update/org.eclipse.update.core/src/org/eclipse/update/core/Feature.java - platform/eclipse.platform - Git at Google

 package org.eclipse.update.core;
 /*
  * (c) Copyright IBM Corp. 2000, 2002.
  * All Rights Reserved.
  */
 import java.net.URL;

 import org.eclipse.core.runtime.*;
 import org.eclipse.update.core.model.*;
 import org.eclipse.update.internal.core.*;
 import org.eclipse.update.internal.core.Policy;
 /**
  * Abstract Class that implements most of the behavior of a feature
  * A feature ALWAYS belongs to an ISite
  */
 public class Feature extends FeatureModel implements IFeature {

 	/**
 	 *
 	 */
 	public static final String FEATURE_FILE = "feature"; //$NON-NLS-1$

 	/**
 	 *
 	 */
 	public static final String FEATURE_XML = FEATURE_FILE + ".xml"; //$NON-NLS-1$

 	/**
 	 *
 	 */
 	private static final String EMPTY_STRING = ""; //$NON-NLS-1$

 	/**
 	 * Site in which teh feature resides
 	 */
 	private ISite site;

 	/**
 	 * The content provider of the DefaultFeature
 	 */
 	private IFeatureContentProvider featureContentProvider;

 	/**
 	 * Constructor
 	 */
 	public Feature() {
 	}

 	/**
 	*
 	*/

 	public boolean equals(Object object) {
 		if (!(object instanceof Feature))
 			return false;
 		IFeature f = (IFeature) object;
 		return (super.equals(object) && getURL().equals(f.getURL()));

 	}

 	/*
 	 * @see IFeature#getVersionedIdentifier()
 	 */
 	public VersionedIdentifier getVersionedIdentifier() {
 		return new VersionedIdentifier(getFeatureIdentifier(), getFeatureVersion());
 	}

 	/*
 	 * @see IFeature#getSite()
 	 */
 	public ISite getSite() {
 		return site;
 	}

 	/*
 	 * @see IFeature#getURL()
 	 */
 	public URL getURL() {
 		IFeatureContentProvider contentProvider = null;
 		try {
 			contentProvider = getFeatureContentProvider();
 		} catch (CoreException e) {
 			// no content provider, log status
 			UpdateManagerPlugin.getPlugin().getLog().log(e.getStatus());
 		}
 		return (contentProvider != null) ? contentProvider.getURL() : null;
 	}

 	/*
 	 * @see IFeature#getUpdateSiteEntry()
 	 */
 	public IURLEntry getUpdateSiteEntry() {
 		return (IURLEntry) getUpdateSiteEntryModel();
 	}

 	/*
 	 * @see IFeature#getDiscoverySiteEntries()
 	 */
 	public IURLEntry[] getDiscoverySiteEntries() {
 		URLEntryModel[] result = getDiscoverySiteEntryModels();
 		if (result.length == 0)
 			return new IURLEntry[0];
 		else
 			return (IURLEntry[]) result;
 	}

 	/*
 	 * @see IFeature#getDescription()
 	 */
 	public IURLEntry getDescription() {
 		return (IURLEntry) getDescriptionModel();
 	}

 	/*
 	 * @see IFeature#getCopyright()
 	 */
 	public IURLEntry getCopyright() {
 		return (IURLEntry) getCopyrightModel();
 	}

 	/*
 	 * @see IFeature#getLicense()
 	 */
 	public IURLEntry getLicense() {
 		return (IURLEntry) getLicenseModel();
 	}

 	/*
 	 * @see IFeature#getImage()
 	 */
 	public URL getImage() {
 		return getImageURL();
 	}
 	/**
 	 * Sets the site
 	 * @param site The site to set
 	 */
 	public void setSite(ISite site) throws CoreException {
 		if (this.site != null) {
 			String id = UpdateManagerPlugin.getPlugin().getDescriptor().getUniqueIdentifier();
 			String featureURLString = (getURL() != null) ? getURL().toExternalForm() : EMPTY_STRING;
 			IStatus status = new Status(IStatus.ERROR, id, IStatus.OK, Policy.bind("Feature.SiteAlreadySet", featureURLString), null); //$NON-NLS-1$
 			throw new CoreException(status);
 		}
 		this.site = site;
 	}

