forked from apache/maven-enforcer
/
DefaultEnforcementRuleHelper.java
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/
DefaultEnforcementRuleHelper.java
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package org.apache.maven.plugins.enforcer;
/*
* 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.io.File;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.function.Supplier;
import org.apache.maven.enforcer.rule.api.EnforcerRuleHelper;
import org.apache.maven.execution.MavenSession;
import org.apache.maven.plugin.logging.Log;
import org.codehaus.plexus.PlexusContainer;
import org.codehaus.plexus.component.configurator.expression.ExpressionEvaluationException;
import org.codehaus.plexus.component.configurator.expression.ExpressionEvaluator;
import org.codehaus.plexus.component.repository.exception.ComponentLookupException;
/**
* Default implementation of the EnforcementRuleHelper interface. This is used to help retrieve information from the
* session and provide useful elements like the log.
*
* @author <a href="mailto:brianf@apache.org">Brian Fox</a>
*/
public class DefaultEnforcementRuleHelper
implements EnforcerRuleHelper
{
/** The log. */
private Log log;
/** The evaluator. */
private ExpressionEvaluator evaluator;
/** The container. */
private PlexusContainer container;
/** A cache. */
private Map<String, Object> cache;
/**
* Instantiates a new default enforcement rule helper.
*
* @param session the session
* @param evaluator the evaluator
* @param log the log
* @param container the container
*/
public DefaultEnforcementRuleHelper( MavenSession session, ExpressionEvaluator evaluator, Log log,
PlexusContainer container )
{
this.evaluator = evaluator;
this.log = log;
if ( container != null )
{
this.container = container;
}
else
{
this.container = session.getContainer();
}
this.cache = new HashMap<>();
}
@Override
public Log getLog()
{
return log;
}
@Override
public File alignToBaseDirectory( File theFile )
{
return evaluator.alignToBaseDirectory( theFile );
}
@Override
public Object evaluate( String theExpression )
throws ExpressionEvaluationException
{
return evaluator.evaluate( theExpression );
}
@Override
public <T> T getComponent( Class<T> clazz )
throws ComponentLookupException
{
return container.lookup( clazz );
}
@Override
public Object getComponent( String theComponentKey )
throws ComponentLookupException
{
return container.lookup( theComponentKey );
}
@Override
public Object getComponent( String theRole, String theRoleHint )
throws ComponentLookupException
{
return container.lookup( theRole, theRoleHint );
}
@Override
public List<Object> getComponentList( String theRole )
throws ComponentLookupException
{
return container.lookupList( theRole );
}
@Override
public Map<String, Object> getComponentMap( String theRole )
throws ComponentLookupException
{
return container.lookupMap( theRole );
}
@Override
public <T> T getComponent( Class<T> clazz, String roleHint )
throws ComponentLookupException
{
return container.lookup( clazz, roleHint );
}
@Override
public PlexusContainer getContainer()
{
return container;
}
@Override
public Object getCache( String key, Supplier<?> producer )
{
return cache.computeIfAbsent( key, ( x ) -> producer.get() );
}
}