plugins/org.eclipse.oomph.setup.core/src/org/eclipse/oomph/setup/internal/core/util/CatalogManager.java - oomph/org.eclipse.oomph - Git at Google

 /*
  * Copyright (c) 2014-2016 Eike Stepper (Loehne, Germany) and others.
  * All rights reserved. This program and the accompanying materials
  * are made available under the terms of the Eclipse Public License v2.0
  * which accompanies this distribution, and is available at
  * http://www.eclipse.org/legal/epl-v20.html
  *
  * Contributors:
  *    Eike Stepper - initial API and implementation
  */
 package org.eclipse.oomph.setup.internal.core.util;

 import org.eclipse.oomph.base.util.BaseUtil;
 import org.eclipse.oomph.setup.CatalogSelection;
 import org.eclipse.oomph.setup.Index;
 import org.eclipse.oomph.setup.ProductCatalog;
 import org.eclipse.oomph.setup.ProjectCatalog;
 import org.eclipse.oomph.setup.Scope;
 import org.eclipse.oomph.setup.SetupFactory;
 import org.eclipse.oomph.setup.SetupPackage;
 import org.eclipse.oomph.setup.Stream;
 import org.eclipse.oomph.setup.internal.core.SetupContext;
 import org.eclipse.oomph.setup.internal.core.SetupCorePlugin;
 import org.eclipse.oomph.util.ObjectUtil;
 import org.eclipse.oomph.util.StringUtil;

 import org.eclipse.emf.common.util.BasicEMap;
 import org.eclipse.emf.common.util.ECollections;
 import org.eclipse.emf.common.util.EList;
 import org.eclipse.emf.common.util.EMap;
 import org.eclipse.emf.common.util.URI;
 import org.eclipse.emf.ecore.EObject;
 import org.eclipse.emf.ecore.InternalEObject;
 import org.eclipse.emf.ecore.resource.Resource;
 import org.eclipse.emf.ecore.resource.ResourceSet;
 import org.eclipse.emf.ecore.resource.URIConverter;
 import org.eclipse.emf.ecore.util.EcoreUtil;
 import org.eclipse.emf.ecore.util.InternalEList;

 import java.beans.PropertyChangeListener;
 import java.beans.PropertyChangeSupport;
 import java.util.ArrayList;
 import java.util.Collections;
 import java.util.Iterator;
 import java.util.List;
 import java.util.Map;

 /**
  * @author Eike Stepper
  */
 public class CatalogManager
 {
   public static final String PROPERTY_INDEX = "PROPERTY_INDEX";

   private final IndexManager indexManager = new IndexManager();

   private final CatalogSelection selection;

   private Index index;

   private PropertyChangeSupport propertyChangeSupport;

   public CatalogManager()
   {
     selection = SetupFactory.eINSTANCE.createCatalogSelection();
     Resource selectionResource = SetupCoreUtil.RESOURCE_FACTORY_REGISTRY.getFactory(SetupContext.CATALOG_SELECTION_SETUP_URI)
         .createResource(SetupContext.CATALOG_SELECTION_SETUP_URI);
     selectionResource.getContents().add(selection);
   }

   public void addPropertyChangeListener(PropertyChangeListener listener)
   {
     getPropertyChangeSupport().addPropertyChangeListener(listener);
   }

   public void removePropertyChangeListener(PropertyChangeListener listener)
   {
     getPropertyChangeSupport().removePropertyChangeListener(listener);
   }

   private synchronized PropertyChangeSupport getPropertyChangeSupport()
   {
     if (propertyChangeSupport == null)
     {
       propertyChangeSupport = new PropertyChangeSupport(this);
     }

     return propertyChangeSupport;
   }

   public Index getIndex()
   {
     return index;
   }

   public boolean isCurrentIndex(URI indexURI)
   {
     if (index == null)
     {
       return false;
     }

