Facets & Plugins need a way of determining the most current available version of a dependency

Right now, there is no good way of inspecting Dependency repositories for available versions of a given artifact. For example:

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public class DataProcessor
{
@Inject
private HttpClient client;

/**

• @param client the client to set
  */
  void setClient(HttpClient client) { this.client = client; }

public <T> T process(URL url, final ContentHandler<T> handler)
{
HttpGet get = new HttpGet(url.toExternalForm());
try
{
return client.execute(get, new ResponseHandler<T>()
{
@Override
public T handleResponse(HttpResponse response) throws ClientProtocolException, IOException
{
StringBuilder content = new StringBuilder();
BufferedReader in = new BufferedReader(new InputStreamReader(response.getEntity().getContent()));
String line;
while( (line = in.readLine()) != null)

{ content.append(line); }

in.close();
return handler.proces(content.toString());
}
});
}
catch (Exception e)

{ throw new RuntimeException(e); }

}

public interface ContentHandler<T>

{ T proces(String content); }

}

/*

• JBoss, Home of Professional Open Source
• Copyright 2010, Red Hat Middleware LLC, and individual contributors
• by the @authors tag. See the copyright.txt in the distribution for a
• full listing of individual contributors.
  *
• Licensed 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.
  */
  package org.jboss.seam.forge.arquillian.util;

import javax.enterprise.context.Dependent;
import javax.enterprise.inject.Disposes;
import javax.enterprise.inject.Produces;

import org.apache.http.client.HttpClient;
import org.apache.http.impl.client.DefaultHttpClient;

/**

• HttpClientProducer
  *
• @author <a href="mailto:aslak@redhat.com">Aslak Knutsen</a>
• @version $Revision: $
  */
  public class HttpClientProducer
  {
  @Produces @Dependent
  public HttpClient createClient() { return new DefaultHttpClient(); }

public void destroyClient(@Disposes HttpClient client)
{

}
}

/*

• JBoss, Home of Professional Open Source
• Copyright 2010, Red Hat Middleware LLC, and individual contributors
• by the @authors tag. See the copyright.txt in the distribution for a
• full listing of individual contributors.
  *
• Licensed 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.
  */
  package org.jboss.seam.forge.arquillian.util;

import java.net.URL;
import java.util.List;

import javax.enterprise.context.ApplicationScoped;
import javax.enterprise.inject.Produces;
import javax.inject.Inject;

/**

• VersionsProducer
  *
• @author <a href="mailto:aslak@redhat.com">Aslak Knutsen</a>
• @version $Revision: $
  */
  public class VersionsProducer
  {
  @Inject
  private DataProcessor processor;

@Produces @ApplicationScoped
public List<String> fetchVersions() throws Exception

{ return processor.process( new URL("http://repository.jboss.org/nexus/content/groups/public/org/jboss/arquillian/arquillian-api/"), new ExtractVersionNumber()); }

}

/*

• JBoss, Home of Professional Open Source
• Copyright 2010, Red Hat Middleware LLC, and individual contributors
• by the @authors tag. See the copyright.txt in the distribution for a
• full listing of individual contributors.
  *
• Licensed 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.
  */
  package org.jboss.seam.forge.arquillian.util;

import java.util.ArrayList;
import java.util.List;
import java.util.regex.Matcher;
import java.util.regex.Pattern;

/**

• ExtractVersionNumber
  *
• @author <a href="mailto:aslak@redhat.com">Aslak Knutsen</a>
• @version $Revision: $
  */
  public class ExtractVersionNumber implements DataProcessor.ContentHandler<List<String>>
  {
  /* (non-Javadoc)
• @see org.jboss.seam.forge.arquillian.util.DataProcessor.ContentHandler#proces(java.lang.String)
  */
  @Override
  public List<String> proces(String content)
  {
  List<String> versions = new ArrayList<String>();
  try
  {
  Pattern pattern = Pattern.compile("<a\\b[^>]href=\"[^>]>(.*?)/</a>");
  Matcher matcher = pattern.matcher(content);
  int mIdx = 0;
  while (matcher.find())
  Unknown macro: { mIdx++; if(mIdx == 1) { continue; } String rawVersion = matcher.group(1); if(include(rawVersion)) { versions.add(rawVersion); } }

  }
  catch (Exception e)

  { throw new RuntimeException("Could not extract version numbers", e); }

return versions;
}

/**

• @param rawVersion
• @return
  */
  private boolean include(String rawVersion) { return !rawVersion.matches(".*(SP1|SP2|SP3|OSGi).*"); }

  }