Package com.e1c.g5.v8.snapshot.participation

Interface ISnapshotParticipant

All Known Implementing Classes:

AbstractSnapshotParticipant, EmptyParticipant, StandardSnapshotParticipant

public interface ISnapshotParticipant

Snapshot participant. Implementations are intended to be used as extensions of com._1c.g5.v8.snapshot.participants extension point.

See Also:

ISnapshotConfigurator

Method Summary

Modifier and Type	Method	Description
void	configure(org.eclipse.core.resources.IProject project, ISnapshotConfigurator configurator)	Requests the participant to configure snapshot.
void	contributeMetadata(org.eclipse.core.resources.IProject project, String entry, DataOutputStream output)	Requests the participant to contribute metadata for the previously configured metadata entry.
int	getFormatVersion()	Gets format version of the snapshot participant.
void	restoreMetadata(org.eclipse.core.resources.IProject project, String entry, DataInputStream input)	Requests the participant to read metadata from snapshot.

Method Detail

configure

void configure(org.eclipse.core.resources.IProject project,
               ISnapshotConfigurator configurator)

Requests the participant to configure snapshot. Called some time before snapshot creation and restoration.

Parameters:

project - the project for which snapshot is going to be created, cannot be null

configurator - the configurator to configure snapshot, cannot be null

contributeMetadata

void contributeMetadata(org.eclipse.core.resources.IProject project,
                        String entry,
                        DataOutputStream output)
                 throws IOException

Requests the participant to contribute metadata for the previously configured metadata entry.

This method is called during snapshot creation once for each metadata entry, which was added by ISnapshotConfigurator.addMetadataEntry(java.lang.String). The order of entries supplied to this method is not specified.

Participants must not call output.close().

Parameters:

project - the project for which snapshot is being created, cannot be null

entry - the metadata entry name, cannot be null

output - the data output stream to write metadata, cannot be null

Throws:

IOException

restoreMetadata

void restoreMetadata(org.eclipse.core.resources.IProject project,
                     String entry,
                     DataInputStream input)
              throws IOException

Requests the participant to read metadata from snapshot.

This method is called during snapshot restoration once for each metadata entry, which was added to the snapshot by the same participant on creation. The order of entries supplied to this method is not specified.

Participants must not call input.close().

Parameters:

project - the project for which snapshot is being restored, cannot be null

entry - the metadata entry name, cannot be null

input - the data input stream to read metadata, cannot be null

Throws:

IOException

getFormatVersion

int getFormatVersion()

Gets format version of the snapshot participant. Whenever the format version of a participant does not match the format version stored in a snapshot for this participant, the snapshot is considered invalid and cannot be restored.

Snapshot participants are encouraged to smoothly migrate their data. The format version must be increased only if migration is impossible or too heavy.

Returns:

the format version of the participant