org.eclipse.aether.internal.impl.synccontext.named

Class DiscriminatingNameMapper

java.lang.Object

org.eclipse.aether.internal.impl.synccontext.named.DiscriminatingNameMapper

All Implemented Interfaces:

NameMapper

@Singleton
 @Named(value="discriminating")
public class DiscriminatingNameMapper
extends Object
implements NameMapper

Discriminating NameMapper, that wraps another NameMapper and adds a "discriminator" as prefix, that makes lock names unique including the hostname and local repository (by default). The discriminator may be passed in via RepositorySystemSession or is automatically calculated based on the local hostname and repository path. The implementation retains order of collection elements as it got it from NameMapper.nameLocks(RepositorySystemSession, Collection, Collection) method.

The default setup wraps GAVNameMapper, but manually may be created any instance needed.

Field Summary

Fields

Modifier and Type	Field and Description
static String	NAME

Constructor Summary

Constructors

Constructor and Description
DiscriminatingNameMapper(NameMapper nameMapper)

Method Summary

Modifier and Type	Method and Description
Collection<String>	nameLocks(org.eclipse.aether.RepositorySystemSession session, Collection<? extends org.eclipse.aether.artifact.Artifact> artifacts, Collection<? extends org.eclipse.aether.metadata.Metadata> metadatas) Creates (opaque) names for passed in artifacts and metadata.

Methods inherited from class java.lang.Object

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

Field Detail

NAME

public static final String NAME

See Also:

Constant Field Values

Constructor Detail

DiscriminatingNameMapper

@Inject
public DiscriminatingNameMapper(@Named(value="gav")
                                         NameMapper nameMapper)

Method Detail

nameLocks

public Collection<String> nameLocks(org.eclipse.aether.RepositorySystemSession session,
                                    Collection<? extends org.eclipse.aether.artifact.Artifact> artifacts,
                                    Collection<? extends org.eclipse.aether.metadata.Metadata> metadatas)

Description copied from interface: NameMapper

Creates (opaque) names for passed in artifacts and metadata. Returned collection has max size of sum of the passed in artifacts and metadata collections, or less. If an empty collection is returned, there will be no locking happening. Never returns null. The resulting collection MUST BE "stable" (always sorted by same criteria) to avoid deadlocks by acquiring locks in same order, essentially disregarding the order of the input collections.

Specified by:

nameLocks in interface NameMapper