Clarify SLC project structure.

[gpl/argeo-slc.git] / org.argeo.slc.repo / src / org / eclipse / aether / SyncContext.java

diff --git a/org.argeo.slc.repo/src/org/eclipse/aether/SyncContext.java b/org.argeo.slc.repo/src/org/eclipse/aether/SyncContext.java
deleted file mode 100644 (file)
index a05d512..0000000
--- a/org.argeo.slc.repo/src/org/eclipse/aether/SyncContext.java
+++ /dev/null
@@ -1,67 +0,0 @@
-/*******************************************************************************
- * Copyright (c) 2010, 2011 Sonatype, Inc.
- * All rights reserved. This program and the accompanying materials
- * are made available under the terms of the Eclipse Public License v1.0
- * which accompanies this distribution, and is available at
- * http://www.eclipse.org/legal/epl-v10.html
- *
- * Contributors:
- *    Sonatype, Inc. - initial API and implementation
- *******************************************************************************/
-package org.eclipse.aether;
-
-import java.io.Closeable;
-import java.util.Collection;
-
-import org.eclipse.aether.artifact.Artifact;
-import org.eclipse.aether.metadata.Metadata;
-
-/**
- * A synchronization context used to coordinate concurrent access to artifacts or metadatas. The typical usage of a
- * synchronization context looks like this:
- * 
- * <pre>
- * SyncContext syncContext = repositorySystem.newSyncContext( ... );
- * try {
- *     syncContext.acquire( artifacts, metadatas );
- *     // work with the artifacts and metadatas
- * } finally {
- *     syncContext.close();
- * }
- * </pre>
- * 
- * Within one thread, synchronization contexts may be nested which can naturally happen in a hierarchy of method calls.
- * The nested synchronization contexts may also acquire overlapping sets of artifacts/metadatas as long as the following
- * conditions are met. If the outer-most context holding a particular resource is exclusive, that resource can be
- * reacquired in any nested context. If however the outer-most context is shared, the resource may only be reacquired by
- * nested contexts if these are also shared.
- * <p>
- * A synchronization context is meant to be utilized by only one thread and as such is not thread-safe.
- * <p>
- * Note that the level of actual synchronization is subject to the implementation and might range from OS-wide to none.
- * 
- * @see RepositorySystem#newSyncContext(RepositorySystemSession, boolean)
- */
-public interface SyncContext
-    extends Closeable
-{
-
-    /**
-     * Acquires synchronized access to the specified artifacts and metadatas. The invocation will potentially block
-     * until all requested resources can be acquired by the calling thread. Acquiring resources that are already
-     * acquired by this synchronization context has no effect. Please also see the class-level documentation for
-     * information regarding reentrancy. The method may be invoked multiple times on a synchronization context until all
-     * desired resources have been acquired.
-     * 
-     * @param artifacts The artifacts to acquire, may be {@code null} or empty if none.
-     * @param metadatas The metadatas to acquire, may be {@code null} or empty if none.
-     */
-    void acquire( Collection<? extends Artifact> artifacts, Collection<? extends Metadata> metadatas );
-
-    /**
-     * Releases all previously acquired artifacts/metadatas. If no resources have been acquired before or if this
-     * synchronization context has already been closed, this method does nothing.
-     */
-    void close();
-
-}