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The effective model builder, with inheritance, profile activation, interpolation, ...
package org.apache.maven.model.interpolation;
/*
* 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.ArrayList;
import java.util.Arrays;
import java.util.Collection;
import java.util.HashSet;
import java.util.List;
import java.util.Properties;
import javax.inject.Inject;
import org.apache.maven.model.Model;
import org.apache.maven.model.building.ModelBuildingRequest;
import org.apache.maven.model.building.ModelProblemCollector;
import org.apache.maven.model.path.PathTranslator;
import org.apache.maven.model.path.UrlNormalizer;
import org.codehaus.plexus.interpolation.AbstractValueSource;
import org.codehaus.plexus.interpolation.InterpolationPostProcessor;
import org.codehaus.plexus.interpolation.MapBasedValueSource;
import org.codehaus.plexus.interpolation.ObjectBasedValueSource;
import org.codehaus.plexus.interpolation.PrefixAwareRecursionInterceptor;
import org.codehaus.plexus.interpolation.PrefixedObjectValueSource;
import org.codehaus.plexus.interpolation.PrefixedValueSourceWrapper;
import org.codehaus.plexus.interpolation.RecursionInterceptor;
import org.codehaus.plexus.interpolation.ValueSource;
/**
* Use a regular expression search to find and resolve expressions within the POM.
*
* @author jdcasey Created on Feb 3, 2005
*/
public abstract class AbstractStringBasedModelInterpolator
implements ModelInterpolator
{
private static final List PROJECT_PREFIXES = Arrays.asList( "pom.", "project." );
private static final Collection TRANSLATED_PATH_EXPRESSIONS;
static
{
Collection translatedPrefixes = new HashSet<>();
// MNG-1927, MNG-2124, MNG-3355:
// If the build section is present and the project directory is non-null, we should make
// sure interpolation of the directories below uses translated paths.
// Afterward, we'll double back and translate any paths that weren't covered during interpolation via the
// code below...
translatedPrefixes.add( "build.directory" );
translatedPrefixes.add( "build.outputDirectory" );
translatedPrefixes.add( "build.testOutputDirectory" );
translatedPrefixes.add( "build.sourceDirectory" );
translatedPrefixes.add( "build.testSourceDirectory" );
translatedPrefixes.add( "build.scriptSourceDirectory" );
translatedPrefixes.add( "reporting.outputDirectory" );
TRANSLATED_PATH_EXPRESSIONS = translatedPrefixes;
}
@Inject
private PathTranslator pathTranslator;
@Inject
private UrlNormalizer urlNormalizer;
@Inject
private ModelVersionProcessor versionProcessor;
public AbstractStringBasedModelInterpolator setPathTranslator( PathTranslator pathTranslator )
{
this.pathTranslator = pathTranslator;
return this;
}
public AbstractStringBasedModelInterpolator setUrlNormalizer( UrlNormalizer urlNormalizer )
{
this.urlNormalizer = urlNormalizer;
return this;
}
public AbstractStringBasedModelInterpolator setVersionPropertiesProcessor( ModelVersionProcessor processor )
{
this.versionProcessor = processor;
return this;
}
protected List createValueSources( final Model model, final File projectDir,
final ModelBuildingRequest config,
final ModelProblemCollector problems )
{
Properties modelProperties = model.getProperties();
ValueSource modelValueSource1 = new PrefixedObjectValueSource( PROJECT_PREFIXES, model, false );
if ( config.getValidationLevel() >= ModelBuildingRequest.VALIDATION_LEVEL_MAVEN_2_0 )
{
modelValueSource1 = new ProblemDetectingValueSource( modelValueSource1, "pom.", "project.", problems );
}
ValueSource modelValueSource2 = new ObjectBasedValueSource( model );
if ( config.getValidationLevel() >= ModelBuildingRequest.VALIDATION_LEVEL_MAVEN_2_0 )
{
modelValueSource2 = new ProblemDetectingValueSource( modelValueSource2, "", "project.", problems );
}
// NOTE: Order counts here!
List valueSources = new ArrayList<>( 9 );
if ( projectDir != null )
{
ValueSource basedirValueSource = new PrefixedValueSourceWrapper( new AbstractValueSource( false )
{
@Override
public Object getValue( String expression )
{
if ( "basedir".equals( expression ) )
{
return projectDir.getAbsolutePath();
}
return null;
}
}, PROJECT_PREFIXES, true );
valueSources.add( basedirValueSource );
ValueSource baseUriValueSource = new PrefixedValueSourceWrapper( new AbstractValueSource( false )
{
@Override
public Object getValue( String expression )
{
if ( "baseUri".equals( expression ) )
{
return projectDir.getAbsoluteFile().toPath().toUri().toASCIIString();
}
return null;
}
}, PROJECT_PREFIXES, false );
valueSources.add( baseUriValueSource );
valueSources.add( new BuildTimestampValueSource( config.getBuildStartTime(), modelProperties ) );
}
valueSources.add( modelValueSource1 );
valueSources.add( new MapBasedValueSource( config.getUserProperties() ) );
// Overwrite existing values in model properties. Otherwise it's not possible
// to define them via command line e.g.: mvn -Drevision=6.5.7 ...
versionProcessor.overwriteModelProperties( modelProperties, config );
valueSources.add( new MapBasedValueSource( modelProperties ) );
valueSources.add( new MapBasedValueSource( config.getSystemProperties() ) );
valueSources.add( new AbstractValueSource( false )
{
@Override
public Object getValue( String expression )
{
return config.getSystemProperties().getProperty( "env." + expression );
}
} );
valueSources.add( modelValueSource2 );
return valueSources;
}
protected List createPostProcessors( final Model model,
final File projectDir,
final ModelBuildingRequest config )
{
List processors = new ArrayList<>( 2 );
if ( projectDir != null )
{
processors.add( new PathTranslatingPostProcessor( PROJECT_PREFIXES, TRANSLATED_PATH_EXPRESSIONS,
projectDir, pathTranslator ) );
}
processors.add( new UrlNormalizingPostProcessor( urlNormalizer ) );
return processors;
}
protected RecursionInterceptor createRecursionInterceptor()
{
return new PrefixAwareRecursionInterceptor( PROJECT_PREFIXES );
}
}