     Resource resource = index.eResource();
     URI currentIndexURI = resource.getResourceSet().getURIConverter().normalize(resource.getURI());
     if (currentIndexURI.equals(indexURI))
     {
       return true;
     }

     if (currentIndexURI.isArchive())
     {
       String authority = currentIndexURI.authority();
       if (authority.equals(indexURI + "!"))
       {
         return true;
       }
     }

     return false;
   }

   public CatalogSelection getSelection()
   {
     return selection;
   }

   public Scope getCatalog(boolean product, String name)
   {
     for (Scope scope : getCatalogs(product))
     {
       if (name.equals(scope.getName()))
       {
         return scope;
       }
     }

     return null;
   }

   public List<? extends Scope> getCatalogs(boolean product)
   {
     if (index == null)
     {
       return Collections.emptyList();
     }

     @SuppressWarnings("unchecked")
     List<? extends Scope> result = (List<? extends Scope>)index
         .eGet(product ? SetupPackage.Literals.INDEX__PRODUCT_CATALOGS : SetupPackage.Literals.INDEX__PROJECT_CATALOGS);
     return result;
   }

   public List<? extends Scope> getSelectedCatalogs(boolean product)
   {
     @SuppressWarnings("unchecked")
     List<? extends Scope> result = (List<? extends Scope>)selection
         .eGet(product ? SetupPackage.Literals.CATALOG_SELECTION__PRODUCT_CATALOGS : SetupPackage.Literals.CATALOG_SELECTION__PROJECT_CATALOGS);
     return result;
   }

   public void selectCatalog(boolean product, Scope scope, boolean on)
   {
     @SuppressWarnings("unchecked")
     InternalEList<Scope> list = (InternalEList<Scope>)selection
         .eGet(product ? SetupPackage.Literals.CATALOG_SELECTION__PRODUCT_CATALOGS : SetupPackage.Literals.CATALOG_SELECTION__PROJECT_CATALOGS);

     boolean changed = on ? list.add(scope) : list.remove(scope);
     if (changed)
     {
       saveSelection();
     }
   }

   public void indexLoaded(Index index)
   {
     if (index == null)
     {
       return;
     }

     Index oldIndex = this.index;
     this.index = index;

     // If the name of the index changes, we clear out the current state of the selection.
     String indexName = index.getName();
     if (oldIndex != null && !ObjectUtil.equals(indexName, oldIndex.getName()))
     {
       selection.getDefaultProductVersions().clear();
       selection.getDefaultStreams().clear();
       selection.getProductCatalogs().clear();
       selection.getProjectCatalogs().clear();
       selection.getSelectedStreams().clear();
       selection.getAnnotations().clear();
     }

     indexManager.addIndex(index);

     ResourceSet resourceSet = index.eResource().getResourceSet();
     URIConverter uriConverter = resourceSet.getURIConverter();

     // Determine the URI of the selection from the name of the index.
     URI catalogURI = StringUtil.isEmpty(indexName) || "Eclipse".equals(indexName) ? SetupContext.CATALOG_SELECTION_SETUP_URI
         : SetupContext.CATALOG_SELECTION_SETUP_URI.trimSegments(1)
             .appendSegment(URI.encodeSegment(indexName.replace(' ', '.').toLowerCase(), false) + '.' + SetupContext.CATALOG_SELECTION_SETUP_URI.lastSegment());
     if (catalogURI != null && !catalogURI.equals(SetupContext.CATALOG_SELECTION_SETUP_URI))
     {
       // If it's not the default, redirect the default to the location.
       uriConverter.getURIMap().put(SetupContext.CATALOG_SELECTION_SETUP_URI, catalogURI);
     }
     else
     {
       // Otherwise remove the mapping we might have added previously.
       uriConverter.getURIMap().remove(SetupContext.CATALOG_SELECTION_SETUP_URI);
     }

     // Load the local selection into the same resource set as the index, but only if the local selection exists.
     if (uriConverter.exists(SetupContext.CATALOG_SELECTION_SETUP_URI, null))
     {
       // Load local selection file
       Resource selectionResource = BaseUtil.loadResourceSafely(resourceSet, SetupContext.CATALOG_SELECTION_SETUP_URI);
       CatalogSelection selection = (CatalogSelection)EcoreUtil.getObjectByType(selectionResource.getContents(), SetupPackage.Literals.CATALOG_SELECTION);

