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package org.apache.maven.plugin;
/*
* 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.apache.maven.model.Dependency;
import org.apache.maven.model.Exclusion;
import org.apache.maven.model.Plugin;
import org.eclipse.aether.RepositorySystemSession;
import org.eclipse.aether.repository.RemoteRepository;
import org.eclipse.aether.repository.RepositoryPolicy;
import org.eclipse.aether.repository.WorkspaceReader;
import org.eclipse.aether.repository.WorkspaceRepository;
/**
* @author Benjamin Bentmann
*/
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 int pluginHashCode( Plugin plugin )
{
int hash = 17;
hash = hash * 31 + hash( plugin.getGroupId() );
hash = hash * 31 + hash( plugin.getArtifactId() );
hash = hash * 31 + hash( plugin.getVersion() );
hash = hash * 31 + ( plugin.isExtensions() ? 1 : 0 );
for ( Dependency dependency : plugin.getDependencies() )
{
hash = hash * 31 + hash( dependency.getGroupId() );
hash = hash * 31 + hash( dependency.getArtifactId() );
hash = hash * 31 + hash( dependency.getVersion() );
hash = hash * 31 + hash( dependency.getType() );
hash = hash * 31 + hash( dependency.getClassifier() );
hash = hash * 31 + hash( dependency.getScope() );
for ( Exclusion exclusion : dependency.getExclusions() )
{
hash = hash * 31 + hash( exclusion.getGroupId() );
hash = hash * 31 + hash( exclusion.getArtifactId() );
}
}
return hash;
}
public static boolean pluginEquals( Plugin a, Plugin b )
{
return eq( a.getArtifactId(), b.getArtifactId() ) //
&& eq( a.getGroupId(), b.getGroupId() ) //
&& eq( a.getVersion(), b.getVersion() ) //
&& a.isExtensions() == b.isExtensions() //
&& dependenciesEquals( a.getDependencies(), b.getDependencies() );
}
private static boolean dependenciesEquals( List<Dependency> a, List<Dependency> b )
{
if ( a.size() != b.size() )
{
return false;
}
Iterator<Dependency> aI = a.iterator();
Iterator<Dependency> bI = b.iterator();
while ( aI.hasNext() )
{
Dependency aD = aI.next();
Dependency bD = bI.next();
boolean r = eq( aD.getGroupId(), bD.getGroupId() ) //
&& eq( aD.getArtifactId(), bD.getArtifactId() ) //
&& eq( aD.getVersion(), bD.getVersion() ) //
&& eq( aD.getType(), bD.getType() ) //
&& eq( aD.getClassifier(), bD.getClassifier() ) //
&& eq( aD.getScope(), bD.getScope() );
r &= exclusionsEquals( aD.getExclusions(), bD.getExclusions() );
if ( !r )
{
return false;
}
}
return true;
}
private static boolean exclusionsEquals( List<Exclusion> a, List<Exclusion> b )
{
if ( a.size() != b.size() )
{
return false;
}
Iterator<Exclusion> aI = a.iterator();
Iterator<Exclusion> bI = b.iterator();
while ( aI.hasNext() )
{
Exclusion aD = aI.next();
Exclusion bD = bI.next();
boolean r = eq( aD.getGroupId(), bD.getGroupId() ) //
&& eq( aD.getArtifactId(), bD.getArtifactId() );
if ( !r )
{
return false;
}
}
return true;
}
public static WorkspaceRepository getWorkspace( RepositorySystemSession session )
{
WorkspaceReader reader = session.getWorkspaceReader();
return ( reader != null ) ? reader.getRepository() : null;
}
}
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