 	/**
 	* returns the download size
 	* of the feature to be installed on the site.
 	* If the site is <code>null</code> returns the maximum size
 	*
 	* If one plug-in entry has an unknown size.
 	* then the download size is unknown.
 	*
 	* @see IFeature#getDownloadSize()
 	*
 	*/
 	public long getDownloadSize() {
 		try {
 			return getFeatureContentProvider().getDownloadSizeFor(getPluginEntries(), getNonPluginEntries());
 		} catch (CoreException e) {
 			UpdateManagerPlugin.getPlugin().getLog().log(e.getStatus());
 			return ContentEntryModel.UNKNOWN_SIZE;
 		}

 	}
 	/**
 	 * returns the install size
 	 * of the feature to be installed on the site.
 	 * If the site is <code>null</code> returns the maximum size
 	 *
 	 * If one plug-in entry has an unknown size.
 	 * then the install size is unknown.
 	 *
 	 * @see IFeature#getInstallSize()
 	 */
 	public long getInstallSize() {
 		try {
 			return getFeatureContentProvider().getInstallSizeFor(getPluginEntries(), getNonPluginEntries());
 		} catch (CoreException e) {
 			UpdateManagerPlugin.getPlugin().getLog().log(e.getStatus());
 			return ContentEntryModel.UNKNOWN_SIZE;
 		}

 	}

 	/*
 	 * @see IFeature#install(IFeature,IVerificationListener, IProgressMonitor) throws CoreException
 	 */
 	public IFeatureReference install(IFeature targetFeature, IVerificationListener verificationListener, IProgressMonitor progress) throws CoreException {

 		// make sure we have an InstallMonitor
 		InstallMonitor monitor;
 		if (progress == null)
 			monitor = null;
 		else if (progress instanceof InstallMonitor)
 			monitor = (InstallMonitor) progress;
 		else
 			monitor = new InstallMonitor(progress);

 		// do the install
 		IFeatureContentConsumer consumer = targetFeature.getFeatureContentConsumer();
 		IVerifier verifier = getFeatureContentProvider().getVerifier();

 		try {
 			// determine list of plugins to install
 			// find the intersection between the two arrays of IPluginEntry...
 			// The one the site contains and the one the feature contains
 			IPluginEntry[] sourceFeaturePluginEntries = getPluginEntries();
 			ISite targetSite = targetFeature.getSite();
 			IPluginEntry[] targetSitePluginEntries = (targetSite != null) ? targetSite.getPluginEntries() : new IPluginEntry[0];
 			IPluginEntry[] pluginsToInstall = UpdateManagerUtils.diff(sourceFeaturePluginEntries, targetSitePluginEntries);

 			// determine number of monitor tasks
 				int taskCount = 1 // one task for all feature files (already downloaded)
 		+pluginsToInstall.length // one task for each plugin to install
 	+getNonPluginEntries().length; // one task for each non-plugin file to install

 			if (monitor != null)
 				monitor.beginTask(EMPTY_STRING, taskCount);

 			if (verifier != null) {
 				ContentReference[] references = getFeatureContentProvider().getFeatureEntryArchiveReferences(monitor);
 				promptForVerification(verifier.verify(this, references, monitor),verificationListener);
 			}

 			//finds the contentReferences for this IFeature
 			if (monitor != null)
 				monitor.setTaskName(Policy.bind("Feature.TaskInstallFeatureFiles")); //$NON-NLS-1$
 			ContentReference[] references = getFeatureContentProvider().getFeatureEntryContentReferences(monitor);
 			if (verifier != null)
 				verifier.verify(this, references, monitor);
 			for (int i = 0; i < references.length; i++) {
 				if (monitor != null)
 					monitor.subTask(references[i].getIdentifier());
 				consumer.store(references[i], monitor);
 			}
 			if (monitor != null)
 				monitor.worked(1);

