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package org.apache.maven.project;
/*
* 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.HashMap;
import java.util.Map;
import org.apache.maven.model.building.ModelCache;
/**
* A simple model cache used to accelerate model building during a reactor build.
*
* @author Benjamin Bentmann
*/
class ReactorModelCache
implements ModelCache
{
private final Map<CacheKey, Object> models = new HashMap<CacheKey, Object>( 256 );
public Object get( String groupId, String artifactId, String version, String tag )
{
return models.get( new CacheKey( groupId, artifactId, version, tag ) );
}
public void put( String groupId, String artifactId, String version, String tag, Object data )
{
models.put( new CacheKey( groupId, artifactId, version, tag ), data );
}
private static final class CacheKey
{
private final String groupId;
private final String artifactId;
private final String version;
private final String tag;
private final int hashCode;
public CacheKey( String groupId, String artifactId, String version, String tag )
{
this.groupId = ( groupId != null ) ? groupId : "";
this.artifactId = ( artifactId != null ) ? artifactId : "";
this.version = ( version != null ) ? version : "";
this.tag = ( tag != null ) ? tag : "";
int hash = 17;
hash = hash * 31 + this.groupId.hashCode();
hash = hash * 31 + this.artifactId.hashCode();
hash = hash * 31 + this.version.hashCode();
hash = hash * 31 + this.tag.hashCode();
hashCode = hash;
}
@Override
public boolean equals( Object obj )
{
if ( this == obj )
{
return true;
}
if ( !( obj instanceof CacheKey ) )
{
return false;
}
CacheKey that = (CacheKey) obj;
return artifactId.equals( that.artifactId ) && groupId.equals( that.groupId )
&& version.equals( that.version ) && tag.equals( that.tag );
}
@Override
public int hashCode()
{
return hashCode;
}
}
}
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