       // Ensure that all proxies are resolved and then remove the loaded selection from its resource.
       EcoreUtil.resolveAll(selectionResource);
       selectionResource.getContents().clear();

       // Add the managed selection to that same resource so its proxies can resolve.
       selectionResource.getContents().add(this.selection);

       // Update the maps so they're hashed by the resolved proxies.
       updateProxyKeyedMap(this.selection.getDefaultProductVersions());
       updateProxyKeyedMap(this.selection.getDefaultStreams());

       if (selection != null)
       {
         // Copy over all the features of the loaded selection to the managed selection.
         this.selection.getDefaultProductVersions().putAll(selection.getDefaultProductVersions());
         this.selection.getDefaultStreams().putAll(selection.getDefaultStreams());
         EList<Stream> selectedStreams = this.selection.getSelectedStreams();
         selectedStreams.clear();
         selectedStreams.addAll(selection.getSelectedStreams());

         EList<ProductCatalog> productCatalogs = this.selection.getProductCatalogs();
         productCatalogs.clear();
         productCatalogs.addAll(selection.getProductCatalogs());
         filter(productCatalogs, index.getProductCatalogs());

         EList<ProjectCatalog> projectCatalogs = this.selection.getProjectCatalogs();
         projectCatalogs.clear();
         projectCatalogs.addAll(selection.getProjectCatalogs());
         filter(projectCatalogs, index.getProjectCatalogs());
       }

       // Filter out any proxies that remain in the managed selection.
       filterProxies(this.selection.getDefaultProductVersions());
       filterProxies(this.selection.getDefaultStreams());
       filterProxies(this.selection.getProductCatalogs());
       filterProxies(this.selection.getProjectCatalogs());

       // If the managed selection's product catalog is empty, fill it with all available product catalogs from the index.
       if (this.selection.getProductCatalogs().isEmpty())
       {
         populateSelectedProductCatalogs(this.selection, index);
       }

       // If the managed selection's project catalog is empty, fill it with all available project catalogs from the index.
       if (this.selection.getProjectCatalogs().isEmpty())
       {
         populateSelectedProjectCatalogs(this.selection, index);
       }
     }
     else
     {
       // Add the managed selection's resource to the index's resource set.
       Resource selectionResource = selection.eResource();
       resourceSet.getResources().add(selectionResource);

       populateSelectedProductCatalogs(selection, index);
       populateSelectedProjectCatalogs(selection, index);

       saveSelection();
     }

     getPropertyChangeSupport().firePropertyChange(PROPERTY_INDEX, oldIndex, this.index);
   }

   private <T extends Scope> void filter(EList<T> selectionScopes, EList<T> indexScopes)
   {
     List<T> scopes = new ArrayList<T>(indexScopes);
     scopes.retainAll(selectionScopes);
     for (Iterator<T> it = scopes.iterator(); it.hasNext();)
     {
       T scope = it.next();
       if ("redirectable".equals(scope.getName()))
       {
         it.remove();
       }
     }

     ECollections.setEList(selectionScopes, scopes);
   }

   private void populateSelectedProductCatalogs(CatalogSelection selection, Index index)
   {
     EList<ProductCatalog> productCatalogs = selection.getProductCatalogs();
     for (ProductCatalog productCatalog : index.getProductCatalogs())
     {
       URI uri = EcoreUtil.getURI(productCatalog);
       if (!"catalog".equals(uri.scheme()) && !SelfProductCatalogURIHandlerImpl.SELF_PRODUCT_CATALOG_NAME.equals(productCatalog.getName())
           && !productCatalog.getProducts().isEmpty())
       {
         productCatalogs.add(productCatalog);
       }
     }
   }