 			// download and install plugin plugin files
 			for (int i = 0; i < pluginsToInstall.length; i++) {
 				// verification
 				if (verifier != null) {
 					references = getFeatureContentProvider().getPluginEntryArchiveReferences(pluginsToInstall[i], monitor);
 					promptForVerification(verifier.verify(this, references, monitor),verificationListener);
 				}

 			}

 			for (int i = 0; i < pluginsToInstall.length; i++) {
 				if (monitor != null)
 					monitor.setTaskName(Policy.bind("Feature.TaskInstallPluginFiles") + pluginsToInstall[i].getVersionedIdentifier().getIdentifier() + "]: "); //$NON-NLS-1$ //$NON-NLS-2$
 				IContentConsumer pluginConsumer = consumer.open(pluginsToInstall[i]);

 				// installation
 				references = getFeatureContentProvider().getPluginEntryContentReferences(pluginsToInstall[i], monitor);
 				for (int j = 0; j < references.length; j++) {
 					if (monitor != null)
 						monitor.subTask(references[j].getIdentifier());
 						pluginConsumer.store(references[j], monitor);
 				}
 				pluginConsumer.close();
 				if (monitor != null)
 					monitor.worked(1);
 			}

 			// download and install non plugins bundles
 			INonPluginEntry[] nonPluginsContentReferencesToInstall = getNonPluginEntries();
 			for (int i = 0; i < nonPluginsContentReferencesToInstall.length; i++) {
 				if (monitor != null)
 					monitor.setTaskName(Policy.bind("Feature.TaskInstallNonPluginsFiles")); //$NON-NLS-1$
 				IContentConsumer nonPluginConsumer = consumer.open(nonPluginsContentReferencesToInstall[i]);
 				references = getFeatureContentProvider().getNonPluginEntryArchiveReferences(nonPluginsContentReferencesToInstall[i], monitor);
 				if (verifier != null)
 				promptForVerification(verifier.verify(this, references, monitor),verificationListener);
 				for (int j = 0; j < references.length; j++) {
 					if (monitor != null)
 						monitor.subTask(references[j].getIdentifier());
 					nonPluginConsumer.store(references[j], monitor);
 				}
 				nonPluginConsumer.close();
 				if (monitor != null)
 					monitor.worked(1);
 			}
 		} catch (CoreException e) {
 			// an error occured, abort
 			if (consumer != null)
 				consumer.abort();
 			throw e;
 		} finally {
 			if (monitor != null)
 				monitor.done();
 		}

 		return consumer.close();

 	}

 	/*
 	 * @see IPluginContainer#getPluginEntries()
 	 */
 	public IPluginEntry[] getPluginEntries() {
 		PluginEntryModel[] result = getPluginEntryModels();
 		if (result.length == 0)
 			return new IPluginEntry[0];
 		else
 			return (IPluginEntry[]) result;
 	}

 	/*
 	 * @see IFeature#getDataEntries()
 	 */
 	public INonPluginEntry[] getNonPluginEntries() {
 		NonPluginEntryModel[] result = getNonPluginEntryModels();
 		if (result.length == 0)
 			return new INonPluginEntry[0];
 		else
 			return (INonPluginEntry[]) result;
 	}

 	/*
 	 * @see IPluginContainer#getPluginEntryCount()
 	 */
 	public int getPluginEntryCount() {
 		return getPluginEntryModels().length;
 	}

 	/*
 	 * @see IFeature#getNonPluginEntryCount()
 	 */
 	public int getNonPluginEntryCount() {
 		return getNonPluginEntryModels().length;
 	}

 	/*
 	 * @see IFeature#getImports()
 	 */
 	public IImport[] getImports() {
 		ImportModel[] result = getImportModels();
 		if (result.length == 0)
 			return new IImport[0];
 		else
 			return (IImport[]) result;
 	}

