Java QueryUtil.createIUQuery方法代码示例

import org.eclipse.equinox.p2.query.QueryUtil; //导入方法依赖的package包/类
/**
 * Finds the latest version of an installable unit in a repository.
 * 
 * @param spec Version specification
 * @return Installable unit or <code>null</code>.
 * @throws CoreException on failure
 */
public IInstallableUnit findUnit(IVersionedId spec) {
	String id = spec.getId();
	Version version = spec.getVersion();
	VersionRange range = VersionRange.emptyRange;
	if (version != null && !version.equals(Version.emptyVersion))
		range = new VersionRange(version, true, version, true);
	
	IQuery<IInstallableUnit> query = QueryUtil.createIUQuery(id, range);
	IQueryResult<IInstallableUnit> queryResult = getRepository().query(query, new NullProgressMonitor());
	
	Iterator<IInstallableUnit> matches = queryResult.iterator();
	// pick the newest match
	IInstallableUnit newest = null;
	while (matches.hasNext()) {
		IInstallableUnit candidate = matches.next();
		if (newest == null || (newest.getVersion().compareTo(candidate.getVersion()) < 0))
			newest = candidate;
	}
	
	return newest;
}
 

import org.eclipse.equinox.p2.query.QueryUtil; //导入方法依赖的package包/类
/**
 * Finds the latest version of an installable unit in all repositories.
 * 
 * @param spec Version specification
 * @return Installable unit or <code>null</code>.
 * @throws CoreException on failure
 */
public IInstallableUnit findUnitAll(IVersionedId spec) throws CoreException {
	String id = spec.getId();
	if (id == null) {
		Installer.fail(InstallMessages.Error_NoId);
	}
	Version version = spec.getVersion();
	VersionRange range = VersionRange.emptyRange;
	if (version != null && !version.equals(Version.emptyVersion))
		range = new VersionRange(version, true, version, true);
	IQuery<IInstallableUnit> query = QueryUtil.createIUQuery(id, range);
	Iterator<IInstallableUnit> matches = getManager().query(query, null).iterator();
	// pick the newest match
	IInstallableUnit newest = null;
	while (matches.hasNext()) {
		IInstallableUnit candidate = matches.next();
		if (newest == null || (newest.getVersion().compareTo(candidate.getVersion()) < 0))
			newest = candidate;
	}
	if (newest == null)
	{
		Installer.fail(InstallMessages.Error_IUNotFound + id);
	}
	return newest;
}
 

import org.eclipse.equinox.p2.query.QueryUtil; //导入方法依赖的package包/类
/**
 * Checks if a specific {@link IInstallableUnit} (IU) is installed
 * 
 * @param installableUnitID The ID of the IU of interest
 * @return true if the IU is installed
 */
public boolean checkIfInstalled(String installableUnitID) {

	// --- Query the p2 profile for the InstallableUnit of interest -----------
	IProfileRegistry profileRegistry = (IProfileRegistry) this.getProvisioningAgent().getService(IProfileRegistry.SERVICE_NAME);
	IProfile profile = profileRegistry.getProfile(IProfileRegistry.SELF);
	IQuery<IInstallableUnit> query = QueryUtil.createIUQuery(installableUnitID);
	IQueryResult<IInstallableUnit> queryResult = profile.query(query, this.getProgressMonitor());

	return !(queryResult.isEmpty());
}
 

import org.eclipse.equinox.p2.query.QueryUtil; //导入方法依赖的package包/类
/**
 * Finds the latest version of an installable unit in local repositories.
 * 
 * @param spec Version specification
 * @return Installable unit or <code>null</code>.
 * @throws CoreException on failure
 */
public IInstallableUnit findUnit(IVersionedId spec) throws CoreException {
	String id = spec.getId();
	if (id == null) {
		Installer.fail(InstallMessages.Error_NoId);
	}
	Version version = spec.getVersion();
	VersionRange range = VersionRange.emptyRange;
	if (version != null && !version.equals(Version.emptyVersion))
		range = new VersionRange(version, true, version, true);
	
