Examples of FactoryDescriptor

org.apache.avalon.repository.meta.FactoryDescriptor
A RelationalDescriptor represents a set of metadata describing the structural relationships that an artifact has on other artifacts. @author Stephen McConnell @version $Revision: 1.2 $

Examples of org.apache.avalon.repository.meta.FactoryDescriptor

        // Build the url to access the properties of the implementation artifact
        // which is default mechanism dependent.
        //


        Attributes attributes = loadAttributes( m_cache, m_hosts, implementation );
        FactoryDescriptor descriptor = new FactoryDescriptor( attributes );
        String factory = descriptor.getFactory();
        if( null == factory ) 
        {
            final String error = 
              "Required property 'avalon.artifact.factory' not present in artifact: "
              + implementation + " under the active cache: [" + m_cache + "] using the "
              + "attribute sequence: " + attributes;
            throw new IllegalArgumentException( error );
        }


        //
        // Grab all of the dependents in one hit because this is 
        // the implementation so we can ignore api/spi spread.
        //


        Artifact[] dependencies = descriptor.getDependencies();


        int n = dependencies.length;
        URL[] urls = new URL[ n + 1];
        for( int i=0; i<n; i++ )
        {
            urls[i] = LoaderUtils.getResource( 
              dependencies[i], m_hosts, m_cache, true );
        }


        urls[ n ] = LoaderUtils.getResource( 
            implementation, m_hosts, m_cache, true );


        //
        // create the classloader
        //
        
        ClassLoader classloader = new URLClassLoader( urls, parent );
        Class clazz = loadFactoryClass( classloader, factory );


        //
        // load the actual repository implementation 
        //


        try
        {
            m_delegate = createDelegate( classloader, factory, this );
        }
        catch( Throwable e )
        {
            final String error = 
              "Unable to establish a factory for the supplied artifact:";
            StringBuffer buffer = new StringBuffer( error );
            buffer.append( "\n artifact: " + implementation );
            buffer.append( "\n build: " + descriptor.getBuild() );
            buffer.append( "\n factory: " + descriptor.getFactory() );
            buffer.append( "\n source: " 
              + clazz.getProtectionDomain().getCodeSource().getLocation() );
            buffer.append( "\n cache: " + m_cache );
            throw new RepositoryException( buffer.toString(), e );
        }

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Examples of org.apache.avalon.repository.meta.FactoryDescriptor

          throw new NullPointerException( "parent" );
        if( null == artifact ) 
          throw new NullPointerException( "artifact" );


        Attributes attributes = getAttributes( artifact );
        FactoryDescriptor relational = null;
        try
        {
            relational = new FactoryDescriptor( attributes );
        }
        catch( MetaException me )
        {
            final String error = 
              "Could not create a relational descriptor from the artifact: " 
              + artifact; 
            throw new RepositoryException( error, me ); 
        }
       
        URL[] apis = 
          getURLs( 
            relational.getDependencies( 
              FactoryDescriptor.API_KEY ) );
        ClassLoader api = buildClassLoader( apis, parent );


        URL[] spis = 
          getURLs( 
            relational.getDependencies( 
              FactoryDescriptor.SPI_KEY ) );
        ClassLoader spi = buildClassLoader( spis, api );


        URL[] imps = 
          getURLs( artifact, 
            relational.getDependencies( 
              FactoryDescriptor.IMP_KEY ) );


        return buildClassLoader( imps, spi );
    }

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Examples of org.apache.avalon.repository.meta.FactoryDescriptor

              "Internal error while attempt to construct initial repository.";
            throw new RepositoryException( error, e );           
        }


        Attributes attributes = m_repository.getAttributes( artifact );
        FactoryDescriptor descriptor = new FactoryDescriptor( attributes );
        String classname = descriptor.getFactory();
        if( null == classname ) 
        {
            final String error = 
              "Required property 'avalon.artifact.factory' not present in artifact: ["
              + artifact + "] under the active repository: [" + m_repository + "].";
            throw new IllegalArgumentException( error );
        }


        m_classloader = m_repository.getClassLoader( parent, artifact );
        Class clazz = loadFactoryClass( m_classloader, classname );


        try
        {
            m_delegate = createDelegate( m_classloader, classname, m_context );
        }
        catch( Throwable e )
        {
            final String error = 
              "Unable to establish a factory for the supplied artifact:";
            StringBuffer buffer = new StringBuffer( error );
            buffer.append( "\n artifact: " + artifact );
            buffer.append( "\n build: " + descriptor.getBuild() );
            buffer.append( "\n factory: " + descriptor.getFactory() );
            buffer.append( "\n source: " 
              + clazz.getProtectionDomain().getCodeSource().getLocation() );
            buffer.append( "\n repository: " + m_repository );
            throw new RepositoryException( buffer.toString(), e );
        }

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