 	/*
 	* @see IAdaptable#getAdapter(Class)
 	*/
 	public Object getAdapter(Class adapter) {
 		return null;
 	}

 	/*
 	 * @see IFeature#setFeatureContentProvider(IFeatureContentProvider)
 	 */
 	public void setFeatureContentProvider(IFeatureContentProvider featureContentProvider) {
 		this.featureContentProvider = featureContentProvider;
 		featureContentProvider.setFeature(this);
 	}

 	/*
 	 * @see IFeature#getFeatureContentProvider(IFeatureContentConsumer)
 	 */
 	public IFeatureContentProvider getFeatureContentProvider() throws CoreException {
 		if (featureContentProvider == null) {
 			String id = UpdateManagerPlugin.getPlugin().getDescriptor().getUniqueIdentifier();
 			IStatus status = new Status(IStatus.ERROR, id, IStatus.OK, Policy.bind("Feature.NoContentProvider", getVersionedIdentifier().toString()), null); //$NON-NLS-1$
 			throw new CoreException(status);
 		}
 		return this.featureContentProvider;
 	}

 	/*
 	 * @see IFeature#getContentConsumer()
 	 */
 	public IFeatureContentConsumer getFeatureContentConsumer() throws CoreException {
 		throw new UnsupportedOperationException();
 	}

 	/*
 	 * @see Object#toString()
 	 */
 	public String toString() {
 		String URLString = (getURL() == null) ? Policy.bind("Feature.NoURL") : getURL().toExternalForm(); //$NON-NLS-1$
 		return Policy.bind("Feature.FeatureVersionToString", URLString, getVersionedIdentifier().toString()); //$NON-NLS-1$
 	}


 	/**
 	 *
 	 */
 	private void promptForVerification(IVerificationResult verificationResult, IVerificationListener listener) throws CoreException{

 		if (listener==null) return;
 		int result =  listener.prompt(verificationResult);

 		if (result == IVerificationListener.CHOICE_ABORT) {
 			throw Utilities.newCoreException(Policy.bind("JarVerificationService.CancelInstall"), //$NON-NLS-1$
 			verificationResult.getResultException());
 		}
 		if (result == IVerificationListener.CHOICE_ERROR) {
 			throw Utilities.newCoreException(Policy.bind("JarVerificationService.UnsucessfulVerification"), //$NON-NLS-1$
 			verificationResult.getResultException());
 		}

 	return;

 	}

 }
	package org.eclipse.update.core;
	/*
	* (c) Copyright IBM Corp. 2000, 2002.
	* All Rights Reserved.
	*/
	import java.net.URL;

	import org.eclipse.core.runtime.*;
	import org.eclipse.update.core.model.*;
	import org.eclipse.update.internal.core.*;
	import org.eclipse.update.internal.core.Policy;
	/**
	* Abstract Class that implements most of the behavior of a feature
	* A feature ALWAYS belongs to an ISite
	*/
	public class Feature extends FeatureModel implements IFeature {

	/**
	*
	*/
	public static final String FEATURE_FILE = "feature"; //$NON-NLS-1$

	/**
	*
	*/
	public static final String FEATURE_XML = FEATURE_FILE + ".xml"; //$NON-NLS-1$

	/**
	*
	*/
	private static final String EMPTY_STRING = ""; //$NON-NLS-1$

	/**
	* Site in which teh feature resides
	*/
	private ISite site;

	/**
	* The content provider of the DefaultFeature
	*/
	private IFeatureContentProvider featureContentProvider;

	/**
	* Constructor
	*/
	public Feature() {
	}

	/**
	*
	*/

	public boolean equals(Object object) {
	if (!(object instanceof Feature))
	return false;
	IFeature f = (IFeature) object;
	return (super.equals(object) && getURL().equals(f.getURL()));