   private void populateSelectedProjectCatalogs(CatalogSelection selection, Index index)
   {
     EList<ProjectCatalog> projectCatalogs = selection.getProjectCatalogs();
     for (ProjectCatalog projectCatalog : index.getProjectCatalogs())
     {
       if (!projectCatalog.getProjects().isEmpty())
       {
         projectCatalogs.add(projectCatalog);
       }
     }
   }

   private <K extends EObject, V extends EObject> void updateProxyKeyedMap(EMap<K, V> eMap)
   {
     EMap<K, V> originalEMap = new BasicEMap<K, V>(eMap.map());
     eMap.clear();
     eMap.putAll(originalEMap);
   }

   private <K extends EObject, V extends EObject> void filterProxies(EMap<K, V> eMap)
   {
     for (Iterator<Map.Entry<K, V>> it = eMap.iterator(); it.hasNext();)
     {
       Map.Entry<K, V> entry = it.next();
       K key = entry.getKey();
       V value = entry.getValue();

       if (key == null || key.eIsProxy() || value == null || value.eIsProxy())
       {
         it.remove();
       }
     }
   }

   private void filterProxies(EList<? extends EObject> list)
   {
     for (Iterator<? extends EObject> it = list.iterator(); it.hasNext();)
     {
       if (it.next().eIsProxy())
       {
         it.remove();
       }
     }
   }

   public void saveSelection()
   {
     // Check if any containers are proxies.
     // In this case save will fail.
     // This case should only happen if we're trying to save while reloading the index and in that case we don't need to save.
     for (EObject eObject : selection.eCrossReferences())
     {
       InternalEObject internalEObject = (InternalEObject)eObject;
       for (InternalEObject eContainer = internalEObject.eInternalContainer(); eContainer != null; eContainer = eContainer.eInternalContainer())
       {
         if (eContainer.eIsProxy())
         {
           return;
         }
       }
     }

     try
     {
       selection.eResource().save(Collections.singletonMap(Resource.OPTION_SAVE_ONLY_IF_CHANGED, Resource.OPTION_SAVE_ONLY_IF_CHANGED_MEMORY_BUFFER));
     }
     catch (Exception ex)
     {
       SetupCorePlugin.INSTANCE.log(ex);
     }
   }
 }
	/*
	* Copyright (c) 2014-2016 Eike Stepper (Loehne, Germany) and others.
	* All rights reserved. This program and the accompanying materials
	* are made available under the terms of the Eclipse Public License v2.0
	* which accompanies this distribution, and is available at
	* http://www.eclipse.org/legal/epl-v20.html
	*
	* Contributors:
	* Eike Stepper - initial API and implementation
	*/
	package org.eclipse.oomph.setup.internal.core.util;

	import org.eclipse.oomph.base.util.BaseUtil;
	import org.eclipse.oomph.setup.CatalogSelection;
	import org.eclipse.oomph.setup.Index;
	import org.eclipse.oomph.setup.ProductCatalog;
	import org.eclipse.oomph.setup.ProjectCatalog;
	import org.eclipse.oomph.setup.Scope;
	import org.eclipse.oomph.setup.SetupFactory;
	import org.eclipse.oomph.setup.SetupPackage;
	import org.eclipse.oomph.setup.Stream;
	import org.eclipse.oomph.setup.internal.core.SetupContext;
	import org.eclipse.oomph.setup.internal.core.SetupCorePlugin;
	import org.eclipse.oomph.util.ObjectUtil;
	import org.eclipse.oomph.util.StringUtil;

	import org.eclipse.emf.common.util.BasicEMap;
	import org.eclipse.emf.common.util.ECollections;
	import org.eclipse.emf.common.util.EList;
	import org.eclipse.emf.common.util.EMap;
	import org.eclipse.emf.common.util.URI;
	import org.eclipse.emf.ecore.EObject;
	import org.eclipse.emf.ecore.InternalEObject;
	import org.eclipse.emf.ecore.resource.Resource;
	import org.eclipse.emf.ecore.resource.ResourceSet;
	import org.eclipse.emf.ecore.resource.URIConverter;
	import org.eclipse.emf.ecore.util.EcoreUtil;
	import org.eclipse.emf.ecore.util.InternalEList;

	import java.beans.PropertyChangeListener;
	import java.beans.PropertyChangeSupport;
	import java.util.ArrayList;
	import java.util.Collections;
	import java.util.Iterator;
	import java.util.List;
	import java.util.Map;

