This method should be used to determine whether a client can expect to retrieve a profile change request, provisioning plan, or resolution result. It is possible that this method return false while resolution is taking place if it is performed in the background.

Overrides:

hasResolved in class ProfileChangeOperation

Returns:

true if the operation has been resolved, false if it has not resolved.