	}

	/*
	* @see IFeature#getVersionedIdentifier()
	*/
	public VersionedIdentifier getVersionedIdentifier() {
	return new VersionedIdentifier(getFeatureIdentifier(), getFeatureVersion());
	}

	/*
	* @see IFeature#getSite()
	*/
	public ISite getSite() {
	return site;
	}

	/*
	* @see IFeature#getURL()
	*/
	public URL getURL() {
	IFeatureContentProvider contentProvider = null;
	try {
	contentProvider = getFeatureContentProvider();
	} catch (CoreException e) {
	// no content provider, log status
	UpdateManagerPlugin.getPlugin().getLog().log(e.getStatus());
	}
	return (contentProvider != null) ? contentProvider.getURL() : null;
	}

	/*
	* @see IFeature#getUpdateSiteEntry()
	*/
	public IURLEntry getUpdateSiteEntry() {
	return (IURLEntry) getUpdateSiteEntryModel();
	}

	/*
	* @see IFeature#getDiscoverySiteEntries()
	*/
	public IURLEntry[] getDiscoverySiteEntries() {
	URLEntryModel[] result = getDiscoverySiteEntryModels();
	if (result.length == 0)
	return new IURLEntry[0];
	else
	return (IURLEntry[]) result;
	}

	/*
	* @see IFeature#getDescription()
	*/
	public IURLEntry getDescription() {
	return (IURLEntry) getDescriptionModel();
	}

	/*
	* @see IFeature#getCopyright()
	*/
	public IURLEntry getCopyright() {
	return (IURLEntry) getCopyrightModel();
	}

	/*
	* @see IFeature#getLicense()
	*/
	public IURLEntry getLicense() {
	return (IURLEntry) getLicenseModel();
	}

	/*
	* @see IFeature#getImage()
	*/
	public URL getImage() {
	return getImageURL();
	}
	/**
	* Sets the site
	* @param site The site to set
	*/
	public void setSite(ISite site) throws CoreException {
	if (this.site != null) {
	String id = UpdateManagerPlugin.getPlugin().getDescriptor().getUniqueIdentifier();
	String featureURLString = (getURL() != null) ? getURL().toExternalForm() : EMPTY_STRING;
	IStatus status = new Status(IStatus.ERROR, id, IStatus.OK, Policy.bind("Feature.SiteAlreadySet", featureURLString), null); //$NON-NLS-1$
	throw new CoreException(status);
	}
	this.site = site;
	}

	/**
	* returns the download size
	* of the feature to be installed on the site.
	* If the site is <code>null</code> returns the maximum size
	*
	* If one plug-in entry has an unknown size.
	* then the download size is unknown.
	*
	* @see IFeature#getDownloadSize()
	*
	*/
	public long getDownloadSize() {
	try {
	return getFeatureContentProvider().getDownloadSizeFor(getPluginEntries(), getNonPluginEntries());
	} catch (CoreException e) {
	UpdateManagerPlugin.getPlugin().getLog().log(e.getStatus());
	return ContentEntryModel.UNKNOWN_SIZE;
	}

	}
	/**
	* returns the install size
	* of the feature to be installed on the site.
	* If the site is <code>null</code> returns the maximum size
	*
	* If one plug-in entry has an unknown size.
	* then the install size is unknown.
	*
	* @see IFeature#getInstallSize()
	*/
	public long getInstallSize() {
	try {
	return getFeatureContentProvider().getInstallSizeFor(getPluginEntries(), getNonPluginEntries());
	} catch (CoreException e) {
	UpdateManagerPlugin.getPlugin().getLog().log(e.getStatus());
	return ContentEntryModel.UNKNOWN_SIZE;
	}

	}

	/*
	* @see IFeature#install(IFeature,IVerificationListener, IProgressMonitor) throws CoreException
	*/
	public IFeatureReference install(IFeature targetFeature, IVerificationListener verificationListener, IProgressMonitor progress) throws CoreException {

