public abstract static class ConflictResolver.VersionSelector extends Object
ConflictResolverthat determines the winner among conflicting dependencies. The winning node (and its children) will be retained in the dependency graph, the other nodes will get removed. The version selector does not need to deal with potential scope conflicts, these will be addressed afterwards by the
Note: Implementations must be stateless.
|Constructor and Description|
|Modifier and Type||Method and Description|
Retrieves the version selector for use during the specified graph transformation.
Determines the winning node among conflicting dependencies.
public ConflictResolver.VersionSelector getInstance(DependencyNode root, DependencyGraphTransformationContext context) throws RepositoryException
ConflictResolver.transformGraph(DependencyNode, DependencyGraphTransformationContext)invocation to allow implementations to prepare any auxiliary data that is needed for their operation. Given that implementations must be stateless, a new instance needs to be returned to hold such auxiliary data. The default implementation simply returns the current instance which is appropriate for implementations which do not require auxiliary data.
root- The root node of the (possibly cyclic!) graph to transform, must not be
context- The graph transformation context, must not be
RepositoryException- If the instance could not be retrieved.
public abstract void selectVersion(ConflictResolver.ConflictContext context) throws RepositoryException
ConflictResolver.ConflictItem.getNode()and eventually call
ConflictResolver.ConflictContext.setWinner(ConflictResolver.ConflictItem)to deliver the winner. Failure to select a winner will automatically fail the entire conflict resolution.
context- The conflict context, must not be
RepositoryException- If the version selection failed.
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