	/**
	* @author Eike Stepper
	*/
	public class CatalogManager
	{
	public static final String PROPERTY_INDEX = "PROPERTY_INDEX";

	private final IndexManager indexManager = new IndexManager();

	private final CatalogSelection selection;

	private Index index;

	private PropertyChangeSupport propertyChangeSupport;

	public CatalogManager()
	{
	selection = SetupFactory.eINSTANCE.createCatalogSelection();
	Resource selectionResource = SetupCoreUtil.RESOURCE_FACTORY_REGISTRY.getFactory(SetupContext.CATALOG_SELECTION_SETUP_URI)
	.createResource(SetupContext.CATALOG_SELECTION_SETUP_URI);
	selectionResource.getContents().add(selection);
	}

	public void addPropertyChangeListener(PropertyChangeListener listener)
	{
	getPropertyChangeSupport().addPropertyChangeListener(listener);
	}

	public void removePropertyChangeListener(PropertyChangeListener listener)
	{
	getPropertyChangeSupport().removePropertyChangeListener(listener);
	}

	private synchronized PropertyChangeSupport getPropertyChangeSupport()
	{
	if (propertyChangeSupport == null)
	{
	propertyChangeSupport = new PropertyChangeSupport(this);
	}

	return propertyChangeSupport;
	}

	public Index getIndex()
	{
	return index;
	}

	public boolean isCurrentIndex(URI indexURI)
	{
	if (index == null)
	{
	return false;
	}

	Resource resource = index.eResource();
	URI currentIndexURI = resource.getResourceSet().getURIConverter().normalize(resource.getURI());
	if (currentIndexURI.equals(indexURI))
	{
	return true;
	}

	if (currentIndexURI.isArchive())
	{
	String authority = currentIndexURI.authority();
	if (authority.equals(indexURI + "!"))
	{
	return true;
	}
	}

	return false;
	}

	public CatalogSelection getSelection()
	{
	return selection;
	}

	public Scope getCatalog(boolean product, String name)
	{
	for (Scope scope : getCatalogs(product))
	{
	if (name.equals(scope.getName()))
	{
	return scope;
	}
	}

	return null;
	}

	public List<? extends Scope> getCatalogs(boolean product)
	{
	if (index == null)
	{
	return Collections.emptyList();
	}

	@SuppressWarnings("unchecked")
	List<? extends Scope> result = (List<? extends Scope>)index
	.eGet(product ? SetupPackage.Literals.INDEX__PRODUCT_CATALOGS : SetupPackage.Literals.INDEX__PROJECT_CATALOGS);
	return result;
	}

	public List<? extends Scope> getSelectedCatalogs(boolean product)
	{
	@SuppressWarnings("unchecked")
	List<? extends Scope> result = (List<? extends Scope>)selection
	.eGet(product ? SetupPackage.Literals.CATALOG_SELECTION__PRODUCT_CATALOGS : SetupPackage.Literals.CATALOG_SELECTION__PROJECT_CATALOGS);
	return result;
	}

	public void selectCatalog(boolean product, Scope scope, boolean on)
	{
	@SuppressWarnings("unchecked")
	InternalEList<Scope> list = (InternalEList<Scope>)selection
	.eGet(product ? SetupPackage.Literals.CATALOG_SELECTION__PRODUCT_CATALOGS : SetupPackage.Literals.CATALOG_SELECTION__PROJECT_CATALOGS);

	boolean changed = on ? list.add(scope) : list.remove(scope);
	if (changed)
	{
	saveSelection();
	}
	}

	public void indexLoaded(Index index)
	{
	if (index == null)
	{
	return;
	}

	Index oldIndex = this.index;
	this.index = index;