	URI[] locations = manager.getKnownRepositories(IRepositoryManager.REPOSITORIES_LOCAL);
	List<IMetadataRepository> queryables = new ArrayList<IMetadataRepository>(locations.length);
	for (URI location : locations) {
		queryables.add(getManager().loadRepository(location, new NullProgressMonitor()));
	}

	IQuery<IInstallableUnit> query = QueryUtil.createIUQuery(id, range);
	IQueryable<IInstallableUnit> compoundQueryable = QueryUtil.compoundQueryable(queryables);
	IQueryResult<IInstallableUnit> queryResult = compoundQueryable.query(query, new NullProgressMonitor());
	
	Iterator<IInstallableUnit> matches = queryResult.iterator();
	// pick the newest match
	IInstallableUnit newest = null;
	while (matches.hasNext()) {
		IInstallableUnit candidate = matches.next();
		if (newest == null || (newest.getVersion().compareTo(candidate.getVersion()) < 0))
			newest = candidate;
	}

	return newest;
}
 

import org.eclipse.equinox.p2.query.QueryUtil; //导入方法依赖的package包/类
/**
 * Returns the name for an installable unit.
 * 
 * @param id IU identifier.
 * @return IU name or <code>null</code> if the IU is not found.
 */
public String queryIuName(String id) {
	IQuery<IInstallableUnit> query = QueryUtil.createIUQuery(id);
	IQueryResult<IInstallableUnit> result = getMetadataRepositoryManager().query(query, null);
	Iterator<IInstallableUnit> iter = result.iterator();
	while (iter.hasNext()) {
		IInstallableUnit unit = iter.next();
		return unit.getProperty(IInstallableUnit.PROP_NAME, null);
	}
	
	return null;
}
 

import org.eclipse.equinox.p2.query.QueryUtil; //导入方法依赖的package包/类
public boolean shouldUpdate() {
	try {
		IProvisioningAgentProvider agentProvider= Activator.getDefault().getProvisioningAgentProvider();
		if (agentProvider == null) {
			Activator.getDefault().logErrorStatus("Could not find a provisioning agent provider.", new RuntimeException());
			return false;
		}

		final IProvisioningAgent agent= agentProvider.createAgent(null);

		IMetadataRepositoryManager metadataRepositoryManager= (IMetadataRepositoryManager)agent.getService(IMetadataRepositoryManager.SERVICE_NAME);

		if (metadataRepositoryManager == null) {
			Activator.getDefault().logErrorStatus("Could not find the meta data repository manager.", new RuntimeException());
			return false;
		}

		IArtifactRepositoryManager artifactRepositoryManager= (IArtifactRepositoryManager)agent.getService(IArtifactRepositoryManager.SERVICE_NAME);

		if (artifactRepositoryManager == null) {
			Activator.getDefault().logErrorStatus("Could not find the artifact repository manager.", new RuntimeException());
			return false;
		}

		metadataRepositoryManager.addRepository(getUpdateSiteURI(updateSite));
		artifactRepositoryManager.addRepository(getUpdateSiteURI(updateSite));

		metadataRepositoryManager.loadRepository(getUpdateSiteURI(updateSite), new NullProgressMonitor());

		final IProfileRegistry registry= (IProfileRegistry)agent.getService(IProfileRegistry.SERVICE_NAME);

		if (registry == null) {
			Activator.getDefault().logErrorStatus("Could not find the profile registry.", new RuntimeException());
			return false;
		}

		final IProfile profile= registry.getProfile(IProfileRegistry.SELF);

		if (profile == null) {
			Activator.getDefault().logErrorStatus("Could not find the profile.", new RuntimeException());
			return false;
		}

		IQuery<IInstallableUnit> query= QueryUtil.createIUQuery(pluginID);
		Collection<IInstallableUnit> iusToUpdate= profile.query(query, null).toUnmodifiableSet();

		ProvisioningSession provisioningSession= new ProvisioningSession(agent);

		final UpdateOperation updateOperation= new UpdateOperation(provisioningSession, iusToUpdate);

		IStatus modalResolution= updateOperation.resolveModal(new NullProgressMonitor());

		if (modalResolution.isOK())
			return true;
	} catch (ProvisionException e) {
		Activator.getDefault().logErrorStatus("A provisioning exception occured while checking for updates.", e);
	}
	return false;
}