bundles/org.eclipse.rap.pde.runtime/src/org/eclipse/pde/internal/runtime/MessageHelper.java

/*******************************************************************************
 * Copyright (c) 2013 IBM Corporation and others.
 * All rights reserved. This program and the accompanying materials 
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 * 
 * Contributors:
 *     IBM Corporation                   - initial API and implementation
 *     Arnaud Mergey <a_mergey@yahoo.fr> - RAP port
 *******************************************************************************/
package org.eclipse.pde.internal.runtime;

import org.eclipse.osgi.service.resolver.*;
import org.eclipse.osgi.util.NLS;


public class MessageHelper {

  public static String getResolutionFailureMessage( VersionConstraint unsatisfied ) {
    if( unsatisfied.isResolved() )
      throw new IllegalArgumentException();
    if( unsatisfied instanceof ImportPackageSpecification )
      return NLS.bind( PDERuntimeMessages.get().MessageHelper_missing_imported_package,
                       toString( unsatisfied ) );
    else if( unsatisfied instanceof BundleSpecification ) {
      if( ( ( BundleSpecification )unsatisfied ).isOptional() )
        return NLS.bind( PDERuntimeMessages.get().MessageHelper_missing_optional_required_bundle,
                         toString( unsatisfied ) );
      return NLS.bind( PDERuntimeMessages.get().MessageHelper_missing_required_bundle,
                       toString( unsatisfied ) );
    } else
      return NLS.bind( PDERuntimeMessages.get().MessageHelper_missing_host, toString( unsatisfied ) );
  }

  private static String toString( VersionConstraint constraint ) {
    org.eclipse.osgi.service.resolver.VersionRange versionRange = constraint.getVersionRange();
    if( versionRange == null )
      return constraint.getName();
    return constraint.getName() + '_' + versionRange;
  }
}