	// make sure we have an InstallMonitor
	InstallMonitor monitor;
	if (progress == null)
	monitor = null;
	else if (progress instanceof InstallMonitor)
	monitor = (InstallMonitor) progress;
	else
	monitor = new InstallMonitor(progress);

	// do the install
	IFeatureContentConsumer consumer = targetFeature.getFeatureContentConsumer();
	IVerifier verifier = getFeatureContentProvider().getVerifier();

	try {
	// determine list of plugins to install
	// find the intersection between the two arrays of IPluginEntry...
	// The one the site contains and the one the feature contains
	IPluginEntry[] sourceFeaturePluginEntries = getPluginEntries();
	ISite targetSite = targetFeature.getSite();
	IPluginEntry[] targetSitePluginEntries = (targetSite != null) ? targetSite.getPluginEntries() : new IPluginEntry[0];
	IPluginEntry[] pluginsToInstall = UpdateManagerUtils.diff(sourceFeaturePluginEntries, targetSitePluginEntries);

	// determine number of monitor tasks
	int taskCount = 1 // one task for all feature files (already downloaded)
	+pluginsToInstall.length // one task for each plugin to install
	+getNonPluginEntries().length; // one task for each non-plugin file to install

	if (monitor != null)
	monitor.beginTask(EMPTY_STRING, taskCount);

	if (verifier != null) {
	ContentReference[] references = getFeatureContentProvider().getFeatureEntryArchiveReferences(monitor);
	promptForVerification(verifier.verify(this, references, monitor),verificationListener);
	}

	//finds the contentReferences for this IFeature
	if (monitor != null)
	monitor.setTaskName(Policy.bind("Feature.TaskInstallFeatureFiles")); //$NON-NLS-1$
	ContentReference[] references = getFeatureContentProvider().getFeatureEntryContentReferences(monitor);
	if (verifier != null)
	verifier.verify(this, references, monitor);
	for (int i = 0; i < references.length; i++) {
	if (monitor != null)
	monitor.subTask(references[i].getIdentifier());
	consumer.store(references[i], monitor);
	}
	if (monitor != null)
	monitor.worked(1);

	// download and install plugin plugin files
	for (int i = 0; i < pluginsToInstall.length; i++) {
	// verification
	if (verifier != null) {
	references = getFeatureContentProvider().getPluginEntryArchiveReferences(pluginsToInstall[i], monitor);
	promptForVerification(verifier.verify(this, references, monitor),verificationListener);
	}

	}

	for (int i = 0; i < pluginsToInstall.length; i++) {
	if (monitor != null)
	monitor.setTaskName(Policy.bind("Feature.TaskInstallPluginFiles") + pluginsToInstall[i].getVersionedIdentifier().getIdentifier() + "]: "); //$NON-NLS-1$ //$NON-NLS-2$
	IContentConsumer pluginConsumer = consumer.open(pluginsToInstall[i]);

	// installation
	references = getFeatureContentProvider().getPluginEntryContentReferences(pluginsToInstall[i], monitor);
	for (int j = 0; j < references.length; j++) {
	if (monitor != null)
	monitor.subTask(references[j].getIdentifier());
	pluginConsumer.store(references[j], monitor);
	}
	pluginConsumer.close();
	if (monitor != null)
	monitor.worked(1);
	}

	// download and install non plugins bundles
	INonPluginEntry[] nonPluginsContentReferencesToInstall = getNonPluginEntries();
	for (int i = 0; i < nonPluginsContentReferencesToInstall.length; i++) {
	if (monitor != null)
	monitor.setTaskName(Policy.bind("Feature.TaskInstallNonPluginsFiles")); //$NON-NLS-1$
	IContentConsumer nonPluginConsumer = consumer.open(nonPluginsContentReferencesToInstall[i]);
	references = getFeatureContentProvider().getNonPluginEntryArchiveReferences(nonPluginsContentReferencesToInstall[i], monitor);
	if (verifier != null)
	promptForVerification(verifier.verify(this, references, monitor),verificationListener);
	for (int j = 0; j < references.length; j++) {
	if (monitor != null)
	monitor.subTask(references[j].getIdentifier());
	nonPluginConsumer.store(references[j], monitor);
	}
	nonPluginConsumer.close();
	if (monitor != null)
	monitor.worked(1);
	}
	} catch (CoreException e) {
	// an error occured, abort
	if (consumer != null)
	consumer.abort();
	throw e;
	} finally {
	if (monitor != null)
	monitor.done();
	}

	return consumer.close();