	// If the name of the index changes, we clear out the current state of the selection.
	String indexName = index.getName();
	if (oldIndex != null && !ObjectUtil.equals(indexName, oldIndex.getName()))
	{
	selection.getDefaultProductVersions().clear();
	selection.getDefaultStreams().clear();
	selection.getProductCatalogs().clear();
	selection.getProjectCatalogs().clear();
	selection.getSelectedStreams().clear();
	selection.getAnnotations().clear();
	}

	indexManager.addIndex(index);

	ResourceSet resourceSet = index.eResource().getResourceSet();
	URIConverter uriConverter = resourceSet.getURIConverter();

	// Determine the URI of the selection from the name of the index.
	URI catalogURI = StringUtil.isEmpty(indexName) \|\| "Eclipse".equals(indexName) ? SetupContext.CATALOG_SELECTION_SETUP_URI
	: SetupContext.CATALOG_SELECTION_SETUP_URI.trimSegments(1)
	.appendSegment(URI.encodeSegment(indexName.replace(' ', '.').toLowerCase(), false) + '.' + SetupContext.CATALOG_SELECTION_SETUP_URI.lastSegment());
	if (catalogURI != null && !catalogURI.equals(SetupContext.CATALOG_SELECTION_SETUP_URI))
	{
	// If it's not the default, redirect the default to the location.
	uriConverter.getURIMap().put(SetupContext.CATALOG_SELECTION_SETUP_URI, catalogURI);
	}
	else
	{
	// Otherwise remove the mapping we might have added previously.
	uriConverter.getURIMap().remove(SetupContext.CATALOG_SELECTION_SETUP_URI);
	}

	// Load the local selection into the same resource set as the index, but only if the local selection exists.
	if (uriConverter.exists(SetupContext.CATALOG_SELECTION_SETUP_URI, null))
	{
	// Load local selection file
	Resource selectionResource = BaseUtil.loadResourceSafely(resourceSet, SetupContext.CATALOG_SELECTION_SETUP_URI);
	CatalogSelection selection = (CatalogSelection)EcoreUtil.getObjectByType(selectionResource.getContents(), SetupPackage.Literals.CATALOG_SELECTION);

	// Ensure that all proxies are resolved and then remove the loaded selection from its resource.
	EcoreUtil.resolveAll(selectionResource);
	selectionResource.getContents().clear();

	// Add the managed selection to that same resource so its proxies can resolve.
	selectionResource.getContents().add(this.selection);

	// Update the maps so they're hashed by the resolved proxies.
	updateProxyKeyedMap(this.selection.getDefaultProductVersions());
	updateProxyKeyedMap(this.selection.getDefaultStreams());

	if (selection != null)
	{
	// Copy over all the features of the loaded selection to the managed selection.
	this.selection.getDefaultProductVersions().putAll(selection.getDefaultProductVersions());
	this.selection.getDefaultStreams().putAll(selection.getDefaultStreams());
	EList<Stream> selectedStreams = this.selection.getSelectedStreams();
	selectedStreams.clear();
	selectedStreams.addAll(selection.getSelectedStreams());

	EList<ProductCatalog> productCatalogs = this.selection.getProductCatalogs();
	productCatalogs.clear();
	productCatalogs.addAll(selection.getProductCatalogs());
	filter(productCatalogs, index.getProductCatalogs());

	EList<ProjectCatalog> projectCatalogs = this.selection.getProjectCatalogs();
	projectCatalogs.clear();
	projectCatalogs.addAll(selection.getProjectCatalogs());
	filter(projectCatalogs, index.getProjectCatalogs());
	}

	// Filter out any proxies that remain in the managed selection.
	filterProxies(this.selection.getDefaultProductVersions());
	filterProxies(this.selection.getDefaultStreams());
	filterProxies(this.selection.getProductCatalogs());
	filterProxies(this.selection.getProjectCatalogs());

	// If the managed selection's product catalog is empty, fill it with all available product catalogs from the index.
	if (this.selection.getProductCatalogs().isEmpty())
	{
	populateSelectedProductCatalogs(this.selection, index);
	}

