Package org.eclipse.osgi.framework.internal.core

Source Code of org.eclipse.osgi.framework.internal.core.ExportedPackageImpl

/*******************************************************************************
* Copyright (c) 2003, 2006 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
*******************************************************************************/
package org.eclipse.osgi.framework.internal.core;

import java.util.ArrayList;
import org.eclipse.osgi.service.resolver.BundleDescription;
import org.eclipse.osgi.service.resolver.ExportPackageDescription;
import org.osgi.framework.*;
import org.osgi.framework.Constants;
import org.osgi.service.packageadmin.ExportedPackage;

public class ExportedPackageImpl implements ExportedPackage {

  String specVersion;
  ExportPackageDescription exportedPackage;
  BundleLoaderProxy supplier;

  public ExportedPackageImpl(ExportPackageDescription exportedPackage, BundleLoaderProxy supplier) {
    this.exportedPackage = exportedPackage;
    this.supplier = supplier;
    Version version = exportedPackage.getVersion();
    if (version != null)
      this.specVersion = version.toString();
  }

  public String getName() {
    return exportedPackage.getName();
  }

  public org.osgi.framework.Bundle getExportingBundle() {
    if (supplier.isStale())
      return null;
    return supplier.getBundleHost();
  }

  public Bundle[] getImportingBundles() {
    if (supplier.isStale())
      return null;
    AbstractBundle bundle = (AbstractBundle) getExportingBundle();
    if (bundle == null)
      return null;
    AbstractBundle[] bundles = bundle.framework.getAllBundles();
    ArrayList importers = new ArrayList(10);
    PackageSource supplierSource = supplier.createPackageSource(exportedPackage, false);
    for (int i = 0; i < bundles.length; i++) {
      if (!(bundles[i] instanceof BundleHost))
        continue;
      BundleLoader loader = ((BundleHost) bundles[i]).getBundleLoader();
      if (loader == null)
        continue;
      PackageSource importerSource = loader.getPackageSource(getName());
      if (supplierSource != null && supplierSource.hasCommonSource(importerSource))
        importers.add(bundles[i]);
    }
    return (Bundle[]) importers.toArray(new Bundle[importers.size()]);
  }

  public String getSpecificationVersion() {
    return specVersion;
  }

  public Version getVersion() {
    return exportedPackage.getVersion();
  }

  public boolean isRemovalPending() {
    BundleDescription exporter = exportedPackage.getExporter();
    if (exporter != null)
      return exporter.isRemovalPending();
    return true;
  }

  public String toString() {
    StringBuffer result = new StringBuffer(getName());
    if (specVersion != null) {
      result.append("; ").append(Constants.VERSION_ATTRIBUTE); //$NON-NLS-1$
      result.append("=\"").append(specVersion).append("\"")//$NON-NLS-1$//$NON-NLS-2$
    }
    return result.toString();
  }
}
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