org.apache.archiva.metadata.repository
Class DefaultMetadataResolver

java.lang.Object
  org.apache.archiva.metadata.repository.DefaultMetadataResolver

All Implemented Interfaces:

MetadataResolver

@Service(value="metadataResolver#default")
public class DefaultMetadataResolver
extends Object
implements MetadataResolver

Default implementation of the metadata resolver API. At present it will handle updating the content repository from new or changed information in the model and artifacts from the repository storage.

This is a singleton component to allow an alternate implementation to be provided. It is intended to be the same system-wide for the whole content repository instead of on a per-managed-repository basis. Therefore, the session is passed in as an argument to obtain any necessary resources, rather than the class being instantiated within the session in the context of a single managed repository's resolution needs.

Note that the caller is responsible for the session, such as closing and saving (which is implied by the resolver being obtained from within the session). The RepositorySession.markDirty() method is used as a hint to ensure that the session knows we've made changes at close. We cannot ensure the changes will be persisted if the caller chooses to revert first. This is preferable to storing the metadata immediately - a separate session would require having a bi-directional link with the session factory, and saving the existing session might save other changes unknowingly by the caller.

log

private org.slf4j.Logger log

repositoryStorage

@Inject
@Named(value="repositoryStorage#maven2")
private RepositoryStorage repositoryStorage

FIXME: this needs to be configurable based on storage type - and could also be instantiated per repo. Change to a factory, and perhaps retrieve from the session. We should avoid creating one per request, however.

TODO: Also need to accommodate availability of proxy module ... could be a different type since we need methods to modify the storage metadata, which would also allow more appropriate methods to pass in the already determined repository configuration, for example, instead of the ID

listeners

@Inject
private List<RepositoryListener> listeners

DefaultMetadataResolver

public DefaultMetadataResolver()

resolveProjectVersion

public ProjectVersionMetadata resolveProjectVersion(RepositorySession session,
                                                    String repoId,
                                                    String namespace,
                                                    String projectId,
                                                    String projectVersion)
                                             throws MetadataResolutionException

Specified by:

resolveProjectVersion in interface MetadataResolver

Throws:

MetadataResolutionException

resolveProjectReferences

public Collection<ProjectVersionReference> resolveProjectReferences(RepositorySession session,
                                                                    String repoId,
                                                                    String namespace,
                                                                    String projectId,
                                                                    String projectVersion)
                                                             throws MetadataResolutionException

Description copied from interface: MetadataResolver

Retrieve project references from the metadata repository. Note that this is not built into the content model for a project version as a reference may be present (due to reverse-lookup of dependencies) before the actual project is, and we want to avoid adding a stub model to the content repository.

Specified by:

resolveProjectReferences in interface MetadataResolver

repoId - the repository ID to look within

namespace - the namespace of the project to get references to

projectId - the identifier of the project to get references to

projectVersion - the version of the project to get references to

Returns:

a list of project references

Throws:

MetadataResolutionException

resolveRootNamespaces

public Collection<String> resolveRootNamespaces(RepositorySession session,
                                                String repoId)
                                         throws MetadataResolutionException

Specified by:

resolveRootNamespaces in interface MetadataResolver

Throws:

MetadataResolutionException

resolveNamespaces

public Collection<String> resolveNamespaces(RepositorySession session,
                                            String repoId,
                                            String namespace)
                                     throws MetadataResolutionException

Specified by:

resolveNamespaces in interface MetadataResolver

Throws:

MetadataResolutionException

resolveProjects

public Collection<String> resolveProjects(RepositorySession session,
                                          String repoId,
                                          String namespace)
                                   throws MetadataResolutionException

Specified by:

resolveProjects in interface MetadataResolver

Throws:

MetadataResolutionException

resolveProjectVersions

public Collection<String> resolveProjectVersions(RepositorySession session,
                                                 String repoId,
                                                 String namespace,
                                                 String projectId)
                                          throws MetadataResolutionException

Specified by:

resolveProjectVersions in interface MetadataResolver

Throws:

MetadataResolutionException

resolveArtifacts

public Collection<ArtifactMetadata> resolveArtifacts(RepositorySession session,
                                                     String repoId,
                                                     String namespace,
                                                     String projectId,
                                                     String projectVersion)
                                              throws MetadataResolutionException

Specified by:

resolveArtifacts in interface MetadataResolver

Throws:

MetadataResolutionException

createArtifactIdList

private Collection<String> createArtifactIdList(Collection<ArtifactMetadata> artifacts)