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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.util.List;
import org.apache.maven.model.building.ModelProblemCollector;
import org.apache.maven.model.building.ModelProblem.Severity;
import org.apache.maven.model.building.ModelProblem.Version;
import org.apache.maven.model.building.ModelProblemCollectorRequest;
import org.codehaus.plexus.interpolation.ValueSource;
/**
* Wraps another value source and intercepts interpolated expressions, checking for problems.
*
* @author Benjamin Bentmann
*/
class ProblemDetectingValueSource
implements ValueSource
{
private final ValueSource valueSource;
private final String bannedPrefix;
private final String newPrefix;
private final ModelProblemCollector problems;
public ProblemDetectingValueSource( ValueSource valueSource, String bannedPrefix, String newPrefix,
ModelProblemCollector problems )
{
this.valueSource = valueSource;
this.bannedPrefix = bannedPrefix;
this.newPrefix = newPrefix;
this.problems = problems;
}
@Override
public Object getValue( String expression )
{
Object value = valueSource.getValue( expression );
if ( value != null && expression.startsWith( bannedPrefix ) )
{
String msg = "The expression ${" + expression + "} is deprecated.";
if ( newPrefix != null && newPrefix.length() > 0 )
{
msg += " Please use ${" + newPrefix + expression.substring( bannedPrefix.length() ) + "} instead.";
}
problems.add( new ModelProblemCollectorRequest( Severity.WARNING, Version.V20 ).setMessage( msg ) );
}
return value;
}
@Override
@SuppressWarnings( "unchecked" )
public List getFeedback()
{
return valueSource.getFeedback();
}
@Override
public void clearFeedback()
{
valueSource.clearFeedback();
}
}
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