001    package org.apache.maven.model.profile;
002    
003    /*
004     * Licensed to the Apache Software Foundation (ASF) under one
005     * or more contributor license agreements.  See the NOTICE file
006     * distributed with this work for additional information
007     * regarding copyright ownership.  The ASF licenses this file
008     * to you under the Apache License, Version 2.0 (the
009     * "License"); you may not use this file except in compliance
010     * with the License.  You may obtain a copy of the License at
011     *
012     *   http://www.apache.org/licenses/LICENSE-2.0
013     *
014     * Unless required by applicable law or agreed to in writing,
015     * software distributed under the License is distributed on an
016     * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
017     * KIND, either express or implied.  See the License for the
018     * specific language governing permissions and limitations
019     * under the License.
020     */
021    
022    import java.util.ArrayList;
023    import java.util.Collection;
024    import java.util.HashSet;
025    import java.util.List;
026    
027    import org.apache.maven.model.Activation;
028    import org.apache.maven.model.Profile;
029    import org.apache.maven.model.building.ModelProblemCollector;
030    import org.apache.maven.model.building.ModelProblem.Severity;
031    import org.apache.maven.model.profile.activation.ProfileActivator;
032    import org.codehaus.plexus.component.annotations.Component;
033    import org.codehaus.plexus.component.annotations.Requirement;
034    
035    /**
036     * Calculates the active profiles among a given collection of profiles.
037     * 
038     * @author Benjamin Bentmann
039     */
040    @Component( role = ProfileSelector.class )
041    public class DefaultProfileSelector
042        implements ProfileSelector
043    {
044    
045        @Requirement( role = ProfileActivator.class )
046        private List<ProfileActivator> activators = new ArrayList<ProfileActivator>();
047    
048        public DefaultProfileSelector addProfileActivator( ProfileActivator profileActivator )
049        {
050            if ( profileActivator != null )
051            {
052                activators.add( profileActivator );
053            }
054            return this;
055        }
056    
057        public List<Profile> getActiveProfiles( Collection<Profile> profiles, ProfileActivationContext context,
058                                                ModelProblemCollector problems )
059        {
060            Collection<String> activatedIds = new HashSet<String>( context.getActiveProfileIds() );
061            Collection<String> deactivatedIds = new HashSet<String>( context.getInactiveProfileIds() );
062    
063            List<Profile> activeProfiles = new ArrayList<Profile>( profiles.size() );
064            List<Profile> activePomProfilesByDefault = new ArrayList<Profile>();
065            boolean activatedPomProfileNotByDefault = false;
066    
067            for ( Profile profile : profiles )
068            {
069                if ( !deactivatedIds.contains( profile.getId() ) )
070                {
071                    if ( activatedIds.contains( profile.getId() ) || isActive( profile, context, problems ) )
072                    {
073                        activeProfiles.add( profile );
074    
075                        if ( Profile.SOURCE_POM.equals( profile.getSource() ) )
076                        {
077                            activatedPomProfileNotByDefault = true;
078                        }
079                    }
080                    else if ( isActiveByDefault( profile ) )
081                    {
082                        if ( Profile.SOURCE_POM.equals( profile.getSource() ) )
083                        {
084                            activePomProfilesByDefault.add( profile );
085                        }
086                        else
087                        {
088                            activeProfiles.add( profile );
089                        }
090                    }
091    
092                }
093            }
094    
095            if ( !activatedPomProfileNotByDefault )
096            {
097                activeProfiles.addAll( activePomProfilesByDefault );
098            }
099    
100            return activeProfiles;
101        }
102    
103        private boolean isActive( Profile profile, ProfileActivationContext context, ModelProblemCollector problems )
104        {
105            for ( ProfileActivator activator : activators )
106            {
107                try
108                {
109                    if ( activator.isActive( profile, context, problems ) )
110                    {
111                        return true;
112                    }
113                }
114                catch ( RuntimeException e )
115                {
116                    problems.add( Severity.ERROR, "Failed to determine activation for profile " + profile.getId(),
117                                  profile.getLocation( "" ), e );
118                    return false;
119                }
120            }
121            return false;
122        }
123    
124        private boolean isActiveByDefault( Profile profile )
125        {
126            Activation activation = profile.getActivation();
127            return activation != null && activation.isActiveByDefault();
128        }
129    
130    }