maven-resolver/00-keep-deprecated-aether-CacheUtils.patch

diff --git a/maven-resolver-impl/src/main/java/org/eclipse/aether/internal/impl/CacheUtils.java b/maven-resolver-impl/src/main/java/org/eclipse/aether/internal/impl/CacheUtils.java
new file mode 100644
index 0000000..d7e8f01
--- /dev/null
+++ b/maven-resolver-impl/src/main/java/org/eclipse/aether/internal/impl/CacheUtils.java
@@ -0,0 +1,141 @@
+package org.eclipse.aether.internal.impl;
+
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ * 
+ *  http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+import java.util.Iterator;
+import java.util.List;
+
+import org.eclipse.aether.RepositorySystemSession;
+import org.eclipse.aether.repository.ArtifactRepository;
+import org.eclipse.aether.repository.LocalRepository;
+import org.eclipse.aether.repository.RemoteRepository;
+import org.eclipse.aether.repository.RepositoryPolicy;
+import org.eclipse.aether.repository.WorkspaceReader;
+import org.eclipse.aether.repository.WorkspaceRepository;
+
+/**
+ * @deprecated To be deleted without replacement.
+ */
+@Deprecated
+public final class CacheUtils
+{
+
+    public static <T> boolean eq( T s1, T s2 )
+    {
+        return s1 != null ? s1.equals( s2 ) : s2 == null;
+    }
+
+    public static int hash( Object obj )
+    {
+        return obj != null ? obj.hashCode() : 0;
+    }
+
+    public static int repositoriesHashCode( List<RemoteRepository> repositories )
+    {
+        int result = 17;
+        for ( RemoteRepository repository : repositories )
+        {
+            result = 31 * result + repositoryHashCode( repository );
+        }
+        return result;
+    }
+
+    private static int repositoryHashCode( RemoteRepository repository )
+    {
+        int result = 17;
+        result = 31 * result + hash( repository.getUrl() );
+        return result;
+    }
+
+    private static boolean repositoryEquals( RemoteRepository r1, RemoteRepository r2 )
+    {
+        if ( r1 == r2 )
+        {
+            return true;
+        }
+
+        return eq( r1.getId(), r2.getId() ) && eq( r1.getUrl(), r2.getUrl() )
+            && policyEquals( r1.getPolicy( false ), r2.getPolicy( false ) )
+            && policyEquals( r1.getPolicy( true ), r2.getPolicy( true ) );
+    }
+
+    private static boolean policyEquals( RepositoryPolicy p1, RepositoryPolicy p2 )
+    {
+        if ( p1 == p2 )
+        {
+            return true;
+        }
+        // update policy doesn't affect contents
+        return p1.isEnabled() == p2.isEnabled() && eq( p1.getChecksumPolicy(), p2.getChecksumPolicy() );
+    }
+
+    public static boolean repositoriesEquals( List<RemoteRepository> r1, List<RemoteRepository> r2 )
+    {
+        if ( r1.size() != r2.size() )
+        {
+            return false;
+        }
+
+        for ( Iterator<RemoteRepository> it1 = r1.iterator(), it2 = r2.iterator(); it1.hasNext(); )
+        {
+            if ( !repositoryEquals( it1.next(), it2.next() ) )
+            {
+                return false;
+            }
+        }
+
+        return true;
+    }
+
+    public static WorkspaceRepository getWorkspace( RepositorySystemSession session )
+    {
+        WorkspaceReader reader = session.getWorkspaceReader();
+        return ( reader != null ) ? reader.getRepository() : null;
+    }
+
+    public static ArtifactRepository getRepository( RepositorySystemSession session,
+                                                    List<RemoteRepository> repositories, Class<?> repoClass,
+                                                    String repoId )
+    {
+        if ( repoClass != null )
+        {
+            if ( WorkspaceRepository.class.isAssignableFrom( repoClass ) )
+            {
+                return session.getWorkspaceReader().getRepository();
+            }
+            else if ( LocalRepository.class.isAssignableFrom( repoClass ) )
+            {
+                return session.getLocalRepository();
+            }
+            else
+            {
+                for ( RemoteRepository repository : repositories )
+                {
+                    if ( repoId.equals( repository.getId() ) )
+                    {
+                        return repository;
+                    }
+                }
+            }
+        }
+        return null;
+    }
+
+}