cvs commit: avalon/repository/test/src/test/org/apache/avalon/repository/main DefaultInitialContextFactoryTestCase.java

[mc...@apache.org]

mcconnell    2004/02/17 03:06:17

  Added:       repository/test/src/test/org/apache/avalon/repository/main
                        DefaultInitialContextFactoryTestCase.java
  Log:
  Add support for an initial context factory that exposes the application root directory. This provides sufficent info for dealing with properties management with an IDE.
  
  Revision  Changes    Path
  1.1                  avalon/repository/test/src/test/org/apache/avalon/repository/main/DefaultInitialContextFactoryTestCase.java
  
  Index: DefaultInitialContextFactoryTestCase.java
  ===================================================================
  
  package org.apache.avalon.repository.main;
  
  import java.util.Properties;
  import java.io.File;
  import java.io.IOException;
  
  import junit.framework.TestCase ;
  
  import org.apache.avalon.repository.provider.InitialContext;
  import org.apache.avalon.repository.provider.InitialContextFactory;
  import org.apache.avalon.util.exception.ExceptionHelper;
  import org.apache.avalon.util.env.Env;
  
  /**
   * DefaultsBuilderTestCase
   * 
   * @author <a href="mailto:mcconnell@apache.org">Stephen McConnell</a>
   * @version $Revision: 1.1 $
   */
  public class DefaultInitialContextFactoryTestCase extends TestCase
  {
      private static final String KEY = "merlin";
  
      private static final File BASEDIR = 
        new File( System.getProperty( "basedir" ) );
  
      public void testInitialContextCreation() throws Exception
      {
          DefaultInitialContextFactory factory = 
            new DefaultInitialContextFactory( KEY, BASEDIR );
  
          //
          // Before creating the intial context we can set the 
          // hosts, cache, parent classloader (and the repoitory
          // implementation artifact but that would be unusual).
          //
          // Before modifying anything lets just check what the 
          // default values are.
          //
  
          System.out.println( "" );
          System.out.println( "InitialContextFactory" );
          System.out.println( "---------------------" );
          System.out.println( "  home: " + factory.getHomeDirectory() );
          System.out.println( "  cache: " + factory.getCacheDirectory() );
          System.out.println( "  work: " + factory.getWorkingDirectory() );
          System.out.println( "  impl: " + factory.getImplementation() );
          String[] hosts = factory.getHosts();
          for( int i=0; i<hosts.length; i++ )
          {
              System.out.println( 
                "  host (" + (i+1) + "): " 
                + hosts[i] );
          }
          System.out.println( "" );
  
          //
          // Normally the default values should be ok and you should 
          // not need to modify anything, however, you have available
          // serveral set methods on the InitialContextFactory interface
          // that allow customization of the factory.  In this example
          // we will override the system cach with the local maven 
          // repository.
          //
  
          File repo = getMavenRepositoryDirectory();
          factory.setCacheDirectory( repo );
  
          // Once customized we can proceed with the instantiation
          // of the initial context. The following method invocation
          // will trigger the population of the system cache with the  
          // resources necesary to load the repository implementation.
          //
  
          InitialContext context = factory.createInitialContext();
  
          //
          // The following code simply prints out the working and cache
          // directory, and the set of initial hosts assigned to the 
          // initial context.
          //
  
          System.out.println( "InitialContext" );
          System.out.println( "--------------" );
          System.out.println( "  work: " + context.getInitialWorkingDirectory() );
          System.out.println( "  cache: " + context.getInitialCacheDirectory() );
          hosts = context.getInitialHosts();
          for( int i=0; i<hosts.length; i++ )
          {
              System.out.println( 
                "  host (" + (i+1) + "): " 
                + hosts[i] );
          }
          System.out.println( "" );
  
          //
          // With the establishment of an initial context we can load any 
          // factory based system (e.g. logging, merlin, etc.).
          //
      }
  
      private static File getMavenRepositoryDirectory()
      {
          return new File( getMavenHomeDirectory(), "repository" );
      }
  
      private static File getMavenHomeDirectory()
      {
          return new File( getMavenHome() );
      }
  
      private static String getMavenHome()
      {
          try
          {
              String local = 
                System.getProperty( 
                  "maven.home.local", 
                  Env.getEnvVariable( "MAVEN_HOME_LOCAL" ) );
              if( null != local ) return local;
  
              return System.getProperty( "user.home" ) + File.separator + ".maven";
  
          }
          catch( IOException e )
          {
              final String error = 
                "Internal error while attempting to access environment.";
              final String message = 
                ExceptionHelper.packException( error, e, true );
              throw new RuntimeException( message );
          }
      }
  
  }
  
  
  

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