	// If the managed selection's project catalog is empty, fill it with all available project catalogs from the index.
	if (this.selection.getProjectCatalogs().isEmpty())
	{
	populateSelectedProjectCatalogs(this.selection, index);
	}
	}
	else
	{
	// Add the managed selection's resource to the index's resource set.
	Resource selectionResource = selection.eResource();
	resourceSet.getResources().add(selectionResource);

	populateSelectedProductCatalogs(selection, index);
	populateSelectedProjectCatalogs(selection, index);

	saveSelection();
	}

	getPropertyChangeSupport().firePropertyChange(PROPERTY_INDEX, oldIndex, this.index);
	}

	private <T extends Scope> void filter(EList<T> selectionScopes, EList<T> indexScopes)
	{
	List<T> scopes = new ArrayList<T>(indexScopes);
	scopes.retainAll(selectionScopes);
	for (Iterator<T> it = scopes.iterator(); it.hasNext();)
	{
	T scope = it.next();
	if ("redirectable".equals(scope.getName()))
	{
	it.remove();
	}
	}

	ECollections.setEList(selectionScopes, scopes);
	}

	private void populateSelectedProductCatalogs(CatalogSelection selection, Index index)
	{
	EList<ProductCatalog> productCatalogs = selection.getProductCatalogs();
	for (ProductCatalog productCatalog : index.getProductCatalogs())
	{
	URI uri = EcoreUtil.getURI(productCatalog);
	if (!"catalog".equals(uri.scheme()) && !SelfProductCatalogURIHandlerImpl.SELF_PRODUCT_CATALOG_NAME.equals(productCatalog.getName())
	&& !productCatalog.getProducts().isEmpty())
	{
	productCatalogs.add(productCatalog);
	}
	}
	}

	private void populateSelectedProjectCatalogs(CatalogSelection selection, Index index)
	{
	EList<ProjectCatalog> projectCatalogs = selection.getProjectCatalogs();
	for (ProjectCatalog projectCatalog : index.getProjectCatalogs())
	{
	if (!projectCatalog.getProjects().isEmpty())
	{
	projectCatalogs.add(projectCatalog);
	}
	}
	}

	private <K extends EObject, V extends EObject> void updateProxyKeyedMap(EMap<K, V> eMap)
	{
	EMap<K, V> originalEMap = new BasicEMap<K, V>(eMap.map());
	eMap.clear();
	eMap.putAll(originalEMap);
	}

	private <K extends EObject, V extends EObject> void filterProxies(EMap<K, V> eMap)
	{
	for (Iterator<Map.Entry<K, V>> it = eMap.iterator(); it.hasNext();)
	{
	Map.Entry<K, V> entry = it.next();
	K key = entry.getKey();
	V value = entry.getValue();

	if (key == null \|\| key.eIsProxy() \|\| value == null \|\| value.eIsProxy())
	{
	it.remove();
	}
	}
	}

	private void filterProxies(EList<? extends EObject> list)
	{
	for (Iterator<? extends EObject> it = list.iterator(); it.hasNext();)
	{
	if (it.next().eIsProxy())
	{
	it.remove();
	}
	}
	}

	public void saveSelection()
	{
	// Check if any containers are proxies.
	// In this case save will fail.
	// This case should only happen if we're trying to save while reloading the index and in that case we don't need to save.
	for (EObject eObject : selection.eCrossReferences())
	{
	InternalEObject internalEObject = (InternalEObject)eObject;
	for (InternalEObject eContainer = internalEObject.eInternalContainer(); eContainer != null; eContainer = eContainer.eInternalContainer())
	{
	if (eContainer.eIsProxy())
	{
	return;
	}
	}
	}

	try
	{
	selection.eResource().save(Collections.singletonMap(Resource.OPTION_SAVE_ONLY_IF_CHANGED, Resource.OPTION_SAVE_ONLY_IF_CHANGED_MEMORY_BUFFER));
	}
	catch (Exception ex)
	{
	SetupCorePlugin.INSTANCE.log(ex);
	}
	}
	}