	}

	/*
	* @see IPluginContainer#getPluginEntries()
	*/
	public IPluginEntry[] getPluginEntries() {
	PluginEntryModel[] result = getPluginEntryModels();
	if (result.length == 0)
	return new IPluginEntry[0];
	else
	return (IPluginEntry[]) result;
	}

	/*
	* @see IFeature#getDataEntries()
	*/
	public INonPluginEntry[] getNonPluginEntries() {
	NonPluginEntryModel[] result = getNonPluginEntryModels();
	if (result.length == 0)
	return new INonPluginEntry[0];
	else
	return (INonPluginEntry[]) result;
	}

	/*
	* @see IPluginContainer#getPluginEntryCount()
	*/
	public int getPluginEntryCount() {
	return getPluginEntryModels().length;
	}

	/*
	* @see IFeature#getNonPluginEntryCount()
	*/
	public int getNonPluginEntryCount() {
	return getNonPluginEntryModels().length;
	}

	/*
	* @see IFeature#getImports()
	*/
	public IImport[] getImports() {
	ImportModel[] result = getImportModels();
	if (result.length == 0)
	return new IImport[0];
	else
	return (IImport[]) result;
	}

	/*
	* @see IAdaptable#getAdapter(Class)
	*/
	public Object getAdapter(Class adapter) {
	return null;
	}

	/*
	* @see IFeature#setFeatureContentProvider(IFeatureContentProvider)
	*/
	public void setFeatureContentProvider(IFeatureContentProvider featureContentProvider) {
	this.featureContentProvider = featureContentProvider;
	featureContentProvider.setFeature(this);
	}

	/*
	* @see IFeature#getFeatureContentProvider(IFeatureContentConsumer)
	*/
	public IFeatureContentProvider getFeatureContentProvider() throws CoreException {
	if (featureContentProvider == null) {
	String id = UpdateManagerPlugin.getPlugin().getDescriptor().getUniqueIdentifier();
	IStatus status = new Status(IStatus.ERROR, id, IStatus.OK, Policy.bind("Feature.NoContentProvider", getVersionedIdentifier().toString()), null); //$NON-NLS-1$
	throw new CoreException(status);
	}
	return this.featureContentProvider;
	}

	/*
	* @see IFeature#getContentConsumer()
	*/
	public IFeatureContentConsumer getFeatureContentConsumer() throws CoreException {
	throw new UnsupportedOperationException();
	}

	/*
	* @see Object#toString()
	*/
	public String toString() {
	String URLString = (getURL() == null) ? Policy.bind("Feature.NoURL") : getURL().toExternalForm(); //$NON-NLS-1$
	return Policy.bind("Feature.FeatureVersionToString", URLString, getVersionedIdentifier().toString()); //$NON-NLS-1$
	}


	/**
	*
	*/
	private void promptForVerification(IVerificationResult verificationResult, IVerificationListener listener) throws CoreException{

	if (listener==null) return;
	int result = listener.prompt(verificationResult);

	if (result == IVerificationListener.CHOICE_ABORT) {
	throw Utilities.newCoreException(Policy.bind("JarVerificationService.CancelInstall"), //$NON-NLS-1$
	verificationResult.getResultException());
	}
	if (result == IVerificationListener.CHOICE_ERROR) {
	throw Utilities.newCoreException(Policy.bind("JarVerificationService.UnsucessfulVerification"), //$NON-NLS-1$
	verificationResult.getResultException());
	}

	return;

	}

	}