Package com.e1c.g5.v8.dt.snapshot.integration.git

Class TransitionFilteredIntegrationStrategy

java.lang.Object

com.e1c.g5.v8.dt.snapshot.integration.git.TransitionFilteredIntegrationStrategy

All Implemented Interfaces:

IGitIntegrationStrategy

public class TransitionFilteredIntegrationStrategy
extends Object

Implementation of IGitIntegrationStrategy based on branch transition filtering.

A branch transition filter defines a set of branch transitions for which a particular snapshot task is enabled. The strategy permits a snapshot task if all conditions apply:

• The snapshot task is enabled for the given transition.
• (For creation) A snapshot for source branch does not exist.
• (For restoration) A snapshot for target branch exists.
• The task is meaningful, e.g. source and target branches have different heads.
• Repository is in a safe state.
• There are no uncommitted or untracked changes in working tree.

Constructor Summary

Constructors

Constructor	Description
TransitionFilteredIntegrationStrategy(IBranchTransitionFilter branchTransitionFilter, ISnapshotUserApprovalCallback userApprovalCallback)	Constructs a new strategy with the given branch transition filter and user approval callback.

Method Summary

Modifier and Type	Method	Description
boolean	requestUserApproval(SnapshotGitRequest[] requests)	Requests user approval of a snapshot operation consisting of the given requests.
boolean	shallKeepSnapshot(org.eclipse.core.resources.IProject project, org.eclipse.jgit.lib.Repository repo, org.eclipse.jgit.lib.ObjectId revision)	Tests whether a snapshot may be required in future.
boolean	wantCreateSnapshot(IGitBoundProjectStateDelta delta, ISnapshotLocationProvider locationProvider)	Tests whether it is desired to create a snapshot on the given Git-associated project state transition.
boolean	wantRestoreSnapshot(IGitBoundProjectStateDelta delta, ISnapshotLocationProvider locationProvider)	Tests whether it is desired to restore a snapshot on the given Git-associated project state transition.

Methods inherited from class java.lang.Object

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

Constructor Detail

TransitionFilteredIntegrationStrategy

public TransitionFilteredIntegrationStrategy(IBranchTransitionFilter branchTransitionFilter,
                                             ISnapshotUserApprovalCallback userApprovalCallback)

Constructs a new strategy with the given branch transition filter and user approval callback.

Parameters:

branchTransitionFilter - the transition branch filter, cannot be null

userApprovalCallback - the user approval callback, cannot be null

Method Detail

shallKeepSnapshot

public boolean shallKeepSnapshot(org.eclipse.core.resources.IProject project,
                                 org.eclipse.jgit.lib.Repository repo,
                                 org.eclipse.jgit.lib.ObjectId revision)

Description copied from interface: IGitIntegrationStrategy

Tests whether a snapshot may be required in future. The snapshot is referred to by a project and commit.

This method is used for garbage collection purposes and does not affect snapshot creation or restoration.

Parameters:

project - the project, never null

repo - the repository, associated with the project, never null

revision - SHA-1 of the commit, never null

Returns:

true if the snapshot shall be kept, false otherwise

wantCreateSnapshot

public boolean wantCreateSnapshot(IGitBoundProjectStateDelta delta,
                                  ISnapshotLocationProvider locationProvider)

Description copied from interface: IGitIntegrationStrategy

Tests whether it is desired to create a snapshot on the given Git-associated project state transition.

Specified by:

wantCreateSnapshot in interface IGitIntegrationStrategy

Parameters:

delta - the Git-associated project state delta, never null

locationProvider - , the snapshot location provider, never null

Returns:

true if the snapshot creation is desired

wantRestoreSnapshot

public boolean wantRestoreSnapshot(IGitBoundProjectStateDelta delta,
                                   ISnapshotLocationProvider locationProvider)

Description copied from interface: IGitIntegrationStrategy

Tests whether it is desired to restore a snapshot on the given Git-associated project state transition.

Specified by:

wantRestoreSnapshot in interface IGitIntegrationStrategy

Parameters:

delta - the Git-associated project state delta, never null

locationProvider - , the snapshot location provider, never null

Returns:

true if the snapshot restoration is desired

requestUserApproval

public boolean requestUserApproval(SnapshotGitRequest[] requests)

Description copied from interface: IGitIntegrationStrategy

Requests user approval of a snapshot operation consisting of the given requests.

Specified by:

requestUserApproval in interface IGitIntegrationStrategy

Parameters:

requests - the requests, never null

Returns:

true if a user approved the operation, false otherwise