maven-model-builder/src/main/java/org/apache/maven/model/building/DefaultTransformerContext.java

package org.apache.maven.model.building;

/*
 * 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.nio.file.Path;
import java.util.HashMap;
import java.util.Map;
import java.util.Objects;

import org.apache.maven.model.Model;

/**
 *
 * @author Robert Scholte
 * @since 4.0.0
 */
class DefaultTransformerContext implements TransformerContext
{
    final Map<String, String> userProperties = new HashMap<>();

    final Map<Path, Model> modelByPath = new HashMap<>();

    final Map<GAKey, Model> modelByGA = new HashMap<>();

    @Override
    public String getUserProperty( String key )
    {
        return userProperties.get( key );
    }

    @Override
    public Model getRawModel( Path p )
    {
        return modelByPath.get( p );
    }

    @Override
    public Model getRawModel( String groupId, String artifactId )
    {
        return modelByGA.get( new GAKey( groupId, artifactId ) );
    }

    static class GAKey
    {
        private final String groupId;
        private final String artifactId;
        private final int hashCode;

        GAKey( String groupId, String artifactId )
        {
            this.groupId = groupId;
            this.artifactId = artifactId;
            this.hashCode = Objects.hash( groupId, artifactId );
        }

        @Override
        public int hashCode()
        {
            return hashCode;
        }

        @Override
        public boolean equals( Object obj )
        {
            if ( this == obj )
            {
                return true;
            }
            if ( !( obj instanceof GAKey ) )
            {
                return false;
            }

            GAKey other = (GAKey) obj;
            return Objects.equals( artifactId, other.artifactId ) && Objects.equals( groupId, other.groupId );
        }
    }
}