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package org.apache.maven.artifact.resolver.filter;
/*
* 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.Collection;
import java.util.HashSet;
import java.util.Set;
/**
* Filter to only retain objects in the given scope or better. This implementation allows the accumulation of multiple
* scopes and their associated implied scopes, so that the user can filter apply a series of implication rules in a
* single step. This should be a more efficient implementation of multiple standard {@link ScopeArtifactFilter}
* instances ORed together.
*
* @author <a href="mailto:brett@apache.org">Brett Porter</a>
* @author jdcasey
*/
public class CumulativeScopeArtifactFilter
extends AbstractScopeArtifactFilter
{
private Set<String> scopes;
/**
* Create a new filter with the specified scopes and their implied scopes enabled.
*
* @param scopes The scopes to enable, along with all implied scopes, may be {@code null}.
*/
public CumulativeScopeArtifactFilter( Collection<String> scopes )
{
this.scopes = new HashSet<String>();
addScopes( scopes );
}
/**
* Creates a new filter that combines the specified filters.
*
* @param filters The filters to combine, may be {@code null}.
*/
public CumulativeScopeArtifactFilter( CumulativeScopeArtifactFilter... filters )
{
this.scopes = new HashSet<String>();
if ( filters != null )
{
for ( CumulativeScopeArtifactFilter filter : filters )
{
addScopes( filter.getScopes() );
}
}
}
private void addScopes( Collection<String> scopes )
{
if ( scopes != null )
{
for ( String scope : scopes )
{
addScope( scope );
}
}
}
private void addScope( String scope )
{
this.scopes.add( scope );
addScopeInternal( scope );
}
public Set<String> getScopes()
{
return scopes;
}
@Override
public int hashCode()
{
int hash = 17;
hash = hash * 31 + scopes.hashCode();
return hash;
}
@Override
public boolean equals( Object obj )
{
if ( this == obj )
{
return true;
}
if ( !( obj instanceof CumulativeScopeArtifactFilter ) )
{
return false;
}
CumulativeScopeArtifactFilter that = (CumulativeScopeArtifactFilter) obj;
return scopes.equals( that.scopes );
}
}
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