package org.apache.maven.archiva.dependency.graph.tasks;
/*
* 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 org.apache.commons.collections.Predicate;
import org.apache.maven.archiva.dependency.graph.DependencyGraph;
import org.apache.maven.archiva.dependency.graph.DependencyGraphEdge;
import org.apache.maven.archiva.dependency.graph.functors.EdgeFromPredicate;
import org.apache.maven.archiva.dependency.graph.walk.BaseVisitor;
import org.apache.maven.archiva.dependency.graph.walk.DependencyGraphVisitor;
import org.apache.maven.archiva.model.DependencyScope;
import java.util.Stack;
/**
* UpdateScopesVisitor
*
* @version $Id$
*/
public class UpdateScopesVisitor
extends BaseVisitor
implements DependencyGraphVisitor
{
private Stack<String> scopeStack;
private Predicate rootEdgePredicate;
public UpdateScopesVisitor()
{
scopeStack = new Stack<String>();
// Default setting.
scopeStack.add( DependencyScope.COMPILE );
}
public void discoverGraph( DependencyGraph graph )
{
super.discoverGraph( graph );
rootEdgePredicate = new EdgeFromPredicate( graph.getRootNode() );
}
public void discoverEdge( DependencyGraphEdge edge )
{
super.discoverEdge( edge );
String scope = edge.getScope();
if ( !rootEdgePredicate.evaluate( edge ) )
{
// Not a root edge. Set the scope.
scope = (String) scopeStack.peek();
edge.setScope( scope );
}
// Push the scope used onto the stack.
scopeStack.push( scope );
}
public void finishEdge( DependencyGraphEdge edge )
{
super.finishEdge( edge );
scopeStack.pop();
}
}